What happens to ubiquitin in proteosomes?
a. It is degraded.
b. It is released and recycled.
c. It is phosphorylated.
d. It has a GTP group added.
Ans: b. It is released and recycled.
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A microbiologist is attempting to determine the size of a microbial population and has employed several methods. She noticed that the direct count she obtained using a counting chamber and microscope was much higher than her estimate from doing a viable plate count. This discrepancy was encountered during multiple trials. What is the most likely reason for the discrepancy?
A. She counted incorrectly. B. She did not correctly do the serial dilutions prior to the viable plate count. C. The medium and growth conditions used for the viable count will not support the growth of the organisms. D. Many of the organisms viewed during the direct count may be dead. E. The organisms were not readily cultured on the viable count, either because many were dead or because the medium and growth conditions used for the viable count will not support the growth of the microorganism.
The root-to-shoot water flow in a plant is called the transpiration stream
a. True b. False
Plant and animal food sources have been improved by ____________________ for thousands of years. Fill in the blank(s) with the appropriate word(s)
A(n) ________ is a substance that accepts hydrogen ions or, when it dissociates in water, will give off hydroxide ions
Fill in the blank(s) with correct word