AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following best describes the function of DNA?
A
DNA codes for mRNA which determines the properties and traits of an organism.
B
DNA codes for the amino acid sequences of the body’s proteins. Proteins determine the traits of an organism.
C
DNA codes for tRNA which then determines the traits of all organisms.
D
mRNA codes for DNA which then determines the amino acid sequence of the body’s proteins.
Explanation: 

Detailed explanation-1: -The molecule inside cells that contains the genetic information responsible for the development and function of an organism. DNA molecules allow this information to be passed from one generation to the next.

Detailed explanation-2: -The sections of DNA (or RNA) that code for proteins are called exons.

Detailed explanation-3: -genetic code, the sequence of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) that determines the amino acid sequence of proteins. Though the linear sequence of nucleotides in DNA contains the information for protein sequences, proteins are not made directly from DNA.

Detailed explanation-4: -DNA now has three distinct functions-genetics, immunological, and structural-that are widely disparate and variously dependent on the sugar phosphate backbone and the bases.

There is 1 question to complete.