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

Ability to decay as an ecosystem

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

Emergent properties are best described as:

Accepted Answer

Properties that arise when smaller parts combine to form a more complex system.

Question 8

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

Accepted Answer

Cellular level

Question 9

Which of the following is a requirement for natural selection to occur?

Accepted Answer

All of the above

Question 10

A population of insects is exposed to a pesticide. Over several generations, most of the population becomes resistant to the pesticide. 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 theory?

Accepted Answer

A testable and broad hypothesis supported by a large body of evidence

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 is the correct order of steps in the scientific method?

Accepted Answer

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

Question 18

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

Accepted Answer

All cells arise spontaneously.

Question 19

A scientist observes that even after sterilizing a broth, cells reappear in the broth over time. The scientist then asks: “Why do cells reappear in the broth after sterilization?” and designs/conducts an experiment. Which of the following is a hypothesis?

Accepted Answer

Cells appear only when preexisting cells grow & divide; therefore, cells only appear in exposed broths.

Question 20

Which of the following best illustrates the concept of an emergent property?

Accepted Answer

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

Introduction to Biology: Foundations, Hierarchy, Evolution, Taxonomy, and Scientific Method

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