Side-chain hydrogen bonding :__________
a) Side chains that can form hydrogen bonds are located on the outside of a protein, where they can stabilize tertiary structure by forming hydrogen bonds with water.
b) Two cysteine residues can form hydrogen bonds.
c) Side chains connect distant parts of a polypeptide chain and introduce loops into the chain.
d) Threonine and glutamine can form hydrogen bonds.
e) Hydrogen bonds stabilize quaternary protein structure by holding together several protein strands.

Answers

Answer 1

Answer:

a) Side chains that can form hydrogen bonds are located on the outside of a protein, where they can stabilize tertiary structure by forming hydrogen bonds with water.

Explanation:

A hydrogen bond occurs between a hydrogen atom and four other elements. The side chain hydrogen bonds are resulted from the tertiary arrangement of structural components of the proteins.

The side chain hydrogen bond are present at the outside of the protein at places where the water forming the hydrogen bond can stabilize the tertiary structure.

Related Questions

Differentiate between exponential and logistic growth models

Answers

Population growth is considered as the increase in the total number of individual present in a population. Exponential and logistic growth are the two types of population growth.

The following are the differences between the two types of population growth:

1. Exponential growth makes a J-shaped curve. Logistic growth makes tha S-shaped curve.

2. Exponential growth takes place when the supply is plentiful. Logistic growth takes place when it is limited.

3. Exponential growth is considered as in proportion to the size of the population. Logistic growth is affected by the birth and death rate.

4. Exponential growth is described as a population that is expanding rapidly and is not affected by upper limit. Logistic growth is the rate of growth that is sustainable and has an upper limit of growth.

5. Exponential growth may lead to explosion of population. Logistic growth maintains a logical equillibrium of birth and death rate.

Viruses that infect animals tend to be enveloped viruses. Identify the answer choice that best describes the structure of these
viruses
O a nucleic acid genome surrounded by an outer protein coat called a capsid
O a capsid core surrounded by a lipid membrane with nucleic acid genome spikes
O a nucleic acid genome surrounded by a capsid encased in a lipid membrane
a nucleic acid genome surrounded by a lipid membrane inside a capsid

Answers

The structure of these viruses a nucleic acid genome surrounded by a capsid encased in a lipid membrane.

What is viruses?

A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea. Most viruses have a simple structure consisting of genetic material, a protein coat and, in some cases, an envelope of lipids. They are typically between 20 and 300 nanometers in size, although some are much larger. Viruses are not considered to be living organisms because they lack the key characteristics of life, such as a metabolism and the ability to reproduce on their own. Instead, they rely on the host to provide the necessary materials for replication.

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How does the medulla respond when the body's blood pH is too high?
A. It sends signals to the blood vessels to dilate.
B. It sends signals to the skeletal muscles to increase their activity.
C. It sends signals to the stomach to digest more food.
D. It sends signals to the lungs to decrease the breathing rate.

Answers

D because decreased O2 builds up carbon dioxide and lowers pH

Which statement best descibes a cause and effects that occurs during the process of muscle contration?

Answers

The most appropriate statement that is explaining the effect and cause during muscle contraction is. “The release of calcium ions causes myosin and actin to attach to each other.” The activation of muscles helps in the generation of muscles that send out the signals to the neurons.

Describe human use of landfills and the importance of landfill design

Answers

Human use of landfills: Landfills can safely handle non-hazardous municipal solid waste, constriction and demolition waste, land clearing debris, some industrial wastes, coal ash, sewage sludge, treated medical wastes, solidified liquid wastes and tenorm (Technologically Enhanced Naturally Occurring Radioactive Material—fracking waste)

The importance of landfill design: Modern landfills are well-engineered and managed facilities for the disposal of solid waste. Landfills are located, designed, operated and monitored to ensure compliance with federal regulations. They are also designed to protect the environment from contaminants, which may be present in the waste stream.

15. Tribes of people living in high altitudes have a greater exposure to UV light than those at lower elevations.
What skin type would you expect them to have? What evidence or reasoning can you provide for this
answer? (answer on back)

Answers

Darkish-skinned humans, consisting of Blacks, Hispanics, Asians, and native individuals, clearly produce extra of a chemical known as melanin, which offers the pores and skin shade and absorbs the sun's detrimental UV rays.

