How many essential amino acids must be obtained from food?
a)8
b)20
c)12
d)26

Answers

Answer 1

Answer:

I believe the answer is c)12

Answer 2

Answer:

8 or 9

Explanation:


Related Questions

what is short transfer cell in the tip of leaf?​

Answers

transfer cells are located near the finest branches and terminations of sieve tubes in leaves.

Why do heart cells have different characteristics than skin cells?
Heart cells have different DNA than skin cells.
Heart cells express different genes than skin cells.
Heart cells reproduce by cell differentiation.
Heart cells reproduce by mitosis.

Answers

Answer:

Heart cells express different genes than skin cells. B

Heart cells have different characteristics than skin cells because heart cells express different genes than skin cells.

Humans as multicellular organisms possess different cells in our body system. These cells perform varying functions in the body.

The different functions performed by different cells is attributed to the cellular differentiation. Cellular differentiation is the process whereby an undifferentiated cell becomes specialized.

The cellular differentiation occurs due to the difference in gene expression in each specific cell. All cells contain the same DNA sequence, however, they are expressed differently.

Therefore, heart cells have different characteristics than skin cells because heart cells express different genes than skin cells.

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Which of these parts of the cell membrane are nonpolar and keep cells
separate from water?

Answers

The fatty acid chains

Which of the following substances is NOT able to simply diffuse across the 1 point
plasma membrane?*
Water
Oxygen
Carbon Dioxide
Sodium

Answers

Answer:

Sodium

Explanation:

because ions have a charge which prevents them from moving across the cell membrane through simple diffusion

Please help! bio questions

Answers

The answer to this question is A I believe. :)

Hope this helps!!

What is the speed of bicycle B?
A. 0.2 km/min
B. 0.3 km/min
C. 4 km/min
D. 6 km/min ​

Answers

I think it might be B
It is b because if 10 minutes is 3 km
Then 3/10= 0.3
So the answer is B. 0.3 km/min

Match the monomer to the correct polymer. (Link one from the top list to one from the bottom list, until each one has a link to one from the other.)
--
1a. polypeptide/protein
1b. polysaccharide
1c. nucleic acid
1d. lipid
--
2a. monosaccharide
2b. nucleotide
2c. fatty acid
2d. nucleotide

Answers

Answer:

        Polymer                                                Monomer      

1. Polypeptide/protein -----------------------→ Amino acid

2. Polysaccharide ------------------------------→  Monosaccharide

3. Nucleic acid  -----------------------------------→ Nucleotide

4. Lipid ----------------------------------------------→ Fatty acid

Explanation:

Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.

Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.

Peptides and proteins are formed by the addition of specific amino acid sequences. Polysaccharides, or complex sugars, are formed by the addition of monosaccharides, such as glucose. A nucleic acid, such as DNA or RNA, consists of chains or strands that are formed by nucleotide sequences. Lipids are the polymerized form of fatty acids.

These organisms are prokaryotic cells, mostly
extremophiles.

Answers

Answer:

A extremeophile is a prokariyite,

Explanation:

Battery operated device was invented to control the speed in rhythm of the human heart which professional was mainly involved in this invention

Answers

Answer:

Rune Elmqvist is designated with the credits of establishing the first artificial cardiac pacemaker.

Explanation:

Answer:

Your answer would be B - A Biomedical Engineer

Explanation:

I took the test on Edge 2020-21. Hope this helps, have a great day!

The number one reason organisms become endangered and/or go extinct is because of

a. poaching/illegal hunting

b. invasive species

c. pollution

d. habitat loss

Answers

Answer:

d) habitat loss

Answer: D. Habitat loss

How are Gymnosperm and Angiosperm plants different?

