What structural feature makes the 20 common amino acids different from one another?.

Answers

Answer 1
The R-group (side chain) is what makes each amino acid unique. Each of the 20 amino acids has a different side chain structure.

Related Questions

Abiotic factors in an ecosystem might include one or more of the following: Question 4 options: Slug, ants, coyote, birds, armadillo, trees, grass, flowers and moss Air, water, soil, rocks, and fish Air, water, soil, and rocks Slug, ants, coyote, birds, and armadillo.

Answers

Answer:

abiotic basically means non-living organisms. therefore the answers are: air, water, soil & rocks

:)

do both animal and plant cells have mitochondria ?

Answers

mitochondria are present in both plants and animals which provides energy for respiration and metabolism.

Answer:

Yh both animals and plant cells have mitochondria

Explanation:

Select the Nuclear membrane closeup. How is the nuclear membrane similar to the cell membrane? Select the Nuclear membrane closeup. How is the nuclear membrane similar to the cell membrane?

Answers

Answer:

A nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.

The similarities between nuclear membrane and cell membrane are both are made up of lipid bilayers, main functions of both membranes are protection and transportation, both are extremely important for the cell survival.

What is nuclear membrane?

"The nuclear membrane is a double layer that encloses the cell's nucleus, where the chromosomes reside."

What is the other function of nuclear membrane?

"The critical function of the nuclear membrane is to act as a barrier that separates the contents of the nucleus from the cytoplasm."

What is cell membrane?

"The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment."

What are the other functions of cell membrane?

The other functions of the cell membrane include

identification,communication,regulation of solute exchange through the membrane,isolation of the cytoplasm from the external environment.

What is lipid bilayers?

"The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules."

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Scientists predict that a 1.5 to 2.5 degree Celsius rise in global temperatures could put __________% of the world's plants and animals at an increased risk of extinction.

Answers

Answer:

20-30

Explanation:

Summarize the steps of glycolysis using the key terms ATP, ADP, NAD+, NADH, glucose, and pyruvate.

Answers

Explanation:

LOOK AT THE FLOW CHART

IT MIGHT HELP U OUT

In this question we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

Steps of glycolysis

1st stage

This step, also known as the preparatory phase or investment phase, consists of five reactions:

1. Phosphorylation of the glucose molecule occurs, in which it receives phosphate from the ATP molecule, forming glucose 6-phosphate;

2. The glucose 6-phosphate molecule undergoes a rearrangement and forms fructose 6-phosphate;

3. Another ATP molecule supplies phosphate to the fructose 6-phosphate molecule, giving rise to fructose 1,6-diphosphate;

4. The fructose 1, 6-diphosphate molecule undergoes a rearrangement, with the opening of its benzene ring, giving rise to two molecules with three carbons each: glyceraldehyde 3-phosphate and dihydroaxethone phosphate;

5. The dihydroaxethone molecule undergoes a rearrangement giving rise to another glyceraldehyde 3-phosphate molecule.

It can be seen that at the end of this first phase, there was only energy expenditure, with the conversion of two ATP molecules into ADP.

→ 2nd stage

This stage, also known as the profit or energy compensation stage, involves energy gain and also consists of five stages, described below:

6. Two molecules of NAD+ (nicotinamide dinucleotide and adenine) are reduced to two molecules of NADH with electrons from the oxidation of glyceraldehyde 3-phosphate to 1,3-diphosphoglycerate;

7. Each molecule of 1,3 – diphosphoglycerate yields a phosphate to one molecule of ADP, thus giving rise to two molecules of ATP and two molecules of 3 – phosphoglycerate;

8. A rearrangement of 3 – phosphoglycerate molecules occurs, forming 2 – phosphoglycerate;

9. The 2 – phosphoglycerate molecules lose a H2O molecule, giving rise to phosphoenolpyruvate;

10. Phosphoenolpyruvate molecules provide a phosphate to an ADP molecule, yielding two ATP and two pyruvate molecules.

With this information, we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

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Which types of dietary fats can increase blood ldl concentrations ?.

Answers

Answer:

saturated and trans fat can increase blood concentration

What do we call the tiny openings in a
leaf that allow things in and out of the
leaf?
A. chlorophyll
B. Stomata
C. veins
D. blades

Answers

The answer is: B - Stomata

Robotic surgery —
O can reduce pain and recovery time
O eliminates the need for doctors
Owill be possible in a few years
O uses particles smaller than one micron

Answers

Answer: A. can reduce pain and recovery time

What does the information in DNA molecules provide instructions for?
a. Assembling amino acids into protein molecules

b. Assembling protein molecules into amino acids

c. Rearranging genes into protein molecules

d. Rearranging genes into traits

Answers

Answer: (B)

Explanation: DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

What do the polar bears, reindeer, and shrubs that live in a single area make up? organism population community ecosystem.

Answers

Answer:

Ecosystem

Explanation:

It would be a ecosystem because the animals live together to make a liveable enviornment like a food chain. And all the organisms can sustain itself.

Answer:

ecosystem

Explanation:

what is an advantage of using genetically engineered seeds

Answers

The possible benefits of genetic engineering include: More nutritious food. Tastier food. Disease- and drought-resistant plants that require fewer environmental resources (such as water and fertilizer)

name any parasite that is likely to be picked up from eating half cooked meat​

Answers

Answer:

Trichinellosis, also called trichinosis, is caused by eating raw or undercooked meat of animals infected with the larvae of a species of worm called Trichinella.

Explanation:

Answer:

Trichinosis

Explanation:

People can get this disease by eating raw or undercooked meat from animals infected with the parasite. Often these infected meats come from wild game, such as bear, or pork products.

In the synthesis of proteins, what is the function of messenger-rna molecules?.

Answers

they say which amino acids should put next to each other to make the desired protein

A stem cell divides by mitosis to yield either two daughter cells that are stem cells like itself, or one that is a stem cell and one that is a partially specialized _____ cell.

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A stem cell divides by mitosis to yield either two daughter cells that are stem cells like itself, or one that is a stem cell and one that is a partially specialized progenitor cell.

Please help I don’t understand

Answers

Based on the chart provided:

Deficiency of vitamin A causes Night blindnessDeficiency of vitamin C causes scurvy.Cereal Z is recommended for the children because of its high vitamin D content. 2 servings of cereal Y is required.

What are vitamins?

Vitamins are organic food substances required by man man and other animals only in small amounts for normal growth and healthy development.

The main vitamins are vitamins A , B, C, D, E and K.

Deficiency of vitamin A causes Night blindness

Deficiency of vitamin C causes scurvy.

Vitamin D is required for strong bones and teeth.

Cereal Z is recommended for the children because of its high vitamin D content.

From the chart, cereal Y contains 4 mg of vitamin B.

Since, the recommended daily allowance of vitamin B is 8 mg

Cereal Y contains 4 mg of vitamin B.

8/4 servings of cereal Y is required.

Therefore, 2 servings of cereal Y is required.

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Which of these is an advantage of factory farming?
A. Less efficient operation than family farms
B. More job opportunities than family farms
O C. Smaller profit margin than family farms
D. More expensive products than family farms

Answers

B. More job opportunities than family farms

Provide examples of biotic and abiotic factors that affect an organism's range.

Answers

Answer:

water air soil sunlight and minerals

Explanation:

The biodiversity and distribution of organisms within an ecosystem is due to both abiotic (non-living) and biotic (living) factors.

State the trophic level of each of the following: cow: ______________________ grass: _____________________ man: ______________________ mushroom: __________________

Answers

Answer:

The cow is a Primary Consumer since it feeds off the Grass.

The grass is a Producer since it's an autotroph (Can make its food through Photo synthesies. )

The Mushroom is a decomposer since it's a fungus.

And lastly, the man would be a Tertiary consumer since most of us are omnivores.

Please help!


1) Scientists who studied wildlife in and around the Great Lakes area found their results to be disturbing. A large number of birds were born with partially developed eyes, crossed bills and webbed feet. What can you infer is the reason?

Group of answer choices


Deforestation.


Contaminated sediments infiltrated the water.


Other birds migrated to the area and were crossbred.


An invasive plant species was introduced into the area.




