The protein projections on the surface of a virus that are involved in attachment to the host cell are called
A. suckers.
B. pili.
C. cilia.
D. spikes.
E. hooks.
D
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Fats, oils, and waxes are called:
a. sugars. b. polysaccharides. c. lipids. d. proteins. e. monomers.
Which is the correct horizontal pathway of water from the soil to the center of the root?
a. epidermis ? root hair ? cortex ? pericycle ? endodermis ? xylem b. epidermis ? cortex ? pericycle ? endodermis ? phloem ? xylem c. root hair ? epidermis ? cortex ? endodermis ? pericycle ? xylem d. root hair ? cortex ? endodermis ? pericycle ? epidermis ? xylem e. root hair ? epidermis ? endodermis ? cortex ? xylem ? phloem
The Panama Canal was completed in 1914, and its depth is about fifty feet. After 1914, snapping shrimp species from which habitats should be most likely to form hybrids as the result of the canal?
A) A5 and B5 B) A3 and B3 C) A1 and B1 D) A1-A3 and B1-B3 have equal likelihoods of harboring snapping shrimp species that can hybridize.
Identify and provide specific examples of the classes of macromolecules that are associated with life.
What will be an ideal response?