Desc. Bio - Unit 07 - DNA Test Review

DNA is completing replication. Which sequence of DNA bases would pair with this sequence:

ATG TGA

• ATG TGA

• TAC ACT

• GTA AGT

Which of the following best describes a DNA molecule?

• double helix/twisted ladder

• contains RNA

• made of only amino acids

• contains Uracil (U)

Adenine (A) bonds with ______________.

• Guanine (G)

• Thymine (T) and Uracil (U) in RNA

• Cytosine (C)

• Adenine (A)

Guanine (G) bonds with ______________.

• Adenine (A)

• Guanine (G)

• Cytosine (C)

• Thymine (T)

Why is DNA important? (Select all that apply. Hint: there are two!)

• it contains only proteins

• it codes for proteins

• it serves as the blueprint/instructions for traits of all living things

• it is very small and can leave the nucleus to be copied

What determines the code, or information, of 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

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

What are the three parts of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

What is the purpose of DNA replication?

• Cut the DNA

• Make more cells

• Apoptosis

• Duplicate (make a copy of) the DNA