Question 1

Which organelle is primarily responsible for the production of ATP in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 2

Where in a eukaryotic cell would you expect to find most of the cell's DNA?

Accepted Answer

Nucleus

Question 3

Which of the following best describes the chemical composition of an all-natural egg?

Accepted Answer

It contains amino acids, fatty acids, sugars, and water.

Question 4

Which of the following statements about atomic structure is correct?

Accepted Answer

Neutrons are found in the nucleus and have no electric charge.

Question 5

What is the atomic number of an element defined by?

Accepted Answer

The number of protons

Question 6

Which of the following elements is most abundant in the human body by mass?

Accepted Answer

Oxygen

Question 7

How many covalent bonds can a carbon atom typically form?

Accepted Answer

$$4$$

Question 8

Which type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Question 9

A sodium atom ($$Na) $$reacts with a chlorine atom ($$Cl) to $$form sodium chloride ($$NaCl). $$What type of bond is formed?

Accepted Answer

Ionic bond

Question 10

Which of the following best explains why oxygen is highly electronegative?

Accepted Answer

It has a high number of protons attracting electrons.

Question 11

Which of the following molecules is non-polar?

Accepted Answer

$$O_2$$

Question 12

What is the main difference between polar and non-polar covalent bonds?

Accepted Answer

Polar bonds have unequal sharing of electrons, non-polar bonds have equal sharing.

Question 13

Which of the following best describes the process of oxidation in a redox reaction?

Accepted Answer

Loss of electrons

Question 14

If an atom has 7 electrons in its valence shell, what is its most likely behavior?

Accepted Answer

Accept an electron to complete its valence shell

Question 15

Which of the following is a property of water that results from its polar covalent bonds?

Accepted Answer

It can form hydrogen bonds with other molecules.

Question 16

Which of the following best describes the relationship between atomic number and the identity of an element?

Accepted Answer

The atomic number is unique to each element and equals the number of protons.

Question 17

Which of the following statements about the periodic table is correct?

Accepted Answer

Elements in the same group have the same number of valence electrons.

Question 18

A molecule of glucose has the formula $$C_6H_{12}O_6$. How many total atoms are in one molecule of glucose?

Accepted Answer

$$24 (6 C + 12 H + 6 O)$$

Question 19

Which of the following best explains why sodium (Na) and chlorine (Cl) form an ionic bond?

Accepted Answer

Sodium donates an electron to chlorine, resulting in oppositely charged ions.

Question 20

Which of the following is a trace element in the human body?

Accepted Answer

Iron

Atoms, Molecules, and Chemical Bonds in Biology

Study Guide - Practice Questions