EBK BIOLOGY
5th Edition
ISBN: 9780100667976
Author: Maier
Publisher: YUZU
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Chapter 3, Problem 8LTB
Summary Introduction
Introduction:
The cell membrane or plasma membrane is a biological membrane. It separates the internal cellular substances from its outside environment. It is selectively permeable that means it allows only some of the molecules to enter and exit. Osmosis is the diffusion of molecules through a semi-membrane.
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Osmosis is _________________
movement of water down its concentration gradient using a protein channel
movement of materials against their concentration gradient
movement of one substance against, and one substance down their concentration gradients
movement of molecules from high concentration to low concentration using no protein channels
movement of materials down their concentration gradient using a protein channel
The transportation of relatively small particles or liquids into the cell that are too big or unable to pass through a transport protein is best described as ________.
pinocytosis
phagocytosis
exocytosis
facilitated diffusion
diffusion
Active transport is ____________
movement of water down concentration gradient using a protein channel
movement of materials against their concentration gradient
movement of one substance against, and one substance down their concentration gradients
movement of molecules from high concentration to low concentration using no protein channels
movement of materials down their concentration gradient using a protein channel
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- If a cell has more concentration of solutes inside than outside, it is in a(n) __________ environment. Hypertonic Mesotonic Hypotonic Isotonicarrow_forwardWhat is movement of cell against concentration gradient is called: osmosis active transport diffusion passive transportarrow_forwardIf a cell is placed in a solution that has the same concentration of solutes as in its cytoplasm, the solution is referred to as: O Isotonic Hypertonic O Hypotonic Osmoticarrow_forward
- Which of the following active transport mechanisms moves solid particles towards the interior of the cell? Group of answer choices phagocytosis pinocytosis vesicular transport exocytosisarrow_forwardCan you please answer all of the parts of this questionarrow_forwardFill in the blanks with the following words: diffusion, endocytosis, solute pump, osmosis. The type of active transport in which sodium and potassium are pumped across a membrane using ATP is called a This passive process is where water moves in and out of a cell The type of passive process in which molecules move across the plasma membrane down a concentration gradient is called This process is where the cell engulfs extracellular substances by phagocytosis or pinocytosisarrow_forward
- A plant cell placed into a hypertonic solution will experience which of the following effects? plasmolysis expulsion of the excess water using its contractile vacuoles hemolysis entrance of excess water through its contractile vacuoles turgidityarrow_forwardDiffusion requires a membrane to occur. True Falsearrow_forwardA cell's energy is used in the process of: osmosis active transport diffusion passive transportarrow_forward
- Identify whether each method of membrane transport is passive or active by dragging the label to the correct boxarrow_forwardA substance moving across a membrane against a concentration gradient is moving by: active transport facilitated diffusion passive transport osmosisarrow_forwardDescribe the movement of the solute and explain why this is considered passive transport.arrow_forward
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