The phospholipid molecules of most membranes have a ____
a. hydrophobic head and a hydrophilic tail
b. hydrophilic head and a hydrophobic tail
c. hydrophobic head and two hydrophobic tails
d. hydrophilic head and two hydrophobic tails
e. hydrophilic head and tail
d
You might also like to view...
A transgene is best described as
A. hard to destroy once inserted into a genome. B. hard to study because of its transposons. C. created by several of the DNA motifs. D. an inserted foreign gene. E. a result of endosymbiosis.
For eukaryotes, translation takes place in the _____
a. nucleus b. nucleolus c. cytoplasm d. plasma membrane e. nucleus and cytoplasm
The movement of materials from the lumen to the blood or lymph is ____
a. motility b. secretion c. digestion d. absorption e. elimination
Which was NOT discussed as a way to control HIV's threat to humans?
A. By utilizing theory about evolutionary trade-offs B. By learning more about how similar viruses affect dogs C. By learning more about a rare mutant human allele D. By administering multiple drugs at once to an infected person