About 98 percent of the mass of every living organism is composed of just six element including carbon, hydrogen, nitrogen, oxygen,
Options
(a) Sulphur and magnesium (b) Magnesium and sodium (c) calcium and phosphorus […]
Enzymes, which help in electron transfer are
Options
(a) cytochromes (b) proteases (c) isomerases (d) all of these
Correct Answer:
cytochromes
Explanation:
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Chromosome duplication without nuclear division refers to
Options
(a) meiosis (b) mitosis (c) androgenesis (d) endomitosis
Correct Answer:
endomitosis
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Most abundant water insoluble polysaccharide of plant cell wall is
Options
(a) cellulose (b) hemicellulose (c) pectin (d) lignin
Correct Answer:
cellulose
Explanation:
No explanation available. Be the first to write the explanation […]
What is the work of centrosome?
Options
(a) cell division (b) cell differentiation (c) cell plate formation (d) cell wall formation
Correct Answer:
cell division
Explanation:
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Cholesterol is the precursor of
Options
(a) progesterone (b) testosterone (c) estradiol and cortisol (d) all of the above
Correct Answer:
all of the above
Explanation:
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Cytoplasm and nucleus are separated by a membrane which is
Options
(a) triple layered (b) double layered (c) single layered (d) multi layered
Correct Answer:
double layered
Explanation:
No explanation available. Be the […]
In meiosis, the daughter cells are not similar to that of parent because of
Options
(a) crossing over (b) synapsis (c) both crossing over and synapsis (d) none of these
Correct Answer:
crossing […]
Ribosomes are involved in protein synthesis in
Options
(a) prokaryotes (b) eukaryotes (c) both prokaryotes and eukaryotes (d) viruses
Correct Answer:
both prokaryotes and eukaryotes
Explanation:
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Which of the following sugar is found in nucleic acid?
Options
(a) dextrose (b) glucose (c) levulose (d) deoxyribose
Correct Answer:
deoxyribose
Explanation:
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