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Sciences MCQs
In the Lysogenic cycle the DNA of the bacteriophage _____.
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- Attaches to the inner surface of the host membrane
- Joins the bacterial chromosomes
- Goes directly to host ribosomes for translation
- Is immediately degraded when enters the host
Which one of the following organs is known as graveyard of RBCs?
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- Liver
- Spleen
- Pancreas
- Bones
80% of the food of sponges consists of_____.
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- Zooplankton and small animals
- Detrital organic particles
- Phytoplanktons
- All of the above
Cuticular transpiration is _____of total transpiration?
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- 4-6%
- 5-7%
- 6-8%
- 7-9%
Which of the following organelles contain its own DNA?
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- chloroplast
- mitochondria
- nucleus
- All of these
The term ‘gene’ refers to _____.
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- A linkage group
- A portion of RNA
- A sequence of Amino
- A portions of DNA
Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____.
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- Cofactor
- Enzymes
- Coenzymes
- Activator
Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called_____.
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- Haustoria
- Constricting ring
- Mildew
- All of the above
Which one of the following specially result in chronic liver disease leading to hepatic failure?
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- HCV
- HAV
- HEV
- HBV