$$\text{DNA} \rightarrow \text{RNA} \rightarrow \text{Protein}$$

Question 1

Which of the following is NOT one of the five fundamental characteristics shared by all living organisms?

Accepted Answer

All organisms possess a nervous system.

Question 2

According to the cell theory, which statement is correct?

Accepted Answer

All organisms are made up of cells, and all cells come from preexisting cells.

Question 3

Louis Pasteur’s experiment was designed to test which hypothesis?

Accepted Answer

Cells arise from preexisting cells, not by spontaneous generation.

Question 4

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA codes for RNA, which codes for proteins.

Question 5

A change in the DNA sequence that results in a new protein variant is most likely to lead to:

Accepted Answer

Heritable variation that can contribute to evolutionary diversity.

Question 6

Which equation best represents the flow of genetic information according to the central dogma?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$$

Question 7

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

Accepted Answer

Individuals must vary in characteristics that are heritable.

Question 8

In the example of Galápagos finches, what was the adaptation that increased fitness?

Accepted Answer

Small, pointed beaks for eating soft seeds.

Question 9

Which statement about evolution is correct?

Accepted Answer

Evolution is the change in characteristics of a population over time.

Question 10

What is the primary function of adenosine triphosphate (ATP) in living organisms?

Accepted Answer

To provide chemical energy for cellular processes.

Question 11

Which of the following best describes a phylogenetic tree?

Accepted Answer

A family tree of organisms depicting evolutionary relationships.

Question 12

If two species have fewer sequence variations in their DNA, what does this suggest about their relationship?

Accepted Answer

They are more closely related.

Question 13

Which of the following is NOT a major group indicated by the tree of life?

Accepted Answer

Viruses

Question 14

Which scientist first observed single-celled organisms, referred to as 'animalcules'?

Accepted Answer

Anton van Leeuwenhoek

Question 15

Which of the following statements about the chromosome theory of inheritance is correct?

Accepted Answer

Genes are located on chromosomes, which are molecules of DNA.

Question 16

Speciation occurs when:

Accepted Answer

Populations diverge to form new species.

Question 17

Which of the following is a plausible consequence of a mistake during DNA replication?

Accepted Answer

Heritable variation that can lead to evolutionary change.

Question 18

Which of the following is a real-world application of the cell theory?

Accepted Answer

Understanding how cancer develops from uncontrolled cell division.

Question 19

Which of the following best defines 'fitness' in the context of natural selection?

Accepted Answer

Ability of an individual to produce many surviving offspring.

Question 20

Which of the following is a distinguishing feature of eukaryotic cells compared to prokaryotic cells?

Accepted Answer

Presence of a nucleus.

Biology: The Study of Life – Chapter 1 Study Notes

Study Guide - Practice Questions