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2EMT Chapter 25

Total questions: 26

Worksheet time: 17mins

Name
Class
Date
1.

Reorder the following from (1) micro to (4) macromolecule.

a)

Genes

b)

Chromosomes

c)

Histones

d)

Nucleic Acid

1)
2)
3)
4)
2.

Select/Click all the composition of a nucleotide

a)

monosaccharide

b)

base

c)

phosphate

d)

amino acids

3.

What is the name of the molecule?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

e)

Adenine

4.

What is the name of the molecule?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

e)

Adenine

5.

What is the name of the molecule?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

e)

Adenine

6.

What is the name of the molecule?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

e)

Adenine

7.

What is the name of the molecule?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

e)

Adenine

8.

Select/Click all the composition of a nucleoside

a)

sugar

b)

base

c)

phosphate

d)

amino acids

9.

What is the name of the molecule number 10?

a)

Old Okazaki Fragments

b)

Leading Strand

c)

DNA polymerase

d)

DNA gyrase

e)

SSB

10.

What is the name of the molecule number 3?

a)

Primer

b)

Okazaki Fragments

c)

Helicase

d)

SSB

e)

Lagging Strand Template

11.

What is the name of the molecule number 12?

a)

Primer

b)

Okazaki Fragments

c)

Helicase

d)

SSB

e)

DNA gyrase

12.

What is the name of the molecule number 1?

a)

Old Okazaki Fragments

b)

Okazaki Fragments

c)

DNA ligase

d)

DNA polymerase

e)

DNA gyrase

13.

What is the protein dimer that encircles the DNA strand and helps hold the DNA polymerase to the DNA strand?

a)

Old Okazaki Fragments

b)

Okazaki Fragments

c)

DNA ligase

d)

Sliding Clamp

e)

DNA gyrase

14.

What is the name of the molecule number 2?

a)

Old Okazaki Fragments

b)

Okazaki Fragments

c)

DNA ligase

d)

DNA polymerase

e)

DNA gyrase

15.

What is the name of the molecule number 6?

a)

Old Okazaki Fragments

b)

Okazaki Fragments

c)

DNA ligase

d)

DNA polymerase

e)

DNA gyrase

16.

What are the enzymes that unwinds DNA strands ahead of the DNA polymerase?

a)

Old Okazaki Fragments

b)

helicase

c)

DNA ligase

d)

Sliding Clamp

e)

DNA gyrase

17.

Reorder the following procedure in DNA replication

a)

Opening of superstructure of the chromosomes

b)

Relaxation of higher order structures of DNA

c)

Unwinding of double helix

d)

Lining up of DNA nucleotides

e)

Base pairing and ligation

1)
2)
3)
4)
5)
18.

RNA that transports amino acids to the site of protein synthesis

a)

tRNA

b)

mRNA

c)

siRNA

d)

miRNA

e)

cRNA

19.

RNA that affects gene expressions for example knock out genes

a)

tRNA

b)

mRNA

c)

siRNA

d)

miRNA

e)

cRNA

20.

RNA that are involved in activating or silencing specific genes

a)

tRNA

b)

mRNA

c)

lncRNA

d)

miRNA

e)

cRNA

21.

RNA that directs amino acid sequences of proteins

a)

tRNA

b)

mRNA

c)

lncRNA

d)

miRNA

e)

cRNA

22.

Exons are portions of DNA the codes for proteins

a)

True

b)

False

23.

Introns are portions of DNA the codes for proteins

a)

True

b)

False

24.

Polymerase chain reaction is DNA amplification of specific fragments using primers.

a)

True

b)

False

25.

Reorder the following Amplification steps

a)

starting holding time

b)

Denaturation

c)

Annealing

d)

Extension

e)

Repeat Cycle according to experiment

1)
2)
3)
4)
5)
26.

Reorder the BER pathway

a)

Damage recognition

b)

Cleaving of backbone

c)

release of damage site

d)

insertion of corrected fragment

e)

sealing of backbone

1)
2)
3)
4)
5)

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