Question 1

Which of the following best illustrates the theme of 'Energy and Matter' in biology?

Accepted Answer

A butterfly using nectar to fuel its flight muscles.

Question 2

A scientist discovers a new organism that is multicellular, has membrane-bound organelles, and performs photosynthesis. According to the classification system, to which domain does this organism most likely belong?

Accepted Answer

Eukarya

Question 3

Which property of water allows it to moderate Earth's climate by absorbing and releasing large amounts of heat with only slight changes in its own temperature?

Accepted Answer

High heat capacity

Question 4

Which of the following is an example of evolutionary adaptation?

Accepted Answer

A pygmy seahorse blending in with its coral environment over generations.

Question 5

Which functional group is present in all amino acids and acts as a base by accepting hydrogen ions?

Accepted Answer

Amino group

Question 6

A molecule of sodium chloride (NaCl) forms when a sodium atom transfers an electron to a chlorine atom. What type of bond holds NaCl together?

Accepted Answer

Ionic bond

Question 7

Which of the following correctly lists the levels of biological organization from smallest to largest?

Accepted Answer

Molecule, organelle, cell, tissue, organ, organism, population, community, ecosystem, biosphere

Question 8

Which property of water is most directly responsible for the movement of water from the roots to the leaves in plants?

Accepted Answer

Cohesion

Question 9

ATP is often called the 'energy currency' of the cell. Which part of the ATP molecule is responsible for its ability to store and release energy?

Accepted Answer

The triphosphate group

Question 10

Which of the following best explains why hydrocarbons are a good source of energy?

Accepted Answer

They contain many nonpolar covalent bonds that, when broken, release energy.

Question 11

A researcher is studying a molecule with the formula $$\mathrm{C}_2\mathrm{H}_6\mathrm{O}. $$She finds that it can form hydrogen bonds with water. Which functional group is most likely present in this molecule?

Accepted Answer

Hydroxyl group

Question 12

Which of the following scenarios best demonstrates the property of 'regulation' in living organisms?

Accepted Answer

A jackrabbit increasing blood flow to its ears to release heat.

Question 13

Which of the following is the correct scientific name for humans, using binomial nomenclature?

Accepted Answer

Homo sapiens

Question 14

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between atoms.

Question 15

A molecule with the formula $$\mathrm{CH}_3\mathrm{COOH} is $$found in vinegar. Which functional groups are present in this molecule?

Accepted Answer

Carboxyl and methyl groups

Question 16

Which of the following best explains why water is called the 'universal solvent'?

Accepted Answer

Its polarity allows it to dissolve many different substances.

Question 17

Which of the following is NOT a property of life?

Accepted Answer

Universal solvent

Question 18

A student is asked to identify the domain of a single-celled organism that lacks a nucleus and lives in extreme environments. Which domain should the student choose?

Accepted Answer

Archaea

Question 19

Which of the following best describes the role of functional groups in organic molecules?

Accepted Answer

They determine the chemical properties and reactivity of organic molecules.

Question 20

Which of the following best explains why carbon is the basis for biological molecules?

Accepted Answer

Carbon can form four covalent bonds, allowing for a variety of stable structures.

Introduction to Biology: Key Concepts and Chemical Foundations

Study Guide - Practice Questions

Study Guide - Flashcards