What is the secondary level of structure in proteins?

Answers

Answer 1
The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone.

Related Questions

which characteristic allows carbon to form chains and rings eith other carbon atoms

Answers

Because each carbon is identical, they all have four valence electrons, so they can easily bond with other carbon atoms to form long chains or rings

Ali is AB blood type and Sarah is also AB blood type. What is the chance they will have a child with blood type A?

Answers

Answer:

25 percent

Explanation:

Answer:

yesss

Explanation:

if parent 1 is AB and and parent 2 is also AB blood Group then thier child's possible Blood Group is A, B, AB

Thus, Ali and Sarah's Child can be with blood type A

-TheUnknownScientist

Winston studies a topography map that shows camping and hiking areas. Winston is most likely using the map for which purpose? science engineering government recreation

Answers

Answer: D Recreation

Explanation:

camping and hiking are recreational activites so D is the correct answer

Winston is most likely using the map for recreation. Thus, the correct option for this question is D.

What is a Topography map?

A topography map is characterized as a type of map which indicates detailed graphic representations of features that appear on the Earth's surface.

Examples of such features in topographic maps may include roads, buildings, urban development, railways, airports, names of places and geographic features, national and international boundaries, etc.

Recreational activities like hiking and camping are most probably related to features that are undoubtedly based on the topographic maps of the geographical locations.

Therefore, Winston is most likely using the map for recreation. Thus, the correct option for this question is D.

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Tons of points help asap


______is the most important condition for fossilization.


a. Rapid burial

b. A changing environment

c Quick decomposition

Answers

Answer: a changing environment

Explanation: A changing environment is the most important thing for fossilization. It will freeze the fossil and it will get stuck the the ground or in a rock. The answer to the question is a changing environment.

Anticlines and synclines are types of folds created by compressional stresses.
I ONLY HAVE 30 POINTS

True

False

Answers

false i’m pretty sure

Answer:

True

Explanation:

MM, I took the test

What causes a protein to be released from the ribosome

Answers

Answer:

The release factors cause the ribosome peptidyl transferase to add a water molecule to the carboxyl end of the most recently added amino acid in the growing polypeptide chain attached to the P-site tRNA. This causes the polypeptide chain to detach from its tRNA, and the newly-made polypeptide is released.

A stop codon causes the ribosome to separate from the mRNA molecule and release the protein for the cell to utilize. The relationship between transcription (DNA to mRNA) and translation (mRNA to protein) in prokaryotic cells is so strong that.

What protein to be released from the ribosome?

The ribosome peptidyl transferase adds a water molecule to the carboxyl terminus of the most recently added amino acid in the expanding polypeptide chain connected to the P-site tRNA as a result of the release factors.

Protein release factors (RFs) recognize stop codons located in the A site of the small ribosomal subunit and initiate peptide release to the ribosome.

Therefore, As a result, the freshly produced polypeptide is released and the polypeptide chain separates from its tRNA.

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How is the way scientists use the word theory different from the way people use the word in everybody language

Answers

People in everyday language use theory as a guess and estimation
Scientists use scientific method and do all sorts of experiments to prove their theory

What is the cell membrane made of. Proteins. Cellulose. Carbohydrates. Lipids

Answers

With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

hopeeee this helped <3

Answer:

A, b, d

Explanation:

eng2021

what is the function of genes?

Answers

Answer:

they help in the transfer of hereditary characteristics from parents to offspring

KEY:
a. carbohydrate
b. fats and oils
C. protein
d. nucleic acid
20. contains the bases adenine, guanine, cytosine, and thymine
21. the 6-carbon sugar, glucose
22. polymer of amino acids
23. glycerol and fatty acids
24. enzymes
25. long-term energy storage
26. genes
27. plant cell walls
PLEASE MATCH THEM

Answers

20. d
21. a
22. c
23. b
24. c
25. b
26. d
27. a

Pls answer as many questions of the remaining numbers as you know of the water cycle. Please help I forgot

Answers

Answer:

Explanation:

4. Hot water

5. Steam

6. Cold air

7. a dew type thing

those are the only ones i know. I hope this helps you!!

