Which of the following is a function of plasma membranes?
A) communicating directly with the cell nucleus
B) organizing cellular processes
C) regulating transportation of materials in and out of a cell
D) producing proteins and hormones
Ans: C) regulating transportation of materials in and out of a cell
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The endoplasmic reticulum is mostly devoid of ribosomes (smooth) when cells are producing large quantities of lipid.
Answer the following statement true (T) or false (F)
Antiviral drugs that target reverse transcriptase would be used to treat infections caused by ________.
A. herpes zoster virus B. HIV C. respiratory syncytial virus D. hepatitis C virus E. influenza A virus
Where does the primary uptake of water and mineral ions from the soil occur?
a. in the root hairs b. in the pericycle c. in the endodermis d. in the quiescent centre
Plaque assays are used for
A. evaluating the cancer-causing ability of a virus. B. determining the density of phage in a culture. C. the study of prions. D. cultivating viruses that cannot be grown any other way. E. counting the number of latent phages in a cell.