What are the differences between peripheral and integral membrane proteins?
What will be an ideal response?
Ans: Peripheral: Amino acids at the protein surface mostly have hydrophilic R groups; the proteins are not embedded in the lipid bilayer. Integral: Proteins have regions of hydrophilic and hydrophobic amino acids on their surfaces; the proteins are at least partly embedded in the lipid bilayer
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CAM (crassulacean acid metabolism) plants such as cacti differ from standard C4 plants such as corn in which of the following way?
A. CAM plants minimize photorespiration whereas C4 plants do not. B. CAM plants use both mesophyll and bundle sheath leaf cells for photosynthesis whereas C4 plants do not. C. CAM plants are more efficient at producing sugar than C4 plants regardless of environmental conditions. D. CAM plants produce a 4-carbon molecule in the first step of carbon fixation, but C4 plants do not. E. CAM plants are limited to producing CO2 for the Calvin cycle during the day, while C4 plants produce CO2 for the Calvin cycle both during the day and at night.
Which of the following was NOT a common curriculum tool in colonial New England?
A. Bible B. McGuffey Readers C. New England Primer D. Horn Book
The so-called robust australopithecines are:a
the earliest members of the genus Australopithecus. b. the line that gave rise to the genus Homo. c. the hominids that developed from Ardipithecus. d. a dead-end branch in hominid evolution. e. an extinct line of hominoids that existed about 6?7 million years ago.
What anabolic reaction is the opposite of what happens during protein catabolism?
A. Amino acid biosynthesis B. Lipid biosynthesis C. Gluconeogenesis D. Nucleotide biosynthesis