LDL cholesterol is taken into the cell by receptor-mediated endocytosis
__________________ Indicate whether the statement is true or false.
True
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Explain how cells can adapt to colder temperatures by altering the number of double bonds in the lipids that comprise cell membranes
What will be an ideal response?What type of chemical reaction must occur for electrons to flow from one molecule to the next and supply the energy
for metabolism?
a. acid/base b. reduction/oxidation c. exothermic d. trimolecular e. phosphorylation
In order for B cells to produce antibodies and cytotoxic T cells to attack infected host cells, they must first
A. be activated by interleukins, encounter an antigen, and then develop specificity toward it. B. recognize self markers, develop specificity for the markers, and then produce clones. C. encounter an antigen, develop specificity for that antigen, and then remember the antigen. D. undergo maturation, encounter their specific antigen target, and then become activated through cytokines.
What is the purpose of DNA supercoiling?
What will be an ideal response?