#Question id: 2205
#Unit 2. Cellular Organization
Amino acid entry into cells can occur via uniporters or symporters. If the rate of leucine entry into the cell increases when the pH decreases, this suggests:
#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: 3608
#Unit 8. Inheritance Biology
Mendel crossed plants with the seed characters round and yellow with plants having the contrasting seed characters wrinkled and green. Round is dominant
to wrinkled, and yellow is dominant to green. The F1 progeny were all round and yellow. What will be genotype ratio in F2 generation?
#Question id: 23219
#Unit 13. Methods in Biology
#Question id: 7595
#Unit 1. Molecules and their Interaction Relevant to Biology