The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT
A. protection against dehydration.
B. anchoring cells to each other.
C. cellular recognition and communication.
D. transfer of genetic material between cells.
E. strengthening the cell surface.
Answer: D
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In an emergency room, a patient is found to have a depressed breathing rate, and subsequently low oxygen levels in the tissues. He is put on oxygen, but his respiration rate continues to be too low, and his oxygen saturation level in his tissues also continues to be too low. Will increasing the oxygen levels that he is receiving correct his low breathing rate?
A. Yes, because normal oxygen levels in the tissues will cause his breathing rate to return to normal. B. Yes, because the increased oxygen levels in the lungs will stimulate the breathing rate to return to normal. C. No, because the oxygen will be immediately used up to the previous deficit. D. No, because the brain does not use oxygen levels to regulate breathing.
Describe the mechanism by which a plant responds to gravity
What will be an ideal response?
Which drug is used to stimulate ovulation?
a. hMG b. hCG c. progesterone d. estrogen e. FSH
All are true of Striated muscle tissue except ____?
a. Protein fibers appear as "little black lines" (striations) through tissue b. voluntary muscle c. multi-nucleated cells d. found in biceps and triceps muscles of human arm e. all are correct