Mid-Unit 3 Test

What are the three parts of the cell theory?

• Cells are the basic unit of life

• Cell are produced from other cells

• All living things are made from cells

• All cells are the same

What is the function of the nucleolus

• to make ribosomes

• to make proteins

• the control center

• clean the cell

What is the highest level of organization in multicellular organisms?

• cells

• tissues

• organs

• systems

True or False

Prokaryotic cells contain membrane-bound organelles.

• true

• false

What forms the bilayer of the cell membrane?

• carbohydrates

• proteins

• phospholipids

• enzymes

True or False

Diffusion is the movement of particles from high concentration to low concentration.

• true

• false

Osmosis is the process that

• moves solutes across the cell membrane

• moves solutes up the concentration gradient

• moves water across the cell membrane

• moves water up the concentration gradient.

This is when molecules leave the cell

• diffusion

• exocytosis

• endocytosis

• osmosis

What is the function of the nucleus?

• to make proteins

• the control center of the cell

• to detoxify the cell

• to transport proteins

The inner mitochondria consists of many folds. What do these folds do?

• provide structure and support

• decrease surface area so diffusion can't occur

• increase surface area to allow more space for ATP synthesis

• house enzymes and other substances.