NMDCAT Quiz - Chromosome and DNA/Nucleic Acid
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
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:
1
2
3
5
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:
6
4
8
16
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:
17
51
20
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
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