what is the name of the protective structure that forms around an embryo

Answers

Answer 1

Answer:

NUTRIENTS

Explanation:

Nutrients pass from the placenta through the umbilical cord, and the amnion, a fluid-filled membrane, surrounds and protects the embryo. The division of the body into the head and trunk becomes apparent, and the brain, spinal cord, and internal organs begin to develop.


Related Questions

larger size and greater complexity evolved in green algae by three different mechanisms. describe the three mechanisms and indicate which mechanism(s) produce true multicellularity

Answers

The three mechanisms that evolved larger size and greater complexity in green algae are the membrane stacking mechanism, the cell fusion mechanism and the apical growth mechanism.

The membrane stacking mechanism involves the stacking of multiple single-celled organisms to form multicellular structures. This mechanism does not lead to true multicellularity as it results in only a single layer of cells.

The cell fusion mechanism involves the fusion of two or more cells to form larger cells. This mechanism does not lead to true multicellularity either, as the fused cells remain separate entities.

The apical growth mechanism involves the growth of a multicellular organism from a single cell. This mechanism leads to true multicellularity as the cells of the organism are integrated and form a single organism. The apical growth mechanism is the only mechanism that leads to true multicellularity in green algae.

Complete Question:

Green algae include both unicellular and multicellular organisms. Larger size and greater complexity evolved in green algae by three different mechanisms. Briefly describe the three mechanisms and indicate which mechanism(s) produce true multicellularity

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Help!! Fill in the blanks, see picture below!! Biology!

Help!! Fill in the blanks, see picture below!! Biology!

Answers

Answer:

and __chromatin__...., other__organelles___

6. Nuclear power plants produce no
but they do generate

Answers

Answer:

Nuclear power plants produce no carbon dioxide emissions, but they do generate greenhouse gasses.

:)

Nuclear power plants produce no greenhouse gases, such as carbon dioxide and methane, which are responsible for global warming and climate change. However, they do generate nuclear waste.

What are nuclear power plants?

Nuclear power plants generate electricity by using the heat produced by nuclear fission reactions to boil water and produce steam. This steam then drives turbines, which generate electricity. While nuclear power plants do not produce greenhouse gases or other air pollutants, they do generate nuclear waste, which is radioactive and requires special handling and storage to prevent harm to human health and the environment. Nuclear accidents, while rare, can also have catastrophic consequences, as demonstrated by the Chernobyl disasters.

Hence, nuclear power plants produce no greenhouse gases, such as carbon dioxide and methane, which are responsible for global warming and climate change. However, they do generate nuclear waste.

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Based on these data, which is true of the world population?
A. The number of people added to the population yearly is increasing
B. The population size is getting smaller
C. The population is growing younger
D. The median age of the population is decreasing

Based on these data, which is true of the world population? A. The number of people added to the population

Answers

Answer:

D

Explanation:

because humans are counted every decade and it's possible for some to be deceased or something

As per this the median age of the population is decreasing. The correct option is D.

What is population?

Any whole group that shares at least one trait is referred to be a population. People do not make up all populations.

Populations can include, but are not limited to, individuals, animals, organisations, structures, buildings, cars, farms, objects, or occasions.

A population is a group of people belonging to a single species that live together and interbreed in a certain geographic area.

For certain species, it is simple to determine the geographic limits of a population; for other species, it might be more challenging.

The United Nations estimates that on November 15, 2022, there will be 8 billion people on the planet. These numbers show a decline in the population's median age.

Thus, the correct option is D.

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Which of the following describes a scenario that would result in the phenotypic change shown in the graph?

(please someone help )

Which of the following describes a scenario that would result in the phenotypic change shown in the graph?(please

Answers

C is the correct answer

This is an example of stabilizing selection in which there are selective pressure acting against the two extremes of a trait. This results in the intermediate trait to rise in frequency in the population

The graph given below shows the process of stabilizing selection, where the individuals have an intermediate phenotype increase in number. This scenario also refers to heterozygous advantage.

What do you mean by Phenotype?

The phenotype may be defined as the appearance or manifestation of a specific character. It is also referred to as a trait.

