A tortion of chromatin that is condensed only during cell division is
1.Euchromatin
2.Heterochromatin
3.Biochromatin
4.Nucleochromatin
Posted Date:-2021-09-09 04:04:03
A typical human chromosome contains _________ nucleotides in its DNA
1.240 million
2.140 million
3.150 million
4.160 million
Posted Date:-2021-09-09 04:04:03
Acromegaly is caused due to oversecretion of
1.STH
2.TSH
3.ACTH
4.Thyroxin
Posted Date:-2021-09-09 04:04:03
All of the following are similarities between nervous and endocrine system except
1.Produce chemical messengers
2.Release chemical messengers in extracellular space
3.Homestatic in function
4.Having slow but prolonged effects
Posted Date:-2021-09-09 04:04:03
Central dogma is
1.Transfer of information from DNA to mRNA
2.Basic mechanism of reading and expressing genes
3.Transfer of information from RNA to proteins
4.Synthesis of all three types of RNA
Posted Date:-2021-09-09 04:04:03
Chromosome is made of
1.2 chromatids +1 centromere +secondary constriction
2.1 chromated + 1 centromere + primary constriction
3.2 chromatids + 1 centromere + primary constriction
4.2 chromatids + 2 centromere + secondary constriction
Posted Date:-2021-09-09 04:04:03
Chromosomes are composed of
1.40% protein and 60% DNA
2.50% protein and 50% DNA
3.70% protein and 30% DNA
4.60% protein and 40% DNA
Posted Date:-2021-09-09 04:04:03
DNA contains
1.Purines (A and G) pyrimidines (U and (c)
2.Purines (T and (c) pyrimidines (A and G)
3.Purines (A and (c) pyrimidines (U and G)
4.Purines (A and G) pyrimidines (T and (c)
Posted Date:-2021-09-09 04:04:03
DNA has a helical shape with the diameter of
1.3 nm
2.4 nm
3.2 nm
4.5 nm
Posted Date:-2021-09-09 04:04:03
Histones have abundance of amino acids
1.Valine and lysine
2.Arginine and lysine
3.Valine and arginine
4.Histidione and threonine
Posted Date:-2021-09-09 04:04:03
Human cell contains ______ different kinds of tRNA molecules
1.25
2.35
3.45
4.15
Posted Date:-2021-09-09 04:04:03
In DNA
1.A forms two bonds with T
2.G forms three bonds with C
3.A forms three bonds with T
4.Both a and b
Posted Date:-2021-09-09 04:04:03
In eukaryotes newly synthesized mRNA
1.Travels a large distance from nucleus to cytoplasm
2.Is directly released into the cytoplasm
3.Contains a cap and tail
4.Both a and c
Posted Date:-2021-09-09 04:04:03
In mitochondria UGA is/specifies as
1.Stop codon
2.Tryptophan
3.Initiation codon
4.Methionine
Posted Date:-2021-09-09 04:04:03
In prokaryotes there are
1.Three types of DNA polymerases
2.One type of RNA polymerase
3.Three types of RNA polymerase
4.Both a and b
Posted Date:-2021-09-09 04:04:03
In semi-conservative replication
1.Sequence of original duplex is conserved after one round of replication
2.Gererate DNA copies of entirely new molecules
3.Parental DNA become completely dispersed
4.Each strand of daughter molecules will be a mixture of old and new
Posted Date:-2021-09-09 04:04:03
Initiation complex in translation is composed of
1.Ribosome and aminoacyl-tRNA
2.Ribosome and tRNA
3.tRNA and aminoacyl-tRNA
4.None of these
Posted Date:-2021-09-09 04:04:03
Insufficient secretion of iodothyroxine in adults causes
1.Myxedema
2.Cretinism
3.Goiter
4.Exopthalmic goiter
Posted Date:-2021-09-09 04:04:03
Insulin and glucagons are ________ in nature.
