#1
What is the equation for
Photosynthesis?
#1 answer
6CO2 + 6H2O
C6H12O6 + 6O2
#2
What organisms can do photosynthesis?
#2 answer
• Autotrophs – algae and plants
#3
• Using the following show how energy is
transferred: plant, animal, muscle, sun
#3 answer
• Sun -> plant -> animal -> muscle
#4
• What organelle does Photosynthesis take
place in?
• Draw a picture of it
#4 answer
• Chloroplast
#5
• Where does the carbon dioxide come from
for photosynthesis?
• How does the carbon dioxide enter the
plant (through what structure)?
#5 answer
• Atmosphere
• Stomata
#6
• What pigment is in the chloroplast?
• What happens when sunlight hits this
pigment?
#6 answer
• Chlorophyll
• When light hits the chlorophyll green light
is reflected and other wavelengths of light
are absorbed causing electrons in the
chlorophyll to get excited which gets the
process of photosynthesis going.
#7
• If a snail, elodea, water and bromothymol
blue are put into a test tube and left in the
light – what will happen and WHY?
• What will happen if this same test tube is
put in the dark and WHY?
#7 answer
• The snail will make carbon dioxide and the
elodea will use the carbon dioxide so the
BTB should not change color.
• The snail will make carbon dioxide BUT
the elodea will be unable to
photosynthesize so the BTB will turn
yellow.
#8
• What will happen to a plant if you shine
only red light on it for a long period of time
– what color will it appear to be and will it
survive.
• What will happen if you shine green light
on it for a long period of time – what color
will it appear to be and will it survive?
#8 answer
• Black, it will survive because it is
absorbing light
• Green, it will die because it is not
absorbing any light
#9
•
1.
2.
3.
4.
Do the following happen during the light
or the dark reactions of photosynthesis?
Water is split into hydrogen, oxygen, and
electrons
Carbon dioxide enters the plant
Electrons are excited
The Calvin cycle
#9 answer
1.
2.
3.
4.
Light
Dark
Light
dark
#10
• Does photosynthesis store or release
energy?
• Does cellular respiration store or release
energy?
#10 answer
• Store
• release
#11
• What is the equation for cellular
respiration?
#11 answer
• C6H12O6 + 6O2
6CO2 + 6H2O + ATP
#12
• What organelle does cellular respiration
take place in?
• Draw a picture of this organelle
#12 answer
• Mitochondria
#13
• What cells are mitochondria found in?
• What types of organisms do cellular
respiration?
#13 answer
• All eukaryotes
• Heterotrophs and autotrophs – all
organisms
#14
• Where did the energy come from that
holds the atoms together in a sugar
molecule?
#14 answer
• The Sun
#15
1. What is the difference between aerobic
and anaerobic respiration?
2. Give two examples of anaerobic
respiration.
3. Why is there less energy produced in
anaerobic respiration?
#15 answer
1. Aerobic is with oxygen, is more efficient
yielding more energy. Anaerobic is without
oxygen, is less efficient and yields less energy.
2. Alcoholic Fermentation, Lactic acid
fermentation, and some bacteria use nitrates
or sulfates instead of oxygen.
3. There is less energy in anaerobic respiration
because the glucose molecule is not
completely broken down.
#16
• Trace the flow off energy in the following:
house plant, fly eating the house plant,
sun, coal (burned to make electricity), light
bulb, pre-historic plants.
#16 answer
• Sun -> prehistoric plant -> coal -> light
bulb -> indoor plant -> fly
#17
• Explain how the food you eat is turned into
energy. In your explanation be sure to
include the organelle involved.
#17 answer
• Food goes through the digestive system where it
is broken down into glucose.
• The glucose enters the blood stream in your
small intestine.
• Glucose and oxygen (from lungs) travels
through your blood to all the cells in your body.
• Glucose and oxygen enter your cells by
diffusion.
• Glucose and oxygen go to the mitochondria of
your cells where the bonds holding the carbon,
oxygen and hydrogen together are broken
creating energy (ATP), carbon dioxide and
water.
#18
• Why do muscles begin to cramp after
prolonged intense exercise?
#18 answer
• The muscle cells do not receive enough
oxygen and therefore cannot completely
break down the glucose into carbon
dioxide and water. Instead glucose is
broken into lactic acid which builds up in
the muscles making them sore.
#19
• How are solar panels
and photosynthesis
similar?
#19 answer
• In solar panels sunlight is absorbed by first
exciting electrons in the crystals of the
panel. Instead of storing that energy as a
sugar the energy is used as or stored as
electricity.
#20
• Compare and contrast cellular respiration
and photosynthesis. List at least three
things that are similar and three things that
are different.
#20 answer
Similarities
Differences
Both use an organelle
that has increased
surface area
Photosynthesis occurs
in the chloroplast,
Cellular respiration in
the mitochondria
Both have a cycle
(Calvin cycle and Krebs
cycle)
Photosynthesis stores
energy, cellular
respiration releases
energy
Photosynthesis’
products are cellular
respiration’s reactants.
Both are biochemical
pathways.