Multiple Choice
Why is DNA often referred to as the "blueprint of life"?
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7. DNA and Chromosome Structure
DNA as the Genetic Material
Multiple Choice
In the context of DNA as the genetic material, what is the primary function of DNA in a cell?
A
To store and transmit hereditary information by encoding instructions for RNA and protein synthesis
B
To catalyze most cellular chemical reactions as the main class of enzymes
C
To provide the primary structural framework of the cell membrane as a phospholipid component
D
To generate ATP directly through oxidative phosphorylation in the mitochondria
Verified step by step guidance1
Understand that DNA (deoxyribonucleic acid) is the molecule that carries genetic information in living organisms.
Recognize that the primary role of DNA is to store hereditary information, which means it contains the instructions needed for the development, functioning, and reproduction of cells.
Know that DNA encodes these instructions in the form of sequences of nucleotides, which are transcribed into RNA and then translated into proteins, the molecules that perform most cellular functions.
Differentiate DNA's function from other cellular components: enzymes catalyze reactions, phospholipids form membranes, and mitochondria generate ATP, but these are not the primary roles of DNA.
Conclude that the main function of DNA is to store and transmit hereditary information by encoding instructions for RNA and protein synthesis.
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