Presentation on theme: "CPS Beechdrops (Epifagus virginiana) are leafless"— Presentation transcript:
1CPS Beechdrops (Epifagus virginiana) are leafless plants that lack chlorophyll. Beechdrops gettheir nourishment from the roots of beech trees, which reduces the amount of nutrients available to the trees themselves. This interaction is best described as —A. predatoryB. parasiticC. commensalisticD. mutualisticCPS
2CPS According to this food web, which of these is an omnivore? A. CaterpillarB. MouseC. AntD. Fly larva
3Which molecule provides most of the energy used to drive chemical reactions in cells? CPSA. DNAB. RNAC. ATPD.ADP
4PHOTOSYNTHESIS To create Light Purpose: Plants use light to create sugars
5Scientists Van Helmont: plants gain most of mass from H2O. Priestly: Plants release O2.Ingenhousz: Used Priestly’s experiment and found that plants need sunlight to make O2.
7What is photosynthesis? The process in which plants convert light energy into chemical energy (food glucose).Happens in the chloroplast
8Photosynthesis Equation It will be on every quiz and your unit test!Carbon dioxide + water + E → glucose + oxygen6CO2 + 6H2O + E → C6H12O6 + 6O2(reactants) (products)lightenzymestakes inproducesLightEnzymes
9Chloroplast Thylakiod: sac like membranes Stroma: space between thylakiodsGrana: stack of thylakiods
10Within the chloroplast pictured above are disc like structures arranged in stacks called grana. The stack like membranes contains pigments that absorb light energy. The individual disc-like shaped structures labeled A are called ____.CPSAA. chlorophyllB. thylakoidsC. stromaD. Golgi apparatusB
11Which word summary word equation best describes a process that directly requires light energy? CPSA. water + carbon dioxide glucose + oxygenB. glucose + glucose maltose + waterC. glucose alcohol + carbon dioxide + ATPD. water + glucose oxygen + carbon dioxide ATP
13Water then travels to each cell through a process known as OSMOSIS. Water enters the plant through the roots and travels up to the leaf through the veins.Water then travels to each cell through a process known as OSMOSIS.
14Stomata are the little “holes” on a plant leaf that regulates the gas exchange in plants.
15Carbon dioxide enters the leaf through the stomata. Carbon dioxide then travels to each cell through a process known as Diffusion.
16Which structure regulates gas exchange during the processes of photosynthesis and respiration? CPSA. QB. RC. SD. T
17Products and Reactants in Photosynthesis Reactants- Carbon Dioxide and WaterProducts- Glucose and OxygenThere is NO ATP gain during photosynthesis!*****Remember the ATP Cycle*****
18Light and PigmentsPhotosynthesis depends on pigments -proteins that absorb some light and reflect others.Examples: chlorophyll and carotene
19Carotene reflects orange light. Light and PigmentsChlorophyll absorbs blue, violet, and red light, but reflects green light.This is why plants are green.Carotene reflects orange light.
20Photosynthesis overview: Figure 8-7 Photosynthesis: An OverviewSection 8-3LIGHTO2Sugars(glucose)CO2Light-DependentReactionsCalvinCycleH2O(REACTANTS)(PRODUCTS)
28Calvin Cycle How it works: 6 CO2 enter the cycle and are converted into glucose.With TWO turns of Calvin Cycle, you make ONE glucose.
29What are the two steps of Photosynthesis listed in the correct order? CPSA. Glycolysis & Krebs cycleB. Calvin cycle & L.D.R.C. L.D.R. & Kreb’s cycleD. L.D.R & Calvin cycle
30Which compound is a product of photosynthesis and a reactant for cellular respiration? CPSA. carbon dioxideB. waterC. glucoseD. energy
31Why are photosynthesis and cellular respiration often considered opposites? A. Photosynthesis produces twice as many ATP molecules as cellular respiration does.B. Water is released during photosynthesis and consumed during cellular respiration.C. Photosynthesis occurs during the day, and cellular respiration occurs at night.D. Oxygen is produced during photosynthesis and used during cellular respirationCPS
32BIG PICTURE Plants release oxygen Animals bring in oxygen Plants create glucoseAnimals eat glucoseAnimals breathe out waterPlants bring in water
33BIG PICTURE Oxygen Glucose Carbon Dioxide water Plants and animals work together to create the carbon cycle:OxygenGlucoseCarbon Dioxidewater