In stabilizing selection, selection pressure is applied to both the extreme ends, which means the purebred characters possess selection pressure. And due to this the individuals with intermediate phenotypes are more favored.

Therefore, the graph given below shows the process of stabilizing selection.

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true or false: natural selection is only one of several possible causes of evolution.

Answers

The given statement "Natural selection is only one of several possible causes of evolution" is True because natural selection is a mechanism of evolution, but it is not the only cause of evolutionary change.

Other mechanisms include genetic drift, gene flow, and mutation. Genetic drift is the random fluctuation of gene frequencies in a population due to chance events, such as a natural disaster or random mating. Gene flow is the movement of genes from one population to another, which can introduce new traits into a population.

Mutation is a change in the DNA sequence that can lead to new traits or genetic variation. While natural selection is often the most well-known mechanism of evolution, it is important to recognize that other factors can also play a significant role in shaping the genetic makeup of a population over time.

Understanding the different mechanisms of evolution is crucial to understanding how biodiversity is generated and how species change over time.

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Final answer:

Natural selection is indeed one cause of evolution, but there are several others including gene flow and genetic drift. Not all evolution is adaptive, and evolution is neither moving towards a preconceived ideal nor is it random. It is influenced by various processes and their impact on a population's genetic and phenotypic variance.

Explanation:

The statement is true: natural selection is indeed one of several causes of evolution. Natural selection drives evolution by favoring individuals and traits that are better adapted to survival in a specific environment. However, natural selection is limited by the existing genetic variation in a population and the new alleles that arise through mutation and gene flow.

Furthermore, not all evolution is adaptive, and other forces such as genetic drift also significantly influence evolution, often introducing deleterious alleles into a population's gene pool. Biological evolution is not moving towards a preconceived ideal nor is it random; instead, it is the sum of various processes and their influence on a population's genetic and phenotypic variance.

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*ASAP ASAP ASAP ASAP* Pls. help me ...

*ASAP ASAP ASAP ASAP* Pls. help me ...

Answers

Answer:

1.Prophase

2.Metaphase

3.Anophase

4.Telophase

5.Cytokinesis

*ASAP ASAP ASAP ASAP* Pls. help me ...

Determine if the data are qualitative or quantitative.
blank Carbon is an organic molecule.
blank The forest is 25% oak trees.
blankWater contains covalent bonds.
blankSheila’s blood pressure is 120/80.
blank The bat arm and human arm have similar bone structure
Blank =qualitative
quantitative
both

Answers

Answer:

here

Explanation:

quantitative addresses the "what" with "how many"

basically it does numbers, so using that...

answer order goes:

qualitative

quantitative

qualitative

quantitative

qualitative

What caused the shape and height difference between the Appalachian and Rocky Mountains?

Answers

The shape and height difference between the Appalachian and Rocky Mountains is primarily due to differences in the geologic processes that formed them.

The Appalachian Mountains were formed through a process called "continental collision," where two land masses collided and folded together, creating a long, relatively low range.

In contrast, the Rocky Mountains were formed through a process called "subduction," where one tectonic plate was forced beneath another, creating a taller and more jagged range.

Additionally, the age of the rocks that make up the two ranges is different, with the Appalachian Mountains being much older and more eroded than the younger and more rugged Rocky Mountains.

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In the context of visual processing in the brain, What is the purpose of parallel processing?

Answers

Parallel processing in the brain allows for the simultaneous analysis of multiple features of a visual stimulus, such as color, shape, and movement.

This enables the brain to quickly and efficiently process complex visual information and make sense of the world around us.

Parallel processing is an essential function of the visual system that allows for the efficient and rapid processing of visual information. It enables the brain to analyze multiple features of a visual stimulus at the same time, including color, shape, and movement, which allows for a more accurate and detailed interpretation of the visual environment. By processing information in parallel, the brain can quickly make sense of complex visual scenes and identify important objects or stimuli, such as predators or food sources. This mechanism is critical for survival in the natural world and is a key factor in how we perceive and interact with our environment.

