Question 1

Which of the following is NOT one of the seven properties common to all life?

Accepted Answer

Ability to photosynthesize

Question 2

In the hierarchy of biological organization, which level includes all the others: cell, molecule, organ, tissue?

Accepted Answer

Organ

Question 3

Which domain contains organisms with simple cells lacking a nucleus?

Accepted Answer

Domain Bacteria

Question 4

A scientific hypothesis must be:

Accepted Answer

Testable and falsifiable

Question 5

In a controlled experiment, the variable that is manipulated by the researcher is called the:

Accepted Answer

Independent variable

Question 6

Why are comparisons of DNA sequences considered observational and not experimental data?

Accepted Answer

Because scientists observe and record existing data without intervention

Question 7

Which of the following best describes an emergent property?

Accepted Answer

A property that arises from the interaction of individual components

Question 8

Which process is responsible for the unity and diversity of life on Earth?

Accepted Answer

Evolution

Question 9

Darwin’s theory of evolution by natural selection involves which two key elements?

Accepted Answer

Observations and inferences

Question 10

Artificial selection differs from natural selection in that:

Accepted Answer

Artificial selection involves intentional breeding for specific traits

Question 11

Which equation best represents the flow of genetic information in a cell?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 12

The structure of hemoglobin is directly related to its function because:

Accepted Answer

Its shape allows it to transport oxygen efficiently

Question 13

Energy flows through an ecosystem in which direction?

Accepted Answer

From sunlight to producers to consumers to heat

Question 14

Matter cycles through an ecosystem by moving:

Accepted Answer

From the atmosphere and soil, through producers, consumers, and decomposers, and back to the environment

Question 15

Systems biology attempts to model biological systems by:

Accepted Answer

Analyzing the interactions among their parts

Question 16

In a clinical trial, why do researchers match factors such as sex, age, and general health between control and experimental groups?

Accepted Answer

To minimize confounding variables and isolate the effect of the independent variable

Question 17

Which of the following is an example of a real-world application of evolutionary theory?

Accepted Answer

Selective breeding of crops for drought resistance

Question 18

Which of the following best illustrates the relationship between structure and function at the cellular level?

Accepted Answer

Long extensions of nerve cells enable transmission of impulses

Question 19

Which of the following is a correct statement about scientific theories?

Accepted Answer

They are broad in scope and supported by a large body of evidence

Question 20

Which of the following is a multi-step process that best describes the scientific method?

Accepted Answer

Observation $$\rightarrow$$ Hypothesis $$\rightarrow$$ Prediction $$\rightarrow$$ Experiment $$\rightarrow$$ Analysis

Biology: Exploring Life – Chapter 1 Study Notes

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