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final res enz

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Retriction enzymes bind to DNA in which form

a)

monomer

b)

dimer

c)

trimer

d)

none

2.

Restriction enzyme cut the sugar phosphate backbone by mechanism of

a)

phosphorylation

b)

hydrolysis

c)

esterification

d)

catenation

3.

isoschizomers are different restriction enzyme with

a)

same recognition site and same cleavage point

b)

same recognition site and different cleavage point

c)

both

d)

none

4.

Sma I is a

a)

blunt end cutter

b)

cohesive end cutter

c)

both

d)

none

5.

restriction enzyme require as a co factor

a)

Zn

b)

Ca

c)

Mg

d)

Mn

6.

neoschizomers are restiction enzymes with

a)

same recognition and cleavage site

b)

same recognition but different cleavage site

c)

different recognition and different cleavage site

d)

none

7.

for cloning a DNA fragment into a vector both should be cut ideally with

a)

same restriction enzyme

b)

different restriction enzyme

c)

both

d)

none

8.

Restriction enzymes are part of

a)

phosphorylase enzyme system

b)

Restriction modification system

c)

All of the above

d)

None of the above

9.

Type of restriction enzyme used in gene cloning

a)

Type 1

b)

Type 2

c)

Type 3

d)

None

10.

In EcoRI R stands for

a)

Species

b)

Genus

c)

Strain

d)

None

11.

Type 2 restriction enzyme cuts

a)

Far away from the site

b)

Within the site

c)

Near the site

d)

None

12.

Restriction enzyme cleave the

a)

Hydrogen bond

b)

Phospho-diester bond

c)

Both

d)

None

13.

Bam HI is

a)

Cohesive cutter

b)

blunt end cutter

c)

Both

d)

None

14.

ligation is easy to perform with DNA having what type of end

a)

blunt end

b)

cohesive end

c)

both

d)

none

15.

Bam HI and Sau3A1 are

a)

neoschizomers

b)

isoschizomers

c)

both

d)

none