Normal action potential of a neuronal cell is _____.

1. 1. plus 70 mv
   2. plus 55 mv
   3. plus 50 mv
   4. plus 80 mv

Which of the following marine fishes are considered direct descendents of fresh water ancestors?

1. 1. Jelly Fish
   2. Bony fishes
   3. Star Fish
   4. Hagfish

One of the reasons why some people cough while eating a meal may be due to the improper movement of _____.

1. 1. Diaphram
   2. Epiglottis
   3. Larynx
   4. None of these

Which one of these structures involved in replication of bacterial dna?

1. 1. Pilli
   2. Plasmid
   3. Mesosome
   4. Chromosomes

Virus is_____.

1. 1. Acellular
   2. Multicellular
   3. Unicellular
   4. All of these

Which of the following manufactures carbohydrates by the process of photosynthesis?

1. 1. chloroplast
   2. leucoplast
   3. chromoplast
   4. Noe of these

Lenticels look like_____.

1. 1. Cars or small protrusions
   2. Stoma
   3. Sponge
   4. A big pore

Which of the following is not the characteristic of dinoflagellates?

1. 1. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
   2. They have blooms
   3. Most of them are unicellular
   4. All of these

Which of the following is a uni-nucleated cell?

1. 1. A smooth muscle cell
   2. A skeletal muscle cell
   3. A cardiac muscle cell
   4. None of these

One of the commonest cause of food poisoning are the toxins produced by_____.

1. 1. Nitrobacter
   2. Nitrosomonas
   3. Azotobacter
   4. Campylobacter