Answers

Answer:

Hey! :D

Explanation:

The gymnosperms, also known as Acrogymnospermae, are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes. The term "gymnosperm" comes from the composite word in Greek: γυμνόσπερμος, literally meaning "naked seeds". The name is based on the unenclosed condition of their seeds. The non-encased condition of their seeds contrasts with the seeds and ovules of flowering plants, which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo.

hope this helps

Mitosis results in
o daughter cells with twice as much DNA as the parent cell
o daughter cells with the same genetic information as the parent cell
O four daughter cells
gametes

Answers

answer: daughter cells with the same genetic information as the parent cell

Identify the parts of the digestive system. Select all that apply. * 5 points stomach esophagus large intestine lungs

Answers

Answer:

stomach large entestint

Explanation:

The process of petrifaction can include which of the following:

• Silica from the ash soaks into the wood, turning it to stone when it dries
• Volcanic ash blows into the water
• Living plants like trees can be submerged in water
• All of the above

Help me please :(

Answers

Pretty sure it’s all of the above

Which conditions are possible reasons for declining genetic diversity of a species.

Answers

Answer:

Explanation:

loss of habitat

inbreeding

environmental changes

widespread distribution

Can someone help pleaseeeee

Answers

Answer:

pelvic region is the answer

Answer:

A) Inguinal

Hope this helps!

                       

Please answer! It’s 5 days over due

Answers

Answer:

Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains stem cells. The stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood clotting.

Answer:

Bone marrow is a spongy tissue found inside bones.

Red bone marrow involves the production of blood cells. Yellow bone marrow produces cartilage and is important for fat storage.

The images below show the same cell, before and after reaching equilibrium. Which statement best describes what happened as the volume of the cell increased

Answers

The missing part of the question and group of options is attached as an image.

Answer:

The correct answer is - D - The number of solvent particles outside the cell decreased.

Explanation:

As the solution reached equilibrium the concentration of the solute is equal inside the cell and outside the cell, so the number of particles of the solvent must increase inside and decrease outside of the cell.

The cell volume increased due to the flow of the solvent from outside to the inside of the cell this type of diffusion of solvent is known as osmosis which leads to the swollen or bigger cell.

Answer:

The number of solvent particles outside the cell decreased.

Explanation:

Carlos states that planets that are closer to the sun have a higher surface temperature than those that are further from the sun. Why do you think Carlos is correct or incorrect?

Answers

Answer:

Yes Carlos is correct.

Explanation:

The further away an object is from the heat source, the less heat it absorbs.

Answer:

Carlos is correct

Explanation:

He is correct because when the planets are closer to the sun they get a higher tempurture

As part of an experiment, you grow some plants in an environment including carbon dioxide with radioactive carbon isotope 14C as a tracer. After a few days you take the plants out and look for the tracer. You find it primarily in the roots. How did it get there? Why is it in the roots?

Answers

Answer:

Plants make their own food with the help of photosynthesis, in which the organic carbon is formed from the inorganic carbon. Organic carbon is used as a source of energy and helps in various cellular functions.

Organic carbon mostly stored in the form of starch and other carbohydrates and also helps in forming the structure of the plants. The starch is stored mainly in the roots, fruits and stems. The main source of starch is in roots in tubers of the plants. The radioactive carbon that is found in the plant roots in the experiment is the excess carbon that stored in the roots of the plants

in which part does carbohydrate digestion begin​

Answers

Answer:

Technically, it begins within the mouth. However, the actual digestion process begins almost halfway through/down the esophagus (throat).

How does the salvation process work while you are eating

Answers

Answer:

TO MAKE THE FOOD SOFT.✌️
Make food softer so
U don’t
Choke

Water pollution control came about as a result of _______.
a.
public protest of the condition of the Cuyahoga River
b.
the Cuyahoga River fire of 1969
c.
the California oil spill
d.
environmental assessments

Answers

Answer:

B. the Cuyahoga River fire of 1969

Explanation:

i just took the test

Water pollution control came about as a result of the Cuyahoga River fire of 1969.

What do you mean by Water pollution?

Water pollution may be defined as the accumulation of undesirable substances in the water which make water harmful to living beings.

During the Cuyahoga River fire of 1969, the number of fire stations along the river doubled due to the fire that caught in the sewage water.

