Although it is too simple an explanation, the concept of a key fitting into a lock is descriptive of the:
a. inhibition of enzymes by small molecules
b. fit of coenzymes to enzymes
c. matching of enzyme with substrate
d. regeneration of ATP from ADP
e. stepwise cascade of electrons in the oxidation-reduction reactions
c
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All unicellular organisms belong to the same domain of life
Indicate whether the statement is true or false.
Imagine that you are studying a new species. As you examine the circulatory system, you note that a four-chambered heart drives the blood in two directions simultaneously; to the body and to the lungs. What can you conclude about this animal? Check all that apply.
_____ It has double circulation. _____ It has hemi circulation. _____ It has single circulation. _____ The circulatory route is similar to that of a trout. _____ The circulatory route is similar to that of a snake. _____ The circulatory route is similar to that of a gorilla.
Random changes in gene frequency that occur in small populations describes the concept of
a. genetic drift. b. convergent evolution. c. adaptive radiation. d. sympatric speciation. e. parapatric speciation.
The critical enzymatic virulence factor that aids survival of Helicobacter pylori in the harsh acidic environment of the stomach is ________, which increases the local pH by converting urea to CO2 and NH3.
Fill in the blank(s) with the appropriate word(s).