TOPIC: Cells AIM: Describe the cell theory. Do Now: Measurement Review

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The Metric System The scientific system of measurement

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TOPIC: Cells AIM: Describe the cell theory. Do Now: Measurement Review (Take out yesterday’s notes) HW: 4 ?’s on bottom of microscopic measurement sheet

1. The amount of matter an object has is called mass (2) volume (3) milliliters (4) density 2. The SI unit of mass is the ______. cubic meter (2) kilogram (3) liter (4) meter

3. In the metric system, the height of a building would be given in centimeters (2) milliliters (3) meters (4) millimeters

4. Which instrument would be used to obtain the volume of a glass of water? triple beam balance (2) graduated cylinder (3) beaker (4) metric ruler

5. An object has a length of 2 cm, a width of 3 cm, and a height of 4 cm. What is it’s volume?

6. Which measurement of an average classroom door is closest to 1 meter? its thickness its width its height

The basic unit of length in the metric system is the kilogram gallon liter meter

Carrie is working with a graduated cylinder as shown in the diagram Carrie is working with a graduated cylinder as shown in the diagram. What should Carrie do to get a volume of 12.5 milliliters (mL) of liquid in the graduated cylinder? Add 0.5 mL of liquid Add 1.5 mL of liquid Remove 0.5 mL of liquid Remove 1.5 mL of liquid

Which pieces of laboratory equipment could be used in the laboratory to measure density? 1. A and B 2. B and D 3. B and C 4. B and D

The diagram represents a thermometer. The temperature reading on the thermometer would most likely indicate the temperature of a human body on a very hot summer day at which water freezes at which water boils of a human with a very high fever

Which material has the greatest density? 1. water 2. iron The diagram shows equal masses of four different earth materials at different temperatures. Which material has the greatest density? 1. water 2. iron 3. granite 4. dry air .00012 g/cm3 2.7g/cm3 1.0 g/cm3 7.7 g/cm3

Excretion Removal of cellular (metabolic) waste

Locomotion Ability of an organism to move

Factors that influence metabolism Gender Age

Exercise Diet Drugs and alcohol

Carry out life processes Make up living things (ORGANISMS) Cells

Just like bricks make up a brick house, cells make up an organism

The Cell Theory – a timeline Robert Hooke ( 1665)

Cell Theory 1. Cells are the basic unit of structure in all living things. (Living things are made of cells)

2. Cells are the basic unit of function of all living things (They carry out life processes) 3. All cells come from pre-existing cells.

Exceptions to the Cell Theory Viruses: not composed of cells contain genetic information reproduce inside host cell

Virus do not reproduce by division because they are not cells.

Did you know… The first virus was found in both plants and animals 100 years ago. The common cold is a type of virus. Viruses can be treated with antiviral drugs.

Let’s summarize… What do all organisms consist of? Explain the three parts of the cell theory. Explain why viruses are exceptions to the cell theory.

Review: Which statement is not a part of the cell theory? Cells are the basic unit of structure of living things. Cells are the basic unit of function of living things. Cell parts such as chloroplasts are self-replicating. Cells come from preexisting cells.

2. The cell theory states that all living things are made up of organisms 2. cells 3. tissues 4. proteins

3. Which choice is NOT part of cell theory? Cells are the basic units of life. All living things are made of one or more cells. All cells come from other living cells. New cells have the same nuclei as those of pre-existing cells.