Protective layers outside the bacterial cell membrane include:
a. cell walls only
b. capsules only
c. envelopes only
d. cell walls and plasmids
e. cell walls and capsules
e
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Organisms in an ecosystem are linked to their physical environment through the cycling of _______ and the transfer of _________
A. energy; nutrients B. sunlight; water C. nutrients; energy D. water, sunlight E. nutrients; water
In plants with only primary growth, the epidermis is not
A. one cell thick. B. the outer protective coating of the plant. C. produced by the protoderm. D. covered by a waxy layer that constitutes the cuticle. E. covered with bark.
If one person in 50 is a carrier of an autosomal recessive disorder in a population, the chance that an unrelated man and woman are both carriers is
A) 1/50. B) 1/100. C) 1/1000. D) 1/2500.
What is the name of a photograph of a specimen obtained with a microscope?
A. dermatome B. negative C. chromatograph D. micrograph E. thermograph