A build-up of pressure in this area causes the eye to change shape and the blood vessels supplying the rods and cones to collapse. This area where the pressure may rise is called the ________
A) posterior chamber B) anterior chamber C) vitreous humor D) tear glands
Answer: B
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Many bryophytes have to tolerate desiccation because ___________. (Select all that apply.)
A. they dry out with the environment B. they have little water-storage capacity C. they are restricted to sunny habitats D. they are restricted to saline habitats
Using genetic engineering techniques, which of the following would you do to a protein that normally is constitutively secreted to make it accumulate in the ER?
A) fuse it to GFP B) add an amino acid that would get a mannose-6-phosphate group added to its carbohydrate C) add a KDEL sequence near its C-terminus D) mutate one of the asparagines that is normally glycosylated to an alanine, which is not glycosylated E) None of these would cause the protein to accumulate in the ER.
Intermediate filaments are most closely associated with which of the following?
a. actin. b. microvilli. c. pseudopodia. d. keratins. e. myosin
What can be said about animal and vegetal poles?
A. Isolated vegetal cells develop as ectoderm. B. When animal pole cells are cultured with vegetal pole cells, some of the animal pole cells become mesoderm. C. Isolated animal cells develop as endoderm. D. When animal pole cells are cultured with vegetal pole cells, some of the vegetal pole cells become mesoderm.