Membrane anchors set up the geography of a cell.
a. true
b. false
Ans: a. true
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________ is the process through which cells can detect and respond to signals in their extracellular environment.
A. Cell sensation B. Cell communication C. Reception D. Transduction E. Sensory response
Molluscs with a tubular shell and sheath foot are:
a. scaphopods. b. gastropods. c. bivalves. d. cephalopods. e. nudibranchs.
When one cell goes through cell division, it produces ________.
A. four identical cells B. two different cells C. two identical cells D. four different cells
Which of the following statements about thymine dimers is false?
A) Patients with xeroderma pigmentosum have faulty DNA repair mechanisms. B) They are repaired by excision repair. C) They can be produced by exposure to UV light. D) They are repaired by one enzyme that can clip out, lay down new nucleotides, and seal the gap. E) If resulting mutations accumulate, it can result in cancers.