Grade 8 Science

Chapter 10: The Cell is the Basic Unit of Life

Name: ______________________________

Cell Theory: all living things are made of _______________.

Definition of Cell: ____________________________________________________________________________________________________________________

Characteristics of Living Things

All living things...

1. _________________________

2. _________________________

3. _________________________

4. _________________________

Growth•A result of the cells in your body ________________________.

•New cells will grow to replace old cells that die.

Movement•A change in ____________, shape or location (______________)

Respond to Stimuli•Stimulus: anything that causes an organism to ____________.

•Maybe __________________ or ________________.

Reproduction•Producing more of the same kind (____________)

Total Magnification...

power of __________ lens x power of __________ lens

The Cell Theory states:

•The cell is the ___________________________________.

•All living things are made of one or more ______________.

•All cells come from other _______________.

Cell Organelles...

Cell membrane: •Found in both ___________ and ____________ cells

•Surrounds and ________________ the contents of the cell

•Controls the movement of materials ___________________ of the cell

Cytoplasm:•Found in both _______________________________ cells

•Jell-like fluid that in which the organelles ________________

•Helps to move materials like food to different ___________________.

Cell wall:•Found only in _____________ cells

•Tough, rigid structure that gives plant cells their ____________ shape

•Made mostly of __________________.

Nucleus:•Found in both ___________________________ cells

•Large round structure often ______________________

•Contains the _____________________

•The “___________________” of the cell

Vacuole:•Balloon-like spaces in the _____________

•_____________ materials that cannot be used right away

•Found in both _________________ cells (___________ and more numerous in animal cells)

Mitochondrion:

•_____________, bean-like structures

•Produces ______________ by breaking down food particles

•Found in both _______________________ cells.

•”Power Plant” of the cell.

Chloroplast:•Green structures that contain _______________

•Capture the sun’s energy for _______________

•Found only in ________________ cells

Dividing Cells•Necessary for growth and ___________________

•Will replace cells that are dead or in ______________________

•How does this happen?

Mitosis

•Occurs in body cells (_____________ cells) not in ______ cells (egg and sperm cells)

•______________ cells reproduce in this matter

Energy for Cells

•Cells need energy for all ________________________.

•Energy is stored in food called ______________(a type of ________)

•To release energy cells must carry out _______________________. Here the energy is converted to another form of energy.

•Takes place in the ____________________.

•Most energy is released as _________________.

•_______________ is necessary for cellular respiration.

•______________ and _________________ vapour are waste gases produced. These are removed from the cell.

Goal • Use this page to review your knowledge of organelles.

What to Do1.Look at the partially completed concept map below. The ovals contain the

concept words. Beside each arrow is a linking phrase.2.Use words from the Word List to fill in the concepts and linking phrases

that are missing from the concept map.

Word Listthe cell of the the contents of the

cellthat protects

organelles control centre mitochondrion the cellthat stores that produces chloroplast Vacuolephotosynthesis occurs

the cell

Goal • Use this page to review the Key Terms in Chapter 10.

1. Use Key Terms in Chapter 10 to label each diagram.

2.Which three Key Terms did you not use? Write a definition in your own words for each one.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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