1. The rate of enzyme reaction is directly proportional to the substrate concentration
2. Presence of an enzyme inhibitor in the reaction mixture
3. Formation of an enzyme-substrate complex
4. At higher substrate concentration the pH increases
Presence of an enzyme inhibitor in the reaction mixture
1. a reduction in haemoglobin content of blood
2. a reduction in stem cell production
3. loss of antibody mediated immunity
4. loss of cell mediated immunity
loss of cell mediated immunity
1. Typhlosole in earthworm, intestinal villi in rat and contractile vacuole in Amoeba
2. Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rate
3. Antennae of cockroach, tympanum of frog and clitellum of earthworm
4. Incisors of rat, gizzard (proventriculus) of cockroach and tube feet of starfish
Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rate
1. They are physiologically distinct
2. They are morphologically distinct
3. They cannot interbreed in nature
4. They are reproductively distinct
They cannot interbreed in nature
1. lag, log, stationary, decline phase
2. lag, log, stationary phase
3. stationary, lag, log, decline phase
4. decline, lag, log phase
lag, log, stationary, decline phase
1. 25%
2. 50%
3. 75%
4. 100%
50\%
1. drying of the lake very soon due to algal bloom
2. an increased production of fish due to lot of nutrients
3. death of fish due to lack of oxygen
4. increased population of aquatic food web organisms
death of fish due to lack of oxygen
1. Both the strands of DNA will be radioactive
2. One strand radioactive
3. Each strand half radioactive
4. None is radioactive
One strand radioactive
1. cyclic treatment
2. primary treatment
3. activated sludge treatment
4. tertiary treatment
activated sludge treatment
1. introduction of high yielding varieties
2. intensive use of fertilizers
3. extensive intercropping
4. intensive use of biopesticides
intensive use of biopesticides