Why does active transport require an energy supply? C A Water molecules move from a region of higher water potential to a region of lower water potential. B Solute molecules move from a region of lower water po
How does water move across the cell membrane? How do organelles work together for the cell to function? What does cell theory explain? How do cell parts work together? How are cells able to transport large molecules? How are cells organized?
c) active transport. d) endocytosis. e) facilitated diffusion. What is the name of the process by which large molecules are packaged and transported out of a cell? Large molecules, such as glucose, that cannot cross the lipid bilayer can still move across the membrane through a type of ...
Does facilitated diffusion require the cell to expend energy to move substances? Why or why not? How are dietary lipids absorbed into the absorptive cells of the small intestine? A. simple diffusion B. facilitated diffusion C. secondary act...
What is the movement of molecules or ions across a cell membrane that requires the expenditure of energy called? a. Passive transport. b. Active transport. c. Isotonic transport. d. Hypotonic transport. e. Osmosis. Large, hydrophilic solutes move across membranes against...
Blood-CNS barriers protect the CNS from circulating immune cells and damaging molecules. It is thought barrier integrity becomes disrupted with aging, cont
A family of freshwater algae, within the kingdom Plantae. Members of this family form large macroscopic filaments. Pectin A carbohydrate polymer (a polysaccharide) that is part of the cell wall in walled cells of many organisms, such as algae and plants; pectin crosslinks can play a part in...
flexible chains of molecules that are the construction equipment of life. Enzymes weld together protein, starch, and DNA chains; push needed molecules through cell membranes; repair and regulate DNA, and do essentially all the building, transport, and disassembly that go on within living things. ...
The most obvious character that distinguishes vertebrates, cephalopods and insects from other animals is that they each use muscle power, albeit in slightly different ways, to enable them to move fast. This has two relevant consequences. The first is that, unlike all the other animals that have...
Cellular Transport: Cells can use two methods to move molecules into and out of the cell. When the cell uses energy to move molecules, it is said to be using active transport. Passive transport is a type of cellular transport that does ...