Which is the most muscular and powerful chamber of the heart?
A. right atrium
B. left atrium
C. right ventricle
D. left ventricle
D. left ventricle
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Kinetoplastids are ____
a. non-photosynthetic b. parasitic c. ciliated d. non-photosynthetic and parasitic e. non-photosynthetic, parasitic, and ciliated
Translocation in sieve tubes requires active transport
Indicate whether the statement is true or false.
Recall Stiling and Drake's experiments using chambers with elevated CO2. What are the implications of their experiment for farmers in the coming decades, if CO2 levels rise as predicted?
A. Farmers will see lower crop productivity and nutrition, in addition to more insect damage. B. Farmers will see higher crop productivity and less insect damage, but the crops will be less nutritious. C. Farmers will see higher crop productivity, but there will be more insect damage and the crops will be less nutritious. D. Farmers will see higher crop productivity and nutrition, but there will be more insect damage.
An allele that exerts its effects whenever it is present is
a) recessive. b) dominant. c) homologous. d) homozygous. e) heterozygous.