Answer:
The correct answer is A. control the movement of substances in and out of the cell.
Explanation:
All cell membranes are made up of lipids and proteins. Lipids are organized in two closely adjoining sheets that form a lipid bilayer. This bilayer provides the basic structure of the membrane and acts as a permeability barrier (impermeable) for most water-soluble molecules. Cells live and grow by exchanging molecules with the surrounding environment and the plasma membrane acts as a barrier that controls the transit of molecules into and out of the cell. As the interior of the membrane (the lipid bilayer) is hydrophobic, the membrane tends to block the passage of almost all water-soluble molecules (which dissolve in water). Protein molecules, which are normally “dissolved” in the lipid bilayer, act as mediators or facilitators of almost all membrane functions, either by transporting specific molecules through it or by catalyzing membrane-associated reactions, such as synthesis of ATP.
Answer:
Which best describes the author's purpose in “Paul Revere's Ride”? to prove to readers that Paul Revere deserves more respect. to persuade readers that Paul Revere caused the American Revolution. to instruct readers about how to send secret signals like Paul Revere. to educate readers about Paul Revere's impact on
Answer: Community policing
Explanation:
Community policing referred to as or known as a philosophy consisting of full service policing, under this a single officer tends to patrol and work in same area or neighborhood on a much more permanent basis, i.e. from a decentralized organization, thus working under proactive partnership in order to solve and identify problems.
Answer:
Case-Control Study
Explanation:
A case–control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute
The Federalists of the late 18th early 19th century and the Whigs of the early 19th century.
