Chapter 5 Introduction to Cells

Which tool could help you see a plant cell?

• a filter
• a microwave
• a microscope
• an electromagnet

Which of the following statements is NOT part of the cell theory?

• All cells are produced from other cells.
• Cells can absorb food and oxygen.
• All living things are composed of cells.
• Cells are the basic units of structure and function in living things.

Which cellular structures are found in plant cells but NOT in animal cells?

• chloroplast and cell wall
• Golgi apparatus and vacuole
• mitochondrion and ribosome
• endoplasmic reticulum and nucleus

What organelle in a cell contains DNA and directs cell activities?

• nucleus
• endoplasmic reticulum
• mitochondria
• ribosomes

A certain cell can no longer package and release materials out of the cells. Which of the cell's organelles is not working?

• nucleus
• mitochondria
• golgi apparatus
• endoplasmic reticulum

A substance that can not be broken down into a simpler elements is a :

• particle
• element
• carbohydrate
• compound

What is the function of a cell wall?

• to protect and support the cell
• to perform different functions in each cell
• to prevent water from passing through it
• to prevent oxygen from entering the cell

In order for an organism to develop specialized tissues, the organism must be which of the following?

• a plant
• an animal
• unicellular
• multicellular

Starch is an example of a:

• nucleic acid
• lipid
• protein
• carbohydrate

Water makes up _________ of the human body.

• 2/3
• 1/3
• 1/2
• 2/4