A herbicides dichlorophenyldimethylurea (DCMU) is known as diuron an inhibitor of photosynthetic electron transport. Which one of the following option would be correct about diuron?

a.) Blocks electron flow at the plastoquinone acceptors of PSII by competing for the binding site of plastoquinone

b.) causes a partial inhibition of stomatal closing

c.) accepts electrons from the early acceptors of PSI such as A0 and then reacts with oxygen to form superoxide, O2 –

d.) causes a partial inhibition of light-stimulated stomatal opening

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#Question id: 3409

#Unit 11. Evolution and Behavior

All genetic drift arises from sampling error, but there are several different ways in which sampling error can arise as a following

a. Reduced population size

b. Founder effect

c. Genetic bottleneck

d. Mate choice

Which of the following above way cause sampling error in succeed generation?

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#Question id: 15562

#Unit 12. Applied Biology

Deletion of which gene not only was accompanied by the abolition of antibiotic formation but also severely impaired growth on agar media.

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#Question id: 615

#Unit 1. Molecules and their Interaction Relevant to Biology

The following data were obtained in the presence and absence of inhibitor. What type of inhibition is shown?

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#Question id: 19448

#Unit 13. Methods in Biology

Which of the following incident lights will give better resolution of a specimen?

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#Question id: 10680

#Unit 10. Ecological Principles

Which of the following organism usually show exploitation competition?