NMDCAT Quiz - Chromosome and DNA/Nucleic Acid

An educational illustration depicting chromosomes and DNA structure, highlighting key components like nucleotides, DNA helices, and chromosomes in a vibrant, informative style.

NMDCAT Chromosome and DNA Quiz

Test your knowledge on chromosomes, DNA, and nucleic acids with our NMDCAT Quiz. This quiz comprises multiple choice questions that cover essential concepts needed for understanding genetics and molecular biology.

Each question is designed to challenge your comprehension of key topics such as genetic code, mutations, and DNA replication.

Ideal for students preparing for the NMDCAT
Engaging and informative
Assess your understanding of vital biological principles

35 Questions9 MinutesCreated by StudyingCell12

1-A chromosome with unequal length of its arms is called:

Metacentric

Sub-metacentric

Acrocentric

Telocentric

2-In Hershey and Chase experiment 32P labeled bacteriophages alllowed to infect the bacteria.During analysis 32P activity was detected:

In culture medium

On the surface of bacterial cell

Inside the bacterial cell

Both the surface and inside of bacterial cell

3-In Meselson and Stahl experiment, the DNA from sample at 20 minutes, after start of experiment (labeling) made sediments at the:

Top

Intermediate

Bottom

Top and intermediate

4-Sickle cell anemia is the example of ........ Type of mutation.

Transposition

Deletion

Insertion

Base substitution

5-Stop codon:

UGG

UGC

UAG

UGU

6-In Mitochondria UGA codon act to specify ............ Instead of stop codon.

Argenine

Valine

Glutamic acid

Trytophan

7-If the amount of adenine in DNA of a bacterial cell is 36 % of the total nitrogenous bases. What will be amount of guanine in the DNA of a cell in next generation:

14%

28%

36%

64%

8-If a mRNA is synthesized with all the different codons, what is the minimum number of amino acids in the protein that is formed by mRNA:

64 a.a

62 a.a

60 a.a

61 a.a

9-In eukaryotic mRNA molecule there are 90 nucleotide in in translation process. What is the number of amino acid in the protein formed by mRNA molecule:

29 a.a

30 a.a

45 a.a

90 a.a

10-The complementary mRNA triplet for the DNA triplet "GAT" would read:

CAT

CUA

CTG

TAG

11-The two Pyrimidine bases most commonly found in DNA are:

Cytosine and thiamine

Cytosine and uracil

Adenine and thymine

Cytosine and thymine

12-In a nucleotide, the phosphate group is attached to the sugar at carbon number:

13-It has been established that, in many cells, ribosomes occur in chains along mRNA molecules. What is the advantage of this arrangement when compared with a situation in which ribosomes occur singly:

A greater variety of polypeptides can be produced

Fewer tRNA molecules aree used in protein synthesis

Large no. Of polypeptides can be produced

Polypeptides can be produced more rapidly

14-A synthetic mRNA molecule is made by using only two types of nucleotide, containing adenine and cytosine. How many different codons could it contains:

15-A protein includes 17 of the 20 different amino acids commonly occuring in proteins, what is the minimum number of different kinds of tRNA molecules involved in the synthesis of this protein:

102

16-What is the action of the enzyme DNA ligase?

DNA is broken up at specific sites

DNA fragments are joined together

DNA replication occur

DNA transcription occur

17-During DNA replication, lagging strand is formed by:

P I

P II

PIII

All of these

18-Genetic code for Glycine:

GGU

UAG

UGA

AUG

19-RNA polymerases in Prokaryotes are of:

One type

Two type

Four type

Three type

20-In RNA nucleotides are attached by:

Peptide bonds

Phosphodiester bond

Hydrogen bond

Covalent bond

21-Most amino acids are identified by:

One codon

More than one codon

Two codons

Three codons

22-The basic unit of heredity is:

DNA

REPLICATION

CODON

GENE

23-Okazaki fragments are formed in:

Leading strand

Lagging strand

Transcription

Translation

24-The addition of few bases in a gene is:

Point mutation

Transposition

Deletion

Insertion

25-The tail of mRNA of Eukaryotic cells is protected by:

Poly A

7 Methyl GTP

Four or more U

7 Methyl ATP

26-Each Okazaki fragment is synthesized by:

P I

P II

P III

Primase

27-Down's syndrome is due to:

An extra X chromosome

An extra autosome

A missing X chromosome

A missing autosome

28-Gene action in Neurospora was studied by:

Beadle and Beast

Beadle and Tautum

Baddle and Tautum

Banting and Tautum

29-One Gene-One Enzyme explanation was given by:

Morgans and Muller

Beadle and Best

Beadle and Tautum

Banting and Tautum

30-The basic monomers used in DNA replication are:

Glucose

DNA nucleotides

Fatty acids

Amino acids

31-At the time of DNA replication, the primer is recognized by:

DNA polymerase I

DNA polymerase II

DNA polymerase III

ANY OF THEM

32-During Translation, peptide bond is formed in the initiation complex of ribosome at:

P site

A site

E site

Any of them

33-Garrod investigated that in the disease Alkaptonuria, the patient produces urine containing

Uric acid

Gentisic acid

Homo gentisic acid

Heterogentesic acid

34-The length of a strand of DNA from a single human chromosome is about:

5 micrometer

5 mm

5 cm

5nanometer

35-In phosphodiester, phosphate is linked to two sugars by means of a pair of ester bonds which are:

P-O-C

C-O-C

N-H

C-N

NMDCAT Quiz - Chromosome and DNA/Nucleic Acid

NMDCAT Chromosome and DNA Quiz

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