One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water depends on the relative polarity of their R groups, particularly on the number of ionized groups: the more ionized groups there are, the more soluble the polypeptide. Which of each pair of polypeptides that follow is more soluble at the indicated pH?
(a) (Gly)20 or (Glu)20 at pH 7.0
(b) (Lys–Ala)3 or (Phe–Met)3 at pH 7.0
(c) (Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0
(d) (Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0

Answers

Answer 1

Answer

The answers are below:

1.

(Gly)20 or (Glu)20 at ph 7.0

The answer is (Glu)20 because at a pH of 7 it has high negative charges so (Gly)20 is less soluble since it would remain unchanged

2.

Lys–Ala)3 or (Phe–Met)3 at pH 7.0

The answer is (Lys-Ala)3 because it has high positive charges at this pH while (phe-met)3 is lower this it is less soluble.

3.

Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0:

(Asn–Ser–His)5 is more soluble because though both of these polymers have the side chain Ser, (Asn–Ser–His)5 also have polar Asn side chain also it's His side chain is partially proponated.

4.

(Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0:

(Asn–Ser–His)5 is more soluble at ph of 3. this is because Asp residues are not fully proponated and they are also neutral, while (Asn–Ser–His)5 has its His residues fully proponated and also positively charged.


Related Questions

organisms may contain up to five levels of organization within their bodies. which level of organization is best represented by the liver

Answers

Answer:

Among the five levels,Liver shows third level of organisation. The 5 organisations in our body are cells--Tissues--Organs--Organ system--Human body.

As temperature changes, how does the movement of particles change? Why does this happen?

Answers

Answer:

As temperature changes particles movement slows down, because they are not used to certain temperatures.

Explanation:

Please help me with this bio work thanks

Answers

There are more than 20 amino acids

Proteins are made up of carbon, hydrogen, oxygen, and nitrogen (I like to remember CHON)

Protein monomers are amino acids

Covalent bonds link amino acids to form polypeptides

Enzymes are a type of protein that control the rate of reactions


I’ll fit the description of protein folding in another comment!

A change in an organism’s body is a(n) ____________. A change in the environment is a(n) ___________.
A. association, condition
B. chemical signal, display
C. internal stimulus, external stimulus
D. instinctive, learned

Answers

Answer:

chemical signal and display

Explanation:

The total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that:_______

a. The total volume of plant cells is often significantly greater than the total volume in animal cells.
b. The most reasonable explanation for this observation is that plant cells have a much more highly convoluted (folded) plasma membrane than animal cells.
c. Animal cells are spherical, whereas plant cells are elongated. plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
d. Plant cells contain a large vacuole that occupies much of the volume of the cell.

Answers

Answer:

d. Plant cells contain a large vacuole that occupies much of the volume of the cell.

Explanation:

The vacuole is a membrane-bound organelle which is often found in plant and fungi cells, as well as in certain bacteria, protists and animal cells. The vacuole is filled with water that forms a solution containing inorganic and organic compounds. The size of the vacuole may vary depending on the requirements of the specific cell type. In plant cells, vacuoles often occupy an important fraction of the overall cell volume and play key roles during growth and development, influencing diverse cellular functions ranging from photosynthesis to transpiration.

How does dr. Abooker hope to apply has work to human health

Answers

He works to be a doctor

what is the order of atp-adp cycle​

Answers

What the person above said.

All healthy, highly productive ecosystems provide which of these essential ecosystem services that involve gases in the atmosphere?

A. Increasing carbon dioxide levels in the atmosphere by the action of plants and animals.
B. Removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.
C. Removing water vapor from the atmosphere and using it to support plant growth.
D. Removing methane from the atmosphere and storing its carbon and hydrogen in the tissues of organisms.

Answers

Answer:

All healthy and highly productive ecosystems provide the essential ecosystem services that consist in removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms (option B).

Explanation:

The carbon cycle involves the path that this element has between the biosphere and the atmosphere.

As part of the carbon cycle, the carbon dioxide (CO₂) produced by the combustion of fossil fuels or organic matter and by the elimination of animals passes into the atmosphere, and must be removed.

