unit 2 biology study guide

Front

Organelles in prokaryotic cells include the

Back

None of the above

Front

All cells have the following:

Back

Cell membrane; cytoplasm; and ribosomes

Front

How does the model explain that cell (plasma) membranes are selectively permeable?

Back

Specific molecules will pass through the plasma membrane, while other molecules cannot pass through.

Front

Red blood cells were placed in three types of solutions. Which of the cells were placed in an isotonic solution?

Back

Cell B since water is moving in and out of the cell at the same rate.

Front

In an investigation on tonicity, a group of students drop salt water on this cell below. What will the students most likely observe?

Back

The plant will shrink. This is because the salt water is a hypertonic solution which causes the water to exit the plant cell.

Front

At equilibrium, __.

Back

Molecules move across the membrane at the same rate in both directions.

Front

Which type of cellular transport would be most affected by damage to mitochondria?

Back

Active transport

Front

There are two types of cellular transport. In active transport, the molecules are moving [with/against] the concentration gradient and this movement [does/does not] require ATP energy. This is because the molecules are moving from an area of [low/high] concentration to an area of [low/high] concentration of molecules.

Back

against, does, low, high

Front

Why is an animal cell that is surrounded by fresh water likely to burst (lyse)?

Back

Water moves into the cell via osmosis.

Front

A solution concentration is the concentration of the solute and the concentration of the solvent. Each beaker contains a cell with 10% salt concentration. The concentration of the salt in each beaker is shown at the top of each beaker. Which beaker contains a hypotonic solution?

Back

Beaker # 2