Question 1

Which of the following best describes an emergent property in biological systems?

Accepted Answer

A property that arises only when individual components interact at higher levels of organization.

Question 2

Which of the following statements about the flow of energy and cycling of matter in ecosystems is correct?

Accepted Answer

Energy flows through an ecosystem, usually entering as light and exiting as heat, while matter cycles within the ecosystem.

Question 3

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

Accepted Answer

Organelle → Cell → Tissue → Organ → Organism

Question 4

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus, while prokaryotic cells do not.

Question 5

A scientist discovers a new single-celled organism with a nucleus and membrane-bound organelles. To which domain does this organism most likely belong?

Accepted Answer

Eukarya

Question 6

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

Accepted Answer

The structure of a biological component provides clues about its function, and knowing the function can provide insight into its structure.

Question 7

Which of the following statements about DNA is correct?

Accepted Answer

DNA is composed of two long chains arranged in a double helix, with four types of nucleotides.

Question 8

In the process of gene expression, which sequence correctly describes the flow of genetic information?

Accepted Answer

DNA → RNA → Protein

Question 9

Which of the following is an example of negative feedback regulation in biological systems?

Accepted Answer

The secretion of insulin in response to high blood glucose, which lowers blood glucose and reduces further insulin secretion.

Question 10

Which of the following best describes the concept of evolution as it relates to biology?

Accepted Answer

Evolution is the change in allele frequencies in a population over time.

Question 11

Which of the following is NOT a unifying theme of biology?

Accepted Answer

Gravity

Question 12

A population of beetles has two color morphs: green and brown. Birds more easily spot and eat green beetles on brown soil. Over several generations, the frequency of brown beetles increases. This is an example of:

Accepted Answer

Natural selection

Question 13

Which of the following best illustrates the cycling of matter in an ecosystem?

Accepted Answer

Plants take up chemicals from the soil, which are returned to the soil by decomposers after organisms die.

Question 14

Which of the following is true about the three domains of life?

Accepted Answer

Bacteria and Archaea are both prokaryotic, while Eukarya includes all eukaryotic organisms.

Question 15

Which of the following is an example of an adaptation resulting from natural selection?

Accepted Answer

A bat's wing structure that enables flight.

Question 16

Which of the following best explains why DNA is considered the universal genetic language?

Accepted Answer

All organisms use the same four nucleotides in their DNA.

Question 17

A researcher observes that when a certain hormone is released, it stimulates its own further release. This is an example of:

Accepted Answer

Positive feedback

Question 18

Which of the following best describes the process of descent with modification?

Accepted Answer

Species change over time, giving rise to new species while retaining some traits from common ancestors.

Question 19

Which of the following is a correct example of feedback regulation in the human body?

Accepted Answer

The pancreas secretes insulin in response to high blood glucose, which lowers blood glucose and reduces further insulin secretion.

Question 20

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

Accepted Answer

They convert sunlight into chemical energy through photosynthesis.

Chapter 1: Evolution, the Themes of Biology, and Scientific Inquiry – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards