Which one of the follwing mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?
White blood cells
Unstriated muscle cells
Liver cells
Liver cells
Feeling the tremors of an earthquake a scared resident of the seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this action?
Thyroxin
Adrenaline
Glucagon
Glucagon
The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?
Deletion of non-essential genes
Super-coiling in nucelosomes
DNAse digestion
DNAse digestion
The wavelength of light absorbed by Pr form of phytochrome is
640 nm
680 nm
720 nm
720 nm
Which one of the following is not a constituent of cell membrane?
Cholesterol
Glycolipids
Proline
Proline
In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result
there is no change in success rate of fertilization
there is high degree of sterility
one can conclude that the plant is apomictic
one can conclude that the plant is apomictic
The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is
cytochrome
iron-sulphur protein
ferredoxin
ferredoxin
D.
ferredoxin
Plastoquinone is the first acceptor of electrons from an excited chlorophyll molecule of photosystem II.
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
First negative, then positive and again back to negative.
First positive, then negative and continue to be negative
First negative, then positive and continue to be positive
First negative, then positive and continue to be positive