What do DNA and RNA have in common?

Question

Both DNA and RNA

a. contain the same four types of nitrogen-containing bases. b. cannot both be present in a cell simultaneously.
c. have the same five-carbon sugars.
d. contain phosphate groups.
e. are single-stranded molecules.

Answer 1

They contain phosphate groups in the same position and the composition.

Answer 2

a. contain the same four types of nitrogen-containing bases.
INCORRECT - DNA contains A, G, C, & T, whereas RNA contains A, G, C, & U.
(A-adenine, G-guanine, C-cytosine, T-thymine, U-uracil)

b. cannot both be present in a cell simultaneously.
INCORRECT - DNA serves as a template for creating RNA. DNA is stored in the nucleus of the cell, which is where the RNA is produced. The RNA then moves out of the nucleus into the cytoplasm where it is translated into protein. So the bottom line is that DNA and RNA can and do coexist in cells.

c. have the same five-carbon sugars.
INCORRECT - The sugar that is found in the genetic material is a pentose sugar. Deoxyribose is found in DNA (aka: deoxyribonucleic acid). Ribose is found in RNA (aka: ribonucleic acid. They are very similar sugars, but they differ in the group attached to the second carbon--deoxyribose lacks a hydroxyl group at that position.

d. contain phosphate groups.
CORRECT - both DNA and RNA contain phosphate groups

e. are single-stranded molecules.
INCORRECT - DNA is typically double stranded (in the form of a double helix). RNA is a single-stranded molecule.

Answer 3

I think the answer is d. a is wrong because uracil (in RNA) replaces thymine (in DNA). b is wrong because both DNA and RNA need to be in a cell in order for translation, protein synthesis, etc. to take place. c is wrong because DNA has the sugar "deoxyribose" whereas RNA has "ribose". e is wrong because DNA is double-stranded and RNA is single-stranded.

Answer 4

they both contain phosphate groups. al other choices are wrong.

Answer 5

D

Answer 6

they both have ...NA in their name