Which of the following is NOT a true statement about enzymes involved in the digestive system? A. Enzymes are necessary for digestion. B. Enzymes have an optimal range of operant conditions (eg, temperature and pH).
C. Enzymes react with specific substrates to help speed up the process of breaking them down.
D. Enzymes slow down digestion so that nutrients can be absorbed more thoroughly.​

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?