Photosynthesis
Where in the cell does photosynthesis occur?
Chloroplasts
Where in the cell does cellular respiration occur?
Mitochondria
How does energy change in photosynthesis?
From light energy to chemical energy
Which atom is most important in CO2 for the plant?
Carbon
How does matter move into a leaf?
Through the stomata
What is the purpose of photosynthesis?
To create glucose (food) for the plant
What is the purpose of cellular respiration?
To create usable energy for the plant
How does energy change in cellular respiration?
From chemical energy to motion/heat energy
What does a plant use to make proteins?
Glucose + nitrogen (from soil nitrates)
How does glucose get from a leaf cell to a root cell?
Through the phloem
What is the chemical equation (reactants/products) for photosynthesis?
CO2 + H2O -> Glucose + O2
What is the chemical equation (reactants/products) for cellular respiration?
Glucose + O2 -> CO2 + H2O
Where is chemical energy stored?
In the high energy/organic/C-C & C-H bonds of glucose
How is water involved in biosynthesis?
Water is released/produced as monomers join
How are photosynthesis and cellular respiration related?
The products of one are the reactants of the other
Why can’t photosynthesis occur in the dark?
Photosynthesis requires light energy
When does cellular respiration occur? Why?
All the time day and night (as long as there is glucose) because it does not require light energy
How does a plant use motion energy?
To move (phototropism/gravitropism) and grow (biosynthesis)
How does a plant gain mass?
Biosynthesis creates polymers that are added to the cell, polymers have atoms and atoms have mass
Which process does a plant need to do first, second, and third to repair a damaged leaf?
1. Photosynthesis
2. Cellular Respiration
3. Biosynthesis
What would happen if a plant doesn’t get enough CO2?
CO2 is a reactant for photosynthesis, without it the plant can't produce glucose or chemical energy. Without chem E, the plant can't do cellular respiration to make energy for the plant to move or grow. The plant will die
What would happen if a plant is in the dark for a long time?
Photosynthesis would not happen (no light E) so no glucose is produced. Plant will continue doing cellular respiration until it runs out of glucose. When CR stops, the plant can no longer produce energy to move and grow. It will die
Where does the energy come from to re-grow a leaf?
Biosynthesis uses heat/motion E to re-grow leaf, heat/motion E transformed from chemical E in cellular respiration, chemical E transformed from light E in photosynthesis
How does a plant get all 3 polymers for biosynthesis?
From glucose (G) produced in photosynthesis.
G rearranged -> glycerol + fatty acids -> lipids
G rearranged + N -> amino acids -> proteins
G + G -> carbohydrates
How does a seed grow into a sprout?
CR uses chem E from C-C/C-H bonds in seed to make this motion/heat E (no light E underground so no PS)
BS needs motion/heat E to build polymers which add to cells to divide and grow