Q: Which of the following is the correct formula for calculating atomic mass?

$$\text{Atomic mass} = \text{Number of protons} + \text{Number of neutrons}$$

Question 1

Which of the following best describes a scientific theory in biology?

Accepted Answer

A broad explanation for a wide range of phenomena, supported by a large body of evidence.

Question 2

In an experiment testing whether bumble bees prefer wooden balls or not, which of the following would be considered the null hypothesis?

Accepted Answer

Bumble bees will not show any preference between wooden balls and other objects.

Question 3

Which of the following is NOT a characteristic shared by all living organisms?

Accepted Answer

Ability to photosynthesize

Question 4

A scientist observes that giraffes with longer necks tend to eat food unavailable to those with shorter necks. Which type of hypothesis is being tested?

Accepted Answer

Alternative hypothesis

Question 5

Which of the following correctly represents the hierarchy from largest to smallest in genetic information?

Accepted Answer

Cell → Nucleus → Chromosome → DNA → Gene

Question 6

Which base pairing is correct according to the DNA double helix structure?

Accepted Answer

$$A = T$$

Question 7

A population of small, round bumble bees increases in number after a drought due to their higher fitness. This is an example of:

Accepted Answer

Natural selection

Question 8

Which scientist is credited with observing single-celled organisms called 'animalcules' using a microscope?

Accepted Answer

Antonie van Leeuwenhoek

Question 9

Which of the following statements about cell theory is FALSE?

Accepted Answer

Cells can spontaneously generate under certain conditions.

Question 10

If a scientist wants to test the effect of light on plant growth, which of the following is the best example of a controlled variable?

Accepted Answer

Amount of water given to each plant

Question 11

Which of the following is the correct formula for calculating atomic mass?

Accepted Answer

$$	ext{Atomic mass} = 	ext{Number of protons} + 	ext{Number of neutrons}$$

Question 12

Which of the following best explains why water is a polar molecule?

Accepted Answer

Oxygen is more electronegative than hydrogen, causing unequal sharing of electrons.

Question 13

Which process is responsible for passing genetic information from one generation to the next?

Accepted Answer

Cell division

Question 14

A researcher finds that hydrogen gas can be used as a fuel source instead of fossil fuels. Which property of hydrogen makes this possible?

Accepted Answer

Hydrogen has a high energy content when combusted.

Question 15

Which of the following is NOT a function of proteins in living cells?

Accepted Answer

Storing genetic information

Question 16

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

Accepted Answer

A hypothesis is a broad explanation, while a prediction is a specific expected result.

Question 17

Which of the following is a real-world example of natural selection?

Accepted Answer

Small, round bumble bees survive better during drought due to increased fitness.

Question 18

Which of the following statements about DNA is TRUE?

Accepted Answer

DNA contains the bases adenine, thymine, cytosine, and guanine.

Question 19

Which of the following is the correct scientific name format for humans?

Accepted Answer

Homo sapiens

Question 20

A scientist wants to determine the evolutionary relationship between two species using DNA sequence data. Which of the following would indicate a closer relationship?

Accepted Answer

Fewer sequence differences between the two species

General Biology: The Study of Life and Chemical Basis of Life

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