What conclusions did Beadle and Tatum reach in their studies of Neurospora?
a. Each mutant gene affected three enzymes.
b. Each mutant gene affected a pair of enzymes.
c. Each mutant gene affected only one enzyme.
d. Mutant genes had no effect on the enzymes produced by the cells.
e. Each mutant gene affected as many enzymes as were present in a particular metabolic pathway.
c
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The process by which related species become more different in order to reduce competition is called ___________ _________.
Fill in the blank(s) with the appropriate word(s).
Match the reactant in the TCA cycle on the left with the appropriate enzyme on the right.
A) fumarate dehydrogenase B) malatase C) succinyl CoA synthetase D) malate dehydrogenase E) citrate synthase F) fumarate hydratase G) succinate dehydrogenase H) aconitase 1. Oxaloacetate 2. malate 3. citrate 4. fumarate 5. succinyl CoA
The process through which cells can detect and respond to signals in their extracellular environment is _____.
A. Cell sensation B. Cell communication C. Transduction D. Reception E. Sensory response
The vision center of the cerebral cortex is
located in the ___lobe.
a. temporal b. frontal c. parietal d. occipital e. somatic