Questions: Which of these are true about DNA? (check all that apply) it's usually double stranded it codes the information for proteins it has deoxyribose as the sugar

The true statements about DNA are:

• It's usually double stranded: DNA typically exists as a double helix, consisting of two strands that are complementary to each other.

• It codes the information for proteins: DNA contains the genetic instructions used in the development and functioning of all known living organisms and many viruses, primarily by coding for proteins.

• It has deoxyribose as the sugar: The sugar in the backbone of DNA is deoxyribose, which is a five-carbon sugar molecule.

Explanation for each option:

• It transfers information from the nucleus to the ribosome: This statement is incorrect. The transfer of information from the nucleus to the ribosome is primarily carried out by messenger RNA (mRNA), not DNA. DNA remains in the nucleus.

• It's usually double stranded: This is correct. DNA is typically found in a double-stranded form, known as the double helix.

• It codes the information for proteins: This is correct. DNA contains the genetic code that is transcribed into mRNA, which is then translated into proteins.

• It has deoxyribose as the sugar: This is correct. The sugar in DNA is deoxyribose, distinguishing it from RNA, which contains ribose.

• It uses Uracil as one of its four bases: This statement is incorrect. DNA uses adenine (A), thymine (T), cytosine (C), and guanine (G) as its four bases. Uracil (U) is found in RNA, not DNA.

In summary, the true statements about DNA are that it is usually double stranded, it codes the information for proteins, and it has deoxyribose as the sugar.