Question

choose from the following cells for question

1) muscle cell in the thigh muscle of a long-distance runner

2) pancreatic cell that manufactures digestive enzymes

3) ovarian cell that produces the steroid hormone estrogen

4) cell in tissue layer lining digestive tract

5) white blood cell that engulfs bacteria

Q)

a) In which cell would you expect to find the most mitocondria ?

b) In which cell would you expect to find the most

smooth ER ?

c) In which cell would you expect to find the most rough ER?

d) In which cell would you expect to find the most lysosome?

e) In which cell would you expect to find the most

tight junctions ?

???

Answer 1

Muscle cell in the thigh muscle of a long distance runner has most mitochondria to meet the large enery requirement.

Pancreatic cells that manufacture digestive enzymes have more Rough ER to synthesize and secrete more enzymes (proteins) due to the ribosomes associated to them.

Ovarian cells that produce the steroid hormone estrogen have more Smooth ER as it synthesizes and stores lipids, steroids and phopholipids.

Cells in tissue layer lining digestive tract have the most tight junctions allowing the slective movement of ions and water through them.

White blood cells that enulf bacteria will have most lysosomes to bring phaocytosis.