Evidence for the evolution of plants from a feshwater algal species is supported by all of the following EXCEPT:
A. both green algae and plants store excess carbohydrates as starch and have cellulose in their cell walls.
B. plants and green algae share a significant number of structural similarities in root, stem, and leaf structures.
C. molecular evaluation of ribosomal RNA provides evidence of the evolutionary relationship of plants and green algae.
D. both green algae and plants have chlorophylls a and b and various accessory pigments.
Answer: B
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The X and Y chromosomes ____
a. are responsible for autosomal recessive inheritance b. will lead to color-blindness in all carriers c. are found paired with all 22 autosomal chromosomes d. are responsible for albinism e. play major roles in determining the sex of an individual
UV light is necessary for the production of which vitamin?
a. folate b. vitamin A c. vitamin C d. vitamin D e. vitamin E
The adrenal cortex produces
a. aldosterone. b. epinephrine. c. norepinephrine. d. testosterone. e. glucagon
How does a scientist get the corrected version of a gene into the cells of a gene therapy patient?
A) It is delivered with a modified virus. B) It is directly injected with a microscopic hypodermic needle. C) It is attached to a food molecule, such as glucose and is then ingested by the individual. D) It is attached to the surface of microscopic beads and is then shot into the individual (i.e., shotgun method).