Which is a way in which exocytosis differs from the pumping of calcium ions against a concentration gradient?

A. Exocytosis is a form of passive transport.
B. Exocytosis does not involve a carrier protein.
C. Exocytosis occurs with the concentration gradient.
D. Exocytosis requires an expenditure of energy by the cell

Whay is the following best defines climate

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere