Once a cell completes mitosis, molecular division triggers must be turned off. What happens to MPF during mitosis?
A) It is completely degraded.
B) It is exported from the cell.
C) The cyclin component of MPF is degraded.
D) The Cdk component of MPF is degraded and exported from the cell.
C
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Cnidarians have _____ symmetry
A. no B. radial C. bilateral D. circular
The nucleoli are found within the nucleus and synthesize ____
a. chromatin b. mRNA c. ribosomal subunits d. genes e. proteins
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. No, because the oxygen will be immediately used up to the previous deficit. B. Yes, because the increased oxygen levels in the lungs will stimulate the breathing rate to return to normal. C. Yes, because normal oxygen levels in the tissues will cause his breathing rate to return to normal. D. No, because the brain does not use oxygen levels to regulate breathing.
Mycorrhizae are associations between:a
coral animals and dinoflagellates. b. two types of insects. c. fungi and plant roots. d. wasps and orchids. e. epiphytes and rainforest trees.