Therefore, water pollution control came about as a result of the Cuyahoga River fire of 1969.

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In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth and are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov. The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots. A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov.

Number of:

Solid:____
Fewspot:_____
White Overo:______

Answers

Answer:

Hello your question is incomplete below is the missing part

Suppose that 16 pairs of pintaloosa horses have one offspring per pair. How many of each phenotype would be expected? Determine the number out of 16 expected for each phenotype. Only count phenotypes for offspring expected to live past one week of age.

Answer :

Number of

solid, fewspots: 1/16

 solid, leapord: 2/16

solid, white: 1/16

Fewspots: 2/16

white overo: 2/16

Explanation:

Using the given information it can seen that one copy of OV will result in Overo, whereas two copies OVOV offspring will die soon after birth. If 16 pairs of pintaloosa (OVovLPlp) horses are mated and each have one pair of offspring, then it can represented in the table attached below:

from the table we can deduce that :

Number of

solid, fewspots: 1/16

 solid, leapord: 2/16

solid, white: 1/16

Fewspots: 2/16

white overo: 2/1

Until the middle of the 20th century, doctors sometimes suggested that
people smoke in order to reduce stress. Since then, doctors have been asking
patients who smoke to quit.
What caused this change?
A. Studies have shown that tobacco and tar in cigarettes have
negative health effects.
B. Tobacco is an illegal drug, and doctors are required to discourage
its use.
C. Tobacco is a nonrenewable resource, and the government has
restricted its use.
D. Tobacco plants have been categorized as an endangered species,

Answers

Answer:

the answers for your question is A.

Patients to stop smoking, research has established the harmful effects of tobacco and the tar in cigarettes on human health, hence option A is correct.

What is the effect of smoking on health?

One of the biggest health issues in the world today is tobacco use. Because of smoking, millions of individuals have bad health, and experts predict that smoking causes 8 million premature deaths annually. It has long been a significant health issue.

Up until the middle of the 20th century, physicians occasionally advised patients to smoke in order to relieve stress.

A significant social factor of tobacco usage has been the improvement in human attitudes toward smoking as a result of improved awareness of the negative effects of smoking.

Therefore, studies have shown that tobacco and tar in cigarettes have

negative health effects.

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Where are hot and very luminous stars shown on the H-R diagram?
top right
bottom right
top left
bottom left

Answers

Answer:

top right

Explanation:

hot starts inhabit the left hand side of the diagram. Bright stars inhabit the top. luminous means bright so it would be top right.

Answer:

bottom right

Explanation:

That is where it shows up when you look at the diagram.

5. Besides being part of the composition of bone, why else do mammals need calcium?

Answers

Answer:

It's important for the contracting muscle

Explanation:

Besides being part of the composition of bones, calcium is needed by mammals for the following processes:

Formation of skeletons and teeth.Muscle contraction.Regulation of normal heart rate and nerve functions. Blood clotting.

What is Calcium in living organisms?

Calcium in living organisms may be defined as an important nutrient that all living organisms require, including humans in order to develop various organs like teeth and bones as well as for metabolic processes.

Apart from being part of the composition of bones, calcium is also required for the proper development of teeth and skeletons. The movement of calcium ions plays an essential role in the contraction of muscles.

The influx of calcium ions into the cells of the heart significantly enhances the heart rate of an individual in the range of 1.6 to 14.10 mm.

It also plays a critical role in blood clotting.

Therefore, it is well described above.

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what are the two main categories of an ecosystem 5th grade

Answers

Terrestrial/ Land Ecosystems and Aquatic/ocean,water ecosystems

. What role does the mitochondrion play in the process of cell death?

Answers

Answer:

Explanation:

Mitochondria regulate caspase activation and cell death through an event termed mitochondrial outer membrane permeabilization (MOMP); this leads to the release of various mitochondrial intermembrane space proteins that activate caspases, resulting in apoptosis.


Where does the bloody deposit the
oxygen and nutrients?

Answers

Answer:

The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.

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