All functions in the sponge (gas exchange, circulation, and excretion) are performed by diffusion except which of the following?
a. sensory function
b. glandular secretion
c. digestion
d. camouflage
c. digestion
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The anticodon of a particular tRNA molecule is _____
A) complementary to the corresponding mRNA codon B) complementary to the corresponding triplet in rRNA C) the part of tRNA that bonds to a specific amino acid D) changeable, depending on the amino acid that attaches to the tRNA E) catalytic, making the tRNA a ribozyme
What is peristalsis?
A. a process of fat emulsification in the small intestine B. smooth muscle contractions that move food through the alimentary canal C. loss of appetite, fatigue, dehydration, and nervous disorders D. the transport of nutrients to the liver through the hepatic portal vein E. voluntary control of the rectal sphincters regulating defecation
You see an advertisement on the television with a very good looking person showing off a new, shiny, powerful car
You seriously think about buying that particular car. Therefore, the person in the advertisement could best be described asthe:a. sign stimulus. b. operant conditioner. c. imprinter. d. classic conditioner. e. negative reinforcer
Bats, birds and dragonflies can all fly. Which of the following groups of animals have some members capable of flights?
A. reptiles, amphibians, and arthropods B. reptiles and mammals only C. mammals and arthropods only D. amphibians and arthropods only E. reptiles, arthropods, and mammals