Crater Lake in Oregon formed as a result of a(n) ____ about 7,700 years ago
a. asteroid strike
b. collapsed volcano
c. massive earthquake
d. continental shift
e. shift in Earth’s axis
ANSWER: b
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A 42-year-old woman becomes pregnant. Her physician recommends amniocentesis (a test for fetal chromosomal disorders). When the results are analyzed by the laboratory, it is determined that the fetus has 47 chromosomes. Name and fully explain what caused
this disorder. When the woman and her husband consult a genetic counselor, they are told that this problem is likely to have occurred in the woman's egg cells, not in her 50-year-old husband's sperm cells. Explain why. What will be an ideal response?
In the absence of ATP synthase, animal cells would not be able to ____
a. create a proton gradient b. hydrolyze glucose to G3P c. carry out oxidative phosphorylation d. produce ATP e. carry out pyruvate oxidation
A toxin that is secreted and acts upon a specific cellular target is called a(n)______
Fill in the blank(s) with the appropriate word(s).
Midocean ridges form:
a. anywhere in the middle of the ocean. b. in subduction zones. c. where oceanic crust is cracked and magma is emerging. d. in deep ocean trenches.