Cell Size and Diffusion

Select all that apply: All organisms need to be able to efficiently:

• Obtain oxygen & nutrients from environment

• Remove waste

• Maintain homeostasis

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Cells are many different sizes and shapes.

• True

• False

Cells want to _________ their efficiency at carrying out life processes

• reduce

• maximize

• slow down

• prevent

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Most cells are ______ because it maximizes their efficiency.

• Small

• Large

Select all that apply: Cells can’t be too big because . . .

• Need to take in nutrients and release waste

• Need to move materials quickly in/out

• Inefficient if cells are large

The larger the cell, the _______ it will take to transport materials, process nutrients, or release wastes.

• Longer

• Shorter

Cells are most efficient when they are _____.

• Small

• Large

• Fat

• Skinny

Surface area of a cell refers to

• the area exposed to the external environment.

• the amount of space inside of the cell.

Volume refers to

• the area exposed to the external environment.

• the amount of space inside of the cell.

• how loud your music is

Cells want a _______ SURFACE AREA and a ______VOLUME.

• Small; Small

• Large; Large

• Large; Small

• Small; Large