Bio 1 Cells Review

In many cells, the structure that controls the cells activities is the

• cell membrane.

• organelle.

• nucleolus.

• nucleus.

Despite differences in size and shape, at some point all cells have DNA and a

• cell wall.

• cell membrane.

• mitochondrion.

• nucleus.

What distinguishes a eukaryotic cell from a prokaryotic cell is the presence of

• a cell wall.

• a nucleus.

• DNA.

• ribosomes.

In eukaryotic cells, chromosomes carrying genetic information are found in the

• ribosomes.

• lysosomes.

• nucleus.

• cell membrane.

The organelles that break down lipids, carbohydrates, and proteins into small molecules that can be used by the cell are called

• vacuoles.

• lysosomes.

• ribosomes.

• microfilaments.

Cell membranes contain a central bilayer formed by

• lipids.

• protein pumps.

• carbohydrates.

• proteins.

The movement of water molecules across a selectively permeable membrane is known as

• exocytosis.

• phagocytosis.

• endocytosis.

• osmosis.

A substance that moves by passive transport tends to move

• away from the area of equilibrium.

• away from the area where it is less concentrated.

• away from the area where it is more concentrated.

• toward the area where it is more concentrated.

Which of the following is true of all single celled organisms?

• They are all prokaryotes.

• They are all bacteria.

• They all reproduce.

• They all have a nucleus.

A tissue is composed of a group of

• similar cells.

• related organelles.

• organ systems.

• related organs.