Question { 10672 }

what are the constituents of human semen?

Answer

There are one prostate gland ,one pair of seminal
vesicles,one pair of cowper's glands are present along with
human male reproductive system.The secretions of all these
glands is called semen.It is a nutritive fluid in which
sperms move freely and provides nutrients to the developing
sperms and also makes the sperms alive in female body for
about 24-72 hours.

Question { 4200 }

what r the two hormones secreted by adrenal medulla?

Answer

Adrenal medulla secretes two hormones namely epinephrine or
adrenaline(C9H13O3N) and norepinephrine or
noradrenaline(C8H11O3N).

Question { 4096 }

what are the genetic defects in urea cycle?

Answer

A blockage of carbamoyl phosphate synthesis or any of the 4
steps of urea cycle has serious consequences because there
is no alternate pathway for synthesis of urea.
They all lead to an elevated level of NH4 ion in blood
(HYPER AMMONEMIA)SOME OF GENETIC DEFECTS BECOME EVIDENT
AFTER A DAY OR TWO AFTER BIRTH.
infant becomes lethargic and becomes periodically.
High levels of NH4 ion are toxic because elevated levels of
glutamine lead directly to brain damage.
alpha -ketoglutarate-.glutamate->glutamine
people cannot tolerate protein rich diet because aminoacids
ingested in excess would be deaminated in liver producing
free ammonia in blood which is toxic to humans.
people with defects in urea cycle treated by substituting
in diet alpha-keto acid analogues of essential aminoacids.

Question { 4309 }

What is the product formed when aminoacid reacts with
benzaldehyde?

Answer

When aminoacid reacts with benzaldehyde schiff's bases are
formed.

R-CH-COOH
NH H+HO-N=O -> R-CH-COOH
N=HC-C6H5 (SCHIFF'S BASE)+ H2O

Question { 5991 }

which disease occurs due to the deficiency of vitamin
"D"?what r its symptoms?

Answer

Rickets is the disease which is occuring due to the
deficiency of vitamin "D".

Its symptoms are deformed leg,pelvis and bones will lose
their strength due to the deficiency of "D".
This vitamin is otherwise called as sunshine vitamin,because
we can get this vitamin directly from sunlight.

Question { 6406 }

what happens when aminoacid reacts with edman reagent?

Answer

Phenyl isothiocyanate also reacts with aminoacids to produce
thiohydantoic acid.on treatment with acids in nonhydroxylic
solvents later cyclise to thiohydantoin.
this reaction has proved useful in the studies of protein
structure.

Question { 5463 }

How do u caluculate the distance travelled by a particular
component of a mixture?

Answer

In chromatography the distance travelled by a particular
component of a mixture is
The ratio of the distance travelled by a component to that
travelled by the solvent front both measured from the
marked point of application of the mixture is called
RESOLUTION FRONT(RF) value for that component.


RF=DISTANCE FROM ORIGIN RUN BY THE COMPOUND/DISTANCE FROM
ORIGIN RUN BY THE SOLVENT

Question { 5508 }

what is albinism?

Answer

Inborn error associated with phenyl alanine and tyrosine
metabolism is albinism,an autosomal recessive trait.
This involves defect in melanin production for which
tyrosine is precursor.
one type of albinism is believed to be due to a deficiency
of tyrosinase a copper containing enzyme needed for melanin
synthesis.

Question { 4212 }

what is Signal Recognition Particle?

Answer

sIGNAL SEQUENCE AND RIBOSOME DURING protein degradation are
rapidly bounded by a large rod shaped complex called SIGNAL
RECOGNITION PARTICLE.this binding event halts elongation and
signal sequence has completly emerged from the ribosome.

Question { 7691 }

what is the difference between Dowex-1 and Dowex-50 which
are used in ion exchange chromatography?

Answer

ION exchange chromatography is in wide use for seperation of
aminoacids.
it employs resins such as strongly acidic cation
exchanger,dowex-50 and a strongly basic anion exchanger dowex-1.
former is polysterene sulfonic acid and latter a polysterene
quartenary ammonium salt.

Question { Matrix, 4943 }

How to caluculate the luminous efficiency?

Answer

Total luminous flux per unit radiant flux is called luminous
efficiency.

Luminous efficiency=total luminous efficiency/total radiant
flux.

Question { Matrix, 5582 }

what is doppler effect?

Answer

The frequency observed may be different from the frequency
of the source.This apparent change in frequency of the
source.this apparent change in frequency of wave due to
motion of source or observer is called doppler effect.

Question { Reddy Labs, 10679 }

what are anaplerotic pathways?

Answer

tHE TERMINAL STAGES OF CATABOLISM LEAD TO COMPLETE REMOVAL
OF MOST METABOLITES FROM COMMON PATHWAYS IN THE FORM OF CO2
PLUS NH4+.ANABOLISM ALSO PROVIDES A CONSTANT DRAIN ON THE
POOLS OF INTERMEDIATE OF COMMON PATHWAYS.PROVISION MUST BE
MADE FOR THEIR REPLENISHMENT BY SOME SUBORDINATE ROUTES
WHICH ARE TERMED AS ANAPLEROTIC PATHWAYS.

Question { Ranbaxy, 12275 }

what is INFORMOSOME?

Answer

IN Certain eukaryotic cells MRNA DOES NOT ENTER CYTOPLASM
AS A NAKED RNA STRAND BUT OFTEN REMAINS ENCASED BY CERTAIN
PROTEINS.SPIRIN HAS PROPOSED TERM INFORMOSOME FOR MRNA-
PROTEIN COMPLEX.THE PROTEINS BOUND TO INFORMOSOME PROVIDE
STABILITY TO MRNA MOLECULE AND PROTECT IT FROM DEGRADATION.

Question { Manoj Pharma Ltd, 5511 }

which is antiegg injury factor?

Answer

BIOTIN is synonymous to the antiegg injury factor
responsible for the cure of egg white injury induced in rats
and other animals by feeding them with raw egg white.