Excessive Altitude locations have greater exposure to UV than low altitude because they may be farther far from the sun. UV intensity increases with altitude due to the fact there may be much less environment to take in the harmful rays. Cloud cowl reduces UV degrees, however not absolutely.

Darker skin offers protection from the damaging effects of UV radiation, specifically on DNA and the precious nutrient folate. as a result, human beings with dark pores and skin in these high-UV environments would have had an advantage in survival and replica.

The outer layer of the skin has cells that incorporate the pigment melanin. Melanin protects pores and skin from the sun's UV rays. those can burn the skin and decrease its elasticity, main to untimely ageing. people tan due to the fact sunlight reasons the pores and skin to provide more melanin and darken.

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An organism that uses gynogenesis:
produces fertilized eggs, but keeps them in the female until they hatch.
lays fertilized eggs.
does not produce fertilized eggs, but supplies nutrition to growing embryo in the female.
produces diploid eggs without fertilization.
produces diploid eggs in response to presence of, but not fertilization by, sperm.

Answers

An organism that uses gynogenesis is one that D. produces diploid eggs without fertilization.

Gynogenesis is a reproductive strategy in which the female organism's eggs are activated by the presence of sperm, but fertilization does not occur. Instead, the sperm triggers the development of the eggs, but the resulting embryos are clones of the mother. The genetic material of the offspring is derived solely from the female parent.

The key distinction between gynogenesis and other reproductive strategies is that gynogenetic organisms do not require fertilization to initiate embryo development. However, some gynogenetic species still need the presence of sperm to stimulate the activation of the eggs. This phenomenon is known as sperm-dependent parthenogenesis.

By using gynogenesis, organisms can reproduce without the need for a male's genetic contribution. This reproductive strategy allows for rapid population growth and the maintenance of favorable genetic traits within a population. However, it also means that the genetic diversity of offspring is limited since they are genetically identical to the mother. This lack of genetic diversity can be both advantageous and disadvantageous depending on the environmental conditions and selective pressures the organisms face. Therefore, Option D is correct.

The question was incomplete. find the full content below:

An organism that uses gynogenesis:

A. produces fertilized eggs, but keeps them in the female until they hatch.

B. lays fertilized eggs.

C. does not produce fertilized eggs, but supplies nutrition to growing embryo in the female.

D. produces diploid eggs without fertilization.

E. produces diploid eggs in response to presence of, but not fertilization by, sperm.

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Which statements correctly explain the distribution of water on Earth? Check all that apply.
O One-fourth of Earth's water is frozen water.
One-fourth of Earth's water is groundwater.
Salty water makes up 97% of Earth's water.
Fresh water makes up 3% the Earth's water.
The atmosphere contains 3% of Earth's water.
Lakes and rivers contain 97% of Earth's water.
(100 points)

Answers

Answer:Salty water makes of 97% of water

Explanation:

if you think about it the ocean is the biggest water source and its basically all salt.

Question 1) Discuss how compounds in different types of organisms can be used to benefit people? ( Will Mark Brainliest).

Answers

Compounds from different organisms are being used widely bu humans for their benefits. Some of the compounds are used as drugs. For example, penicillin is used as a drug or antibiotic. There are many plants which provides humans with other types of medicines and herbal remedies. There are other compounds which are used for cancer treatment. For example, taxol is a compound obtained from trees which are being used as anticancer drugs.

If typhoon is located at 10°N, 110°E , is it within the PAR? Why??
-ANSWER ASAP-

Answers

Answer:

PAR is an acronym word for the Philippine Area of Responsibility.Philippine Area of Responsibility lies in 25 degrees north to 120 degrees east, 25 degrees north to 135 degrees east, 5 degrees north to 115 degrees east, 15 degrees north to 115 degrees east, and 21 degrees north to 120 degrees east.If a typhoon is at 19 degrees N and 117 degrees E. THE TYPHOON IS NOT IN A PAR.

Explanation:

Hope it helps!

If not, im sorry i couldn't help :(

No, if a typhoon is located at 10°N, 110°E, it is not within PAAR.

What is PAR?

PAR is an acronym for the Philippines area of responsibility.

