Dark reaction in photosynthesis is called so because
(A) It can occur in dark alone
(B) It does not require direct light energy
(C) It cannot occur during day time
(D) It occurs more rapidly at night

Consider the following statements regarding photosynthesis (A) ATP formation during photosynthesis is temed as photophosphorylation (B) Kranz anatomy pertains to leaf (C) Reduction of NADP^(+) to NADPH occurs during Calvin cycle (D) In a chlorophyll molecule mangesium is present in phytol tail

[A]: The energy capturing part of photosynthesis occurs in thylakoid membranes and can not proceed without solar energy. [R]: The synthesis part of photosynthesis occurs in the stroma and does not require direct light energy.

Assertion. In light reaction of photosynthesis, light is required for the functioning of PS I and PS II and Production of NADPH and ATP. Reason. Dark reaction does not occur in light.

If a coin is tossed 3 xx find the probability that a Head does not occur b) Head occurs at most once c) Head occurs at least once d) Tail occurs once

Mitosis result in producing two cell which are similar to each other. What would be the consequence if each of the following irregularities occur during mistosis ? (a) Nuclear membrane fails to disintegrate (b) Duplication of DNA does not occur (c) Centromeres do not divide (d) Cytokinesis does not occur

The rate of reaction ((dx)/(dt)) varies with nature, physical state and concentration of reactants, temperature, exposure to light and catalyst, whereas rate constant (K) varies with temperature and catalyst only. The rate constant K is given as K=Ae^(-E_(a)//RT) where A is Arrhenius parameter or pre-exponential factor and E_(a) is energy of activation. The minimum energy required for a reaction is called threshold energy and the additional energy required by reactant molecules to attain threshold energy level is called energy of activation. For a reversible reaction, A+B hArr C+D, DeltaH=-A kcal . If energy is B kcal, the energy of activation for backward reaction in kcal is: