17 Questions
What is the term used to describe a cell membrane that only allows certain molecules to move across?
Semipermeable
Which type of cell transport requires energy to move substances across the membrane?
Active transport
What is the primary component of the cell membrane?
Phospholipid bilayer
In which state is an animal cell considered to be in equilibrium with its surroundings?
Isotonic
Which structure in the cell membrane helps substances that are too big to pass through?
Transport proteins
What type of transport does not require energy to move substances across the cell membrane?
Diffusion
Which type of transport involves the movement of molecules from an area of high concentration to an area of low concentration with no energy required?
Facilitated diffusion
What is the process called when water diffuses across a selectively permeable membrane from high concentration to low concentration?
Osmosis
In which type of transport does a molecule move from low concentration to high concentration against the concentration gradient?
Protein pump
Which process involves the cell engulfing something?
Endocytosis
Which transport mechanism involves the cell releasing something outside?
Exocytosis
What does passive transport NOT require?
Energy
Which process involves the movement of molecules across the phospholipid bilayer with the help of a transport protein?
Simple diffusion
What happens to an animal cell placed in saltwater?
It shrivels
In which state is an animal cell when placed in distilled water?
Hypotonic
Which type of transport moves molecules against the concentration gradient?
Active transport
What is the main characteristic of osmosis?
Movement of water from high concentration to low concentration
This study guide covers key concepts related to cell/plasma membrane and transport, including concentration gradient, active transport, and passive transport. Learn about different types of passive transport like simple diffusion and how substances move across the cell membrane.
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