Bio Chapter 3

Muscle cells need abundant ATP for muscle contractions. Which organelle must commonly be found in muscle cells to accommodate ATP production?

Mitochondrion

What is required for simple diffusion to occur?

concentration gradient

Cellular material located outside the nucleus yet inside the plasma membrane is the ________.

cytoplasm

What organelle synthesizes most of the ATP used by cells?

mitochondria

Where is the genetic code stored?

nucleus

Groups of cells that are similar in both structure and function are known as ________.

tissues

If someone sitting at the other end of a bar is smoking, you may still breathe in some of the smoke. What process involves the movement of the smoke away from its source?

Diffusion

A cell is isotonic to the surrounding 4% dextrose solution. If the cell is moved to a 6% dextrose solution, predict how the cell responds.

The cell will shrink.

________ connective tissue is commonly called fat.

adipose

The three major components of the cytoplasm are the ________.

cytosol, organelles, and inclusions

Nutrients and ions can pass directly from cell to cell through special membrane junctions known as ________.

gap (communicating) junctions

A needle piercing through a plasma membrane would travel through ________.

two layers of proteins embedded with some phospholipids