Unit 5 Cells Review

Which cell structure contains the cell’s genetic material and controls many of the cell’s activities?

• organelle

• nucleus

• cell envelope

• cytoplasm

Which organelle makes proteins using coded instructions that come from the nucleus?

• Golgi apparatus

• mitochondrion

• vacuole

• ribosome

Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?

• Golgi apparatus

• mitochondrion

• endoplasmic reticulum

• chloroplast

Which of the following is a function of the cell membrane?

• breaks down lipids, carbohydrates, and proteins from foods

• stores water, salt, proteins, and carbohydrates

• keeps the cell wall in place

• regulates which materials enter and leave the cell

The thin, flexible barrier around a cell is called the

• cell envelope

• cytoplasm

• cell membrane

• cell wall

Diffusion is the movement of particles from

• an area of low concentration to an area of high concentration.

• an area of high concentration to an area of low concentration.

• an area of equilibrium to an area of high concentration.

You look through a microscope at a cell and see a nucleus, mitochondria, chloroplasts, and a cell wall. What type of cell has all of these parts?

• prokaryotic cell

• fungal cell

• animal cell

• plant cell

Muscle cell are full of protein fibers, so they must have this organelle to make the fibers:

• ribosomes

• mitochondria

• membranes

• nucleus

Some students are performing an experiment on cells to see how the environment affects a cell. According to figure 1, which solution would cause **no change** in the size or mass of the cell?

• beaker A

• beaker B

• beaker C

If a cell contains 50% water and the environment contains 50% water, then water will most likely _______.

• move in and out of the cell, because small molecules can pass through easily

• only diffuse into the cell, because transport proteins are one-way tunnels

• only move out of the cell, because small molecules can pass through easily

• no movement would occur