Question 1

Which cellular structure is the primary location for DNA storage in a eukaryotic cell?

Accepted Answer

Nucleus

Question 2

Where in a eukaryotic cell would you expect to find the majority of lipids?

Accepted Answer

Cell membrane

Question 3

Which of the following best describes the function of ribosomes in a cell?

Accepted Answer

Protein synthesis

Question 4

Which of the following is NOT a property of prokaryotic cells?

Accepted Answer

Presence of membrane-bound organelles

Question 5

Which of the following best explains why atoms form chemical bonds?

Accepted Answer

To achieve a full valence shell and become more stable

Question 6

How many valence electrons does a carbon atom have?

Accepted Answer

$$4$$

Question 7

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

Accepted Answer

Covalent bond

Question 8

What is the difference in electronegativity between hydrogen ($$2.1) $$and chlorine ($$3.0) in $$HCl, and what type of bond does this produce?

Accepted Answer

Difference $$= 0.9$$, polar covalent bond

Question 9

Which of the following best describes a non-polar covalent bond?

Accepted Answer

Electrons are shared equally between atoms

Question 10

Which of the following elements is most abundant in living cells?

Accepted Answer

Oxygen (O)

Question 11

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

Accepted Answer

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

Question 12

Which of the following statements about the atomic nucleus is correct?

Accepted Answer

It contains protons and neutrons

Question 13

Which of the following best describes the 'octet rule' in chemistry?

Accepted Answer

Atoms are most stable with 8 electrons in their outermost shell

Question 14

Which of the following is a property of polar covalent bonds?

Accepted Answer

Electrons are shared unequally, creating partial charges

Question 15

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

Accepted Answer

Loss of electrons

Question 16

Which of the following organelles is responsible for energy production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 17

Which of the following best explains why water is a polar molecule?

Accepted Answer

Oxygen is more electronegative than hydrogen, causing unequal sharing of electrons

Question 18

Which of the following is a correct statement about the relationship between atomic number and the number of protons in an atom?

Accepted Answer

Atomic number equals the number of protons

Question 19

Which of the following best describes the role of electronegativity in chemical bonding?

Accepted Answer

It determines how strongly an atom attracts shared electrons

Question 20

Which of the following is a real-life example of a molecule with a non-polar covalent bond?

Accepted Answer

Oxygen gas ($$\mathrm{O_2$})$$

Cellular Components and Biomolecules Study Guide

스터디 가이드 - 연습 문제