Study guide unit 2
Photosynthesis
1.What is photosynthesis? The process by plants using energy from the sun to create chemical
energy.
2. Which organisms preform photosynthesis and how are they classified (named)? Plants are
considered autotrophs.
3.What are the reactants and products for photosynthesis and the chemical equation?
Reactants—carbon dioxide and water. Products—glucose and oxygen.
6 H2O+6 C02>>>>C6 H12 O6 +6 O2
4. What are the reactants and products of photosynthesis for both light dependent and
independent reactions? (Light Dependent) reactants>water, product > oxygen and ATP
(Light independent) reactants> carbon dioxide and ATP, products>>glucose
5. Where does photosynthesis occur in a plant cell for both light dependent and independent
reactions?
In the chloroplast. Light dependent> Stroma Light independent > thylakoid.
6. How is the chloroplast able to absorb light including the role of chlorophyll and thylakoids?
Chlorophyll> light absorbing pigment, reflects green, thylakoids> enzymes convert CO2 and O2
7. Why are chloroplast green? Reflects green, absorbs all other colors
8. Why does photosynthesis occur in a plants leaf cell? Larger surface area.
9. How does a plants xylem and phloem and the guard cells and the stoma aid in
photosynthesis?
Xylem transports water up, phloem transports nutrients down, guard cells open the stomata, lets in
CO2, stoma passage into the leaf.
10. How does the environment affect the rate of photosynthesis? Need the right temperature,
amount of CO2, light intensity and water concentrations.
11. How would a change from one season to another affect photosynthesis? Fall> Temp is
lower, winter>temp and light is lower, spring> higher temperature, summer> higher light and
temperature.
CELLULAR RESPIRATON
1. What is cellular respiration? Turns food energy into usable energy for the cell
2. Which organisms preform cellular respiration and how are they classified? Plants
(autotrophs) and animals(heterotrophs).
3. What are the reactants and products and the chemical equation for both aerobic and the
two types of anaerobic respiration? Reactants>(aerobic) C6 H12O6 and O2 >>> Products ATP,
H2O, CO2. Reactants (anaerobic) glucose>>>products ATP, H2O, CO2.
C6 H12 O6 + 6 O2>>>> 6 CO2 +6 H2O
4. Where does cellular respiration occur in a plant/animal cell for both aerobic and
anaerobic respiration ? Aerobic>> mitochondria, Anaerobic>>cytoplasm
5. What are the two types of anaerobic (fermentation) respiration? Lactic acid fermentation
and alcoholic fermentation
6. Which organisms preform fermentation? (Lactic acid) muscle and bacteria, (alcoholic) yeast
and bacteria
7. What are the three stages of cellular respiration and which stages are anaerobic and
aerobic? 1. Glycolysis (anaerobic) 2. Krebs Cycle (aerobic) 3. ETC (aerobic)
8. Why is the electron Transport Chain (ECT) the output champion of cellular respiration?
Makes the most ATP ..34
9. How does a person’s diet affect the rate of cellular respiration? Cells are fueled by food
ingested to produce ATP for energy.
10. How would a person’s body after prolonged exercise affect cellular respiration? Our
muscles run out of oxygen which do lactic acid fermentation, sore muscles