Question 1

Which of the following best describes the process of natural selection as proposed by Darwin?

Accepted Answer

Individuals with traits best suited to their environment are more likely to survive and reproduce, passing those traits to the next generation.

Question 2

Which of the following is NOT a characteristic shared by all living organisms?

Accepted Answer

Ability to photosynthesize

Question 3

A scientist observes that a certain plant grows faster in sunlight than in shade. Which step of the scientific process is the scientist performing?

Accepted Answer

Making an observation

Question 4

Which of the following statements about hypotheses is correct?

Accepted Answer

A hypothesis can be supported by evidence but never proven absolutely true.

Question 5

Which of the following correctly lists the hierarchy of biological classification from most inclusive to least inclusive?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 6

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

They cannot reproduce independently and require a host cell to replicate.

Question 7

Which process is responsible for the transmission of genetic information from one generation to the next in eukaryotes?

Accepted Answer

Mitosis and meiosis

Question 8

Which of the following statements about gene expression is correct?

Accepted Answer

Gene expression includes DNA replication, transcription, and translation.

Question 9

A biologist is studying a single-celled organism that lacks a nucleus and membrane-bound organelles. Which domain does this organism most likely belong to?

Accepted Answer

Bacteria

Question 10

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organisms, returning nutrients to the soil.

Question 11

Which of the following equations correctly represents the process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 12

Which of the following is an example of homeostasis in living organisms?

Accepted Answer

A human sweating to cool down when overheated

Question 13

Which of the following statements about isotopes is correct?

Accepted Answer

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

Question 14

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have both.

Question 15

A researcher wants to test the effect of temperature on the rate of enzyme activity. Which of the following is the best example of a testable hypothesis for this experiment?

Accepted Answer

If the temperature increases, then the rate of enzyme activity will increase up to an optimal point and then decrease.

Question 16

Which of the following is a correct statement about the flow of energy in an ecosystem?

Accepted Answer

Energy flows one way through an ecosystem, entering as sunlight and leaving as heat.

Question 17

Which of the following best describes the process of gene expression?

Accepted Answer

The process by which information from a gene is used to synthesize a functional product, such as a protein.

Question 18

Which of the following is an example of evolutionary adaptation?

Accepted Answer

A population of insects developing resistance to a pesticide over several generations.

Question 19

Which of the following best explains why scientific theories are considered more comprehensive than hypotheses?

Accepted Answer

Theories are supported by a large body of evidence and explain a wide range of phenomena.

Question 20

Which of the following best describes the relationship between structure and function in biology?

Accepted Answer

The structure of a biological component determines its function.

Foundations of General Biology: Life, Cells, Genetics, and Classification

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