Question 1

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

Accepted Answer

A property that arises only when individual parts interact in a specific arrangement, such as a functioning bicycle assembled from its parts.

Question 2

Which of the following is NOT one of the five unifying themes of biology?

Accepted Answer

Photosynthesis

Question 3

A scientist observes that a plant grows faster when exposed to blue light than to red light. She hypothesizes that blue light increases the rate of photosynthesis. Which of the following is the best example of a testable prediction based on her hypothesis?

Accepted Answer

If plants are exposed to blue light, then they will grow taller than plants exposed to red light.

Question 4

Which of the following statements about cells is TRUE?

Accepted Answer

Prokaryotic cells lack membrane-enclosed organelles.

Question 5

In the context of energy flow in ecosystems, which of the following statements is correct?

Accepted Answer

Energy flows through an ecosystem, usually entering as light and exiting as heat.

Question 6

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

Accepted Answer

High blood glucose stimulates insulin secretion, which lowers blood glucose and reduces further insulin secretion.

Question 7

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

Accepted Answer

The shape of a bird’s wing enables flight.

Question 8

A controlled experiment is one in which:

Accepted Answer

There are at least two groups, one of which does not receive the experimental treatment.

Question 9

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

Accepted Answer

A theory is broader in scope than a hypothesis and is supported by more evidence.

Question 10

Which of the following is an example of inductive reasoning?

Accepted Answer

All observed swans are white; therefore, all swans are probably white.

Question 11

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

Accepted Answer

Organelle, cell, tissue, organ, organism, population, community, ecosystem, biosphere

Question 12

Which of the following best explains why the limbs of mammals such as bats and whales have similar bone structures?

Accepted Answer

They inherited the limb structure from a common ancestor.

Question 13

In the mouse camouflage experiment, what was the independent variable?

Accepted Answer

The color of the mouse models placed in different habitats.

Question 14

Which of the following is an example of positive feedback?

Accepted Answer

The release of oxytocin during childbirth, which increases contractions.

Question 15

Which of the following best describes the flow of energy and cycling of matter in an ecosystem?

Accepted Answer

Energy flows through an ecosystem, while matter cycles within it.

Question 16

Which of the following is a characteristic of all living things?

Accepted Answer

Order, evolutionary adaptation, regulation, reproduction, energy processing, growth and development, and response to the environment.

Question 17

Which of the following best illustrates the concept of systems biology?

Accepted Answer

Analyzing how different genes, proteins, and environmental factors interact to influence cell behavior.

Question 18

Which of the following is an example of deductive reasoning?

Accepted Answer

All mammals have hair. A whale is a mammal. Therefore, a whale has hair.

Question 19

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

Accepted Answer

They convert light energy into chemical energy through photosynthesis.

Question 20

Which of the following is a real-world example of how human activity can disrupt biological interactions in an ecosystem?

Accepted Answer

Burning fossil fuels, leading to increased atmospheric $$CO_2$$ and climate change.

Introduction to Biology: Unifying Themes, Organization, and the Scientific Method

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