Which two materials are part of soil?
O A. Pieces of metal
B. Once-living matter
C. Trees and grass
D. Small bits of rock
SUBMIT

Answers

Answer:

C

Explanation:

because it comes out by nature

Answer:

B and D

Explanation: A.P.E.X

Which of the following would be expected to have plentiful access to potable water?
a. Africa
b. China
C. Europe
d. South America​

Answers

Answer:

c. Europe

Explanation:

I just went to quizlet.com

Europe is expected to have plentiful access to potable water.

What is Potable water?

Thus is the type of water which is suitable for human consumption. Europe is believed to have plentiful access to potable water.

This is because of less pollution access to aquifers which provide clean sources of water for consumption by the people hence the reason why option C was chosen as the most appropriate choice.

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How do you get energy from ATP?

Break off the first phosphate

Break off the second phosphate

Break off the third phosphate

Break off the Adenine

Answers

Answer:

gratciat

Explanation:

the muscle that has the best capability to slide the mandible forward relative to the skull is the:
a. digastric muscle (anterior belly)
b. temporalis muscle
c. external pterygoid muscle
d. internal pterygoid muscle

Answers

Answer:

C

Explanation:

The lateral or external pterygoid muscle pulls the mandible forwards.

Which feature separates humans from other primates?
smaller brain size
bipedalism
use of tools
complex social skills

Answers

the answer to your question will be bipedalism because primates use their rear legs to walk/run. but humans do not in my opinion

hope this helps :)

Answer:

Bipedalism

Explanation:

took the test

If there are 5 g of carbon on the reactants side, how many g of carbon should you end with?​

Answers

Answer:

69,420

Explanation:

Answer:

It is 69,420 easy

Explanation:

During chemical weathering what can happen to the type of rock that has undergone chemical weathering.
A. No new rock is created just smaller in size. B. A new rock is produced that is different from the original rock. C. A new rock is produced that is the same as the original rock. D. A new rock is produced that is larger than the original rock

Answers

Answer:

A new rock is produced that is different from the original rock.

Explanation:

During chemical weathering, a new rock is produced that is different from the original rock.

Chemical weathering is the chemical decomposition of rocks to form sediments and soils. A large chunk of rock combines with water, air and other chemical materials. This cause chemical action and a new substance is produced. This process is known as chemical weathering.

Physical weathering is the breaking down of rocks into smaller fragments.

Chemical weathering leads to the formation of a new rock is produced that is different from the original rock that has undergone chemical weathering is formed.

Weathering refers to the process by which rocks break down. The weathering of rocks may be chemical, physical or mechanical. Chemical weathering refers to the breakdown of rocks due to the action of chemical agents.

During chemical weathering a new rock is produced that is different from the original rock that has undergone chemical weathering is formed.

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I need help pls it science btw

Answers

Answer:

a light year is 2 seconds

which do you prefer to use organic fertilizer or inorganic fertilizer explain​

Answers

Answer:

Organic fertilizers continue to improve the soil long after the plants have taken the nutrients they need. Therefore, the longer your soil is fed with organic fertilizers, the better its composition and texture. So, while inorganic fertilizer is cheaper in the short term, it adds less to the soil in the long term.

How are extrusive rocks formed?

Answers

Answer:

Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth's surface. These are the rocks that form at erupting volcanoes and oozing fissures.

Explanation:

Answer:

c

Explanation:

bc its the right answer

When would a cell need to use active transport instead of passive transport?
Choose 1 answer:
To move water to the external environment
To take in nutrients that have a lower concentration outside the cell
To transportions with a high internal cell concentration out of the cell using channels
To diffuse oxygen across the cell membrane

Answers

Answer:

d i think

Explanation:

When would a cell need to use active transport instead of passive transport To diffuse oxygen across the cell membrane

what are the function of cell membrane ?

The cell membrane or plasma membrane is a thin selectively semi-permeable membrane which surrounds the cytoplasm, the primary function of the is to provide protection the integrity of the interior of the cell.

The cell membrane is otherwise called as multifaceted membrane that envelopes a cell's cytoplasm and help the cell to maintain the its shape.

Cell membrane is made up of Proteins and lipids where the mix or ratio of proteins and lipids can vary depending on the function of a specific cell.

