The relationship between activation energy and the rate constant of the reaction, k, is given by the 

#Question id: 4970

#Unit 11. Evolution and Behavior

If two continental land masses converge and are united, then the collision should cause

#Question id: 33313

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 10134

#Unit 6. System Physiology – Plant

Some herbicides such as dichlorophenyldimethylurea (DCMU, also known as diuron) and paraquat, block photosynthetic electron flow from where ?

a.) DCMU blocks electron flow at the quinone acceptors of PSII, by competing for the binding site of plastoquinone that is normally occupied by PQB

b.) Paraquat accepts electrons from the early acceptors of PSI and then reacts with oxygen to form superoxide, O2 – , a species that is very damaging to chloroplast components

c.) DCMU blocks electron flow at the pheophytin acceptors of PSII, by competing for the binding site of pheophytin

d.) Paraquat accepts electrons from the Iron-sulfur system of PSI and then reacts with oxygen to form superoxide, O2 – , a species that is very damaging to chloroplast components

Which of the following combination is true?

#Question id: 33241

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 2629

#Unit 2. Cellular Organization

Case of constitutive mutants,