Fishes, most of the invertebrates and amphibians are examples of ________ animals??
A. Endotherms
B. Ectotherms
C. Heterotherms
D. Homeotherms
Category: Biology Mcqs
Which of the following is second largest part of the brain_______________??
A. Cerebrum
B. Cerebellum
C. Thalamus
D. Hypothalamus
If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of____________________??
A. Enzymes get denatured at higher substrate conc
B. Rate of reaction is indirectly proportional to substrate concentration at this point
C. All the active sites on enzyme molecule are occupied
D. None of these
Human blood is an example of__________??
A. Organelle
B. Tissues
C. Organic compound
D. Inorganic compounds
There are _________ stomata per square cm of leaf surface in Tobacco plants??
A. 1200
B. 12000
C. 100,000
D. 1000
Which chemical component has the greatest contribution in the total mammalian cell weight__________??
A. Proteins
B. Carbohydrate
C. Lipids
D. Water
Pollen grains in pinus have __________ for dispersal through wind??
A. Flagella
B. Cilia
C. Wings
D. Feathers
Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________??
A. Diffusion.
B. Facilitated diffusion.
C. Passive transport.
D. Active transport.
Sebum produced from sebaceous glands in a mammal helps in___________??
A. Protection against micro organisms
B. Temperature regulation
C. Excretion
D. All of these
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ??
A. Molecular biologists
B. Microbiologists
C. Freshwater biologists
D. Social biologist
