Which of the following is a characteristic of proteins? A)           Some may enhance the rate of specific chemical reactions.
                B)            They may form either long, thin fibrous molecules or compact, rounded globular molecules.
                C)            They store genetic information for cellular metabolism.
                D)           They form through hydrolysis reactions.
                E)            a and b

Answers

Answer 1

Answer: E. Both A and B.

Enzymes, which can catalyze chemical reactions, are a type of protein. Moreover, proteins can either be fibrous and insoluble in water like actin and myacin, or globular and soluble like hemoglobin. DNA, which stores the genetic information, is not made of proteins. Lastly, proteins are made through the translation of mRNA at the ribosomes.

I hope this helps!

Answer 2

Answer:

Final answer:

Correct answer is Option E, which includes options A and B. Proteins can enhance specific chemical reactions as enzymes and can form diverse structures. Proteins do not store genetic information and do not form through hydrolysis reactions.

Explanation:

The correct answer to this question is Option E, which are options A and B. Proteins do indeed have the ability to enhance the rate of specific chemical reactions. These are known as enzymes. Another characteristic of proteins is their diverse structure, as mentioned in option B. They can form long, thin fibrous molecules like collagen or compact, rounded globular molecules like hemoglobin. However, they do not store genetic information (that is the function of DNA and RNA), nor do they form via hydrolysis reactions. Proteins are synthesized through a process called dehydration synthesis, not hydrolysis.

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Answers

Hey there!

Answer: Protons

The atom in a sample of an element must contain nuclei with the same number of protons. If the protons change in number, then the element will modify as well.

Thank you!

Which pair of compounds will form a buffer in aqueous solution?

Answers

Buffer solutions consist of an aqueous solution of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer solutions are used to have better control of the pH of solutions.

An example of a weak acid and its conjugate base is acetic acid (CH3COOH) and sodium acetate (CH3COONa).

In an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot.Which of the following type of reaction has occurred?A) endothermic
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Answers

B) Exothermic
The reaction released heat energy to its surrounding, thus, it was exothermic.
"exo" is to expel or put outside
"thermic" means heat

Answer: B) exothermic

Explanation:

Endothermic: The chemical reactions in which reactants form products by absorption of energy are called as endothermic reactions.

Exothermic : The chemical reactions in which reactants form products along with release of energy are called as exothermic reactions. Thus if walls turn hot that means the energy has been released.

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Answers

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PCl5

Answer:

PCI5

Explanation:

How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:C + H2O CO + H2
1) Is this equation balanced?
2) What is the starting substance?
3) What is the ending substance that is asked for in the problem?
Additional info: The atomic mass of C is 12.01 g/mole. The atomic mass of H2 is 2.016 g/mole.

Answers

1) The equation is already balanced;

Left side: 1C, 2H and 1O
Right side: 1C, 1O, 2H

2) Starting substances: water and carbon
There are two starting substances also called reactants. H2O which is a compound and C which is an element.

3) Ending substance asked for: H2.

This is hydrogen gas.

Stoichiometry:

1 mol of C produces 1 mol of H2

12.01 g of C productes 2.016 grams of H2

Ratio: 2.016 g of H2 / 12.01 g of C = X g of H2 / 34 g of C =>

x = 34 g of C* 2.016 g of H2 / 12.01 g of C= 5.707 g of H2

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Eliminate
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D) silt.

Answers

Option B. Humus. Its dark color is due to the high content of carbon.

Answer:

Answer is Humus

Explanation:

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