Which of the following reagents reacts with crystal violet as the mordant?
A. safranin
B. crystal violet
C. Gram's iodine
D. 95% ethyl alcohol
Answer: C
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Suppose that you have a cell with a membrane that is permeable to water but not to Na+ or Cl? or any
other solute. There is more NaCl outside the cell than inside the cell, and the osmolarity of the cell is higher than that of the solution surrounding the cell. Which of the following should occur?
a. Overall, the cell should lose water. b. Overall, the cell should take up water, Na+, and Cl?. c. Overall, the cell should take up water. d. Overall, the cell should take up water and lose Na+ and Cl?. e. Overall, the cell should lose water and take up Na+ and Cl?.
Most organ transplants fail because
a. of poor vascular connection between host and donor tissue. b. the migrating leukocytes attack the tissue adjacent to the transplant. c. cytotoxic T cells enter the transplant through the connecting blood vessels and kill the individual transplant tissue. d. introduced tissues produce antibodies that cause a massive reaction. e. of all of these.
Alcohol is detoxified in organelles called ________
Fill in the blank(s) with correct word
The RNA that is translated into a polypeptide is ________ RNA
A) viral B) ribosomal C) transfer D) messenger