-
- plus 70 mv
- plus 55 mv
- plus 50 mv
- plus 80 mv
Sciences MCQs
Which of the following marine fishes are considered direct descendents of fresh water ancestors?
-
- Jelly Fish
- Bony fishes
- Star Fish
- Hagfish
One of the reasons why some people cough while eating a meal may be due to the improper movement of _____.
-
- Diaphram
- Epiglottis
- Larynx
- None of these
Which one of these structures involved in replication of bacterial dna?
-
- Pilli
- Plasmid
- Mesosome
- Chromosomes
Virus is_____.
-
- Acellular
- Multicellular
- Unicellular
- All of these
Which of the following manufactures carbohydrates by the process of photosynthesis?
-
- chloroplast
- leucoplast
- chromoplast
- Noe of these
Lenticels look like_____.
-
- Cars or small protrusions
- Stoma
- Sponge
- A big pore
Which of the following is not the characteristic of dinoflagellates?
-
- Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
- They have blooms
- Most of them are unicellular
- All of these
Which of the following is a uni-nucleated cell?
-
- A smooth muscle cell
- A skeletal muscle cell
- A cardiac muscle cell
- None of these
One of the commonest cause of food poisoning are the toxins produced by_____.
-
- Nitrobacter
- Nitrosomonas
- Azotobacter
- Campylobacter