B4 Bioenergetics Flashcards
what is the enzyme involved in photosynthesis
light
three limiting factors for photosynthesis
co2
temperature
light intensity
balanced equation for photosynthesis
6CO2 + 6H20 → C6H12O6 + 6O2
what is the inverse square law equation involving distance and light intensity
light intenisty = 1/d@2
what does a greenhouse gas to to improve the rate of photosynthesis
it traps the light, therefore providing optimum light intensity for photosynthesis to take place
how do greenhouse gases affect the rate of photosynthesis
they improve photosynthesis becuase they give optimum light intensity
5 uses of glucose by plants
protein formation respiration fatty acids formation of starch cellulose
what reacts with nitrate ions to form what
glucose to make amino acids
when is anaerobic respiration used
during intense excersise when your body cannot provide enough oxygen to your muscles
three things organisms need to do respirtation for
to make larger molecules
muscles
for body temperature
equation for anaerobic respiration in:
- animals
- plants and yeast
glucose ——> lactic acid
glucose——-> co2 + ethanol
balanced eqution for aerobic respiration
C6H12O6 + 6O2 —–> 6CO2 + 6H20
what is the word for anaerobic respiration in plant and yeast cells and what product do they help make
fermentation
alcohol
why is anaerobic respiration used in our muscles during excersise
Energy demand increases, aerobic respiration alone can’t meet that demand. So, our muscles respire anaerobically to produce small amounts of energy
how is oxygen debt caused and how does it get repayed
-caused when you work so hard that you respire anaerobicly
-repayed by oxygen reacting
with the lactic acid to make co2 and water. breathing heavy takes place
for a while after the exercise also.
in what organ is xygen debt repayed by using what equation
the liver
oxygen + lactic acid ——-> co2 + water
what is metabolism
the sum of all chemical equations in the body
state 5 metabolistic processes
respiration
glucose reacting with nitrate ions to make amino acids
break down of exces proteins to form urea for exertion
conversion of glucose to starch
formation of lipids
how do you record the rate of photosynthesis
canadian seaweed in a test tube full of water, with a capillary tube
above it to catch its oxygen. shine a bright light at a specified distance
each time and then record how much it produces each minute with
regards to how far away the light is
difference between
anabolic reactions
catabolic reactions
anabolic- building reaction
catabolic- breaking down reactions
Describe how you test for glucose using an external solution
Add bendicts solution to a substance and heat it. If it turns out red it is a positive glucose result
