#Question id: 11004
#Unit 7. System Physiology – Animal
Which of the following is most likely to cause the heart to go into spastic contraction?
#Question id: 9584
#Unit 6. System Physiology – Plant
In given Relationship of oxygen production to flash energy, the first evidence for the interaction between the antenna pigments and the reaction centre, What conclusion can be drawn about based on graph;
a.) several hundred pigments are associated with each reaction centre and that each reaction centre must operate four times to produce 1 molecule of oxygen—hence the value of 2500 chlorophylls per O2
b.) low light intensity of the curve, an increase in the number of photons stimulates a proportional increase in oxygen evolution. Thus, the slope of the curve measures the quantum yield for oxygen production
c.) The quantum yield for a particular process can range from 0 →if that process does not respond to light to 1.0→if every photon absorbed contributes to the process by forming a product
d.) O2 require more than a single photochemical event to be formed, and therefore have a lower quantum yield of formation than the photochemical quantum yield. It takes about ten photons to produce one molecule of O2, so the quantum yield of O2 production is about 0.1
Which of the following statements would be correct relates with graph?
#Question id: 4050
#Unit 3. Fundamental Processes
An antibody was produced and used in an immunohistochemical assay to detect the location of RNA polymerase II in a thin section of a liver biopsy. The section was stained with the antibody that had been labeled with a fluorescent tag, and then viewed under a fluorescent microscope. State where you would expect to find positive staining if the enzyme is present.
#Question id: 15670
#Unit 8. Inheritance Biology
#Question id: 26409
#Unit 3. Fundamental Processes
DNA polymerase α has unusual properties because it has the ability to initiate a new strand, so Choose which of the following are true regarding DNA polymerase α
a. It has dual capacity to prime and extend chains
b. It is used to initiate both the leading and lagging strands
c. It has both DNA polymerase as well as RNA polymerase activity
d. It also help to synthetised iDNA