Today’s Goal: Reinforce the nature of Biology, chemistry of life and cellular structure and function. 1. Locate your Final Exam Study Guide and laptop.

Ch. 1 Biology in the 21 st Century  biodiversity  scientific method  independent variable  dependent variable  characteristics of life  homeostasis

Ch. 2 Chemistry of Life  Describe the properties of water  4 compound that make up life.  Know their monomers  Enzymes and chemical reactions

What is the purpose of an enzyme?

Examples of nucleic acids include A. sugars and starches B. DNA and RNA C. amino acids and fatty acids D. fats and proteins

Which of the following is not normally a function of proteins in healthy cells? A. long-term energy storage B. functioning as enzymes C. a component of cell membranes

Which of the following is an example of an organic chemical compound? A. carbon dioxide, CO2 B. sufur trioxide, SO3 C. sodium chloride, NaCl D. glucose, C6H12O6

Ch. 3 Cell Structure and Function  3 parts of the cell theory  Identify the structure and function of organelles in both plant and animal cells  Cell Membrane = homeostasis  Active vs Passive  Osmosis vs diffusion

What are the two basic types of cells? Prokaryotes and Eukaryotes

Prokaryotic or Eukaryotic?

Plant Cell or Animal Cell? Prokaryotic or Eukaryotic?

Plant Cell or Animal Cell?

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

T or F. All cells have a nucleus. Present your answers! False

What is the name of the membrane that surrounds the nucleus? Nuclear envelope or membrane

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

What do ribosomes do for the cell? Make proteins

What does the ER do for the cell? Rough – modifies proteins Smooth – makes lipids and breaks down drugs and alcohol

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

What does the Golgi apparatus do for the cell? Processes and packages proteins for export

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

What is the function of the mitochondria? Present your answers! To make energy (the power plant of the cell)

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

What do chloroplasts do for the cell? Convert energy from sunlight to chemical or food energy; perform photosynthesis

Do animal cells have chloroplasts? Present your answers! No

Outside the Cell Inside the Cell Name the Organelle? Found in Plant Cells, Animal Cells or Both?

The plasma membrane is made up of two layers of ______________. Phospholipids

Scientists call the model they have developed to represent the structure of the plasma membrane the ______ ________ model. Fluid Mosaic

What does it mean to be selectively permeable? To choose what goes in and what doesn’t

T or F. All cells have cell membranes. True

Outside the Cell Inside the Cell Enlarged Name the Organelle? Found in Plant Cells, Animal Cells or Both?

T or F. All cells have a cell wall. False – animal cells do not.

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

Name the Organelle? Found in Plant Cells, Animal Cells or Both?

What is the function of a lysosome? To digest or break down food, old organelles, or other waste

What type of molecules are inside lysosomes? (These molecules are what make the breaking down happen.) Enzymes

Animal, Plant, or Both: Ribosomes Present your answers! Both

? Name the Organelle? Found in Plant Cells, Animal Cells or Both?

T or F. All cells have cytoplasm. Present your answers! True

DNA What is it?

T or F. All cells have DNA. True

List the three parts of the Cell Theory. 1.All living things are made of cells. 2.Cells are the basic units of life. 3.All cells come from pre-existing cells.