Chemistry photosynthesis
The light Independent or Calvin Cycle is also referred to as the
Dark Cycle
What are the 3 things needed by plants for photosynthesis?
carbon dioxide; water; sunlight
Photosynthesis is a
chemical process
green pigment that absorbs radiant energy from the sun
chlorophyll
In what organelle does photosynthesis occur?
chloroplast
What organelle in a plant is chlorophyll found in?
chloroplast
What organelle in a plant is chlorophyll found in? a central vacuole b mitochondrion c cell wall d chloroplast
chloroplast
organelle found in plants where photosynthesis takes place
chloroplast
what are the organelles in which photosynthesis occurs
chloroplast
What does the word photo mean?
light
what the equation for photosynthesis?
6 CO2+ 12 H2O + Light energy ---> C6H12O6 + 602
What is created when animals and plants go through cellular respiration? a Sugar b ATP (energy)
ATP (energy)
What are 2 energy compounds that transferred to the Calvin cycle?
ATP and NADPH
In the light reactions, energy from the sun is used to make
ATP, NADPH
Since plants make their own food they are
Autotrophs
Why would a plant close its stomata?
Because it's hot and they don't want to lose water
What is the chemical equation for glucose
C6 H12 O6
What do CAM plants do to help reduce the loss of water and still capture carbon dioxide?
CAM plants close the stomata during the day and open them at night
Both of these evolutionary solutions are adaptations that change the way the plant stores what reactant for photosynthesis?
CO2 Carbon Dioxide
Which gas is removed from the atmosphere during photosynthesis?
Carbon Dioxide
gas that is a reactant of photosynthesis
Carbon dioxide
Which substances must a green plant obtain from its environment in order to convert light energy into chemical energy?
Carbon dioxide and water
A flask is placed outside in direct sunlight, during the day and at night to compare the amounts of carbon dioxide (CO2) and oxygen (O2). What will his analysis most likely show?
During the day, the amount of oxygen in the flask increases while the amount of carbon dioxide decreases.
Identify the chemical/process in E
H2O
The oxygen (O2) that is released form plants comes from?
H2O water
What does photosynthesis do for you?
It gives you oxygen to breathe It gives you food to eat
Autotrophs, such as plants, use light to make their own food. What happens to the light absorbed by a plant during photosynthesis?
It is converted to chemical energy which the plant stores as glucose
What is the chemical/process in B
Light Energy
Photosynthesis consists of two processes. What are they.
Light reactions, Calvin Cycle (dark reactions)
Light reactions can only happen way? What about the Calvin Cycle?
Light reactions: only during the day Calvin Cycle: any time of the day
In the light-dependent reactions, water is split and ______ is released
O2
Overall, what types of organisms benefit from the producers that capture energy from sun light and produce oxygen and sugar? a Organisms that are consumers. b Organisms that are producers. c Organisms that have chloroplast. d Photosynthetic organisms
Organisms that are consumers
What gas is produced in photosynthesis that directly benefits us? a Oxygen b Nitrogen c Hydrogen d Carbon dioxide
Oxygen
gas that is a product of photosynthesis
Oxygen
The 2 PRODUCTS of photosynthesis are-
Oxygen, Glucose
What happens in light reactions (everything produced)?
Split water, release oxygen, produce ATP, and form NADPH
What 3 things are the REACTANTS of photosynthesis?
Sun, Water, CO2
Pigments found in plants are necessary for
capturing energy from sunlight
Another name for the light independent reaction is called a The Kelvin cycle b The Calvin cycle c The Water cycle d The Carbon cycle
The Calvin Cycle/ The Dark Cycle
Transpiration is
The evaporation of water out of stomata plants
What would be a best explanation for the gas accumulated in one of the inverted test tubes?
The light caused the plants to photosynthesize, releasing O2 gas
If ATP is not present, the Calvin Cycle will shut down. True/False
True
Glucose is an example of which Carbon-based macromolecule? a proteins b carbohydrates c nucleic acids d lipids
b) carbohydrates
What are the products of Photosynthesis? a carbon dioxide & oxygen b oxygen & glucose c carbon dioxide, water and light d carbon dioxide & water
b. Oxygen and Glucose
In photosynthesis, what are the two major reactions that take place? a light dependent reaction b light independent reaction
both a and b
Where does the light dependent reaction of photosynthesis occur? What is produced? a stroma; glucose b mitochondria; oxygen c thylakoid; oxygen d cytoplasm; NADH
c
Where does the light independent reaction of photosynthesis occur? What is produced? a thylakoid; oxygen b stroma; NADH c stroma; glucose d granum; glucose
c
Pigments found in plants are necessary for a transferring NADPH into NADP b cell growth c converting ATP into ADP d capturing energy from sunlight
d capturing energy from sunlight
chemical reactions are not important to all living things true/false
false; they are important to all living things
All of the functions of the Calvin Cycle:
forms sugar from carbon dioxide, using ATP for energy, and NADPH for reducing power
Plant cells have mitochondria, which use glucose to produce ATP. Where does the glucose originate
from photosynthesis, which occurs in chloroplasts
Plant cells have mitochondria, which use glucose to produce ATP. Where does the glucose originate?
from photosynthesis, which occurs in chloroplasts.
C6 H12 O6 is also known as
glucose
CO2 is combined with the energy from NADPH and ATP to make
glucose (sugar)
Where do light reactions occur?
grana
Stack of "pancakes" in chloroplast
granum
obtain their organic material from other organisms consumers of the biosphere
heterotrophs
Chloroplasts split water into
hydrogen and oxygen, incorporating the electrons of hydrogen into sugar molecules
where does the Calvin Cycle occur
in the stroma
the inner shell of chloroplast
inner membrane
the bridge that connects each stack pancakes
lamella
What happens in the thylakoid?
light reactions, light dependent reactions
Does chlorophyll absorb green light?
no
Does chlorophyll absorb green light? a Yes b No
no
the outer shell of a chloroplast
outer membrane
The little bubbles in the test tube are
oxygen
they use the energy of sunlight to make organic molecules from water and carbon dioxide
photoautotrophs
what are plants
photoautotrophs
------------------ converts light energy to the chemical energy of food
photosynthesis
occurs in plants, algae, certain other protists, and some prokaryotes
photosynthesis
process by which plants take in carbon dioxide to make glucose, releasing oxygen
photosynthesis
the process that converts solar energy into chemical energy
photosynthesis
Which of the following can do photosynthesis? Check all that apply. a plants b Some protists c People d Some bacteria
plants, protists, some bacteria
------ and other ------- are the producers of the biosphere
plants; autotrophs
Photosynthesis is a ----- process. Water is ----- carbon is -----
redox; oxidized; reduced
What happens to green light when it hits a plant leaf?
reflected
What is the main purpose of photosynthesis?
store energy as photosynthesis
The Calvin Cycle Takes place in the
stroma
What is the liquid in the chloroplast called?
stroma
the liquid inside of the chloroplast
stroma
The light independent reaction makes... a Sugar b Water c Light energy d Carbon dioxide
sugar
What are the major sites of photosynthesis
the leaves of plants
What is a stomata
the little mouths on the leaf of a plant where they take in CO2 and release O2
one singular "pancake"
thylakoid
what does chloroplast contain
thylakoids and granum
What does synthesis mean?
to make
In the absence of light during the Calvin cycle plants produce. sugar (glucose). true/false
true
Where does the oxygen that we breath come from? a Carbon dioxide b Sugar c Water d Light
water
