Globular proteins fold up into compact, spherical structures that have uneven surfaces. They tend to form multisubunit complexes, which also have a rounded shape
Fibrous proteins, in contrast, span relatively large distances within the cell and in the extracellular space. Which of the proteins below is not classified as a fibrous protein?
(a) elastase
(b) collagen
(c) keratin
(d) elastin
(a)
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This image depicts Volvox aureus, a green algae. This species exists only as a colony and is a member of which supergroup?
a. Rhizaria
b. Amoebozoa
c. Archaeplastida
d. Excavata
The term_____ case is used to refer to the first patient found in an epidemiological investigation, although this individual may not be the first case of the infection in the outbreak
Fill in the blank(s) with the appropriate word(s).
Which of these characteristics is NOT found in the amphibians?
A. two-chambered heart B. small inefficient lungs C. thin moist skin D. eggs with gelatinous covering E. aquatic larvae
There are ____ separate Hadley cells in which warm air rises and cools, then falls and heats up again in great rolling patterns.
a. six b. four c. two d. eight e. ten