Question 1

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

Accepted Answer

A lizard sunbathing to raise its body temperature on a cold morning.

Question 2

A scientist observes that a certain species of bacteria can survive in boiling hot springs. To which domain does this organism most likely belong?

Accepted Answer

Archaea

Question 3

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

Accepted Answer

Biosphere, Ecosystem, Community, Population, Organism

Question 4

A researcher is testing the effect of a new fertilizer on plant growth. She applies the fertilizer to half of her plants and leaves the other half untreated. She measures the height of all plants after four weeks. In this experiment, what is the dependent variable?

Accepted Answer

The height of the plants after four weeks

Question 5

Which of the following statements about gene expression is correct?

Accepted Answer

Gene expression is the flow of genetic information from DNA to mRNA to protein.

Question 6

A student is given the DNA sequence $$G C A T A A T G. $$What is the complementary DNA strand?

Accepted Answer

$$C G T A T T A C$$

Question 7

Which of the following is NOT a property of life?

Accepted Answer

Ability to photosynthesize

Question 8

In the scientific method, which of the following best describes a hypothesis?

Accepted Answer

A tentative explanation that can be tested and is potentially falsifiable

Question 9

Which of the following best distinguishes discovery science from hypothesis-based science?

Accepted Answer

Discovery science relies on repeated observation and measurement, while hypothesis-based science tests specific predictions.

Question 10

Which of the following is the correct order of taxonomic ranks from most inclusive to least inclusive?

Accepted Answer

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

Question 11

A biologist is studying a group of all the different species of plants, animals, and microorganisms living in a forest. Which level of biological organization is she investigating?

Accepted Answer

Community

Question 12

Which of the following is an example of a quantitative observation?

Accepted Answer

The plant grew 3 centimeters in one week.

Question 13

Which of the following statements about the six kingdoms of life is correct?

Accepted Answer

Bacteria and Archaea are both prokaryotic domains.

Question 14

Which of the following best describes the process of gene expression in the context of blood glucose regulation?

Accepted Answer

Pancreas cells use gene expression to produce insulin, which helps regulate blood glucose levels.

Question 15

Which of the following is the smallest unit that can be considered alive?

Accepted Answer

Cell

Question 16

A scientist is testing whether a new drug lowers blood pressure. She gives the drug to one group and a placebo to another, then measures blood pressure in both groups. What is the independent variable in this experiment?

Accepted Answer

The group receiving the drug or placebo

Question 17

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 18

Which of the following best describes the relationship between DNA, genes, and proteins?

Accepted Answer

Genes are segments of DNA that encode the instructions for making proteins.

Question 19

A student claims that all living things must be able to move. Which property of life does this statement incorrectly assume?

Accepted Answer

Movement is not a required property of life; not all living things move.

Question 20

Which of the following best describes the difference between qualitative and quantitative data in scientific research?

Accepted Answer

Qualitative data are descriptive observations, while quantitative data are numerical measurements.

Introduction to Biology: Properties, Classification, and the Process of Science

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