A heat engine would have 100% efficiency if its input reservoir were
What will be an ideal response?
an finite temperature if the exhaust were at absolute zero
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At about pH 7 in most cells, what happens to the amino R-group on an amino acid?
A) It acts as a base and gains a proton, giving it a positive charge. B) It acts as an acid and loses a proton, giving it a negative charge. C) It is reduced, and tends to act as an electron donor in redox reactions. D) It remains neutral, like water, and does not have a charge.
In an experiment described in a chemistry lab book, the directions state that after mixing two chemicals (A and B) and waiting 5 minutes that A will be oxidized. This means that:
A. chemical A has lost electrons to chemical B. B. chemical A has gained electrons from chemical B. C. chemical A has gained energy in the form of heat from chemical B. D. chemical A has lost energy in the form of heat to chemical B. E. chemical A has reacted with oxygen.
The origin of replication in bacteria is called OriC
Indicate whether the statement is true or false
Which of the pairs of hormones BOTH increase blood sugar?
a. insulin & glucagon b. growth hormone & insulin c. glucagon & epinephrine d. antidiuretic hormone & glucagon