DNA structure

What does DNA stand for?

• Deoxyribonucleic acid
• Denitrogenous acid
• Deribonucleic acid
• Diribonucleic acid

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond

Tags

NGSS.HS-LS1-1

Which of the following best describes a DNA molecule?

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

Tags

NGSS.HS-LS1-1

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

Tags

NGSS.MS-LS1-2

What are nucleotides composed (made) of?

• Sugar, Phosphate, Nitrogen Base

• Phosphate, Adenine, Nitrogen Base

• Thymine, Adenine, Cytomine

• Phosphate, Nitrogen, Adenine

Which shows the correct complementary nitrogen base pairing for DNA?

• C-A, T-G

• A-G, C-T

• C-G, U-A

• T-A, G-C

What determines the code, or instructions, within a DNA molecule?

• the shape (structure) of the nitrogen bases

• the order (sequence) of the nitrogen bases

• the color of the nitrogen bases

• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

If a DNA strand has 20% adenine, what should be the percentage of thymine?

• 20%

• 30%

• 40%

• 50%

If a DNA strand has 25% guanine, what should be the percentage of cytosine?

• 25%

• 35%

• 45%

• 55%

A strand of DNA has 15% cytosine. How much thymine should it have?

• 30%

• 50%

• 35%

• 15%