A fracture to the cheek would likely damage all of the following bones EXCEPT ____
a. zygomatic
b. parietal
c. maxilla
d. sphenoid
e. ethmoid
ANSWER: b
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Which one of the following statements is true of the 32 allele in the CCR5 gene? (Choose all that apply)
A. It codes for a mutant protein that is completely inactive. B. It leads to a deletion which maintains the reading frame. C. It provides some protection against HIV progression to AIDS in both its heterozygous and homozygous forms. D. It is an example of a beneficial mutation. E. It affects the attachment of HIV to an animal cell by altering one of the viral proteins.
The only possible photosynthetic cells or structures in a leaf's epidermis are:
a. cuticle b. guard cells c. stomata d. hairs e. scales
Plants require a lot of water for hydration, metabolism, homeostasis, and photosynthesis. How is water used in photosynthesis?
A. as an electron donor in the photosystems B. to combine with NADP+ to form NADPH C. to combine with ADP to form ATP D. as an electron acceptor in the electron transport chain E. as a substrate for ATP synthase
What are the possible phenotypes of the children if the mother has Type O blood and the father has type AB blood?
(Use the Punnett square to verify your answer.)
a. AB only b. A, B c. A, AB d. A, B, AB e. A, B, O