In summary, parallel processing is a fundamental aspect of visual processing in the brain. It enables the simultaneous analysis of multiple visual features and plays a critical role in our ability to interpret and respond to the world around us

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Some resources are considered limited. These resources are renewable if they are used carefully. Which of these is an example of a limited resource?
A. Aluminum
B. Geothermal energy
C. Solar energy
D. Fertile soil

Answers

Answer:

Fertile soil

If soil erosion becomes so  large then the soil will lose fertility.

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Fertile solid I’m not sure and let me know if it is correct

The process by which a bacteria cell divides into two identical cells is called
.

Answers

Answer:

Explanation:

Cloning is a hot ethical issue in the scientific community, but bacteria clone themselves all the time. In a process called binary fission, one bacterium doubles its size and genetic material, then splits to produce two identical cells. In a process called binary fission, one bacterium doubles its size and genetic material, then splits to produce two identical cells.

Explanation:

In a process called binary fission, one bacterium doubles its size and genetic material, then splits to produce two identical cells.

what is MKS system?​

Answers

Answer:

MKS system is the system of measurement in which length is measured in meter(m), mass in kilogram(kg) and time in second(s)

describes the response of auditory nerve fibers that allows for the plausibility of the theory of frequency representation:

Answers

The cochlea sends information about sound stimuli to the cochlear nucleus of the brainstem via auditory nerve fibres.

Depending on whether receptor cell population in the cochlea is contacted, the neurons that give rise to these fibres can be split into two categories.

Basically, vibrations (sound signals) are transmitted to the brain via the auditory nerve. Remember that hearing sounds is made possible by several different parts of the ear, not just the auditory nerve. A number of additional ear components are also involved.

Some sensory systems that provide information that is relevant to motor functions are distinguished by a "spatial code" in addition to a "temporal code" because they display characteristics that are tailored to specific spatial directions. Examples include otolith and semicircular canal afferents, as well as muscle spindle afferents.

Complete question:

The volley principle first proposed by Weaver & Bray (1937)

describes the response of auditory nerve fibers that allows for the plausibility of the theory of frequency representation:

a) place code

b) temporal code

c) population code

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If both glucose and starch were added to the inside of the artificial cell at the start of the experiment state where starch would be located after 20 minutes?

Answers

Because the starch is too large to fit through the pores in the artificial cell, it would stay inside the cell.

It recognized the starch in the "cell" and changed the hue to a blue-black to show its presence. Any starch had Lugol's Iodine, which diffused out. This is due to the presence of a solution outside the "cell," which turns blue-black when starch is present.

Due to its size and direct rejection by the hydrophobic tails, glucose cannot permeate a cell membrane by simple diffusion. Instead, it crosses through assisted diffusion, which includes molecules crossing channel proteins to traverse the membrane.

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the rumbling noise caused by the movement of gas in the intestine is known as _____.

Answers

The rumbling noise caused by the movement of gas in the intestine is known as stomach rumble.

A stomach rumble, additionally called a bowel sound or peristaltic sound, is a rumbling, growling or gurgling noise produced with the aid of using motion of the contents of the gastro-intestinal tract as they're propelled via the small gut with the aid of using a sequence of muscle contractions known as peristalsis. Your belly simply made a growling sound known as borborygmus. That's due to the fact while the muscle groups for your digestive device circulate food, liquid, and gas via your belly and small gut, it produces a rumbling sound.

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The lissencephalic individual in the chapter's opening vignette had a brain that lacked ______.

Answers

Reactive astrocyte responses with increased number (variables), length and complexity of cellular processes.

In the central nervous system, astrogliosis promotes post-injury repair processes  such as inflammation and necrosis. Axonopathy, Distal CNS and PNS - Axonal degeneration affecting distal portions of peripheral nerves and  long axons of the CNS (spinal cord). PNS Distal Axonopathy - Neuropathy with degeneration of peripheral nerve endings and anterior terminal axons. Axonal rupture – Axonal injury of peripheral nerves degenerates distal to the site of injury, leaving the scaffold intact, increasing the potential for regeneration and enabling effective reinnervation. CNS blood-brain barrier – barrier to the free movement of certain substances from brain capillaries into CNS tissues. It relies on tight connections between capillary endothelial cells and selective transport systems for these cells.

The basement membrane of endothelial cells and the foot processes of astrocytes adjacent to the basement membrane may play a role in barrier function.

