Question 22

Genetic instructions are carried by nucleic acids.

Nucleic acids, such as DNA and RNA, are the organic molecules responsible for carrying genetic information from one generation to the next.

A) Proteins

Proteins play a crucial role in the expression of genetic information, but they do not carry genetic instructions themselves. Instead, they are synthesized based on the information encoded in nucleic acids.

B) Carbohydrates

Carbohydrates serve primarily as energy sources and structural components in cells. They do not have a role in carrying genetic information and are not involved in the inheritance of traits.

C) Nucleic acids

Nucleic acids, including DNA and RNA, are the molecules that store and transmit genetic information. They are fundamental to the processes of replication and transcription, making them the correct answer to the question.

D) Lipids

Lipids are essential for cellular structure and energy storage, but they do not participate in the transmission of genetic information. Thus, they are not relevant to the context of genetic instructions.

Conclusion

Nucleic acids are the only molecules among the options that directly carry and transmit genetic instructions from one generation to the next. In contrast, proteins, carbohydrates, and lipids serve different biological functions that do not involve the carrying of genetic information, reinforcing the correctness of nucleic acids as the answer.