Chapter 7 test
why is the Calvin cycle cyclic?
RuBP is generated in the final chemical reaction.
A new bacterium is discovered in lake Superior. Scietists are able to determine that these bacteria produce oxygen gas. What is likely to be true about these organisms?
The bacteria are Phototrophs that perform photosynthesis
what is the oxygen used for?
breathing
A toxin is found to inhibit the uptake of CO2 into plant leaves. This toxin would most directly affect the ________ a. light reactions b. splitting of H20 c. Calvin Cycle d. absorption of solar energy
c. Calvin cycle
what is the primary pigment found in the Chloroplast?
chlorophyll
what is produced in photosynthesis?
glucose and oxygen
where does photosynthesis occur?
in the chloroplast
A botanist discovers a new plant species in the Amazon rain forest that has blue leaves. briefly explain what can be inferred about the pigments of the leaves of this plant.
it can be assumed that the plant absorbs all colors except blue
what is photosynthesis?
it is the production of glucose and oxygen from the reaction of light, CO2, H20
the 2 complexes of pigments that constitute a photo-system include _______ and ________
light-harvesters reaction center
what links the photo-system 1 with photo-system 2
the electron transport chain
what are the 3 things to make glucose in photosynthesis?
water light carbon dioxide
true or false: Red Wavelengths of light have more energy than purple wavelength of light. If false make it a correct statement.
False: Red wavelengths have less energy than purple
what type of energy does the plant use to convert CO2 and H2O into sugar?
Light
where does the enter enter the plant?
stomata
true or false: a phototrauph is a type of heterotroph that uses solar energy to produce sugars. If false, make it a correct statement
False: A phototroph is not a type of heterotroph
True or False: During photosynthesis, CO2 is split to release oxygen gas. If false, make it a true statement.
False: O2 is produced from the splitting of H20
A student has been shrunk to fit inside the thylakoid space of the granum. How many layers of phospholipids would he/she need to cross through to get completely out of thee mesophyll cell?
8 layers
A plant's leaves are the primary site of photosynthesis. A plant's leaves would be expected to have a large amount of _________
chloroplast
what are chloroplast and where are they found?
chloroplast are found in the cell and is the site of photosynthesis
what is the glucose used for?
food and cellular respiration
what is the formula for photosynthesis?
6CO2 + 6H2O + Light ------> c6h12o6 + 6o2
which of the following substances provides the majority of the atoms that make up the sugar produced by photosynthesis? a. Water b. carbon dioxide c. oxygen d. hydrogen
B. Carbon Dioxide
if a scientist removes a pair of chlorophyll a molecules from the reaction-center complex, then which of the following consequences would be most likely to occur? a. the primary electron acceptor would capture boosted electrons from the light-harvesting complex b. The transfer of energy from the light-harvesting complex to the reaction-center complex would stop. c. Light would be absorbed twice as fast to make up for the loss of chlorophyll a pigments. d. None of the above consequences would occur
a. the primary electron acceptor would capture boosted electrons from the light-harvesting complex
the Calvin cycle is referred to as the light-independent reactions. Briefly explain why referring to the chemical reactions of the Calvin Cycle as the light-independent reactions is only partially accurate.
although the Calvin Cycle doesn't depend on solar energy it does depend on products produced with light energy
why do most leaves appear green?
because of the pigment chlorophyll
name 3 sources of CO2
breathing decomposition deforestation
what molecules do the two people at the top of the platform represent?
primary electron acceptors
where does the water come from?
the veins and from the roots soaked up by the ground and rain