Question 1

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

Question 2

Which property of water allows ice to float on liquid water, and why is this biologically significant?

Accepted Answer

Water's expansion upon freezing; ice is less dense than liquid water due to hydrogen bonding.

Question 3

A solution with a pH of 9 is how many times more basic than a solution with a pH of 4?

Accepted Answer

$$10^5$$

Question 4

Which element is NOT one of the six most common elements found in biological molecules?

Accepted Answer

Calcium (Ca)

Question 5

Which of the following is a correct statement about acids and bases?

Accepted Answer

Each pH unit represents a 10-fold difference in $$H^+$$ concentration.

Question 6

Which type of chemical bond is responsible for water's high specific heat and cohesion?

Accepted Answer

Hydrogen bond

Question 7

Glucose is classified as which type of biological molecule?

Accepted Answer

Monosaccharide

Question 8

Which process allows water to move from the roots to the leaves in plants, defying gravity?

Accepted Answer

Cohesion and adhesion

Question 9

Which of the following is NOT a unifying theme of biology?

Accepted Answer

Gravity

Question 10

A student sets up an experiment to test plant growth under different light conditions. What is the independent variable in this experiment?

Accepted Answer

Amount of sunlight

Question 11

Which transport process requires energy and can move substances against their concentration gradient?

Accepted Answer

Active transport

Question 12

Which of the following statements about the universal genetic code is correct?

Accepted Answer

It is shared by almost all living organisms.

Question 13

Which of the following is NOT a property of water that is important for life?

Accepted Answer

Low boiling point

Question 14

Which large biological molecule contains genetic information?

Accepted Answer

Nucleic acid

Question 15

Which of the following is a correct description of a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between atoms

Question 16

Which element has 6 protons, 6 neutrons, and 6 electrons?

Accepted Answer

Carbon

Question 17

Which of the following is an example of passive transport?

Accepted Answer

Facilitated diffusion

Question 18

Which of the following best explains why water is a versatile solvent?

Accepted Answer

Water molecules are polar and can form hydrogen bonds with many substances.

Question 19

Which of the following is a correct statement about the relationship between pH and hydrogen ion concentration?

Accepted Answer

As pH decreases, hydrogen ion concentration increases.

Question 20

Which of the following is NOT a function of proteins in living organisms?

Accepted Answer

Storing genetic information

Foundations of General Biology: Organization, Chemistry, and Biological Molecules

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