Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?
perikaryon and dendrites
vacuoles and fibres
flagellum and modulloary sheath
flagellum and modulloary sheath
A.
perikaryon and dendrites
A nerve cell consists of cell body (perikaryon) containing the nucleus, Nissl granules, dendrites and an axon. These are specialized cells.
Bowman’s glands are located in the
proximal end of uriniferous tubules
anterior pituitary
female reproductive system of cockroach
female reproductive system of cockroach
Select the wrong statement from the following:
Both chloroplasts and mitochondria contain an inner and an outer membrane
Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by teh thylakoid membrane
Both chloroplasts and mitochondria contain DNA
Both chloroplasts and mitochondria contain DNA
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
Movement of water from cell B to A
No movement of water
Equilibrium between the two
Equilibrium between the two
Which one of the following statements about mycoplasma is wrong?
They are also called PPLO
They are pleomorphic
They are sensitive to pencillin
They are sensitive to pencillin
Which one of the following elements is not an essential micronutrient for plant growth?
Mn
Zn
Cu
Cu
A person is having problems with calcium and phosphorus metabolism in his body. Which one of following glands may not be functioning properly?
Parathyroid
Parotid
Pancreas
Pancreas
Compared to a bull a bullock is docile because of
higher levels of thyroxin
higher levels of cortisone
lower levels of blood testosterone
lower levels of blood testosterone
What is true about Nereis, Scorpion, Cockroach and Silver fish?
They all have jointed paired appendages
They all possess dorsal heart
None of them is aquatic
None of them is aquatic
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is
lactate dehydrogenase
isocitrate dehydrogenase
malate dehydrogenase
malate dehydrogenase
