Which group of receptors is most important in helping a diver maintain an upright position while exploring a dark
passageway in an underwater shipwreck?
a. proprioceptors
b. nociceptors
c. chemoreceptors
d. thermoreceptors
e. electroreceptors
a
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The organism Sarcocystis has an obligatory two-host life cycle—an intermediate host and definitive host. The sporocysts found in a stool specimen, which measure 9 to 16 µm, are broadly oval with slightly ___________ ends
a. blunt b. tapered c. rounded d. flattened
Inflamed tissue turns red because ________.
Fill in the blank(s) with the appropriate word(s).
Which class of hormones produced in the roots of plants promotes cell division and growth and retards the aging of flowers and leaves?
A) gibberellins B) phytochromes C) cytokinins D) ethylene
Diploid organisms are so described because _____.
A) each characteristic is influenced by one or more genes B) each gene has a specific locus on a chromosome C) a particular gene may occur in a variety of molecular forms D) each gene is paired with another located at the same locus on a homologous chromosome