Praxis Elementary Education: Science (5005) Practice Test

Question: 1 / 400

What biological molecules are responsible for passing traits through generations?

Carbohydrates

DNA

DNA is the biological molecule responsible for passing traits through generations as it carries the genetic information necessary for the growth, development, functioning, and reproduction of all living organisms. This information is encoded in its sequence of nucleotides, which form genes that determine specific traits. During reproduction, DNA is replicated and passed on to offspring, ensuring that genetic traits can be inherited from parents to their children.

The other options involve essential biological functions but do not directly carry genetic information. Carbohydrates are primarily energy sources and structural components, proteins perform a vast array of functions including catalyzing biochemical reactions and providing structural support, and lipids serve as long-term energy storage and key components of cell membranes, but are not involved in the transmission of genetic traits.

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Proteins

Lipids

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