Photosynthesis Quiz
what does a thylakoid does during photosynthesis?
enables the light-dependent reactions to occur
Which process could cause ice to form a thin layer over a lake?
freezing
What does the grana do?
function in the light reactions of photosynthesis
What substance, produced during photosynthesis, provides food for plants and animals in a food web?
glucose
What are the products of photosynthesis?
glucose and oxygen
What type of bond between water molecules pulls them into this tight ball?
hydrogen bond
What type of bond holds more than one molecule together?
hydrogen bond
Which type of bond forms between water molecules?
hydrogen bonds
Photosynthesis
is the process by which green plants, algae, and some bacteria capture light energy to form simple sugars using water and carbon dioxide and release oxygen gas as a byproduct
Which part of the plant contains the most cells specialized for photosynthesis?
leaves
In which ways is photosynthesis important to life on Earth?
makes food for all organisms, adds oxygen to the atmosphere, is a source of medicines and fibers, is a source of building materials, provides animal habitat
What component of Earth's atmosphere exists entirely as a result of photosynthesis?
oxygen gas
each atom in a water molecule contains
protons and neutrons in the nucleus, electrons outside the nucleus
Chlorophyll a absorbs
red, some blue and purple
Light Independent Reactions
set of reactions in photosynthesis that do not require light; energy from ATP and NADPH is used to build high-energy compounds such as sugar; also called the Calvin cycle
light-dependent reactions
set of reactions in photosynthesis that use energy from light to produce ATP and NADPH
Sublimation
solid to gas
Granum
stack of thylakoids
What part of the chloroplast does Light-independent reactions take place
stroma
Photosynthesis is important to living organisms because it is
the foundation of most food chains.
evaperation
the prosses where a liquid changes into a gas
water molecule contains
two hydrogen atoms and one oxygen atom
Chloraphyll absorbs
visible rays and captures their energy
In the processes of photosynthesis, what supplies the hydrogen (H) used in the formation of glucose?
water
Which reactant in the photosynthesis equation is the source of hydrogen for sugar molecules?
water
Percipitation
water that falls from the atmosphere to the Earth as rain, sleet , or snow
surface run off
water that stays on top of the land and flows back to a water source.
ATP
(adenosine triphosphate) main energy source that cells use for most of their work
How are the reactants represented in the chemical equation for photosynthesis?
6CO2 + 6H2O
Photosynthesis equation
6CO2 + 6H2O ------> C6H12O6 + 6O2
Thylakoid
A flattened membrane sac inside the chloroplast, used to convert light energy into chemical energy.
polar molecule
A molecule that has electrically charged areas.
Grana
A stacked portion of the thylakoid membrane in the chloroplast.
Chlorophyll
Absorbs light energy. Pigment that gives a plant its green color. Found in the chloroplast
NADPH
An electron carrier involved in photosynthesis. Light drives electrons from chlorophyll to NADP+, forming NADPH, which provides the high-energy electrons for the reduction of carbon dioxide to sugar in the Calvin cycle.
What is the word equation for photosynthesis?
Carbon dioxide + water -> glucose + oxygen
what occurs during the process represented by the photosynthesis equation?
Carbon dioxide and water are combined in a series of reactions, Sunlight provides energy for the reactions, Sunlight provides energy for the reactions, The energy from sunlight is stored in the glucose
Which parts of photosynthesis occur in the stroma of the chloroplast?
Carbon dioxide is used to build sugars
Where does photosynthesis occur?
Chloroplast
What type of bond holds the hydrogen and oxygen atoms together in a water molecule?
Covalent bond
Which scientist showed that plants use red and blue light in photosynthesis?
Engelmann
Infiltration
Flow of water from the land surface into the subsurface.
Condensation
Gas to liquid
why is the process of photosynthesis is important to live on Earth?
Green plants use photosynthesis to remove oxygen gas from the atmosphere and replenish the earth's carbon dioxide.
Which scientist demonstrated that the green parts of plants absorb carbon dioxide and release oxygen only in sunlight?
Jan Ingenhousz
What gas is produced during photosynthesis and released into the atmosphere?
Oxygen
Evapotranspiration
The combined amount of evaporation and transpiration
groundwater discharge
The flow or pumping of water from an aquifer
Stroma
The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.
Snowmelt runoff to streams
The movement of water as surface runoff from snow and ice to surface water.
What is the relationship of photosynthesis and energy?
The process of photosynthesis is energy-storing because the process converts light energy into chemical energy, which is stored in the bonds of glucose.
Which parts of photosynthesis occur in the thylakoid membranes of the grana?
The suns energy is captured, oxygen is produced, energy is transferred to ATP
What part of the chloroplast does Light-dependent reactions take place
Thylakoids
What part of the chloroplast is the Sun's energy absorbed
Thylakoids
Which scientist thought he proved that plants obtain nutrients from water rather than soil?
Van Helmont
Which stores groundwater?
aquifer
Chlorophyll b absorbs
blue, some orange and red
What are the reactants of photosynthesis?
carbon dioxide and water
Name the plant cell organelle where photosynthesis occurs.
chloroplasts
Which bonds are found inside a water molecule, between hydrogen and oxygen?
covalent bonds