Which of the best describes the events that take place when enzymes catalyzes a chemical reaction

In cellular respiration, a series of molecules forming an electron transport chain alternately accepts and then donates electrons. what is the advantage of such an electron transport chain?

The permeability of a biological membrane to a specific polar solute may depend on which of the following? A. the amount of cholesterol in the membraneB. the types of transport proteins in the membraneC. the phospholipid composition of the membraneD.

For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement? a. Acquired characteristics are inherited. b.

All of the following would result in a change in population size except

Most animals have coordinated movement because they are muscular and skeletal systems are controlled by

Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.

What was the purpose of the vinegar in the third trial? a. test the effect of raising pH on enzyme action b. test the effect of lowering pH on enzyme action c. serve as a control d. served no purpose

How do substances move in passive transport?

Atmosphere: is mostly made of nitrogen is weightless protects earth from harmful radiation contains water vapor is affected by events in the hydrosphere

According to this species-area curve for reptiles and amphibians on a west indian archipelago, a 50% decrease in area will change the number of species living in the remaining area by