Podcast
Questions and Answers
Which part of the cell serves as a barrier or boundary?
Which part of the cell serves as a barrier or boundary?
- Mitochondria
- Cell nucleus
- Endoplasmic reticulum
- Plasma membrane (correct)
What is the function of the plasma membrane?
What is the function of the plasma membrane?
- To store genetic information
- To control traffic into and out of the cell (correct)
- To produce energy for the cell
- To synthesize proteins
What is selective permeability?
What is selective permeability?
- The ability of the plasma membrane to allow only certain substances to cross (correct)
- The ability of the plasma membrane to allow all substances to cross
- The ability of the plasma membrane to prevent all substances from crossing
- The ability of the plasma membrane to control the cell's shape
Why is the ability of the cell to discriminate in its chemical exchange with the environment important?
Why is the ability of the cell to discriminate in its chemical exchange with the environment important?
What makes selectivity possible in cell membranes?
What makes selectivity possible in cell membranes?
True or false: The plasma membrane surrounds the contents of a cell and serves as a barrier or boundary?
True or false: The plasma membrane surrounds the contents of a cell and serves as a barrier or boundary?
True or false: The plasma membrane exhibits selective permeability?
True or false: The plasma membrane exhibits selective permeability?
True or false: The ability of the cell to discriminate in its chemical exchange with its environment is fundamental to life?
True or false: The ability of the cell to discriminate in its chemical exchange with its environment is fundamental to life?
True or false: The plasma membrane and its component molecules make selectivity possible?
True or false: The plasma membrane and its component molecules make selectivity possible?
True or false: Cell membranes control the passage of substances?
True or false: Cell membranes control the passage of substances?
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