Which structure adjusts to control the intensity of incoming light?
a. cornea
b. sclera
c. iris
d. ciliary body
e. fovea
ANSWER: c
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The secretion of follicle-stimulating hormone from the anterior pituitary gland is reduced by _____
A) inhibin B) luteinizing hormone C) oxytocin D) prolactin E) vasopressin
________ is the acquired inability to mount an adaptive immune response against self
A) Memory B) Specificity C) Tolerance D) Immunogenicity
American sycamore (Platanus occidentalis) and European sycamore (Platanus orientalis) are tree species that will interbreed if planted nearby but will not normally interbreed because they occur on different continents. This is an example of
A. mechanical isolation. B. temporal isolation. C. habitat isolation. D. behavioral isolation. E. gametic isolation.
Which of the following is the introduction of a non-mutated gene at a random location in the genome in hopes of curing a disease?
a. gene therapy b. polymerase chain reaction (PCR) c. gel electrophoresis d. recombinant DNA