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Review Partial Exam I

Total questions: 38

Worksheet time: 29mins

Name
Class
Date
1.
Which enzyme seals okazaki fragments together on the lagging strand?
a)
Topoisomerase
b)
Helicase
c)
Polymerase
d)
Ligase
2.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
3.
What is A?
a)
Leading strand
b)
Lagging strand
c)
Okazaki Fragments
d)
DNA plymerase
4.
What strand is copied faster?
a)
Leading
b)
Lagging
5.

What are the DIFFERENCES between purine and pyrimidine? (Select 2)

a)

Purine is more purified than pyrimidine

b)

None, they are identical

c)

Purine consist of two rings fused together, while pyrimidine is only one ring

d)

They both contain lots of nitrogen

6.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
7.
The new DNA on the leading strand is synthesized in the _________ direction
a)
5' to 3'
b)
3' to 5'
8.

DNA is wrapped around spool like proteins called

a)

hormones

b)

chemicals

c)

Histones

d)

enzymes

9.

What way does the LAGGING STAND go?

a)

5' to 3'

b)

3' to 5'

c)

The Oregon Trail

d)

4' to 6'

10.

Which of the following is true?

a)

DNA replication is semi conservative

b)

DNA repliction is conservative

c)

DNA replication is progressive

d)

DNA replication is dispersive

11.

What makes up the DNA Backbone?

a)

Bonded Sugar and Phosphate

b)

A Spine

c)

Bonded Base Pairs

d)

A Full Nuceotide

12.

What is the purpose of PRIMASE

a)

To "unzip" the DNA

b)

To create RNA Primer

c)

Absolutely nothing at all

d)

To repair the parental strand

13.

Most bacteria have___________ DNA

a)

linear

b)

Specific

c)

rigid

d)

Circular

14.
The haploid number of human chromosomes is
a)
11
b)
12
c)
23
d)
46
15.
How many DNA molecules make up a chromosome?
a)
1
b)
2
c)
23
d)
46
16.
Each identical side of a chromosome is the 
a)
centromere
b)
chromatin
c)
centriole
d)
chromatid
17.
The structure that holds two chromosomes together until they separate for cell division is the
a)
chromatid
b)
chromatin
c)
centromere
d)
cytoplasm
18.
Which of the following must happen first in order for DNA replication to occur?
a)
DNA polymerase binds to the leading strand
b)
DNA is unwound
c)
Hydrogen bonds form between bases
d)
chromosomes condense
19.

p arm is the longer arm

a)

True

b)

False

20.

Where does Transcription take place?

a)

Inside the nucleus

b)

Inside the cytoplasm

c)

Inside the Ribosome

d)

Inside the Rough ER

21.

During protein synthesis, an RNA strand is transcribed from one strand of DNA (GCG TTA CCT) What is the complementary RNA strand?

a)

CGC UUT CCT

b)

CGC AAU GGA

c)

GCG UUA CCU

d)

CGC AAT GGA

22.

Which enzyme creates the new mRNA polyer by adding the complementary free RNA nucleotides?

a)

RNA polymerase

b)

DNA polymerase

c)

Exonuclease

d)

DNA Helicase

23.

Which type of RNA is synthesized during transcription?

a)

messenger RNA (mRNA)

b)

transfer RNA (tRNA)

c)

ribosomal RNA (rRNA)

d)

small nuclear RNA (snRNA)

24.
tRNA molecules match the mRNA codons with a(n):
a)
Codon
b)
Anti-Codon
c)
Intron
d)
Methylated Cap
25.
A protein that binds to the operator and blocks the RNA polymerase
a)
regulator
b)
repressor
c)
activator
d)
corepressor
26.
tRNA is involved in
a)
carrying amino acids 
b)
carrying ribosomes
c)
carrying glucose
d)
carrying lipids
27.
What would be the tRNA anticodon for the mRNA codon CAG?
a)
GTC
b)
GUC
c)
CUG
d)
CAG
28.

Which types of cells can begin the process of translation even before the mRNA has been completely transcribed?  

a)

Eukaryotes

b)

Prokaryotes

c)

Both Prokaryotes and Eukaryotes can

d)

No cells can can do this

29.

Which of the following is not a structural gene?

a)

lac z

b)

lac y

c)

lac a

d)

lac I

30.
How many amino acids are coded for by this sequence of nucleotides:
ATG GGA ACT CCA
a)
4
b)
2
c)
6
d)
12
31.
Which of the following occurs first in translation?
a)
The small ribosomal subunit binds to mRNA
b)
The large ribosomal subunit binds to mRNA
c)
tRNA binds to the mRNA
d)
A peptide bond forms between amino acids
32.

TBP is the abbreviation for_________

a)

TATA-Box bending protein

b)

Transcription factor II B

c)

TATA-box binding protein

d)

Transformation bending protein

33.

Has Heicase activity

a)

TFIIB

b)

TFIIC

c)

TFIIF

d)

TFIIH

34.

What type of molecule are transcription factors?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

35.
Translation is a process that produces
a)
mRNA
b)
Protein
c)
Polypeptide Chains
d)
tRNA
36.

In the lac operon the inducer is

a)

allolactose

b)

glucose

c)

galactose

d)

all of the above

37.
The "on/off" switch for an operon is called the
a)
promoter
b)
repressor
c)
operator
d)
gene
38.
The lac operon genes only become expressed if:
a)
lactose binds to the repressor
b)
glucose binds to the repressor
c)
lactose binds to the operator
d)
the repressor binds to the operator

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