The energy you use in voluntary muscular activities such as work and sports, plus the amount of energy required to digest and assimilate your food, is called
A. total Calories used.
B. muscular energy expended.
C. BMR.
D. specific dynamic action.
A. total Calories used.
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Taq polymerase is commonly used in PCR reactions because it ____
a. keeps the primers from annealing to the DNA b. makes fewer DNA replication errors than other DNA polymerases c. is a heat-stable DNA polymerase d. is more efficient at replicating DNA than other DNA polymerases e. helps the primers anneal to the correct DNA sequence
To germinate, pollen requires liquid that comes from ________
a. the body of the pollinating animal b. the stigma c. petals of the flower d. storage vacuoles within the pollen grain
Extensive epiphytes are found in the tropical dry forests
____________________ Indicate whether the statement is true or false.
Which organism has the narrowest ecological niche?
A. A remora that will hitchhike on any species of shark, eating its scraps B. A shark that will eat anything that can fit into its mouth C. A parasitic crab that infects only sea urchins D. A sea urchin that eats several species of algae E. A lobster that eats any type of small, bottom-dwelling shellfish