A woman is found to have forty-seven chromosomes, including three X chromosomes. Which of the following describes her expected phenotype?
A) a female with masculine characteristics such as facial hair
B) an apparent male who is sterile
C) healthy female of slightly above-average height
D) a sterile female
C
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The most common of all nosocomial infections are ________ infections
A) blood B) reproductive tract C) urinary tract D) respiratory tract
Double fertilization is important to the reproductive process because it produces:
A. both the zygote and the endosperm B. a reaction that keeps the plant from dying C. a double portion of endosperm D. nutrition for the seed E. None of these is true
Photosynthesis occurs chiefly in the leaf's:
a. epidermis. b. bundle sheath extensions. c. mesophyll. d. trichomes. e. vascular bundles.
High-energy electrons from molecules of NADH and FADH2 are transferred to a chain of proteins within the electron transport chain. What is the final protein in the electron transport chain?
A. ubiquinone B. NAD+ C. oxygen D. carbon dioxide E. cytochrome c