Plasma cells .

a. are large so that they can envelope their prey by phagocytosis
b. have a great deal of rough endoplasmic reticulum to dispose of ingested pathogens
c. are small so that they slip between endothelial cells of capillaries to fight infection in the surrounding tissues
d. have a great deal of rough endoplasmic reticulum reflecting the fact that they secrete a tremendous amount of protein (antibody)

d. have a great deal of rough endoplasmic reticulum reflecting the fact that they secrete a tremendous amount of protein (antibody)

Explanation:

Plasma cells are lymphocytes which originates from the bone marrow. They are B cells and not usually found in blood circulation. They tend to remain in organs of their choice.

Plasma cells mechanism of operation is by producing enough antibodies to fight against antigens it encounters in the bloodstream.

These antibodies are rich in protein which makes the plasma cells rich in rough endosplasmic reticulum. The rough endosplasmic reticulum is responsible for protein synthesis in cells.

This explanation validated the option D.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

plato users

given bodies of water

pacific / arctic / indian / southern

[ a ] the caribbean sea

[ b ] the northern ocean

[ c ] the atlantic ocean

[ d ] the barents sea

with this being the given answers