Multiple Choice
Which of the following best describes the primary focus of ecology, a major theme in AP Biology Unit 8?
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1. Introduction to Biology
Introduction to Biology
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Which of the following best describes the primary function of DNA in living organisms?
A
To catalyze biochemical reactions as enzymes
B
To provide energy for cellular processes
C
To store genetic information that guides the development and functioning of organisms
D
To transport oxygen throughout the body
Verified step by step guidance1
Understand the role of DNA in living organisms: DNA (Deoxyribonucleic Acid) is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.
Eliminate incorrect options: DNA does not catalyze biochemical reactions as enzymes do. Enzymes are proteins that speed up chemical reactions.
Eliminate another incorrect option: DNA does not provide energy for cellular processes. Energy is primarily provided by molecules like ATP (Adenosine Triphosphate).
Eliminate the final incorrect option: DNA does not transport oxygen throughout the body. This function is carried out by hemoglobin, a protein found in red blood cells.
Conclude with the correct answer: The primary function of DNA is to store genetic information that guides the development and functioning of organisms.
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