$$\text{Mass number} = \text{Number of protons} + \text{Number of neutrons}$$

Question 1

Which of the following is NOT one of the eight key characteristics of life?

Accepted Answer

Photosynthesis

Question 2

A scientist is studying how a plant bends toward sunlight. Which property of life is being observed?

Accepted Answer

Sensitivity or response to stimuli

Question 3

Which of the following best describes homeostasis?

Accepted Answer

The process by which organisms maintain a stable internal environment

Question 4

Which level of biological organization is defined as a group of similar cells carrying out the same function?

Accepted Answer

Tissue

Question 5

Which of the following statements about atoms is TRUE?

Accepted Answer

Atoms of the same element have the same number of protons

Question 6

What is the correct formula for calculating the mass number of an atom?

Accepted Answer

$$	ext{Mass number} = 	ext{Number of protons} + 	ext{Number of neutrons}$$

Question 7

Which type of chemical bond is the strongest?

Accepted Answer

Covalent bond

Question 8

Why does water have a high resistance to temperature change compared to most other substances?

Accepted Answer

Because of hydrogen bonding between water molecules

Question 9

Which of the following is an example of a trace element essential for life?

Accepted Answer

Iron

Question 10

A solution is made by dissolving salt in water. In this scenario, which is the solvent and which is the solute?

Accepted Answer

Water is the solvent, salt is the solute

Question 11

Which of the following best explains why ice floats on water?

Accepted Answer

Hydrogen bonds in ice create a lattice that makes it less dense than liquid water

Question 12

Which property of water is most important for the transport of water from plant roots to leaves?

Accepted Answer

Its cohesion due to hydrogen bonding

Question 13

Which of the following is a correct statement about radioactive isotopes?

Accepted Answer

Their nuclei decay spontaneously, emitting particles and energy

Question 14

Which branch of biological study focuses on the structure and function of microorganisms?

Accepted Answer

Microbiology

Question 15

Which scientist first proposed organizing the known species of organisms into a hierarchical taxonomy?

Accepted Answer

Carl Linnaeus

Question 16

A phylogenetic tree is used to:

Accepted Answer

Diagram evolutionary relationships among biological species

Question 17

Which of the following is TRUE about prokaryotic cells?

Accepted Answer

They lack a nucleus and membrane-bound organelles

Question 18

Which of the following is a real-world application of radiation in biology?

Accepted Answer

Treating cancer by damaging DNA in cancer cells

Question 19

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between atoms

Question 20

Which of the following is the correct order of biological organization from smallest to largest?

Accepted Answer

Atom, molecule, cell, tissue, organ, organ system, organism, ecosystem, biosphere

Foundations of General Biology: Properties of Life, Organization, and Essential Chemistry

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