#Question id: 11130
#Unit 7. System Physiology – Animal
Which of the following electrical events is characteristic of inhibitory synaptic interactions?
#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: 3560
#Unit 8. Inheritance Biology
During which phase of meiosis does the segregation described by Mendel primarily occur?
#Question id: 10306
#Unit 1. Molecules and their Interaction Relevant to Biology
pyruvate dehydrogenase (PDH) complex requires five different coenzymes or prosthetic groups and these enzymesalso require four different vitamins in human nutrition are vital components of this system:
#Question id: 10239
#Unit 10. Ecological Principles
Two species of barnacle, balanus balanoides and Chthamalus
stellatus, occur in the intertidal regions of Scotland. As following
Which of the following statements is correct?