Unit 3 TestReview

Which are the correct labels for the environments of the cells below, from left to right?

• Isotonic, Hypertonic, Hypotonic
• Hypertonic, Hypotonic, Isotonic
• Hypertonic, Isotonic, Hypotonic

A red blood cell will shrink in size when placed in a more concentrated salt solution because of the passive process called

• biosis.
• endocytosis
• mitosis
• osmosis

On which of the following organelles are proteins assembled?

• Mitochondria
• Ribosomes
• Chloroplasts
• Lysosomes

This organelle controls most cell activities and contains DNA.

• Mitochondria
• Ribosomes
• Nucleus
• Golgi bodies

Glucose is formed by plants when they carry out photosynthesis. Glucose is an example of a

• protein.
• carbohydrate (simple and complex sugars)
• lipid.
• nucleic acid.

Which macromolecules are formed by the smooth endoplasmic reticulum and are used for long-term energy?

• Lipids
• Proteins
• Carbohydrates
• Nucleic Acids

_________ produce proteins by following coded instructions that come from the nucleus of the cell.

• Actins
• Flagella
• Microtubules
• Ribosomes

In the diagram, the arrow is pointing to a small digestive organelle filled with enzymes. Its function is to break down old cell parts or bacteria. It's commonly referred to as the "garbage man" of the cell. This organelle is a

• Golgile.
• lysosome.
• ribosome.
• vacuole.

Cells often store materials like water, salts, proteins, and carbohydrates in sac-like structures called...

• chloroplasts.
• lysosomes.
• mitochondria.
• vacuoles.

What is the function of a cell's selectively permeable membrane?

• It helps the cell to manufacture proteins.
• It regulates the amount of ATP the cell produces.
• It regulates what materials enter and leave the cell.
• It packages and stores most of the material in a cell.