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WorksheetsLesson 41 - Do Now
Total questions: 9
Worksheet time: 10mins
Name
Class
Date
1.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
2.
What are the parts of a DNA nucleotide?
a)
Deoxyribose
b)
Phosphate group
c)
Nitrogenous base
d)
Cholesterol
3.
The chromosomes in a cell are undergoing DNA replication. One of the old strands of DNA is shown bellow. What would be the new complementary strand of DNA?
ATT-CCG-GCT
(a)
4.
What is the function of DNA helicase?
a)
Attach new nucleotides
b)
To unzip the strands of DNA
c)
Remove nucleotides
d)
To perform crossing over
5.
Sometimes, DNA is called "semi-conservative." Why might this be?
a)
The old strand is "conserved" and used to make the new strands
b)
Uracil is "conserved" in that it is only used to make the new strands
c)
ATP is "conserved" via the usage of facilitated diffusion
d)
Ligase is "conserved" in that it is denatured by the process
6.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
7.
A strand of DNA undergoes transcription to create a strand of mRNA. What would be the complementary mRNA strand for the DNA strand bellow?
DNA: TAC-TTC-CAG-ATT
(a)
8.
DNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?
a)
Half of each new DNA is the old DNA
b)
The old strand of DNA was digested, so none
c)
The new DNA is entirely made up of the old DNA
d)
About every sixth base comes from the old DNA
9.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
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