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BIOCHEM LAST QUIZ n.A.

Total questions: 50

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Person that Discovered Nucleic acid

a)

Friedrich Miescher

b)

James Watsons

c)

Francis Crick

d)

John Dalton

2.

What is the Nitrogenous Base with an IUPAC name of 4-amino-oxopyrimidine

a)

Thymine

b)

uracil

c)

Cytosine

d)

Adenine

3.

Which among these is NOT a function of Nucleic Acid?

a)

Create information

b)

Encode Information

c)

Study Information

d)

Store Information

4.

Which Among these is NOT a function of Nucleic Acid?

a)

Thymine

b)

Cytosine

c)

Uracil

d)

AOTA

5.

The two-sub unit molecule in which a pentose sugar is bonded to a nitrogen Containing hetero-cyclic base

a)

Nucleus

b)

Nucleotide

c)

Nucleolus

d)

Nucleoside

6.

DNA EXCEPT:

a)

N-BAse

b)

Deoxyribose

c)

Ribose

d)

Phosphate group

7.

Which of these does not belong to Pyrimidine bases?

a)

Guanine

b)

Thymine

c)

Cytosine

d)

Uracil

8.

This N-base is specific only to RNA

a)

Cytosine

b)

Thymine

c)

Uracil

d)

Guanine

9.

What is NOT part of nucleic acid Backbone

a)

Phosphate

b)

N-Base

c)

Sugar

d)

AOTA

10.

If secondary protein structure is B-plated sheets, then secondary structure of nucleic acid is?

a)

RNA pair pin

b)

Alpha Helix

c)

Double Helix

d)

AOTA

11.

How many chromosomal homologous pairs does an average humans have?

a)

78

b)

46

c)

23

d)

82

12.

What is the complementary strand of A-T-A-T-G-C-G-G-G?

a)

T-A-T-A-C-G-C-C-C

b)

A-T-A-T-C-G-C-C-C

c)

G-G-G-C-G-T-A-T-A

d)

C-C-C-G-C-A-T-A-T

13.

At what part of the tRNA structure does amino acid bind to?

a)

5' end

b)

3'end

c)

The loop of opposite to the open end

d)

Left and right loops of Cloverleaf structure

14.

Given the Anticodon 3'UGG 5'm what is the mRNA codon?

a)

GGU

b)

UCC

c)

ACC

d)

AGG

15.

Given the anticodon 3' AAG-AGU-UUA 5', What amino acid does its codes for

a)

Val-Gly-His

b)

Ser-Phe-Asp

c)

Phe-Ser-Asn

d)

Leu-Tyr-Lys

16.

This enzyme allows amino acid link the amino acid on the P-site to the A-sitel

a)

Peptidyl Transferase

b)

Amino acyl tRNA synthetase

c)

RNA Polymerase

d)

DNA helicase

17.

All of these are stop codons EXCEPT;

a)

UAG

b)

UAA

c)

AUG

d)

UGA

18.

What is this type of point mutation if the mutated mRNA codon is AAA instead of AAG.

a)

Silent

b)

Conservative

c)

Non-Conservative

d)

Nonsense

19.

All of these are potential Mutagens EXCEPT

a)

x-ray

b)

HNO2

c)

UV light

d)

None of the given Choices

20.

A method for rapidly producing multiple copies of DNA nucleotide sequence.

a)

Recombinant DNA

b)

Polymerase Chain Reaction

c)

DNA printing

d)

Transformation

21.

These are strands of DNA in a double helix with base pairing such that each base is located opposite its complementary base:

a)

Complementary Strand

b)

Template strand

c)

Complementary Base

d)

Nucleotide

22.

What is the N-base with an IUPAC name of 4-amino-2-oxo pyrimidine?

a)

Thymine

b)

Uracil

c)

Cytosine

d)

Adenine

23.

Which among these is NOT a function of Nucleic acid?

a)

Create Information

b)

Encode Information

c)

Study Information

d)

Store Information

24.

Which among these N-bases are “single-ring”?

a)

Thymine

b)

Cytosine

c)

Uracil

d)

All of the Choices

25.

This is a two-subunit molecule in which a pentose sugar is bonded to a nitrogen containing heterocyclic base:

a)

Nucleus

b)

Nucleutide

c)

Nucleolus

d)

Nucleoside

26.

DNA, EXCEPT:

a)

N-Base

b)

Deoxyribose

c)

Ribose

d)

Phosphate group

27.

