$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy}$$

Question 1

Which of the following best describes the scientific study of life in biology?

Accepted Answer

It investigates structure, function, diversity, and the processes underlying biological organization.

Question 2

Which of the following is a correct application of the scientific method in biology?

Accepted Answer

Testing a hypothesis by designing controlled experiments.

Question 3

A student is investigating the effect of pH on enzyme activity. Which variable should be kept constant to ensure valid results?

Accepted Answer

The type of enzyme used in each trial.

Question 4

Which equation correctly represents the process of cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}$$

Question 5

Which of the following best explains why photosynthesis is essential for life on Earth?

Accepted Answer

It produces oxygen and organic molecules used by most organisms for energy.

Question 6

A population of bacteria doubles every 20 minutes. If you start with 100 bacteria, how many will you have after 1 hour?

Accepted Answer

800

Question 7

Which of the following is NOT a function of DNA in living organisms?

Accepted Answer

Providing energy for cellular processes.

Question 8

Which process is responsible for the production of ATP in mitochondria?

Accepted Answer

Cellular respiration

Question 9

Which of the following best describes the role of enzymes in biochemical reactions?

Accepted Answer

They act as catalysts to speed up reactions without being consumed.

Question 10

A mutation occurs in a gene responsible for producing hemoglobin. Which level of biological organization is directly affected?

Accepted Answer

Molecule

Question 11

Which of the following is a correct statement about the relationship between genes and traits?

Accepted Answer

Traits are determined by proteins coded for by genes.

Question 12

Which equation represents the process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 13

Which of the following scenarios best illustrates natural selection?

Accepted Answer

A population of insects develops resistance to a pesticide over several generations.

Question 14

Which of the following is a correct statement about prokaryotic and eukaryotic cells?

Accepted Answer

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

Question 15

Which of the following best describes the role of populations in ecosystems?

Accepted Answer

Populations interact with each other and their environment, affecting energy flow and nutrient cycling.

Question 16

A scientist observes that a certain protist moves toward light. Which characteristic of life does this behavior demonstrate?

Accepted Answer

Response to stimuli

Question 17

Which of the following is a correct example of homeostasis in humans?

Accepted Answer

Sweating to cool the body when overheated.

Question 18

Which of the following best explains why classification is important in biology?

Accepted Answer

It helps scientists organize and communicate information about the diversity of life.

Question 19

Which of the following is a correct statement about communities in ecosystems?

Accepted Answer

Communities consist of all the populations of different species living in the same area.

Question 20

Which of the following is a multi-step process that involves both transcription and translation?

Accepted Answer

Protein synthesis

BIO101: Life – An Introduction to Biology (Syllabus and Study Guide)

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