Answer:
There is no regulatory protein that oxidizes these Calvin cycle enzymes; oxidation is spontaneous.
Explanation:
Four enzymes of the Calvin cycle are regulated by sunlight. These enzymes are namely Ribulose 5-phosphate kinase, fructose 1,6-bisphosphatase, sedoheptulose 1,7-bisphosphatase, and glyceraldehyde 3-phosphate dehydrogenase.
The inactive form of these enzymes has disulfide bonds between two Cys residues. In the presence of sunlight, the reduced thioredoxin that obtains electrons from PS-I via ferredoxin reduces the disulfide bonds between the Cys residues of these enzymes.
The reduction of the bonds brings about the confirmation changes to make the enzyme active.
At nightfall, these bonds are spontaneously re-oxidized and there is no reduced thioredoxin available to reduce them again. The spontaneous oxidation of the disulfide bonds of these enzymes at nightfall makes them inactive again.
Well, some theories are stupid and some are valid. First, scientists believe that we (humans) evolved from apes. I don't think that is valid, they have no proof. But I do believe that over time, animals have evolved from ancestors. Say birds didn't have wings, Over time God (or whatever you believe) gave them wings so it would help them. Some of those theories are that what influenced scientific debate.
Answer:
El tejido en las plantas vasculares que circula líquido y nutrientes.
El sistema vascular, también llamado sistema circulatorio, está formado por los vasos que transportan sangre y linfa a través del cuerpo. Las arterias y las venas transportan sangre por todo el cuerpo, entregando oxígeno y nutrientes a los tejidos del cuerpo y eliminando los desechos de tejido.
Explanation:
The organism that grows on the body of another organism and derives nutrients from it is known as a parasite. The organism that obtains nutrients from the dead or decaying organic matter is called saprotroph.
Answer:
D
Explanation:
I believe its D because we cross out the first 2 options because the question is asking about the dark line which is the pups and not the adults. if we look D and the lowest point of dark line, we can say its talking about <u>few</u> and 1995 talking about <u>many. </u>
