The free-swimming adult stage of many cnidarians that reproduces sexually is a
A. larva.
B. polyp.
C. medusa.
D. zygote.
C. medusa.
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A bacterium that uses CO2 as an electron source but CANNOT use it as a carbon source is considered a mixotroph
Indicate whether the statement is true or false.
The hormones secreted by the anterior pituitary are ____
a. peptide hormones b. neurotransmitters c. steroid hormones d. second messengers e. polar
In genetic analyses, researchers know that linkage of genes will introduce exceptions to the
principle of a. dominance. b. segregation. c. recessiveness. d. independent assortment. e. chromosomal inheritance.
Humans are unable to get metabolic energy from cellulose because:
A. cellulose contains very little chemical energy. B. cellulose does not taste good. C. cellulose is present in large quantities in the gut. D. cellulose digesting enzymes are absent from the human gut. E. cellulose is not part of a normal diet.