What information does the word rectus give you about a muscle?
A. the size of the muscle fibers
B. the direction of muscle fibers
C. the attachment of the muscle fibers
D. the action of the muscle fibers
E. the shape of the muscle fibers
Answer: B
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Membrane proteins are not very soluble in water, because they possess long stretches of non-polar amino acids that are
A. too long to interact with the water molecules. B. hydrophobic. C. are transmembranal. D. hydrophilic. E. used as transport channels.
Wheat is a group of grass species. Cultivation originated in the eastern Mediterranean about 10,000 years ago
In comparison to closely related wild grasses, cultivated wheat has shorter stalks and fewer, larger seeds that are firmly attached to the stalk and are unable to disperse via wind like other grasses. Which of the following provides an explanation as to why wheat is so successful despite the loss of seed dispersal? A. Wheat seeds are dropped below the parent plant and will grow the following season. This maintains the worldwide distribution of wheat. B. Wheat seeds are collected and dispersed by humans. Their worldwide distribution increases every time a new field of wheat is planted. C. Wheat seeds have evolved to be consumed by animals. Wheat seeds no longer rely on wind as its dispersal mechanism. D. Wheat seeds are not required for reproduction. Because it is a grass species, it has asexual reproduction.
Which of the following causes a foodborne intoxication?
A. Staphylococcus aureus B. E. coli O157:H7 C. Clostridium botulinum D. Mycobacterium tuberculosis E. Staphylococcus aureus, E. coli O157:H7, AND Clostridium botulinum
A food web is
A. a long food chain. B. several food chains that intersect. C. a trap to catch food. D. a complicated series of passages of energy via the first law of thermodynamics.