Question 1

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

Accepted Answer

The scientific study of life and living organisms.

Question 2

Which of the following is considered the smallest, most basic unit of life?

Accepted Answer

Cell

Question 3

All living organisms are:

Accepted Answer

Either unicellular or multicellular

Question 4

Which of the following is NOT a characteristic of life?

Accepted Answer

The ability to form salt crystals from a solution.

Question 5

Salt concentration in blood remains relatively steady, regardless of a person’s diet. This best illustrates:

Accepted Answer

Homeostasis

Question 6

Which of the following correctly orders the hierarchy of biological organization from smallest to largest?

Accepted Answer

Atom → Organelle → Cell → Tissue → Organ → Organ System → Organism → Population → Community → Ecosystem → Biosphere

Question 7

At which level of the organizational hierarchy does life first emerge?

Accepted Answer

The cellular level

Question 8

Which of the following is the best example of an emergent property?

Accepted Answer

Cells are made of simple molecules, but when organized together, these molecules can perform living functions.

Question 9

Which of the following is true of natural selection?

Accepted Answer

All of the above

Question 10

A population of crickets is mostly green, but over generations, brown crickets become more common because birds eat the green ones more easily. This is an example of:

Accepted Answer

Natural selection

Question 11

Which branch of biology is concerned with the naming and classifying of organisms?

Accepted Answer

Taxonomy

Question 12

Which of the following kingdoms is NOT part of the Eukaryotic Domain?

Accepted Answer

Kingdom Eubacteria

Question 13

Biologists can divide living organisms into two groups: autotrophs and heterotrophs, which differ in ________.

Accepted Answer

Their method of obtaining energy.

Question 14

Which of the following best describes a scientific hypothesis?

Accepted Answer

A testable and falsifiable explanation for an observation.

Question 15

In an experiment to test the effect of temperature on bacterial reproduction rate, temperature would be the:

Accepted Answer

Independent variable

Question 16

A scientist wants to study the effects of nitrogen on wheat plants. They set up an experiment with 4 groups of plants: group A gets 20 pounds of nitrogen per acre, group B gets 40 pounds per acre, group C gets 60 pounds per acre, and group D gets 0 pounds per acre. Which of the following is the control group? Is it a positive or negative control group?

Accepted Answer

Group D; negative control group

Question 17

Which of the following statements about the cell theory is FALSE?

Accepted Answer

All cells arise spontaneously.

Question 18

Which of the following best describes the relationship between a hypothesis and a prediction in the scientific method?

Accepted Answer

A hypothesis is a proposed explanation, and it leads to a prediction about what will happen.

Question 19

Which of the following is an example of a positive control in an experiment testing a new drug?

Accepted Answer

A group receiving a drug known to be effective.

Question 20

Which of the following is the correct order of steps in the scientific method?

Accepted Answer

Observation → Hypothesis → Experiment → Data Analysis → Conclusion → Peer Review & Publish

Introduction to Biology: Foundations, Organization, Evolution, and Scientific Method

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