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BEAR DOWN! EXPECT EXCELLENCE!

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Presentation on theme: "BEAR DOWN! EXPECT EXCELLENCE!"— Presentation transcript:

1 BEAR DOWN! EXPECT EXCELLENCE!

2 Macromolecules

3 Enzyme Structure and Function
Enzymes are catalysts that speed up chemical reactions. Biological Catalysts

4 Enzyme Graphs

5 Prokaryotic vs Eukaryotic Cells

6 Plant vs Animal Cell Don’t forget the 3 C’s:
cell wall, chloroplast, central vacuole

7 Cell Organelles You must be able to explain how all these organelles and their functions allow organisms to stay alive. How do they work as a system to maintain homeostasis?

8 Cell Membrane and Cell Transport

9 Passive Transport: Diffusion, Osmosis, Facilitated Diffusion
Water is pink, solute purple. Water moves hypotonic to hypertonic.

10 SB3 Organisms

11 ATP- used for cellular work created during cellular respiration in the mitochondria.
EnergyStored Energy Released + P P - P

12 Photosynthesis Equation
Reactants Products 6 CO H2O + light C6H1 2O O2 CO2 H20 Calvin Cycle Light-dependent Reactions ATP NADPH O2 Glucose

13

14 Relationship between photosynthesis and cellular respiration
Relationship between photosynthesis and cellular respiration. Know the inputs and outputs.

15 Mitosis vs Meiosis

16 Which is Better? It depends!
Asexual Reproduction advantages does not require special cells or a lot of energy can produce offspring quickly in a stable environment creates large, thriving population disadvantages limited ability to adapt face massive die-off if environment changes Sexual Reproduction advantages lots of variation within a species able to live in a variety of environmental settings able to adapt to changes in the environment disadvantages needs time & energy produce small populations

17 SB2 Genetics

18

19 DNA vs RNA Structure

20 Replication Chargaff’s Rules: A = T C = G
From beginning to the end of replication. You use one old strand of DNA to get 2 new strands of DNA. The new strands are ½ old and ½ new which is termed semi-conservative. Chargaff’s Rules: A = T C = G If there is 30% A how much T do you have? Enzymes: DNA Helicase- breaks hydrogen bonds DNA Polymerase- adds complementary bases DNA Ligase- puts the new strands back together.

21 Transcription and Translation

22 Mutations

23 Role of Meiosis in genetic variability using Mendel’s Laws
1. Law of Dominance States when alternate forms of a gene are both present the individual will express the gene that is dominant 2. Law of Segregation States that chromosomes containing the parental genes randomly segregate during meiosis producing gametes that contain one copy of each parental gene 3. Law of Independent Assortment States that genes for different traits are sorted independently from one another during meiosis. The inheritance of 1 trait does in not dependent on the inheritance of another

24 Mutations-Good or Bad??? Mutations are the ultimate source of genetic variation of living things!!!!!! Mutations can also be harmful.

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26 Taxonomy

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28 SB4 Ecology

29 Levels of Organization in the Biosphere

30 Food Chain and Food Web

31 Energy Pyramid

32 The Water Cycle

33 The Carbon Cycle images/carboncycle.jpg

34 The Nitrogen Cycle N2 Plants produce carbohydrates Ammonia
Nitrogen Fixation

35 The Nitrogen Cycle N2 Ammonia Decomposition Denitrification

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37 Plant Tropisms

38 Human Impact on the Environment
Air Pollution Acid Rain Smog Global Warming Ozone Depletion Water Pollution Eutrophication

39 SB5 Evolution

40 Rates of Evolution

41 Charles Darwin and Natural Selection

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43 Bacteria and Resistance

44 Evidence for Evolution


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