Photosynthesis removes CO₂ from the atmosphere and converts it into organic compounds that are stored in plants. Plants, vegetables and fruits consumed by animals contain carbon that is incorporated into other living beings.

In a healthy and efficient ecosystem, CO₂ is removed from the atmosphere to become part of living beings, as organic matter.

The other options describe processes that are not related to the actual question formulation:

    A. Atmospheric CO2 does not increase due to the action of plants.

    C. Water vapor is not removed to contribute to plant growth, but rather the plants absorb water from the soil.

    D. Methane is not removed from the atmosphere or incorporated into living systems.

Compare and contrast cyclophyllideans and pseudophyllideans. Which characteristics are shared by both

Answers

Answer:

hello your question is incomplete attached below is the complete question

answer:  option 4 ( I and IV )

Explanation:

when you compare cyclophyllideans and pseudophyllideans they both have scolex ( which is the head portion ) and they both have gravid proglottids ( which is similar units consisting of the body ) .scolex and gravid proglottids belong the order hence these are the characteristics shared by both  cyclophyllideans and pseudophyllideans

According to the endosymbiotic theory, which organelles were believed to be once simple prokaryotic cells?
A. Mitochondria and Endoplasmic Reticulum
B. Endoplasmic Reticulum and Chloroplast
C. Endoplasmic Reticulum and Ribosomes
D. Mitochondria and Chloroplast

Answers

D. Mitochondria and Chloroplast

i'm sorry if it's wrong but that should be the right answer

Which of the following is not a possible long-term consequence of two organisms occupying the same niche?

Answers

Answer: D. Coexistence

Explanation: Just took the quiz on edgenuity

Which of the following is a main difference when comparing an animal cell and a plant cell?




Plant cells lack cell walls and form fixed shapes.


Animal cells have chloroplasts and mitochondria.


Animal cells lack cell walls and are irregular in shape.


Plant cells have one vacuole, produce chloroplast, but do not have mitochondria.

Answers

Answer:

I think the answer is animal cells lack cell walls and irregular in shape animals do not have chloroplast because they do not manufacture their own food so chloroplast is only found in plants plants have cell walls

Answer:

its C

Explanation:

Question 10 of 10
Three servants were punished after they tried to escape. Two were white, and
one was black. The white servants had their contracts extended; the black
servant was ordered to serve for the rest of his life. Why were the
punishments different?
A. Because of the initial length of the servants contracts
B. Because of the servants' race
O C. Because of the servants different skills
D. All of the above
SUBMIT

Answers

I would say either A or B

4. If the lab technician mistakenly added glucose instead of lactose in the medium, how
would the results and your interpretation of the results differ?

Answers

the it should equilavalent to the length and tinted the rim of it

Parents and their offspring are usually very similar, but always slightly different. For example, certain moths can have offspring with either dark or light wings. Almost everything else about the moths is nearly identical, but the wing color and pattern may look very different. If the moths live in a forest with trees that have very dark bark, which newborn moth would have a survival advantage, the light winged moth or the dark winged moth? A) The dark winged moth, because its color will help it fly away from predators. B) The light winged moth, because its color will help it fly away from predators. C) The dark winged moth, because its color will help it blend with the environment. D) The light winged moth, because its color will help it blend with the environment.

Answers

Answer:

The answer is A.

Explanation:

Moth with dark wings under the tree with dark bark have a higher chance of surviving as its wings protect them from predator due to similar colour features.

Answer:The answer is C.

Explanation:If the bark is dark, then a dark winged moth will blend.

What happens to the Volume of gas when Thermal Energy changes?

Answers

Answer:

It increases.........

Answer: At high temperatures, the gas turns into a plasma

Explanation:

When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases.

Please help with my science questions

Answers

I can’t read it I’m sorry maybe if I could read it I could answer it

Which process makes it possible for all the major organs of the body to be formed by week 10 of human
development?
O growth
O fertilization
O self-renewal
O differentiation

Answers

Answer:

Differentiation

Explanation:

The process that makes it possible for all of the body's major organs to be formed by the tenth week of gestation is known as differentiation.

Differentiation because it is the process in which less specialized cells undergo maturation to become more distinct in form and function.

