Question 1

Which of the following best describes the main unifying theme in biology that connects all sub-disciplines such as genetics, ecology, and zoology?

Accepted Answer

The process of evolution

Question 2

In the hierarchy of biological organization, which of the following sequences correctly orders the levels from largest to smallest?

Accepted Answer

Biosphere, ecosystem, community, population, organism

Question 3

Which of the following statements about energy and chemical nutrients in an ecosystem is correct?

Accepted Answer

Chemical nutrients are recycled, but energy flows one-way through the ecosystem.

Question 4

A scientist observes a group of ring-tailed lemurs in Madagascar and records their behaviors. According to the levels of biological organization, which level is the scientist primarily studying?

Accepted Answer

Population

Question 5

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

Accepted Answer

Ability to photosynthesize

Question 6

Which domain includes organisms that are unicellular, lack a nucleus, and are not classified as bacteria?

Accepted Answer

Domain Archaea

Question 7

A biologist is studying the cycling of nutrients from the soil to plants, then to animals, and finally to decomposers. Which concept is best illustrated by this scenario?

Accepted Answer

The recycling of chemical nutrients

Question 8

Which of the following best explains why energy is not recycled in an ecosystem?

Accepted Answer

Energy is converted to heat and lost to the environment at each transfer.

Question 9

Which of the following is an example of a hypothesis in the scientific process?

Accepted Answer

A proposed explanation for a set of observations

Question 10

Which of the following best describes the difference between a theory and a hypothesis in science?

Accepted Answer

A theory is supported by a large body of evidence, while a hypothesis is a proposed explanation for observations.

Question 11

Which of the following is the correct order of the structural hierarchy in multicellular organisms, from smallest to largest?

Accepted Answer

Molecule, organelle, cell, tissue, organ, organ system, organism

Question 12

A new unicellular organism is discovered that contains a nucleus and other membrane-bound organelles. To which domain does it most likely belong?

Accepted Answer

Domain Eukarya

Question 13

Which of the following best illustrates the process of natural selection as described by Darwin?

Accepted Answer

Individuals with inherited variations that are favorable in a given environment are more likely to survive and reproduce.

Question 14

Which of the following is a real-world example of a control in a scientific experiment?

Accepted Answer

A group of plants that receives no fertilizer while another group receives fertilizer

Question 15

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

Accepted Answer

They recycle chemical nutrients by breaking down dead organisms.

Question 16

Which of the following is a function that all cells must be able to perform?

Accepted Answer

Regulate their internal environment

Question 17

A peer-reviewed scientific journal article is important in science because:

Accepted Answer

It ensures that research is original, significant, logical, and thorough.

Question 18

Which of the following best explains why all living organisms are considered to have unity?

Accepted Answer

They all use DNA as their genetic material.

Question 19

Which of the following is an example of a population in biological terms?

Accepted Answer

All the ring-tailed lemurs living in a specific forest

Question 20

Which of the following best describes the process by which chemical nutrients are cycled in an ecosystem?

Accepted Answer

Chemical nutrients move from the atmosphere and soil to producers, then to consumers, then to decomposers, and finally back to the environment.

Introduction to Biology: The Science of Life

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