3940414243 39 cytologist is examining a tissue an electron m

39,40,41,42,43

39. cytologist is examining a tissue, an electron microscope. notices in particular that the under A the rough of each cell is rough appearance and of knows that there appearance is because of the ribosomes embedded there. He is curious about why A. are many ribosomes. You can help. would be, \"This tissue exports lipids and is very involved with mRNA which of course is used in protein synthesis.\" B. \"This tissue exports proteins to other areas of the body. C. \"This tissue exports lipids to other areas of the body.\" D. \"This tissue exports various nucleic acids, hence the large number of ribosomes present on the endoplasmic reticulum in each of those cells. 40. A cell biologist has developed a new drug that will block the cis face of the Golgi apparatus. If eventually approved by the FDA, she wants to use this new drug to aid cancer patients. What specifically will this drug prevent from happening inside a cancer cell? A. the synthesis of proteins or lipids on the endoplasmic reticulum B. the movement of the lipids and proteins from the endoplasmic reticulum to the Golgi apparatus C. the blockage of proteins and on the endoplasmic D. the prevention of ATP synthesis by blocking pyruvate formation on the trans face of the Golgi apparatus 41. A cell biologist treats a cell so that oxygen cannot diffuse across the membrane. Which organelle will be directly affected? A. mitochondria lysosome C. nucleus D. ribosome E. Golgi apparatus

Solution

39. The answer is: B. \" This tissue exports proteins to other areas of the body.\"

The ribosomes that attach to the ER are responsible for protein assembly which are then destined to various location in the body.

42. The answer is: A. cell walls.

Both plants and bacteria posses cell walls although plants are eukaryotes and bacteria are prokaryotes.

43. The answer is: A. mitochondria

Endomembrane system does not include mitochondria.