It is an area in the northwestern pacific.

Here an agency called PAGASA monitors the weather.

They check mainly typhoons and cyclones in the region that comes under it.

Thus, If a typhoon is located at 10°N, 110°E. It is not coming within PAR.

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5. A cup of cocoa is at 80 °F (26.7 °C). Explain how this cup of cocoa can feel hot in one person’s hands but cold in another person’s hands.

6. Why can’t the temperature of an object alone indicate whether a person will experience it as hot or cold? What other information do you need?

7. Provide evidence that energy tends to disperse (spread out).

Answers

5) The temperature that the body of the person has also determines how the cup would feel in the person's hands

6) We have to also know the temperature of the environment.

7) The fact that radiation spreads out confirms that energy spreads out.

Why is it not hot in everyone's hands?

We know that temperature has to do with movement of the particles that we have in a system. We define the temperature as a measure of the average kinetic energy of the molecules that are found in a body.

5) The cup that is 80 °F (26.7 °C) in temperature may feel hot in the hands of a person whose body temperature is less than this value. This is because heat is transferred from the cup to the body of the person.

6) Temperature alone can not be able to tell us whether a person will experience it as hot or cold. This is because, the temperature of the surrounding is also a very important factor in this case.

7) Let us take for instance when there is a fire source and the heat is seen to move out of its initial source and spreads out. This provides the evidence that energy tends to spread out.

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Where are the A, B and RH antigens located

Answers

Answer: The A, B, and Rh antigens are located on the surface of red blood cells.

Explanation:

In respiratory system, most of the dirt/ microbes in the air are trapped by

Answers

Answer:

Cilia propel a liquid layer of mucus that covers the airways. The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.

how do Euglena reproduce?

Answers

Euglena reproduce asexually, by longitudinal cell division; they are not know to reproduce sexually. Several species produce resting cysts that can withstand drying. Euglena live in fresh and brackish water habitats rich in organic matter.

Scientist discovered a new
organism in the ocean. What
tool will they use to view the
cells, and will it look the same
as another animal from the
ocean?

Answers

Light microscopy with the help of microscope will be used to view cells. It will not look the same as another animal from the ocean due to Bioluminescence.

What is the purpose of light microscopy?

By presenting a magnified image of how minute structures and samples interact with visible light, such as their absorption, reflection, and scattering, light microscopy is used to make them visible.

Light microscopes are employed for routine use when low magnification and resolution are sufficient as well as for the study of living cells. Higher magnifications and higher quality images are available with electron microscopes, but they cannot be utilized to see living cells. An introduction to the basic ideas behind light microscopy: enhancing contrast, resolution, and magnification.

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How is structure of DNA adapted to its function

Answers

Answer:

Deoxyribonucleic acid is the macromolecule carries the genetic information. It has two phosphate sugar back bone chains which are joined together with the help of nucleotides (A, T, G, and C). This set of nucleotide refers as gene. These genes define the primary function of DNA to carry genetic information. This DNA structure gets coiled in manner that can carry large amount of information. These nucleotide sequences have ability to get transcribed into protein molecule with the help of translation and transcription factors.

One strand of sequence is sufficient to maintain coding sequence. The pair wise structure helps in case of one strand of structure get damaged and it required in process of replication.

Base stacking provides the stability in the structure of the DNA. The corresponding nucleotides combine with other molecule and minimize the hydrophobic effect. This molecule combines in the perpendicular alignment to the DNA base line.

It often found that TATA box on 5’ end. It is found that on 5’ because process starts from 5’ end and TATA box have A, T nucleotide. These molecules have double hydrogen bond, which is weaker then G, C pair.

Explanation:

The structure of DNA adapted to its function - DNA contains the instructions needed for an organism to develop, survive and reproduce.

DNA sequencesDNA has nucleotide made up of pentose sugar and phosphate backbone, and nitrogenous bases in a particular sequence.The sequence converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodiesDNA winds into a double helix, with hydrogen bonding between the bases of each strand like the rungs of a ladder.The order of nucleotides in a gene dictate the amino acid sequence of the proteinDNA acts to store information while proteins are the effector molecules.

Thus, The structure of DNA adapted to its function - DNA contains the instructions needed for an organism to develop, survive and reproduce.

