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DNA Structure
Base-Pairing
DNA Replication
Basic information
Interphases
100

What kind of macromolecule is DNA? A. Protein B. Carbohydrate C. Enzyme D. Nucleic acid E. Lipid

D. Nucleic acid

100

What base pairs up with adenine (A)?

Thymine/T

100

DNA replication produces daughter strands that are _____________________ the original strand. A. identical to B. similar to C. different from

A. identical to

100

What are the complementary base pairs?

Adenine pairs with Thymine; Cytosine pairs with Guanine

100

What were the names of the two men that discovered the structure of the DNA molecule and what year was this discovered?

Watson & Crick in 1953

200

DNA is made up of monomers called _________________

nucleotides

200

What base does guanine (G) pair up with?

Cytosine (C)

200
What kind of DNA replication actually occurs? A. Conservative B. Semi-conservative C. Dispersive
Semi-conservative replication
200

One side of a DNA strand has the following sequence. What is the complimentary sequence found on the opposite side? ATTCCG

TAAGGC

200

What are the building blocks (monomers) that compose DNA & RNA?

Nucleotides

300

DNA looks like a twisted ladder. Its shape is called ______________________.

double helix

300

If a sample is DNA is 38% cytosine (C), what percent adenine (A) is it?

12%

300
Which of the following is the FIRST step in DNA replication? A. Helicase unzips the double helix B. DNA polymerase proofreads the strand C. DNA polymerase unzips the double helix D. Helicase proofreads the strand
A. Helicase unzips the double helix
300

What makes up the "sides" of the DNA ladder?

Alternating sugar and phosphate units

300

What is the process when DNA copies itself during interphase?

Replication

400

Each nucleotide has three parts. Name them.

Base, sugar, phosphate

400

If a DNA sample is 38% cytosine (C), what percent is guanine (G)?

38%

400
What is a mistake in DNA called?
A mutation
400

An enzyme responsible for the addition of new nucleotides along the daughter strands during replication of DNA

DNA Polymerase

400

A relatively weak bond that forms between the two nitrogen bases holding the two sides of the DNA molecule together is called what?

Hydrogen Bonds

500

What is the name of the sugar in DNA?

deoxyribose

500

Which two bases are purines?

Adenine and guanine

500

What is the name of enzyme responsible for proofreading the final daughter strands?

DNA polymerase

500

A protein that binds unpaired DNA strands during replication, stabilizing them and holding them apart while they serve as templates for the synthesis of daughter strands

Single-strand binding protein

500

Why is it important that there has to be a exact copy of a DNA molecule during replication?

The daughter cells gets an complete and accurate copy of all the genetic material.