Question 1

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

Accepted Answer

They are capable of evolving.

Question 2

Which statement best describes the difference between a scientific theory and a hypothesis?

Accepted Answer

A theory is a broad explanation supported by evidence, while a hypothesis is a testable statement about a specific observation.

Question 3

Which experiment provided strong evidence against the idea of spontaneous generation?

Accepted Answer

Louis Pasteur’s swan-neck flask experiment

Question 4

According to the central dogma of molecular biology, what is the correct flow of genetic information?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 5

Which of the following best describes an adaptation?

Accepted Answer

A trait that increases the fitness of an individual in a particular environment

Question 6

A biologist is testing whether a new fertilizer increases plant growth. She waters 20 plants with regular water and 20 with water containing fertilizer. What is the independent variable in this experiment?

Accepted Answer

The presence or absence of fertilizer in the water

Question 7

Which of the following is a correct example of binomial nomenclature?

Accepted Answer

Panthera tigris

Question 8

Which of the following best explains why a control group is important in an experiment?

Accepted Answer

It provides a baseline to compare the effects of the independent variable.

Question 9

If a DNA sequence changes and results in a different protein being produced, what is the most likely outcome?

Accepted Answer

The organism’s outward appearance may change, leading to heritable variation.

Question 10

Which of the following is NOT a requirement for natural selection to occur in a population?

Accepted Answer

All individuals must be genetically identical.

Question 11

Which of the following best describes a population in biological terms?

Accepted Answer

A group of individuals of the same species living in the same area at the same time

Question 12

Which of the following statements about the tree of life is correct?

Accepted Answer

It depicts genealogical relationships among all species with a single ancestral species at its base.

Question 13

Which of the following is a correct pairing of DNA bases?

Accepted Answer

Adenine (A) pairs with Thymine (T)

Question 14

A scientist compares the DNA sequences of three species and finds that two of them have fewer sequence differences between them than with the third. What can she conclude?

Accepted Answer

The two species with fewer differences are more closely related.

Question 15

Which of the following is an example of a null hypothesis in an experiment testing the effect of fertilizer on plant growth?

Accepted Answer

Fertilizer has no effect on plant growth.

Question 16

Which of the following best describes the role of ATP in living organisms?

Accepted Answer

ATP stores and provides chemical energy for cellular processes.

Question 17

Which of the following is a real-world example of natural selection?

Accepted Answer

Finches with small, pointed beaks thriving when small, soft seeds are abundant

Question 18

Which of the following is a correct statement about the domains of life?

Accepted Answer

The three domains are Bacteria, Archaea, and Eukarya.

Question 19

Which of the following is a dependent variable in an experiment testing the effect of nitrogen on plant health?

Accepted Answer

Leaf length

Question 20

Which of the following best explains why keeping variables constant is important in an experiment?

Accepted Answer

It ensures that any observed effect is due to the independent variable.

Biology: The Study of Life – Chapter 1 Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards