$$[H^+] = 1 \times 10$$^{-4}$$ M

Question 1

Which of the following statements about the hierarchical organization of life is correct?

Accepted Answer

Organisms are composed of organ systems, which are made up of organs, tissues, and cells.

Question 2

Which property of water allows ice to float on liquid water, and why is this important for aquatic life in cold climates?

Accepted Answer

Water is less dense as a solid than as a liquid, allowing ice to float and insulate the water below.

Question 3

A scientist wants to test the effect of a new fertilizer on plant growth. Which of the following is the best example of a controlled experiment?

Accepted Answer

Planting seeds in two identical pots, giving one fertilizer and the other none, and measuring growth over time.

Question 4

Which of the following is NOT a function of the plasma membrane in cells?

Accepted Answer

Synthesizing proteins for the cell.

Question 5

Which statement about enzymes is true?

Accepted Answer

Enzymes lower the activation energy required for a reaction.

Question 6

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 7

Which organelle is responsible for producing ATP in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 8

A solution has a pH of 4. What is the concentration of hydrogen ions $$[H^+] in $$this solution?

Accepted Answer

$$[H^+] = 1 	imes 10$$^{-4}$$ M

Question 9

Which of the following statements about the structure of DNA is correct?

Accepted Answer

DNA is a double helix composed of two complementary strands.

Question 10

Which of the following is an example of feedback inhibition in metabolic pathways?

Accepted Answer

The end product of a pathway inhibits an enzyme involved earlier in the pathway.

Question 11

Which of the following is a correct statement about the four most common elements in living organisms?

Accepted Answer

Carbon, hydrogen, oxygen, and nitrogen are the most common elements.

Question 12

Which of the following best describes the function of lysosomes in animal cells?

Accepted Answer

Lysosomes digest and recycle cellular waste and damaged organelles.

Question 13

Which of the following statements about the central vacuole in plant cells is false?

Accepted Answer

The central vacuole digests chromosomes for recycling.

Question 14

Which of the following is a correct statement about the synthesis of glucose from carbon dioxide and water?

Accepted Answer

It is an endergonic reaction, requiring an input of energy.

Question 15

Which of the following is NOT a property of living organisms?

Accepted Answer

Ability to remain unchanged in a changing environment

Question 16

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

Accepted Answer

Zinc

Question 17

Which of the following statements about the function of ribosomes is correct?

Accepted Answer

Ribosomes synthesize proteins by translating mRNA.

Question 18

Which of the following is a correct statement about the role of a control in an experiment?

Accepted Answer

It provides a basis of comparison to the experimental group.

Question 19

Which of the following is a correct statement about the pH scale?

Accepted Answer

A decrease of 1 pH unit represents a tenfold increase in hydrogen ion concentration.

General Biology: Foundational Concepts and Processes (Chapters 1–5, 7)

Study Guide - Practice Questions