Question

which of the following is true about dna?
a dna contains the genetic information that determines the characteristics of an organism.
b dna is involved in the third part of the central dogma.
c dna travels to the cytoplasm.
d dna is made up of a long chain of amino acids.

Explanation:

• Option a: DNA indeed contains the genetic information that determines an organism's characteristics. It is the blueprint for life.
• Option b: The central dogma has three parts: DNA replication (first part), transcription (second part where DNA is used to make RNA), and translation (third part where RNA is used to make proteins). DNA is mainly involved in the first two parts (replication and transcription), not the third part (translation).
• Option c: DNA is located in the nucleus (in eukaryotes). RNA (like mRNA) travels to the cytoplasm for protein - synthesis, not DNA.
• Option d: DNA is made up of nucleotides (each nucleotide has a sugar, a phosphate group, and a nitrogen - containing base). Proteins are made up of a long chain of amino acids.

Answer:

A. DNA contains the genetic information that determines the characteristics of an organism.