Phospholipids are the most important components of cell membranes which are arrange to form a lipid bilayer and certain substances can diffuse through the membrane to the cell's interior.

some cell organelles are surrounded by cell membranes, The nucleus and mitochondria have its own membrane.

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Are there organelles that only exist in animal cells? If so, state it and it's
function.​

Answers

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.

Read the passage below and use the information to answer the question that follows. Joey is the oldest of three children. Like his siblings, he has has brown hair and green eyes. His sister likes to dance and his brother is a talented guitar player, but Joey does not like either of these activities. He enjoys basketball. Since Joey is very tall, he plays center on the basketball team at his high school, practicing hard so that he can get a basketball scholarship to college. Which of the following statements about Joey refer to genetic factors? Check all that apply. Joey has brown hair. Joey likes to play basketball. Joey has green eyes. Joey is very tall. Joey hopes to get a college scholarship

Answers

Answer:

Joey has brown hair

Joey has green eyes

Joey is very tall

Explanation:

I just checked

Joey has brown hair

✔Joey has green eyes

✔Joey is very tall

Edge 2021

What do scientists call the S-layer in archaebacteria?
proteins or glycoproteins that make up the cell wall
proteins or glycoproteins that play a part in reproduction
proteins or glycoproteins that help make ribosomes
proteins or glycoproteins that make up the cell membrane

Answers

Answer:

proteins or glycoproteins that make up the cell wall

Explanation:

Rb is an important protein for controlling cell proliferation by blocking entry into S phase. How does it exert its effect?

Answers

Answer:

The main function of the RB protein is to inhibit the transition from the G1 to S phase. Its activity depends on its phosphorylation state: if RB is not phosphorylated (active state), it is bound to the transcription factor E2F, preventing its translocation to the nucleus and the activation of genes necessary for DNA synthesis; and if it is phosphorylated, by cyclin-CDK complexes, E2F is released and cell proliferation occurs.

Explanation:

Retinoblastoma (Rb) was the first tumor suppressor described and, as we know today, mutations in its structure determine a large number of cancers. Structurally, we speak of a large and multifunctional protein; which is organized in different domains. The activity of this protein is regulated, mainly, by phosphorylation at multiple sites described over the years and is involved in control mechanisms of the cell cycle, apoptosis and senescence.

Which is a sustainable practice? Operating wind farms or clear cutting or flood irrigation or overfishing

Answers

Answer:

A

Explanation:

EDG 2020

An example of sustainable practice is the operating wind farms. Thus, the correct option will be A.

What is Sustainable practice?

Sustainable practices can be referred to as the practices which support ecological, human, and economic health and also the vitality. Sustainability usually presumes that all the available resources are present in finite amount, and should be used conservatively and wisely with a view to have long-term priorities and consequences of the ways in which the available resources are used.

Wind power or wind farms are one of the most efficient technology to produce energy in a very safe and environmentally sustainable manner. It is zero emissions, local, inexhaustible, competitive source of energy and it also creates wealth and jobs for a large group of people.

Therefore, the correct option will be A.

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which is (summer, winter, fall, spring) please please help if you know! (14 points given)

Answers

Answer:

1.Spring 2.Fall 3.Winter 4.Summer

Explanation:

I think this is right because the tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur. The Earth revolves around the Sun. ... The Earth's movement around the sun causes the seasons.

I hope this will help, but if you feel unsure of my answer the explanation will probably point to the correct answer.

Why is it important for cells to buffer solutions against rapid changes in pH? What does a buffer do?

Answers

Answer:

Water's polarity gives it the ability to dissolve both ionic compounds nad other polar molecules. Why is it important for cells to buffer solutions against rapid changes in pH? Buffers dissolved in life's fluids play an important role in maintaining homeostasis in organisms.

Explanation:

special features of a paramecium ​

Answers

Answer:

Paramecium is a single cell, living organism that can move, digest food, and reproduce.

Explanation:

Paramecium is a microorganism, which means that it is visible only under a microscope.

The paramecium has a contractile vacuole. It moves in spiral movements, rotating around an invisible axis.

It has no sense of sight, taste, touch, or hearing. However, he has some sense of movement.

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