Question 1

How many hydrogen bonds can a single water molecule form simultaneously?

Accepted Answer

Four

Question 2

In the crystalline lattice of ice, how many hydrogen bonds does each water molecule form?

Accepted Answer

Four

Question 3

Identify the correct sequence of chemical bond strength from strongest to weakest.

Accepted Answer

Ionic \u003e Covalent \u003e Hydrogen \u003e Van der Waals

Question 4

Which of the following represents the N-15 isotope of nitrogen?

Accepted Answer

$$7p^+, 9n^0$, 7e^-$$

Question 5

Which of the following demonstrates the property of cohesion?

Accepted Answer

Capillary action in plants

Question 6

Which of the following mixtures allows water molecules to form a hydration shell?

Accepted Answer

Salt and water

Question 7

Low pH is equivalent to a ___ concentration of protons and high pH means ___ concentration of protons.

Accepted Answer

high; low

Question 8

___ is required for the synthesis of thyroxine, whereas ___ is required for the synthesis of hemoglobin.

Accepted Answer

Iodine; iron

Question 9

Identify the correct physiological function(s) of water in the body.

Accepted Answer

All of the above

Question 10

A covalent bond is formed by _____ of electrons between atoms.

Accepted Answer

sharing

Question 11

Which of the following statements about anions is false?

Accepted Answer

They have more protons than electrons

Question 12

What type of monomer makes up a nucleic acid?

Accepted Answer

nucleotide

Question 13

Which of the following is NOT metabolized to generate energy in the human body?

Accepted Answer

Vitamins

Question 14

_____ fatty acids have single carbon-carbon bonds in their hydrocarbon backbones, whereas _____ fatty acids have double carbon-carbon bonds.

Accepted Answer

Saturated; unsaturated

Question 15

Identify the incorrect statement about protein structure.

Accepted Answer

The subunits of a quaternary structure are held together by ionic bonds.

Question 16

Identify which of the following molecules is a polysaccharide.

Accepted Answer

All of the above

Question 17

The principal protein component of thick myofilaments is ___ and the principal protein component of thin myofilaments is ___.

Accepted Answer

myosin; actin

Question 18

In all cells, the cytoplasm is surrounded by the _____, whereas the _____ is found outside the plasma membrane of a plant cell.

Accepted Answer

plasma membrane; cell wall

Question 19

Which of the following is found in plant cells but not animal cells?

Accepted Answer

Chloroplast

Question 20

A patient is diagnosed with goiter, a condition often caused by a deficiency of a mineral required for hormone synthesis. Which hormone's synthesis is most directly affected, and which mineral is deficient?

Accepted Answer

Thyroxine; iodine

General Biology: Fundamental Concepts and Molecular Foundations

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