DNA & Protein Synthesis

What combines with sugar and phosphate group to form a nucleotide?

• Amino Acid
• Deoxyribose
• Glycerol
• Nitrogen Base

All of the following are true about the structure of DNA Except

• strands of DNA are contained inside the nucleus of the cell.
• every DNA nucleotide contains a sugar, phosphate, and a base.
• DNA consists of three strands of nucleotides joined by hydrogen bonds.
• the long strands of nucleotides are twisted into a double helix.

Which of the following is NOT part of a molecule of DNA?

• deoxyribose
• nitrogen base
• phosphate group
• ribose

The subunit shown in the diagram is called a(n)

• amino acid.
• nucleotide.
• polysaccharide.
• pyrimidine.

The base-pairing rules state that the following are base pairs in DNA:

• adenine-thymine; uracil-cytosine
• adenine-thymine; guanine-cytosine
• adenine-guanine; thymine-cytosine
• uracil-thymine; guanine-cytosine

Watson and Crick built models that demonstrated that

• DNA and RNA have the same structure.
• DNA is made of two chains of nucleotides in a double helix.
• guanine forms hydrogen bonds with adenine.
• thymine forms hydrogen bonds with cytosine.

The sides of the DNA molecule (backbone) are made of which two components?

• phosphate and ribose sugar
• deoxyribose molecules and ribose sugar
• phosphate and deoxyribose sugar
• deoxyphosphate and deoxyribose sugar

adenine : thymine::

• guanine : cytosine
• protein : DNA
• guanine : thymine
• Watson : Crick

Which of the following is NOT found in RNA?

• Adenine
• Thymine
• Uracil
• Cytosine

DNA has __ strand(s) of nucleotides, whereas RNA has __ strand(s) of nucleotides.

• 2, 1
• 2, 4
• 1, 2
• 4, 2