A defect in which of the following systems leads to granulomatous disease?
A. lymphatic system
B. circulatory system
C. oxidase system
D. Golgi system
C
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Hummingbirds' small size allows them to hover while extracting nectar from various flowers. This same small size requires large amounts of calories to maintain body temperature because
a. the breeze from their flapping wings constantly cools them off. b. hummingbirds only eat at night. c. they have a large body mass relative to their surface area. d. hovering requires less energy than forward flight. e. they have a large surface area relative to their body mass.
If one side of a DNA molecule has the bases CGAT, the opposite side would have the bases _____
Fill in the blank(s) with the appropriate word(s).
Invertebrates on land use __________ or __________ systems for gas exchange.
Fill in the blank(s) with the appropriate word(s).
The term N-terminus refers to the presence of a(n) ________ at one of the ends of a polypeptide.
A. carbonyl group B. carboxyl group C. sulfate group D. oxygen atom E. amino group