Chapter 7 Reading Guide

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

_____________reacts with ozone to turn it into____

Chrlorine; O2

A plant uses the products of the Calvin cycle for which of the following?

To make starch, to make cellulose, and to make molecules used in protein synthesis

A common misconception is that the greenhouse effect is bad. Explain why this is not true

W/o it the earth would be significantly cooler and not as hospitable to life as it is

A plant's leaves are the primary site of photosynthesis. A plant's leaves would be expected to have a large amount of _________

chloroplasts (A student could also make an argument for chlorophyll)

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

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 heterotroph. Of course, it would be an autotroph

True or false: Each turn of the Calvin cycle produces one molecule of glucose

False, each turn of the Calvin cycle produces G3P

True or False: During photosynthesis, CO2 is split to release oxygen gas. If false, make it a true statement.

False: O2 is created as a result of splitting H2O

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

List three benefits of photosynthetic

Food, fuel, remove CO2

What is the overall effect of increased CO2 levels on poison ivy growth?

It increases poison ivy growth

____________ is the process by which a plant adds O2 to RuBP instead of CO2

Photorespiration

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 likely photoautotrophs and perform photosynthesis

Briefly explain the linkage what links the two stages of photosynthesis with each other

The two stages of photosynthesis are linked by the ATP and NADPH produced in the light reactions. ATP and NADPH are used in the dark reactions to power the synthesis of sugar

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 chemical reactions of the Calvin Cycle do not directly depend on solar energy, the reactions do depend on the products produced by the light energy

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

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

the 2 complexes of pigments that constitute a photo-system include _______ and ________

light-harvesters reaction center

what molecules do the two people at the top of the platform represent?

primary electron acceptors

what links the photo-system 1 with photo-system 2

the electrons passed between the two photosynthesis