Water,pH and Macromolecules MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Water,pH and Macromolecules, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Water,pH and Macromolecules MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Water,pH and Macromolecules mcq questions that explore various aspects of Water,pH and Macromolecules problems. Each MCQ is crafted to challenge your understanding of Water,pH and Macromolecules principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Water,pH and Macromolecules MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Water,pH and Macromolecules MCQs | Page 6 of 8

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Q51.
Which of the following statements about covalently bonded molecules is false?

a.

Electrons are shared between the atoms that make up the molecule

b.

Noncovalent bonds may also be present, especially if the molecule is large

c.

Such molecules often result from the interaction of ionized atoms

d.

The chemical bonds that hold the molecule together are relatively strong

Discuss
Answer: (c).Such molecules often result from the interaction of ionized atoms
Q52.
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

a.

DNA

b.

Strong base

c.

Phospholipid

d.

Protein

Discuss
Answer: (d).Protein
Q53.
The effectiveness or capacity of a buffer solution can be affected by

a.

molar concentration of the buffer components

b.

concentration of the conjugate base to the weak acid

c.

both (a) and (b)

d.

temperature of buffer components

Discuss
Answer: (c).both (a) and (b)
Q54.
Who discovered and described the blood groups (ABO) classification?

a.

Theodor Kocher

b.

Karl Landsteiner

c.

Otto Warburg

d.

Karl Hooper

Discuss
Answer: (b).Karl Landsteiner
Q55.
H₂O and CH₄ are both examples of

a.

molecules

b.

ions

c.

acids

d.

none of these

Discuss
Answer: (a).molecules
Q56.
Hydrogen bonds and hydrophilic interactions are types of

a.

weak chemical bonds that hold together the atoms within a molecule

b.

strong chemical bonds that hold together the atoms within a molecule

c.

weak chemical bonds that link together separate molecules

d.

strong chemical bonds that link together separate molecules

Discuss
Answer: (c).weak chemical bonds that link together separate molecules
Q57.
Which of the following organic groups are found in naturally occuring amino acids?

a.

Guanidinium ion

b.

Indole

c.

Imidazole

d.

All of these

Discuss
Answer: (d).All of these
Q58.
Polyprotic acids such as H₃PO₄, can act as acid-base buffers

a.

only in combination with polyprotic bases

b.

if their concentration is kept low

c.

at pH values around neutrality

d.

at pH values around any of their pKa's

Discuss
Answer: (d).at pH values around any of their pKa's
Q59.
The pH of a solution is determined by

a.

concentration of salt

b.

relative concentration of acids and bases

c.

dielectric constant of the medium

d.

environmental effect

Discuss
Answer: (b).relative concentration of acids and bases
Q60.
The reactions of molecules

a.

are the reactions of the functional groups

b.

are independent of the functional groups

c.

require an enzyme in all cases

d.

all of the above

Discuss
Answer: (a).are the reactions of the functional groups
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