2) Eli wants to reduce his impact on the environment. Which activity should Eli do to help the environment and his community?

Group of answer choices


increase the amount of water he uses


reduce the amount of walking he does


increase the amount of food he consumes


reduce the amount of electricity he uses

Answers

1)contaminated sediments infiltrated the water 2)reduce the amount of electricity he uses

What happens if one part of an ecosystem is damaged?.

Answers

Answer:

probably the trees would die then we wouldn't have anything to breathe in

It effects another part of an ecosystem, everything in a ecosystem relies on another thing to survive. It basically would cause a domino effect.

etermine the amount of rock left for the following isotopes:
a) Carbon-14 has a half life of 5,730 years. A fossil sample taken from the Earth shows that
a sample that started with 850 g of C-14 now has 53.125 g. How old must this organism
be?

Answers

Carbon 14 will go through 4 “half lives” in order to go from 850g to 53.125g. This means that Carbon 14 will be 22,920 years old.
*In order to find the mass of a half life we just divide the mass by 2 to get its half.

Which protists can reproduce s3xually?
A. volvox and amoeba
B. euglena and amoeba
C. volvox and paramecium
D. euglena and paramecium
NEED THE ANSWER ASAP

Answers

Answer:

amoeba and eulgene is the answer

I believe B. Euglena and Amoeba is the correct answer

artificial method of seed dispersal​

Answers

Answer:

seed bombing or explosion

Explanation:

Seed bombing is when people throw capsules containing seeds and fertilizers at vacant lots in urban areas

insider

What is a solid outer layer of the earth?

Answers

Answer:

lithosphere

Explanation:

Earth's lithosphere includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth. The lithosphere is subdivided into tectonic plates. Further there are two types of lithosphere mainly as oceanic and continental lithosphere.

a lithosphere is a solid outer layer of earth. it’s basically the crust of earth

Do enzymes work in all pH ranges/ conditions?
(claim)

Answers

No, not sure why you would think yes!

What evidence would help us determine whether hydroponic plant food, air, or water could be involved in a chemical reaction to make food molecules?

Answers

Answer:

We use a hydroponic plant system and indicators of food molecules to investigate whether soil, plant food, water, or air.

HOPE IT HELPS, BE SAFE :3

Mangrove pneumatophore roots _______. A. Prop the trees up above the water line b. Excrete excess salt c. Absorb carbon dioxide from the air d. None of the above Please select the best answer from the choices provided A B C D.

Answers

Mangrove pneumatophore roots absorb carbon dioxide from the air.

WHAT ARE PNEUMATOPHORES?

Pneumatophores, also called breathing roots, are types of roots possessed by mangrove plants.

Mangrove plants are adapted to swampy conditions, hence, must possess adaptational features that ensures their survival.

Pneumatophores help the mangrove plants to exchange gases like carbon dioxide and oxygen in the atmosphere.

Therefore, mangrove pneumatophore roots absorb carbon dioxide from the air.

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Answer:

Its B

Explanation:

Just took test any nobody on here is right so i picked d and that not it so its b

Which spheres attract each other with the least amount of gravitational force

Answers

Answer:

Mercury

Explanation:

Assuming that you are standing on the surface of the planet, Mercury, with a mass of 3.285 × 10^23 kg, has the lowest gravity. The radius of an object has no affect on the gravity.

A farmer has grown strawberries successfully for years in field A. He recently expanded the crop into previously unused land in fields B and
C. The yield from field B is comparable to A, but the yield from field C is inexplicably low. As a microbiome expert, what might you predict
about the soil of fields A, B, and C?

Answers

Given what we know, we can confirm that the soil in field C most likely lacks the presence of microbes that help plants grow or has a higher presence of microbes that are harmful to plant growth.

What does it mean for a microbe to promote plant growth?

This would mean that the microbe in question has a symbiotic relationship with plants. Meaning that it promotes plant growth in exchange for nutrients from the plant, and both organisms will benefit, similar to microbes such as AM fungi.

Therefore, we can confirm that the soil in field C is likely to lack plant symbiotic microbes that are most likely found in fields A and B.

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When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of.

Answers

Answer:

hope it helps

Explanation:

density dependent inhibition

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