The main source of energy for producers in an ecosystem is

A) light energy.

B) kinetic energy.

C) thermal energy.

D) chemical energy.

E) ATP.

During which stage of mitosis do the centrioles move to the opposite poles of the cell?

14 peas are generated from parents having the green/yellow pair of genes, so there is a 0.75 probability that an individual pea will have a green pod. Find the probability that among the 14 offspring peas, at least 13 have green pods.

Compare the processes of anaerobic respiration in muscle and plant cells

The intravenous infusion of fructose into healthy volunteers leads to a two - to fivefold increase in the level of lactate in the blood, a far greater increase than that observed after the infusion of the same amount of glucose.

Does Grame negative or positive have peptidoglycan?

Which term refers to contrasting forms of the same gene

If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells A. it would be much longer before cardiac cells could respond to a second stimulation B.

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions.

What effect would overfishing most likely have on a population of fish in a lake? A-cause a gene flow to occur in the population. B-create a bottleneck effect, reducing genetic diversity. C-create a founder effect, restricting genetic variation.

What factors contributed to the worlds overall population growth in the last 150 years