Which of the following is a consequence of smoking?
a. All of these choices are consequences of smoking
b. Increased susceptibility to colds.
c. Cilia in the respiratory tract are paralyzed.
d. Increased production of pathogens.
e. White blood cells are destroyed.
a
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Which of the following is true of movement
through the phloem?
a. movement through phloem is through live cells b. movement between sieve tube members is via plasmodesmata c. movement through the phloem is not necessarily up d. the phloem cells through which movement occurs are non-nuclear e. all of these are true about movement through the phloem
At high population density, __________ is favored, with organisms investing more time and energy in fewer, higher
quality offspring. Fill in the blank(s) with the appropriate word(s).
The layer of the skin that contains hair follicles, sweat glands, and blood vessels is the dermis.
a. true b. false
A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The seeds of all of the offspring are yellow. Why?
A) The yellow allele is recessive to the green allele. B) All of the offspring are homozygous yellow. C) The yellow allele is dominant to the green allele. D) The alleles are codominant.