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this marine biological zone is characterized by green vascular plants which grow along the shoreline of shallow estuaries and mudflats in tropical and sub-tropical climates. These plants are adapted to living in salty (haline) environments and are able to drink sea water without being affected by the salt. In general, the leafy portion (canopy) of these plants grow out of the water, but the roots are often submerged in the water (or very close to where the water meets the land). The name of this marine biological zone is: a. Mangrove forest b. Rocky intertidal zone c. Sandy shoreline d. Kelp forest e. Coral reef

Answers

The correct answer is a. Mangrove forest.  the described marine biological zone is known as a mangrove forest.

Mangrove forests are characterized by green vascular plants that grow along the shoreline of shallow estuaries and mudflats in tropical and sub-tropical climates. These plants, known as mangroves, have adaptations that allow them to live in saline environments. They are able to tolerate and even drink seawater without being adversely affected by the high salt content.

Mangroves typically have a canopy of leafy vegetation that grows above the waterline, while their roots are submerged in the water or very close to the water-land interface. These roots provide stability and support to the trees in the soft, muddy substrate.

Mangrove forests play a crucial role in coastal ecosystems as they provide habitat for a diverse range of organisms, including fish, crustaceans, and birds. They also serve as a protective buffer against coastal erosion and storm damage.

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Escriban las diferencias y las semejanzas que existen entre los metodos citotaticos y los citotoxicos

Answers

Answer:

Ambos son similares en sus acciones.

Explicación:

La principal diferencia que existe entre los métodos citotóxicos y citotóxicos es que los citotóxicos son las sustancias que envenenan la célula, mientras que los métodos citotóxicos son las formas de toxicidad celular. Tanto los métodos citotóxicos como los citotóxicos son similares en su acción porque tanto los métodos citotóxicos como los citotóxicos dañan la célula. Tanto en los métodos citotóxicos como en los citotóxicos, ambos causan toxicidad en la célula que inhibe el crecimiento y la estructura normales de la célula.

What are sense organs? ​

Answers

Sense organs are a part of the body that responds to external stimuli by transmitting nerve impulses.
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Sense organs ~

Sense organs are the ones that responds to external stimulus, such as heat, light, chemicals, etc

For example :

Eyes are sense organs that responds to visual stimulus like change in light intensity.

Ears are sense organs that respond to sound stimulus, like Loud music, or change in intensity of sound.

Help ASAP

Which of the following correctly describes the process of cellular respiration?
O A. Carbon dioxide + sugar + sunlight + sugars + water
O B. Carbon dioxide + water + sunlight → sugars + oxygen
O C. Sugars + oxygen → energy + carbon dioxide + water
D. Sugars + carbon dioxide + energy + oxygen + water

Answers

Answer:

C

Explanation:

Which process requires ATP in order to release particles from a cell to maintain homeostasis?​

Answers

Answer:

Active Transport uses energy (atp) to maintain homeostasis within cells. Organisms use energy contained in their cells to allow proteins to make channels in the membrane for transport.

i need help with this question please

i need help with this question please

Answers

Answer:

Raise the beams in less time

Explanation:

As the crane carries the beams in a lesser time its energy will reduce by time

enzymes that are always present, regardless of the amount of substrate, are

Answers

Enzymes that are always present, regardless of the amount of substrate, are called constitutive enzymes.

These enzymes are required for essential cellular processes and are constantly active in the cell. They are synthesized in a constant amount in the cell and do not require any regulation. Unlike inducible enzymes, constitutive enzymes do not require a signal or external stimuli to be produced. Examples of constitutive enzymes include enzymes involved in glycolysis, citric acid cycle, and oxidative phosphorylation.

These enzymes are crucial for energy production and maintenance of cellular metabolism. Overall, constitutive enzymes play a vital role in maintaining the normal functioning of the cell and are an important part of the cellular machinery.

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An area of raised land in the middle of a river. Mountains and glacier in the distance. A geologist finds this ridge of sediment while out in the field. The geologist notices a glacier in the distance. What feature is this ridge? kettle loess moraine delta.

Answers

The feature of this ridge is Moraine, which is formed by the reformation of glaciers.

What do you mean by Ridge of sediments?

