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WorksheetsGen BIO: Week 12 DNA hwmk
Total questions: 20
Worksheet time: 24mins
The enzyme that unzips or separates the DNA strands to prepare for replication
helicase
replicase
polymerase
synthase
Which enzyme is responsible for adding nucleotides onto a growing DNA strand?
helicase
DNA Polymerase
Ligase
Primase
The process of DNA replication is called semi-conservative because it results in
none of these
Two DNA molecules. One original molecule and one with two new strands
two exact copies with new strands
two identical molecules, each with 1 original strand and one new.
Which enzyme joins Okazaki fragments together on the lagging strand?
Topoisomerase
Helicase
Polymerase
Ligase
If a strand of DNA reads: 3' A A A T T T C 5' The matching strand would read...
5' T T T A A A G 3'
3' T T T A A A G 5'
5' A A A T T T C 3'
3' U U U A A A G 5'
Which of the following best describes a DNA molecule?
double helix
contains ribose
made of amino acids
contains Uracil
Which letter in the picture below depicts the leading strand in DNA replication?
A
C
B
None of the above
Translation
Transcription
catabolism
Replication
In a molecule of DNA, what holds the two complementary strands of nucleotides together?
phosphodiester bonds
Hydrogen bonds
nucleotide bonds
Phosphate bonds
Which ones are purines?
Adenine and Guanine
Adenine and Thymine
Cytosine and Guanine
Cytosine and Thymine
Which of the following will pair with Adenine?
Guanine
Thymine
Cytosine
Which of the following will pair with Cytosine?
Thymine
Guanine
Adenine
Which 2 molecules form the sides (backbone) of the DNA ladder?
deoxyribose and adenine
deoxyribose and a hydrogen bond
sugar and the nucleus
deoxyribose (sugar) and phosphate
ATG TGA CAG?
