A sensillum is
a. a hollow hair-like tube characterized by a pore on the end and multiple chemoreceptor
cells inside.
b. located on the antennae, foot, or mouthparts of aquatic insects.
c. a specialized smell receptor in invertebrates.
d. common to earthworms, insects, and cnidarians.
e. a type of taste receptor in vertebrates.
A
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The process by which the base sequence of an RNA molecule is used to direct the synthesis of a protein is called ________.
A. reverse transcription B. translation C. transcription D. replication
The correct sequence in body forms and life stages occurring in alternation of generations in green algae protists is
A. sporophyte - meiosis division - mitotic division - spores - gametophytes - fertilization - gametes - zygote. B. gametophytes - gametes - sporophyte - meiosis division - spores - mitotic division - fertilization - zygote. C. sporophyte - meiosis division - spores - mitotic division - gametophytes - gametes - fertilization - zygote. D. gametes - meiosis division - spores - mitotic division - gametophytes - sporophyte - fertilization - zygote. E. gametophytes - gametes - sporophyte - mitotic division - spores - meiosis division - fertilization - zygote.
Which of the following is the last structure that urine
passes through? a. distal tubule b. urethra c. urinary bladder d. ureter e. loop of Henle
Which is NOT part of the nitrogen cycle?
a. denitrification b. deammonification c. nitrogen fixation d. ammonification e. uptake by autotrophs