It is a type of erosion that leads to the formation of sediments in the shape of grains.

Moraine forms a ridge-like structure due to the gradual deposition and weathering of sand, stones, pebbles, and other compounds. Moraines are also found over the surface of glaciers in sheet form.

Therefore, the feature of this ridge is Moraine, which is formed by the reformation of glaciers.

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Answer: C moraine

Explanation: i just did it and got it right :)

an operon is controlled by a repressor. when the repressor binds to a small molecule, it binds to dna near the operon. the operon is constitutively expressed if a mutation prevents the repressor from binding to the small molecule. the type of control illustrated is:

Answers

A repressor regulates an operon. The repressor attaches to DNA close to the operon when it binds to a tiny molecule. If a mutation disables the repressor from attaching to the chemical, the operon is upregulated.

What is operon and its function?

Genes for functionally related proteins are linked together on the DNA in a structure called an operon, which is a mechanism for microbial and viral genetic control. This quality allows for the continuous control of protein synthesis in response to cell needs.

How do operons develop?

In theory, loss or rearrangement can result in the formation of new operons. First, genomic reorganizations may bring two families that were never previously close to one another into contact, allowing for co-transcription.

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Suggest how coeliac disease could affect the growth of a child

Answers

Answer:

In celiac disease, gluten triggers the immune system to damage villi. Villi (VIL-eye) are finger-like projections lining the small intestine that absorb nutrients from food and send them into the bloodstream. Damaged villi can't absorb the vitamins and minerals that a child needs to grow.

Explanation:

Hope it help :)

Correct me if im wrong(if its wrong sorry)

It could make them be short for the rest of their life

Why would a farmer use sustainable methods of food production rather than monoculture

Answers

Answer:

Sustainable farming may be more labor intensive. Organic produce has less pesticide residue. ... Sustainable agriculture has less soil degradation.

Explanation:

In which types of cells must mutations occur in order for the mutation to be passed on to future generations?

1. Somatic cells
2. Genes
3. Gametes
4. Alleles

Answers

Answer:

Genes

Explanation:

Mutations occurs on genes

Answer:

2. Genes.

Explanation:

Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates.

Match the property of water to its description

Answers

Matching the Property of water

Water molecules stick together due to cohesion.

Water molecules adhere to other substances.

High surface tension causes the bonds that keep water molecules together to flex and stretch before breaking.

Water can store a lot of heat before transitioning from a liquid to a gas due to its high heat of vaporization.

Water has a high specific heat, which means it can store a lot of heat without altering its appearance. Cold water seems to be warm water.

Evaporative cooling: Because water can transmit heat, it is employed to assist terrestrial creatures regulate their body temperature.

Ice floats because its crystalline lattice makes it less dense than liquid water.

Many chemicals may dissolve in water and are so transported via the body's water.

Cohesion [Select] Adhesion [Select] a surface with a high surface tension High evaporation temperatures [Select] [Select] a high specific heat [Select] Evaporative cooling Water that is solid is less dense than water that is liquid. The solvent you choose. Water retains a lot of heat without changing its appearance; cold water seems to be warm. Quick boiling occurs when using low heat. Since water can transfer heat, it is utilized to help keep terrestrial species' bodies at a constant temperature. Bonds keeping water molecules together will flex and stretch before breaking. Water molecules bind to other things. In the winter, London is colder than Chicago. Heat may be stored in water for a long time before it turns into a gas. Ice is produced by the crystalline matrix of ice.

