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Academic Questions
During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undergraded?
Hemicellulose
Lipids
Cellulose
Lignin
Mitotic spindle is mainly composed of which proteins?
Actin
Myosin
Actomyosin
Myoglobin
If DNA percentage of thymine is 20. What is the percentage of guanine?
20%
40%
30%
60%
Lipids are insoluble in water because, lipid molecules are
Hydrophilic
Hydrophobic
Neutral
Zwitter ions
Due to discovery of which of the following in 1980 the evolution was-termed as RNA world?
mRNA, tRNA, rRNA synthesize proteins
In some virus RNA-is genetic material
RNA have enzymatic property
RNA is not found in all cells
Types of RNA polymerase required in nucleus for RNA synthesis
1
2
3
4
Length of one turn of the helix in a B-form DNA is approximately
3.4 nm
2 nm
0.34 nm
20 nm
Radioactive thymidine when added to the medium surrounding living mammalian cells gets incorporated into the newly synthesized DNA. Which of the following types of chromatin is expected to become radioactive if cells are exposed radioactive thymidine as soon as they enter the S-phase?
Heterochromatin
Euchromatin
Both (A) and (B)
Neither heterochromatin nor euchromatin but only the nucleolus
The RNA that picks up specific amino acids from the amino acid pool in the cytoplasm to ribosome during protein synthesis is called
mRNA
tRNA
rRNA
Carrier RNA
A polysaccharide, which is synthesized and stored in liver cells, is
Lactose
Galactose
Arabinose
Glycogen
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