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Which carbohydrate can be used by the body as an immediate source of energy?
O glucose
O cellulose
O chitin
O glycogen

Answers

Answer:

[A]- Glucose

Explanation:

State one substance that leaves the blood as it flows through the tissues of the small intestine.

Answers

Answer:

Superior mesenteric artery.

The primary source of energy for the body is a form of sugar called glucose. It travels to cells all throughout the body after being absorbed into circulation from the small intestine.

Other chemicals that enter the circulation through the small intestine include the following:

Proteins' building components are amino acids.

The lipids' building components are fatty acids.

minerals and vitamins

Water

In an adult, the small intestine is a muscular tube that is roughly 20 feet long. It is situated in the belly, above the large intestine, and below the stomach. The bulk of digestion and nutritional absorption from meals occurs in the small intestine.

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How are matter and energy transformed during photosynthesis? Be sure to address carbon and chemical energy in your answer.

Answers

The process of photosynthesis converts light energy into stored chemical energy by converting carbon dioxide plus water into sugars plus released oxygen.

The glucose synthesised in photosynthesis is transferred to different animals and used by them to produce energy such as ATP. This explains the transfer of matter and energy during the photosynthesis process.

What is the photosynthetic reaction?

Glucose and oxygen are the results of photosynthesis, which is carried out by green plants. Green plants and aquatic phytoplankton are the producers of the ecosystem.

The carbon dioxide and water are taken up by green plants, and the food (glucose) is synthesized. This food is the matter that is used for several cellular reactions to produce energy, which is ATP. Most of the ATP is produced by mitochondria via the Krebs cycle and electron transport chain.

The plant breaks down the water with the help of sunlight at Photosystem II (PSII), and an electron is released. The flow of electrons is helpful for proton gradient formation and ATP generation. The carbon dioxide that plants absorb is reduced or fixed at the stroma to produce glucose. This glucose is used by animals and plants themselves to produce energy.

Hence, glucose is transferred to animals, and ATP is produced as a result. It is chemical energy.

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An amino acid's unique characteristics is defined by the ________.

Answers

an amino acids unique characteristics is defined by the R-group

answer if you can please 40 points

Answers

Answer:

i think the answer is option d

20. Which statement correctly categorizes hog operations?

O A. Feeder operations raise hogs throughout their lifetime, farrow-to-finish operations raise young hogs, and finisher operations raise older hogs

O B. Feeder operations raise hogs throughout their lifetime, finisher operations raise young hogs, and farrow-to-finish operations raise older hogs

O C. Finisher operations raise hogs throughout their lifetime, feeder operations raise young hogs, and farrow-to-finish operations raise older hogs.

O D. Farrow-to-finish operations raise hogs throughout their lifetime, feeder operations raise young hogs, and finisher operations raise older hogs

Answers

Answer:

D. Farrow-to-finish operations raise hogs throughout their lifetime, feeder operations raise young hogs, and finisher operations raise older hogs

Explanation:

Hog farms operate in three different categories:

Farrow-to-finish: This involves breeding sows to produce offspring. The offspring's are then fed until they are have reached the size for slaughter. The entire process takes throughout the hogs lifetime.

Feeder operations: This involves breeding sows and then selling their piglets to other farmers who will then raise them for till they are matured for slaughters. This process is just to raise young hogs.

Finisher operations: This involves buying piglets from other farmers and then raising them until they are matured for slaughter. This finisher operations raise older hogs

1.What is the different between pulmonary circulation and systematic circulation
2. What is the different between aerobic andanaerobic respiration?
3. What is the important of ATP?
4. Write the group blood lack of atigen and antibody respectively?
5. Why the left ventricles thicker than right ventricles?
6. What is the different between disinfectants and antiseptics?
7. Write the life cycle of tape worm?
8. What are the main differences between cholera and typhoid?
9. Write the reason for need classification.
10. Write the genus name and species name of Homosapiens respectively

Answers

1. We can see here that the difference between pulmonary circulation and systematic circulation:

Pulmonary circulation is the circulation of blood from the heart to the lungs and back to the heart. While systemic circulation is the circulation of blood from the heart to the rest of the body and back to the heart.

