Arthropods usually detect chemicals in water or air with their:
a. antennae
b. legs
c. mouths
d. noses
e. eyes
a
Biology & Microbiology
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When X-linked traits are recessive, females will express the traits only if they are ____ for the recessive allele
Fill in the blank with the appropriate word.
Biology & Microbiology
The key mediators of apoptosis are the ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Bristle worms are found primarily in marine environments and characteristically have parapodia. Which class do they belong to?
a. Cestoda b. Oligochaeta c. Hirudinea d. Polychaeta
Biology & Microbiology
The cell surface receptors that can act only indirectly on plasma membrane-bound enzymes or ion channels are called
A. enzymatic receptors. B. second messenger receptors. C. G protein-coupled receptors. D. gated ion channels.
Biology & Microbiology