1.Protein
2.Amino acid derivative
3.Polypeptide
4.Steroid
Posted Date:-2021-09-09 04:04:03
Methionine is specified by
1.Stop codon
2.AUG
3.Start codon
4.Both b and c
Posted Date:-2021-09-09 04:04:03
Molecular basis of sickle cell anaemia was found by
1.F. Sanger
2.Beadle and Tatum
3.Vernone Ingram
4.Mendal
Posted Date:-2021-09-09 04:04:03
MSH is produced from
1.Anterior pituitary
2.Median pituitary
3.Posterior pituitary
4.None of these
Posted Date:-2021-09-09 04:04:03
Number of pairs of cranial nerves is
1.10
2.11
3.12
4.13
Posted Date:-2021-09-09 04:04:03
Phenylketonuria is due to deficiency of
1.Phenylalnine
2.Phenylalanine hydroxylase
3.Phenylene
4.All of these
Posted Date:-2021-09-09 04:04:03
Point mutations are represented as
1.Presence of an extra chromosome
2.Loss of chromosome
3.Alteration in sequence of DNA nucleotide
4.Insertions and inversion of genes
Posted Date:-2021-09-09 04:04:03
Rate of DNA replication by DNA polymerase is
1.2000 nucleotides / sec
2.1000 nucleotides / sec
3.150 nucleotides / sec
4.1050 nucleotides / sec
Posted Date:-2021-09-09 04:04:03
Receptors for hearing come under heading of
1.Chemical
2.Mechanical
3.Photo
4.Nociceptors
Posted Date:-2021-09-09 04:04:03
Secretin is a hormone produced by
1.Stomach
2.Liver
3.Pancreas
4.Duodenum
Posted Date:-2021-09-09 04:04:03
Sex chromosomes were 1" discovered in
1.Man
2.Pea plant
3.Fruitfly
4.None of these
Posted Date:-2021-09-09 04:04:03
Strand of DNA which is not transcribed is called
1.Antisense
2.Template
3.Coding
4.None of these
Posted Date:-2021-09-09 04:04:03
The length of okazaki fragments in eukayotes is
1.150--250 nucleotides long
2.200-300 nucleotides
3.1000-2000 nucleotdes
4.100-200 nucleotides
Posted Date:-2021-09-09 04:04:03
The sequence of nucleotides that determines the amino acid sequence of a protein is
1.Chromosome
2.DNA
3.RNA
4.Gene
Posted Date:-2021-09-09 04:04:03
The true E.Coli replicating enzyme is
1.DNA polymerase I
2.DNA polymerase II
3.DNA polymerase III
4.All of these
Posted Date:-2021-09-09 04:04:03
Three nucleotide sequence on tRNA that specifies an amino acis is
1.Codon
2.Anticodon
3.Nonsense codon
4.Genetic code
Posted Date:-2021-09-09 04:04:03
Transfer of genetic material from one cell to another that can alter the genetic makeup of recipient cell is called
1.Mutation
2.Transuction
3.Replication
4.Variation
Posted Date:-2021-09-09 04:04:03
Types of behaviour enabling pillbugs to reach moist area is
1.Kinesis
2.Taxes
3.Instinct
4.Learning
Posted Date:-2021-09-09 04:04:03
Value of resting membrane potential is
1.0.03 V
2.0.05 V
3.0.07 V
4.0.09V
Posted Date:-2021-09-09 04:04:03
Which 3 codons are nonsense codons?
1.UAA,UAU,UUA
2.UGA,UAG,UAA
3.UGG,UGA,UAU
4.UGG,UAA,UAG
Posted Date:-2021-09-09 04:04:03
Which is incorrect about nucleosome
1.2 turns of DNA coiled round histones
2.8 histones as acidic proteins
3.200 nucleotides in one nucleosome
4.None of these
Posted Date:-2021-09-09 04:04:03
Which is incorrect?
1.Chromosomes 1st observed by walther Fleming
2.Chromosomal theory of inheritance 1st formulated by Walter Sutton
3.1st evidence of hereditary nature of DNA provided by Friedrich Meischer
4.Sex chromosomes discovered by Thomas Hunt Morgan
Posted Date:-2021-09-09 04:04:03
Which of the following feature is not related to neuron
1.Conduction
2.Regeneration
3.Reflex
4.Movement
Posted Date:-2021-09-09 04:04:03
Which statement is correct?
1.Leading strand elongates away from the replication fork
2.Lagging strand elongates towards the replication fork
3.Lagging strand is constructed discontinuously.
4.Both a and b
Posted Date:-2021-09-09 04:04:03
Who discovered DNA?
1.P.A.Levene
2.Frederick Griffith
3.Friedrich Miescher
4.Rosalind Franklin
Posted Date:-2021-09-09 04:04:03
_______ is simplest form of learning.
1.Imprinting
2.Habituation
3.Insight learning
4.Latent learning
Posted Date:-2021-09-09 04:04:03
_________ was first to propose an objective definition of instinct.
1.Thorpe
2.Darwin
3.Pavlov
4.Kohler
Posted Date:-2021-09-09 04:04:03