Question 1

Which of the following best describes the hierarchical organization of life from largest to smallest?

Accepted Answer

Biosphere → Ecosystem → Community → Population → Organism → Cell → Molecule

Question 2

Which property of water allows it to moderate Earth's climate by absorbing heat without a large increase in temperature?

Accepted Answer

High specific heat

Question 3

A scientist discovers a new molecule that is highly polar and forms hydrogen bonds with water. Which type of bond is primarily responsible for this molecule's solubility in water?

Accepted Answer

Hydrogen bonds

Question 4

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons.

Question 5

Given an atom with atomic number 8 and mass number 18, how many neutrons does it have? Use the formula $	ext{Number of neutrons} = 	ext{Mass number} - 	ext{Atomic number}$.

Accepted Answer

10

Question 6

Which of the following best explains why carbon is considered the most versatile atom in forming organic molecules?

Accepted Answer

Carbon can form up to four covalent bonds with other atoms.

Question 7

Which of the following is an example of a deductive reasoning process in biology?

Accepted Answer

Starting with a general principle and applying it to predict a specific outcome.

Question 8

Which of the following molecules is a disaccharide?

Accepted Answer

Sucrose

Question 9

A patient is diagnosed with anemia due to a mutation that changes the primary structure of hemoglobin. Which level of protein structure is directly affected by this mutation?

Accepted Answer

Primary structure

Question 10

Which of the following best describes the difference between saturated and unsaturated fats?

Accepted Answer

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.

Question 11

Which of the following is NOT a function of phospholipids in biological membranes?

Accepted Answer

Providing energy storage for the cell

Question 12

Which of the following statements about chemical bonds is correct?

Accepted Answer

Covalent bonds involve the sharing of electron pairs between atoms.

Question 13

Which of the following best explains why water is an excellent solvent for ionic compounds?

Accepted Answer

Water's polarity allows it to surround and separate positive and negative ions.

Question 14

Which of the following is a correct example of an isomer?

Accepted Answer

Glucose and fructose, both with the formula $\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$

Question 15

Which of the following best describes the role of valence electrons in chemical reactivity?

Accepted Answer

Valence electrons are responsible for the formation of chemical bonds.

Question 16

Which of the following is a correct statement about DNA and RNA?

Accepted Answer

DNA is usually double-stranded, while RNA is usually single-stranded.

Question 17

A molecule has the formula $\mathrm{C}_{12}\mathrm{H}_{22}\mathrm{O}_{11}$. What type of carbohydrate is this?

Accepted Answer

Disaccharide

Question 18

Which of the following is an example of an emergent property in biology?

Accepted Answer

The coordinated contraction of heart muscle cells resulting in a heartbeat

Question 19

Which of the following best explains why ionic bonds tend to dissociate in water?

Accepted Answer

Water's polarity disrupts the electrostatic attraction between ions.

Question 20

A scientist is studying the effect of temperature on enzyme activity. Which step of the scientific process is she performing when she collects data from her experiments?

Accepted Answer

Making observations

General Biology Study Guide: Chapters 1-3

Study Guide - Practice Questions

Study Guide - Flashcards