What kind of membrane protein penetrates into the hydrophobic part of the lipid bilayer?
a) phosphatidylcholine
b) lipid-anchored protein
c) galactocerebroside
d) integral protein
e) peripheral proteins
Ans: b) lipid-anchored protein
Biology & Microbiology
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Vascular cambium (wood) evolved independently in several different groups of vascular plants
A. true B. false
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The ____ layer of the mammalian gut performs peristalsis
a. mucosa b. muscularis c. serosa d. submucosa e. submucosa and muscularis
Biology & Microbiology
Spherical bacteria that occur in clusters are ________
A) streptococci B) bacilli C) spirochetes D) staphylococci
Biology & Microbiology
A population of worms is growing exponentially in a compost heap. Thirty days ago there were 400 worms and now there are 800 . How many worms will there be thirty days from now, assuming conditions remain constant?
What will be an ideal response?
Biology & Microbiology