Hydrophobic interactions of the tails of
phospholipids produce
a. a lipid bilayer.
b. hydrolysis of the fatty acids.
c. a protein membrane.
d. a cytoskeleton.
e. a nonpolar membrane
A
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Short single-stranded pieces of DNA called ________ attach to a DNA template to serve as the beginning site of DNA replication
Fill in the blank(s) with correct word
Leak channels make a neuronal membrane at steady state approximately ________ permeable to K+ than to Na+
A) half as B) equally C) twice as D) 10 times more E) 100 times more
If you went diving in a freshwater lake, you would see very few rooted aquatic plants after a certain depth. What limits plant growth in deeper water?
A. cold temperatures B. a lack of nutrients C. a lack of light D. too many herbivores E. a lack of oxygen
The method by which cell components are separated by centrifugation at progressively higher speeds is called _______ centrifugation.
a. differential b. velocity c. density-gradient d. equilibrium