Question 1

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

Accepted Answer

Biology

Question 2

The prefix 'bio-' means _____, and the suffix '-ology' means _____?

Accepted Answer

'life'; 'the study of'

Question 3

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

Accepted Answer

Cell

Question 4

All living organisms are:

Accepted Answer

Either uni- or multi-cellular

Question 5

Which of the following is NOT a characteristic of life?

Accepted Answer

Being composed of viruses

Question 6

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

Accepted Answer

Homeostasis

Question 7

Which of the following shows the correct order in terms of the hierarchy of biological organization from largest to smallest?

Accepted Answer

Biosphere → Ecosystem → Community → Population → Organism

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

At which point of the organizational hierarchy does life emerge?

Accepted Answer

The cellular level

Question 10

Which of the following is true of natural selection?

Accepted Answer

a, b, & c

Question 11

A population of crickets is exposed to birds that preferentially eat green crickets. Over generations, the population becomes mostly brown crickets. This is an example of:

Accepted Answer

Natural selection

Question 12

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

Accepted Answer

Taxonomy

Question 13

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

Accepted Answer

Kingdom Eubacteria

Question 14

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

Accepted Answer

Their method of obtaining energy

Question 15

Which of the following shows the best order of steps of the scientific method?

Accepted Answer

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

Question 16

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 17

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

Accepted Answer

All cells arise spontaneously.

Question 18

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

Accepted Answer

Independent variable

Question 19

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)

Introduction to Biology: The Science of Life

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