DNA > Protein Checkpoint

Which of the following complementary base pairs are correct?

• A  - T
• A - G
• T - C
• G - U

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

The enzyme used to separate the double helix into 2 single strands is:

• Helicase
• DNA polymerase III
• Gyrase
• Lipase

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30
• 15
• 20
• 60

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

How many chromosomes does a human have?

• 23
• 22
• 46
• 127