Q: A scientist measures the mass of a sample in grams and wants to convert it to kilograms. Which metric conversion should they use?

$$1 \ \text{kg} = 1000 \ \text{g}$$

Q: Which of the following is the correct formula for calculating the total magnification of a compound microscope?

$$\text{Total Magnification} = \text{Objective Lens Magnification} \times \text{Ocular Lens Magnification}$$

Question 1

Which of the following best describes the difference between an independent variable and a dependent variable in a controlled experiment?

Accepted Answer

The independent variable is what you change, while the dependent variable is what you measure.

Question 2

A student is investigating the effect of light intensity on the rate of photosynthesis in a plant. Which of the following is the best example of a constant in this experiment?

Accepted Answer

The amount of water given to the plant each day.

Question 3

Which of the following is NOT a characteristic of life?

Accepted Answer

Ability to move voluntarily

Question 4

Which of the following best describes the relationship between catabolism and anabolism?

Accepted Answer

Both catabolism and anabolism are types of metabolic reactions, but catabolism releases energy and anabolism requires energy.

Question 5

Which of the following is an example of an abiotic factor in an ecosystem?

Accepted Answer

The amount of sunlight

Question 6

A scientist measures the mass of a sample in grams and wants to convert it to kilograms. Which metric conversion should they use?

Accepted Answer

$$1 \ 	ext{kg} = 1000 \ 	ext{g}$$

Question 7

Which of the following best represents the correct order of the biological hierarchy from smallest to largest?

Accepted Answer

Cell, tissue, organ, organism, population

Question 8

A student is asked to graph the relationship between temperature and enzyme activity. Which variable should be placed on the x-axis?

Accepted Answer

Temperature

Question 9

Which of the following best explains why safety rules are important in a biology laboratory?

Accepted Answer

They prevent accidents and protect everyone in the lab.

Question 10

Which of the following is an example of a controlled variable in an experiment testing the effect of fertilizer on plant growth?

Accepted Answer

The type of plant used in all groups

Question 11

Which of the following best describes the process of sexual reproduction?

Accepted Answer

Offspring inherit genetic material from two parents.

Question 12

A student is using a microscope to observe onion cells. Which part of the microscope should they use to adjust the amount of light passing through the specimen?

Accepted Answer

Diaphragm

Question 13

Which of the following is the correct formula for calculating the total magnification of a compound microscope?

Accepted Answer

$$	ext{Total Magnification} = 	ext{Objective Lens Magnification} 	imes 	ext{Ocular Lens Magnification}$$

Question 14

Which of the following is an example of an anabolic reaction?

Accepted Answer

The synthesis of proteins from amino acids

Question 15

Which of the following best describes the term 'homeostasis'?

Accepted Answer

The process by which organisms maintain a stable internal environment

Question 16

Which of the following is the correct order of the three domains of life?

Accepted Answer

Bacteria, Archaea, Eukarya

Question 17

A researcher is comparing the growth of bacteria in two different nutrient broths. Which of the following is the dependent variable?

Accepted Answer

The growth of bacteria measured

Question 18

Which of the following best explains why metric units are preferred in scientific measurements?

Accepted Answer

They are based on multiples of 10, making conversions easier.

Question 19

Which of the following is an example of a biotic factor affecting an ecosystem?

Accepted Answer

The presence of decomposers

Question 20

A student is asked to explain the difference between a hypothesis and a theory. Which of the following is the best explanation?

Accepted Answer

A hypothesis is a testable prediction, while a theory is a well-supported explanation based on evidence.

General Biology: Key Concepts and Study Guide

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