What is aerobic and anaerobic respiration?

2. Aerobic respiration is a type of respiration that requires oxygen. While anaerobic respiration is a type of respiration that does not require oxygen.

3. The importance of ATP is that it is used to power all of the body's cells, including muscle cells, brain cells, and heart cells.

4. The group blood lack of atigen and antibody:

Blood group Antibodies Antigens

A Anti-B A

B Anti-A B

AB None A and B

5. The left ventricle is thicker than the right ventricle because it has to pump blood to a larger area of the body.

6. The difference between disinfectants and antiseptics is that:

Disinfectants kill microorganisms on surfaces, while antiseptics kill microorganisms on living tissue.

7. The life cycle of a tapeworm begins when an infected animal sheds tapeworm eggs in its feces. If a human ingests these eggs, they hatch in the small intestine and the larvae burrow through the intestinal wall and travel to the liver, lungs, or brain. In these organs, the larvae mature into adult tapeworms.

8. The main differences between cholera and typhoid are:

Cholera is caused by the bacterium Vibrio cholerae, while typhoid is caused by the bacterium Salmonella typhi. Cholera is spread through contaminated water, while typhoid is spread through contaminated food or water. Cholera symptoms typically develop within hours of infection, while typhoid symptoms typically develop within days of infection.

9. The genus name for H0mo sapiens is H0mo and the species name is sapiens.

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me walking in to the school when i know im dress code

Answers

Answer:

With da drip

Explanation:

Answer: lol

Explanation:

Which correctly lists three planets that have rings?
O Jupiter, Mars, Saturn
O Mars, Jupiter, Mercury
Mercury, Mars, Venus
O Neptune, Uranus, Jupiter

Answers

The minor Deimos Ring, as mentioned earlier, but it is not comparable to the extensive ring systems of Saturn or Jupiter Mercury does not have any known rings the correct combination is "Jupiter, Mars, Saturn" when referring to planets that have rings.

Out of the four options provided, the only combination that consists of three planets with rings is "Jupiter, Mars, Saturn."

Jupiter: Jupiter is the largest planet in our solar system and is well-known for its impressive ring system.

Although not as prominent as Saturn's rings, Jupiter's rings are made up of fine dust particles and are relatively faint compared to those of Saturn.

Mars: Mars is the fourth planet from the Sun and is often referred to as the "Red Planet."

While it doesn't possess a large, visible ring system like Saturn or Jupiter, it does have a thin dust ring called the Deimos Ring.

This ring is composed of dust particles kicked up by the Martian moon Deimos as it orbits the planet.

Saturn: Saturn is renowned for its spectacular and prominent ring system. It is composed of countless icy particles ranging in size from micrometers to meters.

Saturn's rings are one of the most iconic features in our solar system and are visible even from small telescopes.

The other options listed do not accurately represent planets with ring systems:

Mars, Jupiter, Mercury: While Jupiter is included, neither Mars nor Mercury have prominent ring systems.

Mars has the minor Deimos Ring, as mentioned earlier, but it is not comparable to the extensive ring systems of Saturn or Jupiter. Mercury does not have any known rings.

Mercury, Mars, Venus: None of these three planets have significant ring systems.

Mercury and Venus do not possess any rings, and Mars has only the minor Deimos Ring.

Neptune, Uranus, Jupiter: Neptune and Uranus both have ring systems, but Jupiter does not.

Therefore, this option does not accurately list three planets with ring systems.

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Out of the four options provided, the only combination that consists of three planets with rings is "Jupiter, Mars, Saturn."

Jupiter: Jupiter is the largest planet in our solar system and is well-known for its impressive ring system.

Although not as prominent as Saturn's rings, Jupiter's rings are made up of fine dust particles and are relatively faint compared to those of Saturn.

Mars: Mars is the fourth planet from the Sun and is often referred to as the "Red Planet."

While it doesn't possess a large, visible ring system like Saturn or Jupiter, it does have a thin dust ring called the Deimos Ring.

This ring is composed of dust particles kicked up by the Martian moon Deimos as it orbits the planet.

Saturn: Saturn is renowned for its spectacular and prominent ring system. It is composed of countless icy particles ranging in size from micrometers to meters.