Unit 6 Test: Central Dogma Test Review

A DNA nucleotide is shown below. Four different parts are labeled. Which part of the nucleotide is responsible for the coding of specific proteins and traits?

• Part 1
• Part 2
• Part 3
• Part 4

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Based on the diagram shown to the right AND on your knowledge of DNA structure, structures 3 and 4 are held together by what type of bonds?

• weak peptide bonds
• weak hydrogen bonds
• strong covalent bonds
• strong peptide bonds

Which scientist made a renowned x-ray diffraction photo of DNA, known as photo 51, that was shown to other scientists that were working with DNA at the same time?

• Alfred Hershey and Martha Chase
• Frederick Griffith
• James Watson and Francis Crick
• Rosalind Franklin

How can the percentage of nucleotides be described due to the base pairing rules in DNA?

• adenine molecules in DNA is about equal to the percentage of guanine molecules
• thymine molecules in DNA is about equal to the percentage of adenine molecules
• adenine molecules in DNA is much greater than the percentage of thymine molecules
• cytosine molecules in DNA is much greater than the percentage of guanine molecules

Tags

NGSS.HS-LS1-1

Finish the sentence: Antiparallel configuration means that DNA strands of one helix are…

• Complimentary to one another
• Complexly structured so that both 5’ ends are next to each other and sit opposite the 3’ ends of each strand
• Similar in structure, but the 5’ end of the last base of one strand is opposite the 3’ end of the last base of the complimentary strand
• Often not complimentary, since the structure of one strand is very different from the structure of the opposite strand in the helix

Fill in the blank with the correct word below: The replication of DNA is referred to as ______ because each "new" molecule of DNA consists of one parent and one daughter strand in each.

• semiconservative
• conservative
• nonconservative
• daughter molecule

What enzyme works to build a new DNA strand by adding complementary DNA nucleotides?

• DNA polymerase
• histones
• ligase
• helicase

Finish the sentence: In both prokaryotes and eukaryotes, DNA replication happens...

• during S phase before cell division.
• in the nucleus.
• only to telomeres.
• around the histones.

DNA is replicated so that new daughter cells can be made. How is DNA replicated to ensure that all new daughter cells have the same genetic make up?

• conservative model
• nonconservative model
• semiconservative model
• somewhat conservative

DNA and RNA are both nucleic acids made up of nucleotides. Which statement below does NOT describe the similarities or differences between DNA and RNA?

• Both DNA and RNA contain adenine, thymine, cytosine, and guanine.
• Both DNA and RNA have a sugar-phosphate backbone.
• The sugar in RNA is ribose and the sugar in DNA is deoxyribose.
• DNA is double-stranded and RNA is single stranded.