Question 4 of 25
Which of the following is the best hypothesis?
O A. Bananas taste better than apples or peaches.
O B. If a banana is grown in direct sunlight, it will
contain more potassium.
O C. Bananas are an ideal food to pack on a long hiking trip.
O D. What does a banana smell like?
SUBMIT

Answers

Answer:

b if a bananas is grow in direct sunlight it will contain more potassium

4. During which part of Interphase does the cell grow?

Answers

Answer:

during the interphase or G1 phase or G2

Explanation:

the cell spends most of there lives there until it makes duplicates

HURRY PLEASE
Which event is most likely to produce air pollution that would be harmful to human health?
1. the spread of a forest fire to several thousand acres
2. steam rising from a grate in a sidewalk
3. the release of steam generated at a nuclear power plant
4. water evaporating from the surface of a swimming pool

Answers

Answer:

Number 1

Explanation:

The smoke from the fire will go everywhere and shortly but surely cause air pollution. hope this helped

Answer:

The spread of a forest fire because it would kill the trees that are producing a mass amount of oxygen for us to use. The Amazon rainforest for example makes up  a whole 30% of Earth's entire oxygen supply.

Explanation:

Please Help!!
In cells, the production of proteins is handled by the ribosomes and endoplasmic reticulum, while the processing and packaging of proteins is handled by the _________ body.
A) Golgi
B) nuclear
C) plastid
D) cytoplasmic

Answers

Answer:

d cytoplasmic

d cytoplasmic

Where on the thoracic surface do you auscultate to the tricuspid, mitral (bicuspid), pulmonary, and aortic valves?

Answers

Answer:

Intercostal space

Explanation:

The intercostal space of the thoracic surface is the area where there is auscultation to the tricuspid, mitral (bicuspid), pulmonary, and aortic valves.

The tricuspid is found in the fourth intercostal space, mitral (bicuspid) is found in the fifth intercostal space, pulmonary and aortic is found in the second intercostal space.

___ is the type of active transport that moves large molecules into the cell​

Answers

the answer is: endocytosis :)
The answer is Endocytosis.

What are bio molecules?

Answers

Answer:

a molecule that is produced by a living organism.

Explanation:

hope this helps

please mark me brainliest

In a nuclear reaction, the fuel pellets are split using what ? This also causes a chain reaction

Answers

Answer:

A nuclear reactor is driven by the splitting of atoms, a process called fission, where a particle (a 'neutron') is fired at an atom, which then fissions into two smaller atoms and some additional neutrons. ... Two examples of nuclear fissioning of uranium-235, the most commonly used fuel in nuclear reactors.

Explanation:

4. Which process releases more ATP?

a. Photosynthesis

b. Aerobic respiration

c. Anaerobic respiration

d. fermentation

Answers

Answer:

B.aerobic respiration releases more adenosine triphosphate than anaerobic respiration

What statements accurately describe matter? Check all that apply

Answers

The answer fam is........ Matter is made up of atoms, atoms cannot be divided If you have those answers then it's them my guy..

Answer:

matter is anything and everything. matter is what takes up space or anything has any amount of volume in it.

Explanation:

example of matter would be anything from a microscopic cell, to your pencil, to the ocean, etc. anything that takes up any amount of space.

Complete the following table that lists the effects of changes in membrane permeability and extracellular concentration for different ions: You should be able to predict the effect that each condition will have on the resting membrane potential. The membrane potential might be expected to depolarize (D), hyperpolarize (H) or not change (NC).IONS Chargepermeability (resting) Increase membrane permeability Increase extracellular concentrationsodium potassium chloride calcium

Answers

Trippie Redd the god for life

1. Each person's DNA contains certain genes that code for specific traits. List at least 15 traits that make up your body's appearance. Your traits are things like eye color, arm length, or foot size

Answers

Freckles, hair color, complexation, hair line, dimples, ect.

Answer/Explanation:

HeightHair colorEar lobe shapeSkin colourHair line (widow's peak)Eye shapeHair textureDimplesCleft chin (butt chin)FrecklesNose shapeLength of second toeTeeth gapsBent vs straight pinkyPosition of eyebrows

Variation in DNA alters the sequence of genes that control many physical traits. Above are examples of traits where some of the genes controlling the traits are known

Other Questions
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