Topic 2: Cells 2.1 Cell Theory 2.1.1: Outline cell theory Living organisms are composed of cells Cells are the smallest unit of life Cells come from pre-existing cells 2.1.2: Discuss the evidence for cell theory Humans have not been able to find any living thing that is not made up of at least one cell Robert Hooke first described cells when looking at cork through a microscope Louis Pasteur´s experiments: he discovered that all cells must come fom pre-existing cells 2.1.3: State that
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1. What are the characteristics of a living organism? 2. How do you determine the TOTAL magnification of the field of view of a microscope? 3. What is homeostasis? How is homeostasis important to the survival of an organism? How is homeostasis maintained in a human? 4. What is the difference between diffusion and osmosis? 5. Define osmosis‚ hypertonic‚ hypotonic‚ isotonic solutions 6. What happens if you have a high concentration of salt water on the outside of the egg‚ yet there is very little
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Embryos Survive Stem Cell Harvest Pg. 2 Embryos Survive Stem Cell Harvest Pg. 2 Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector November‚ 2012 issue November‚ 2012 issue The CELL-O Magazine by mariana carroll and esteban cruz The CELL-O Magazine by mariana carroll and esteban cruz Pg 4 How to prevent cancer? There are a lot of ways to
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Cell Worksheet from Chaiken of Biology Cell wall cell membrane nucleus ribosome lysosome mitochondria cilia flagellum vacuoles chloroplasts 1. This organelle takes sunlight‚ water and carbon dioxide and can make organic food molecules and oxygen. Chloroplast 2. This organelle is constructed of cellulose and supports plant cells and prevents them from blowing up. Cellulos 3. This organelle contains enzymes for intracellular hydrolysis of food molecules. Lysosom 4. This organelle takes
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Why? [1] 4. (a) Name the two factors on which the buoyant force depends. [2] (b) State the relationship between the buoyant force on an object and weight of the liquid displaced by it. 5. State any two reasons for plant cells to have large central vacuole. [2] 6. List any four salient features of meristematic tissue. [2] 7. What is a super saturated solution? [2] 8.Give reason for the following:(a) A wet handkerchief is placed on the forehead of a person suffering from high fever. (b) We often
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Chapter 3 Cloze Notes CORNELL NOTES UNIT 2: Cells Directions: Create a Chapter 3: Cell Structure and Function minimum of 5 questions in this column per page I. Cell Theory (Section 3.1) (average). You can use these questions during class A. Early studies led to the development of the cell theory or tutorial to better understand a topic; or at home to better understand 1. Discovery of Cells your notes and prepare for tests and quizzes. a. Robert __________ (1665)—Used compound microscope to
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Bio 225 Chapter 4 Practice Questions 1. Which of the following is not a distinguishing characteristic of prokaryotic cells? a. Their DNA is not associated with histones. b. They have cell walls containing peptidoglycan. c. They lack membrane-enclosed organelles. d. Their DNA is not enclosed within a membrane. e. None of the above. 2. Which of the following is not true about a gram-positive cell wall? a. It contains teichoic acids. b. It protects the cell in a hypertonic environment
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folds inward bringing in fluid & dissolved substances Inclusions Metachromatic granules (volutin)‚ phosphate Polysaccharide granules Lipid inclusions Sulfur granules Carboxysomes: ribulose 1‚5-diphosphate carboxylase for CO2 fixation Gas vacuoles: protein covered cylinder Magnetosomes: Iron oxide kills H2O2 Nuclear Area: no nucleus has nucleoid Ribosomes make protein Endospores: resting‚ not growing‚ resistant to desiccation‚ heat‚ chemicals. Bacillus‚ Clostridium a. Sporulation: Endospore
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Name: __________________________ BIOLOGY EOC REVIEW PACKET Scientific Method 1. Define the following: a. Independent Variable: the variable that I change in the experiment b. Dependent Variable: the variable that I am measuring (it depends on the independent variable) c. Control Variable: variable that stay the same d. Controlled experiment: an experiment in which only one variable is changed at a time e. Hypothesis: an educated guess (If…‚ then…) 2. You have measured the
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Teacher: Mr.Vaughn Subject: Biology Dates: 9/24/12-9/28/12 Time Period: 2nd‚3rd‚ 5th DAY GPS ESSENTIAL QUESTIONS LEARNING ACTIVITY DIFFERENTIATED INSTRUCTION MATERIALS / RESOURCES ASSESSMENT MISC. MONDAY SB4a‚ SB4c–d‚ SCSh2b‚ SCSh3d‚ SCSh6d EOCT: Ecology How do environmental conditions and human activities lead to changes in communities? TW:Mini-lesson: 1) Define succession and differentiate between
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