Question 1

Which of the following is NOT one of the seven properties of life?

Accepted Answer

Lack of organization

Question 2

Streptococcus bacteria are classified under which domain?

Accepted Answer

Bacteria

Question 3

Both a single-celled amoeba and humans belong to the domain Eukarya because:

Accepted Answer

Their genetic material is located inside a nucleus

Question 4

What is the lowest level of biological organization?

Accepted Answer

Cell

Question 5

Which of the following best describes the highest level of biological organization?

Accepted Answer

Biosphere

Question 6

At which level did life first emerge according to biological organization?

Accepted Answer

Cell

Question 7

A scientist observes that a certain plant grows faster in sunlight than in shade. She proposes that sunlight increases the rate of photosynthesis, leading to faster growth. This proposed explanation is called a:

Accepted Answer

Hypothesis

Question 8

Which of the following is a characteristic of a good hypothesis?

Accepted Answer

It can be tested and falsified

Question 9

When a hypothesis is supported by a large body of evidence, it becomes a:

Accepted Answer

Theory

Question 10

In a controlled experiment testing the effect of fertilizer on plant growth, the amount of fertilizer added is the:

Accepted Answer

Independent variable

Question 11

In the same experiment, the plant growth measured in response to fertilizer is the:

Accepted Answer

Dependent variable

Question 12

The group in an experiment that receives the treatment is called the ______ group, and the group that does not receive the treatment is called the ______ group.

Accepted Answer

Experimental; control

Question 13

Darwin’s theory that explains the unity and diversity of life is called:

Accepted Answer

Theory of evolution

Question 14

The mechanism for evolution described by Darwin is:

Accepted Answer

Natural selection

Question 15

In an ecosystem, plants are classified as:

Accepted Answer

Producers

Question 16

Which of the following are considered consumers and decomposers in an ecosystem, respectively?

Accepted Answer

Animals; fungi

Question 17

In an ecosystem, which of the following best describes the flow of chemicals and energy?

Accepted Answer

Chemicals are recycled and energy flows one way

Question 18

A researcher is testing a new drug on bacteria. She sets up two groups: one receives the drug, and the other does not. She measures the growth rate of bacteria in both groups. Which of the following is the dependent variable?

Accepted Answer

The growth rate of bacteria

Question 19

Which of the following best illustrates the application of the scientific method in a real-world scenario?

Accepted Answer

A doctor observes that patients recover faster with a new treatment, proposes a hypothesis, tests it with a controlled experiment, and publishes the results.

Question 20

Which of the following equations best represents the energy flow in an ecosystem, where $$E_{in} is $$the energy input from the sun, $$E_{used} is $$the energy used by organisms, and $$E_{lost} is $$the energy lost as heat?

Accepted Answer

$$E_{in} = E_{used} + E_{lost}$$

BIO101: Core Concepts and Scientific Method Study Guide

Study Guide - Practice Questions

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