Question 1

Which of the following best illustrates the concept of emergent properties in biological systems?

Accepted Answer

The ability of a flock of birds to change direction rapidly, which is not seen in individual birds

Question 2

A scientist observes that plants grow faster when exposed to blue light compared to red light. She proposes that blue light increases the rate of photosynthesis. Which of the following is the best example of a testable hypothesis based on this observation?

Accepted Answer

If plants are exposed to blue light, then their rate of photosynthesis will be higher than those exposed to red light.

Question 3

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

Accepted Answer

Energy flows through an ecosystem, while chemicals cycle within it.

Question 4

Which of the following is an example of negative feedback regulation in the human body?

Accepted Answer

The release of insulin to lower blood glucose levels after eating

Question 5

Which of the following best distinguishes a prokaryotic cell from a eukaryotic cell?

Accepted Answer

Presence of a nucleus

Question 6

A researcher is studying the effect of fertilizer on plant growth. In her experiment, she varies the amount of fertilizer and measures the height of the plants after four weeks. Which is the independent variable?

Accepted Answer

The amount of fertilizer applied

Question 7

Which of the following is NOT one of the three domains of life?

Accepted Answer

Protista

Question 8

Which of the following best describes the role of DNA in living organisms?

Accepted Answer

DNA stores and transmits genetic information from one generation to the next.

Question 9

Which of the following scenarios best demonstrates the process of natural selection as described by Charles Darwin?

Accepted Answer

A population of bacteria develops resistance to an antibiotic over several generations.

Question 10

Which of the following is an example of deductive reasoning in biology?

Accepted Answer

Predicting that if all mammals have hair, and a whale is a mammal, then a whale must have hair.

Question 11

Which of the following best explains why climate change is considered a major theme in biology?

Accepted Answer

It influences the distribution, survival, and evolution of species.

Question 12

Which of the following is a correct statement about producers and consumers in an ecosystem?

Accepted Answer

Producers convert sunlight into chemical energy, which is then used by consumers.

Question 13

A student claims that a scientific theory is just a guess. Which of the following best corrects this misconception?

Accepted Answer

A scientific theory is a well-supported explanation based on a large body of evidence.

Question 14

Which of the following best describes the unity and diversity of life as explained by evolution?

Accepted Answer

All living things share a common ancestor but have adapted to different environments.

Question 15

Which of the following is an example of a multi-step biological process involving both energy flow and feedback regulation?

Accepted Answer

The regulation of blood glucose levels after a meal, where glucose is absorbed (energy flow) and insulin is released to lower blood sugar (negative feedback).

Question 16

Which of the following best describes the difference between inductive and deductive reasoning?

Accepted Answer

Inductive reasoning uses specific observations to form general conclusions; deductive reasoning uses general principles to make specific predictions.

Question 17

Which of the following best explains why chemical elements are recycled in ecosystems but energy is not?

Accepted Answer

Energy flows through ecosystems and is eventually lost as heat, while chemical elements are reused.

Question 18

A scientist wants to test the effect of temperature on enzyme activity. She keeps all variables constant except temperature and measures the rate of reaction. What is the dependent variable in this experiment?

Accepted Answer

The rate of reaction

Question 19

Which of the following is a correct application of the concept of emergent properties in medicine?

Accepted Answer

The human brain can process complex thoughts, which is not a property of individual neurons.

Question 20

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

Accepted Answer

The structure of a biological molecule or organ determines its function.

Chapter 1: Themes of Biology and Evolution – Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards