While not all members of ________ are pathogenic, two medically relevant species cause meningitis and gonorrhea in humans
A) Enterobacter
B) Neisseria
C) Shigella.
D) Staphylococcus
Answer: B
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Which endocrine gland is the main center for control of the internal environment?
a. pineal b. hypothalamus c. thyroid d. adrenal cortex e. thalamus
Genes that are expressed only when needed are
A) unregulated. B) mutations. C) inducible. D) constitutive. E) anabolic.
What is the main difference between habituation and conditioning?
A. Habituation involves genetic imprinting, while conditioning involves only learned behavior. B. Habituation lacks an external stimulus, while conditioning involves both external and internal stimuli. C. Habituation involves a stimulus with no association, while conditioning involves a stimulus with an association. D. Habituation involves an increase in the intensity of response, while conditioning involves a decrease in intensity of response. E. Habituation involves learning, while conditioning does not.
The embryo of a ________ undergoes direct development
A) snake B) frog C) lobster D) butterfly E) dragonfly