The oils have
Oils have lower melting point (e.g., gingely oil) and hence remain as oil in winters.
Which of the following metabolites are incorrect pairs?
Drug is a medicine or other substance which has a physiological effect when ingested.
And ricin is a carbohydrate- binding protein which is produced in the seeds of the castor oil plant and is highly potent toxin therefore, it is a toxin not a drug.
Double helix model of DNA was proposed by proposed by
Double helix model of DNA was proposed by James Watson and Francis Crick in 1953 based on X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin.
How many subunits are there in human adult haemoglobin?
Proteins human haemoglobin consists of 4 subunits. Two of these are identical toeach other. Hence, two subunits of αα type and two subunits of ββ type together constitute the human haemoglobin (Hb).
The number of substrate molecules changed per minute by a molecule of enzyme is called
The number of substrate molecules changed per minute by a molecule of enzyme is called turn over number. Higher the turn over number more effective is the enzyme.
The diagram represent
The diagram shown is a uracil which is a pyramidine belonging to nitrogen bases.
Number of fatty acid residues found in one molecules of fat is
Fat consists of molecules of fatty acids and molecules of glycerin. Each molecule of fat contain three molecules of fatty acids and one molecule of glycerine3.
Length of DNA with 23 base pairs is
The paired bases are stacked on the inside of the double helix with one base pair is every 3.4 angstrom. Now the distance between 23 base pair are (3.4) ×23 =78.2 angstrom.
The ratio constant for a species is
According to Chargaff's base pair rule, DNA from any cell of an organism should have a 1:1 ratio of pyrimidine and purine bases, that is, the total amount of purines = total amount of pyrimidines. In this, the amount of guanine is equal to the amount of cytosine and the amount of adenine is equal to the amount of thymine. The ratio of A: T = 1 and the ratio of G: C = 1. According to Chargaff's rule, G + C / A + T ratio varies with the species but is constant for a species.
Monoterpene esters called pyrethoids found in flowers and leaves of chrysnthemumare used commercially for making
Monoterpene eaters called pyrethoids found in flowers and leaves of chrysnthemumare used commercially for making insecticides.
Arachidonic acid has
Arachidonic acid has 20 carbon atoms including the carboxyl carbon.
In most fungi the structural polysaccharide of cell wall is ------
In most fungi the structural polysaccharide of cell wall is chitin. In plant cells cell wall is made up of cellulose.
DNA and RNA resemble each other in possessing
Both DNA and RNA consists of polymers of nucleotides. RNA is single stranded but DNA is double stranded. DNA polynucleotide contains thymine but RNA polynucleotide contains uracil.
Which one is not a denaturing factor for protein?
Protein molecules get denatured due to high temperature, very high or low pH and high energy radiation but there is no effect due to high pressure.
The inhibition of enzyme activity by the presence of a chemical that competes with the substrate for binding to the active site of the enzyme is called
Competitive inhibition is interruption of a chemical pathway owing to one chemical substance inhibiting the effect of another by competing with it for binding or bonding.
Which of the following are aromatic amino acids?
Based on number of amino and carboxyl groups, there are acidic (e.g., glutamic acid), basic (lysine) and neutral (valine) amino acids. Similarly, there are aromatic amino acids (tyrosine, phenylalanine, tryptophan).
Which of the following nitrogenous base produces nucleoside only with ribose sugar?
Uracil nitrogenous base is produces nucleoside only with ribose sugar. This nucleoside is present only inside the RNA and absent in DNA.
Base pairs found in 5 turns of DNA spirals are
Each turn of DNA spirals contains 10 base pairs. So, in five turns of DNA total number of Base pair is 5×10=50 base pairs.
Which one is an initiation codon for protein synthesis?
AUG codon is an initiation codon for protein synthesis. This codon code for amino acids methionine.
Select the group of fat soluble vitamins from the followings
Vitamins A, D, E and K are fat soluble but insoluble in water. Vitamin B and C are water soluble vitamins.
Which is the neutral amino acid?
Valine is the neutral amino acid.
The plant cell wall are made up of
Plant cell walls are made of cellulose. Paper made from plant pulp is cellulose.
Molecular formula of haemoglobin is
Option (d) none of these is correct answer.
The chemical formula for haemoglobin is :-
C 29 52 H4664 O 832 N812 S8 Fe4.
A normal level for men and women ranges from 12 to 20 grams per deciliter.
One full turn of DNA strands involves
One full turn of the helical strand would involve ten steps or ten base pairs. The pitch would be 34Å.
Enzymes functional inside the living cells are called
Enzymes functional inside the living cells are called endoenzyme or intracellular enzyme. It function only inside the cell in which it was produced.