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please hurry and I will give you brainlest if your show your workDave has outgrown the bike he rode when he was small. So, for his twelfth birthday, his parents surprise him with a five-speed Blaze Rider 2000! Dave has never had a bike with multiple speeds before, and he is eager to learn how it works. He starts by testing the middle speed. There is a proportional relationship between the number of times Dave pedals, x, and the number of times the wheels rotate, y. What is the constant of proportionality? Write your answer as a whole number or decimal. wheel rotations per time Dave pedals An account was opened with $1,000 eight years ago. Today, the account balance is $1,700. If the account paid interest compounded semiannually, how much interest on interest was earned? Please enter your answer in dollars to two decimals (cents) without a $ sign. An investment will pay you $400 per year for 25 years with the first payment received 9 years from today. If you use a 8% rate to evaluate investments, how much would you pay for the investment today? Please enter your answer in whole dollars without a $ sign. You are planning to retire in 30 years and are planning a 20 year retirement. Prior to retirement, you will save $1200 at the end of each year. If your investments can earn 8% per year over the entire time, how much can you withdraw at the end of each year during retirement? Please enter your answer in whole dollars without a $ sign. One bank will pay you 3.8% interest compounded annually. If you invest $1000 today, what simple interest rate would you need to earn at a competing bank to have the same amount of money in 9 years? Please enter your answer as a percentage to one decimal without a % sign. You buy an antique today for $1000 and sell it 3 months from today for $1100. What is the difference between the EAR and APR? Please enter your answer as a percentage to one decimal without a % sign. You deposit $200 each year in an account for 15 years and then $400 each year in the same account for the 15 years after that. If you are earning 8% annual compounding interest in the account the entire time how much do you have in 30 years? Please enter your answer in whole dollars without a $ sign. Which of the following could occur if two partially reproductively isolated populations become sympatric? Check ALL that apply.A. Gene flow between the populations will occurB. The populations may eventually become separate species through reinforcementC. The populations will continue to be partially reproductively isolatedD. The populations may eventually lose their genetic distinctivenessE. Hybrids will be inviable or infertile Help with the question above please???? The length of the missing sides Help!! Willmark brainliest!Can you guys please answer these 2 questions??? the ability to influence the outcome of the projects diminishes with time. 1.29 as a fraction in the simplest form You believe that studying hard leads to good grades, yet you can't help but watch an episode of your favorite show. This inconsistency is an example of: Read the excerpt from "Freedom Walkers by Russell Freedman. Early Friday morning, some students helped Robinson load leaflets into her car. She taught her classes from 8 A.M. to 10 A.M., then, accompanied by two senior students, set out to distribute the notices. Other Womens Council members were fanning out across town, doing the same thing. They stopped at black elementary, junior high, and high schools, where students were waiting to distribute the handbills in school so they could be taken home to parents. Leaflets were also dropped off at churches, stores, taverns, beauty parlors, barber shops, and every other available place. By the time the citys black ministers and civic leaders were ready to meet on Friday evening, thousands of anonymous notices had been circulated in Montgomerys black neighborhoods.How do key details deepen the readers understanding of how the Black community worked together?The excerpt emphasizes that thousands of leaflets were given out. The excerpt lists the locations where the leaflets were dropped off.The excerpt shows that many different people helped distribute the leaflets.The excerpt states that the leaflets were distributed before the evening meeting. Transferring a Client -Responsibilities of a Nurse 1. transferring a Client2..Receiving a transferred client the hill company produced 5,000 units of x. the standard time per unit is 0.25 hours. the actual hours used to produce 5,000 units of x were 1,350 hours. the standard labor rate is $12 per hour. the actual labor cost was $18,900. what is the total direct labor cost variance? find the quotient 4 4/5 divided by 4/5 Please help me ASAP?!!!! Please look at the picture and answer it. Thank you Which of the following is true about the Topaz internment camp?OPrisoners were paid a small fee for work.O Prisoners were allowed to leave for work.O Prisoners were primarily women.OPrisoners were unable to permanently leave.O Prisoners were executed by the guards.. which of the following statements is false? question 9 options: contribution margin equals sales minus the costs that vary in proportion to production. contribution margin ratio describes the percentage of each sales dollar used to pay variable costs. product costs can be either variable or fixed costs. at break-even, the target profit is zero. you need a 35% alcohol solution. on hand you have a 245ml of a 90% alcohol mixture. how much pure water will you need to add to obtain the desired solution For the following, please answer "True" or "False" and explainwhy.Firms price discriminate to maximize total revenue. In the last sentence of the passage, the author uses the parenthetical clause though hope should always be deluded primarily toA. convince the audience that the pursuit of happiness is futileB. assert that hope is important regardless of whether it comes to fruitionC. discourage the audience from indulging in unreasonable expectationsD. highlight the positive and negative aspects of hopeE. imply that the value of hope depends on its close connection with delusion