Which of these does not belong to the group of pyrimidine bases?

a)

Guanine

b)

Thymine

c)

Cytosine

d)

Uracil

28.

This N—base is specific only to RNA:

a)

Cytosine

b)

Thymine

c)

Uracil

d)

Guanine

29.

What do you call this nucleoside: Ribose-adenine?

a)

Adenoside

b)

Deoxyadenosine

c)

Adenosine

d)

Deoxyadenoside

30.

What do you call the nucleoside of RNA adenine?

a)

Adenoside

b)

Adenose

c)

Adenosine

d)

Deoxyadenosine

31.

If secondary protein structure is B-plated sheets, then, secondary structure of nucleic acids is?

a)

RNA Hair pin

b)

Alpha Helix

c)

Double Helix

d)

Helicase

32.

Which RNA functions inside the nucleus?

a)

hnRNA

b)

snRNA

c)

mRNA

d)

All of these Choices

33.

Which among these is NOT a potential base pair?

a)

A-C

b)

G-A

c)

A-T

d)

G-C

34.

How many chromosomal homologous pairs does an average human have?

a)

78

b)

46

c)

23

d)

82

35.

These are the spaces between Okazaki fragments

a)

Oka

b)

Nicks

c)

Break

d)

Lags

36.

Responsible for both the unwinding of a portion of the double helix and also the linkage of ribonucleotides to the growing hnRNA molecule?

a)

DNA polymerase

b)

RNA polymerase

c)

DNA Helicase

d)

dna LIGASE

37.

What is the type of bond that connects 2 base pairs

a)

Ether Bond

b)

Ester Bond

c)

H-Bond

d)

Covalent Bond

38.

What does it mean for a DNA to be anti-parallel?

a)

The 5’ meets with 3’ of its complementary strand

b)

Complementary strand has both 5’ at the same end and 3’ at the other.

c)

There is a 5’ end and a 3’ end at both ends of the double helix

d)

The two strands of a double helix is not complementary

39.

What is the complementary strand of A-T-A-T-G-C-G-G-G?

a)

T-A-T-A-C-G-C-C-C

b)

A-T-A-T-C-G-C-C-C

c)

G-G-G-C-G-T-A-T-A

d)

C-C-C-G-C-A-T-A-T

40.

Considering each codon is composed of 3 nucleotide sequence, how many possible codons can be used to uniquely specify all standard amino acids?

a)

4

b)

64

c)

16

d)

46

41.

At what part of the tRNA structure does an amino acid bind to?

a)

5' End

b)

3' End

c)

The loop Opposite to the open End

d)

Left and Right Loops of the Clover leaf structure

42.

Given the anticodon, 3’ UGG 5’, what is the mRNA codon?

a)

GGu

b)

UCC

c)

ACC

d)

AGG

43.

Given the anticodon, 3’AAG- AGU-UUA 5’, what amino acid does it codes for?

a)

Val-Gly-His

b)

Ser-Phe-Asp

c)

Phe-Ser-Asn

d)

Leu-Tyr-Lys

44.

Which among these best describes a virus?

a)

All Viruses contains both DNA and RNA

b)

Viruses need to invade other cells to reproduce

c)

They generate energy

d)

Infections caused by viruses are rather easier to treat than bacterial infections

45.

This enzyme allows amino acid to link the amino acid on the P-site to the A-site :

a)

Peptidyl transferase

b)

Amino Acyl tRNA synthetase

c)

RNA polymerase

d)

DNA helicase

46.

All of these are stop codons, EXCEPT

a)

UAG

b)

UAA

c)

AUG

d)

UGA

47.

What is this type of point mutation if the mutated mRNA codon is AAA instead of AAG, thus leading to a production of amino acid Lys instead of the normal amino acid Lys?

a)

Silent

b)

Missense (conservative)

c)

Missense (Non-Conservative)

d)

Nonsense

48.

This mutation refers to the removal of a piece of DNA

a)

Point

b)

Deletion

c)

Dupplication

d)

Frameshift

49.

This is a method for rapidly producing multiple copies of a DNA nucleotide sequence

a)

Recombinant DNA

b)

Polymerase Chain Reaction

c)

DNA Fingerprint

d)

Transformation

50.

AIDS is caused by what type of virus?

a)

Retrovirus

b)

Togavirus

c)

Picornavirus

d)

Parvovirus

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