AP Biology Nucleic Acids

 In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of

• cytosine

• thymine

• guanine

• uracil

Which of the following is a difference between DNA and RNA?

• DNA is found in the cell while RNA is found in the brain

• DNA is double stranded while RNA is single stranded

• DNA contains Ribose sugar while RNA contains Sucrose sugar

• DNA and RNA are the exact same

How many chromosomes do human cells have?

• 46

• 23

• 2

• 44

Tags

NGSS.HS-LS3-1

The repeating units in both DNA and RNA are called

• hydrogen bonds

• nucleic acids

• nucleotides

• amino acids

The sugar that is in the backbone of DNA is called

• fructose

• ribose

• glucose

• deoxyribose

Nucleotide bases pair in DNA through

• hydrogen bonds between complementary bases

• polar covalent bonds between complementary bases

• sugar bonds between complementary bases

• none of the choices

What nucleotide base does RNA contain that DNA does not?

• adenine (A)

• cytosine (C)

• uracil (U)

• thymine (T)

What unique ability does DNA have because it is double-stranded?

• it serves as genetic material in all viruses

• it can serve as a template for its own copying

• it can move around the cells

• none of the choices

What are the components of a nucleotide?

• pentose sugar and phosphate group

• nitrogenous base, phospahte group, pentose sugar

• nitrogenous base and DNA

• nitrogenous base and pentose sugar

Which ones are purines?

• Adenine and Guanine

• Adenine and Thymine

• Cytosine and Guanine

• Cytosine and Thymine