Cellular Transport: Question Preview (ID: 11359)


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Net movement of water across a cell membrane occurs
a) From a hypotonic soultion to a hypertonic solution b) From a hypertonic solution to a hypotonic solution c) From an isotonic solution to another isotonic solution d) Through water channels in osmosis
A cell must always expend energy to trasnport substances using
a) Cell membrane pumps b) Facilitated diffusion c) Ion channels d) Osmosis
A concentration difference across space is called
a) Plasmolysis b) Concentration gradient c) Isotonic d) Phagocytosis
Which of the following is a substance that can pass directly through the cell membrane by simple diffusion?
a) Na+ ions b) Oxygen c) Cells d) NaCl
Concentration of solutes inside and outside the cell are equal when the solution is
a) hypertonic b) isotonic c) hypertonic d) both hypertonic and hypotonic
Diffusion requires
a) A cell membrane b) A difference in concentration through a space c) An aqueous solution d) All of the choices
If the molecular concentration of a substance is the same throughout space, the substance
a) Has a large concentration gradient b) Has a small concentration gradient c) Is in equilibrium d) Will undergo diffusion
Exocytosis is a
a) Type of passive transport b) Mechanism by which cells ingest other cells c) Transport process in which vesicles are formed from pounches in the cell membrane d) Way for cells to release large molecules, such as proteins
When a cell uses energy to transport a particle through the cell membrane to an area of higher concentration, it is using
a) Diffusion b) Osmosis c) Active Transport d) Endocytosis
Which of the following is NOT a characteristic of active transport?
a) It moves substances against a concentration gradient b) It requires energy from the cell c) It involves facilitated diffusion d) It relies on carrier proteins that function as pumps.
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