-
- They can move
- They lack cell wall
- Both a and b
- They do not have chlorophyll
Sciences MCQs
Spores in sporangia are produced by process?
-
- Asexual
- Sexual
- Both of these
- None of these
In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall_____.
-
- Absorption
- Penetration
- Multiplication
- Lysogeny
Which of the following vitamins is useful in ostcoimalacia?
-
- Vitamin D
- Vitamin E
- Vitamin C
- Vitamin A
Which of the following cells secrete insulin?
-
- Alpha cells
- Beta cells
- Delta cells
- Nerve cells
The method of reproduction of new plants by cells instead of seed is known is_____.
-
- Tissue culture
- Mutation
- Antibiosis
- Recombination
Human blood is a viscous fluid due to_____.
-
- Platelets in plasma
- RBC and WBC in blood
- Sodium in serum
- Proteins in blood
The resolving power of electric microscope is_____.
-
- 0.2 mm
- 0.2 m
- 0.2 nm
- All of these
In human body 99% of total mass is formed of_____.
-
- 16 Bio-elements
- 6 Bio-elements
- 12 Bio-elements
- 10 Bio-elements
Reverse transcriptase is present in_____.
-
- All RNA viruses
- All DNA viruses
- All viruses
- All retroviruses