What are the predominant bacteria in the vagina?
a) Streptococci
b) Lactobacilli
c) Gram-negative anaerobes
d) Staphylococci
Ans: b) Lactobacilli
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Most vegetable oils are:
a. liquid at room temperature and saturated b. unsaturated and solid at room temperature c. found only in animals d. complex carbohydrates e. liquid at room temperature and unsaturated
What is a Hartig net?
a. an ecosystem containing lichen that act as both producers and decomposers b. layer of fungi that surround roots, forming a thick exterior sheath *c. formation of hyphae enveloping the outer layer of root cells inside the mantle d. sticky, hair-like fungus that hang from tree branches to catch and digest insects 15. What are endophytes? a. Decomposing fungi that live on rotting plant and animal matter, breaking it down. b. Pathogenic fungi that live inside animals and destroy tissues by releasing toxins. c. Mutualistic fungi that live inside plants and provide their hosts with various benefits. d. Symbiotic fungi that live on tree bark without disturbing or benefitting their hosts.
In the section "Investigating Life: Evolving Backwards," how did the scientists test the hypothesis?
A. They examined decrease in length of hind limbs in marine snakes. B. They compared anatomy of fossil ancestors and extant snakes. C. They compared anatomy of snakes, other reptiles, mammals, and birds. D. They examined decrease in length of hind limbs in land-dwelling snakes.
Carbon:
A) has no vacancies in its outermost shell. B) can form up to 4 bonds with other atoms. C) can't form bonds with other atoms of carbon. D) can hold 4 electrons in its first electron shell. E) is the least reactive of all elements.