DNA Structure, History and Replication

DNA Structure, History and Replication

Quiz Game Check!

Multiple Choice

What is the backbone of this DNA molecule made of?

• sugars

• nitrogen bases

• sugar and phosphate

• sugar and nitrogen bases

Multiple Choice

Rosanlind Franklin's x-ray diffraction image of her study of DNA was noticed by Watson and Crick and led them to model what they thought the shape and structure of DNA was. What was that shape?

• the double helix

• the single strand

• the sugar and phosphate

• the four nitrogen bases

Multiple Choice

Erwin Chargaff's rule of base pairing states that:

• adenine pairs with thymine and guanine pairs with cytosine

• adenine pairs with guanine and thymine pairs with cytosine

• purines pair with pyrimidines

• pyrimidines pair only with pyrimidines

Multiple Choice

According to the semi-conservative model, the original strand serves as a template for the construction of the new strand during DNA replication.

• True
• False

Multiple Choice

If the original sequence is CGA TTA AGC, what would be the complementary nucleotides added during DNA replication?

• GCU AAU UCG
• GCT AAT TCG
• ATC GGC CTA
• CGA ATT AGC

Multiple Choice

DNA replication produces ___ molecules of DNA.

• 2 Identical

• 2 Different

• 4 Identical

• 4 Different

Multiple Choice

According to the semi-conservative model of DNA replication, two DNA molecules result, ___.

• Each strand with one new strand and one original strand
• Each with two new strands
• One with two new strands and one with both original strands
• Each with two original strands

Multiple Choice

The enzyme that constructs the new strand of DNA during replication is known as...

• DNA Helicase
• DNA Polymerase
• DNA Ligase
• RNA Polymerase

Multiple Choice

The process of DNA replication occurs in which organelle?

• Cytoplasm
• Ribosome
• Nucleus
• Mitochondria

Multiple Choice

By using radioactive isotopes, Hershey and Chase were able to conclude that __ is/are the carrier(s) of genetic information.

• DNA
• Proteins
• Carbohydrates
• Lipids

Multiple Choice

The work of scientists including Griffin, Avery, Hershey & Chase and Franklin helped us to determine the __ are responsible for carrying genetic material.

• Amino Acids
• Proteins
• Nucleic Acids
• Carbohydrates

Multiple Choice

Who developed the general model of DNA that we use today?

• Rosiland Franklin

• Watson & Crick

• Eli Whitney

• Robert Oppenheimer

Multiple Choice

Who took X-Ray Crystallography images of DNA that helped to determine its shape and size?

• Rosiland Franklin

• Watson & Crick

• Eli Whitney

• Robert Oppenheimer

Multiple Choice

Replication is the process by which

• DNA makes copies of itself

• RNA makes copies of itself

• DNA makes proteins

• The Borg reproduce

Multiple Choice

Which of the following is a correct base pair in DNA?

• A-G

• A-C

• C-T

• T-A

• G-T

Multiple Select

Check all of the below that are Nitrogen Bases in DNA.

• Adenine

• Guanine

• Cytosine

• Thymine

• Thimosine

Multiple Choice

The function of DNA is to provide instructions for making proteins and thus run your body.

• True

• False

Multiple Choice

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

• ribose sugar

• deoxyribose sugar

• nitrogen base

• phosphate group

Multiple Choice

What enzyme unzips the DNA strands to allow replication to occur?

• polymerase

• ligase

• helicase

• primase

Multiple Choice

Using the bases on the template strand of DNA, what are the new complimentary bases for replication? Template: AGTCA

• AGTCA

• TCAGT

• UCAGU

• TCUGT

Multiple Choice

What type of bonds hold together nitrogen bases?

• water bonds

• covalent bonds

• peptide bonds

• hydrogen bonds