BIOL 1201 Chapter : Ch 10 Photosynthesis

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azuremammoth471

15 Mar 2019

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Process that transfers light energy into chemical energy and stores that energy in some organic molecules (e. g. glucose) Reaction: 6 co2 + 6 h2o + light energy. Reverse the direction of electron flow compared to respiration. This is a redox process in which h2o is oxidized and co2 is reduced. An endergonic process (the energy boost is provided by light) Synthesis of energy-rich organic molecules (glucose) from energy- poor molecules (h2o and co2. Occurs in photosynthetic organisms plants algae bacteria. Directly or indirectly supplies energy to most living organisms. Autotroph produce organic molecules from co2 and other inorganic raw material obtained from the enviroment (autotrophs are the producers of the biosphere) Heterotrophs live on organic compounds produced by other organisms (heterotrophs are the consumers of the biosphere) Mesophyll: layers of cells containing chloroplast (chloroplast cont. ) Carry sugars out of leaf to other parts of plants (chloroplast cont. ) Thylakoid: interconnected membranous sacs containing pigments to absorb light energy [ptimary pigment: chlorophylls]

Related Questions

1. All of the following are correct descriptions of photosynthesis except:

A) The Calvin Cycle is endergonic.

B) Electrons are supplied to the reaction center via the splitting of water, which yields O2 as a byproduct

C) Chlorophyll and accessory pigments capture energy from the sun in the form of electrons, which they use to drive the electron transport chains of photosystems I and II.

D) ATP and NADPH generated in the light-dependent reactions are used to power CO2 fixation via the Calvin cycle in the light-independent reactions.

2. In glycolysis and the TCA cycle, glucose is _____ down to CO2; this process _____ lots of ATP and reducing power. In photosynthesis, CO2 is ______ back to sugar by the _______ of lots of ATP and reducing power.

A) reduced; requires; oxidized; production

B) oxidized; requires; reduced; production

C) oxidized; produces; reduced; input

D) reduced; produced; oxidized; input

3. Which description accurately compares cellular respiration and photosynthesis?

A) Photosynthesis uses energy captured from sunlight to power the reduction of carbon dioxide to sugars; cellular respiration oxidizes sugars to yield energy for the cell.

B) The ATP produced via cellular respiration is needed to power the reactions of photosynthesis

C) The pathways of photosynthesis are those of cellular respiration run in reverse.

D) Photosynthesis captures energy from sunlight to oxidize carbon dioxide to sugars; cellular respiration reduces these sugars to yield energy for the cell.

40. When a protein is synthesized within the cell, this process represents a chemical reaction that is:

		explosive
		exergonic and anabolic
		exergonic and catabolic
		endergonic and anabolic
		endergonic and catabolic

39. Chemical bonds in carbohydrates (i.e., glucose) and fats, have:

		no potential or kinetic energy
		large amount of kinetic energy
		large amount of potential energy
		small amount of potential energy
		small amount of kinetic energy

38. When Na+ moves into the cell following the openning of Na+ channels, _____________________________.

		the ion charge across the membrane in the area that Na+ moves in will change.
		voltage-gated channels will close.
		an action potential will be observed.
		the cell will hyperpolarize.
		same amount of K+ ions will move out of the cell to counteract the Na+ moving into the cell.

blacklion206

While Jill and Andre were studying for their Biology exam, Andre said, âAnimals perform cellular respiration and plants perform photosynthesis.â What about Andreâs statement should Jill have told him was incomplete?

Animals also perform photosynthesis.

Plants do not perform photosynthesis.

Animals do not perform cellular respiration.

Plants also perform cellular respiration.

There is nothing incomplete about Andreâs statement.

Question 3

Select one answer.

10 points

Select the incorrect statement regarding respiration and fermentation from the list below.

Respiration produces much more ATP than fermentation

Respiration produces acidic products, fermentation does not.

Both respiration and fermentation use organic molecules.

Respiration uses oxygen, fermentation does not.

Question 4

Select one answer.

10 points

Energy is harvested from which reaction to produce ATP?

Carbon dioxide and water â sugar and oxygen.

Sugar and oxygen â carbon dioxide and water.

Question 5

Select one answer.

10 points

What is the source of energy for photosynthesis?

Light

CO2

Water

Sugar

Question 6

Select one answer.

10 points

One way to explain how cellular respiration and photosynthesis relate to each other is to say that:

Plant cells use the oxygen produced by respiration for photosynthesis.

The oxygen produced by photosynthesis, once released to the environment, is the oxygen able to be used as the electron acceptors for cellular respiration.

Cellular respiration is a series of reduction reactions while photosynthesis is a series of oxidation reactions.

The two processes are not related.

The use of oxygen by plants contributes to the greenhouse effect.

Question 7

Select one answer.

10 points

The calculated net amount of ATP produced from one glucose molecule during aerobic respiration in eukaryotes is

100

Question 8

Select one answer.

10 points

All of the following statements is true of photosynthesis, EXCEPT:

Releases CO2

Releases oxygen

Glucose is produced.

Water is required

Question 9

Select one answer.

10 points

Which of the following is an anabolic pathway?

photosynthesis

cellular respiration

fermentation

all of these processes

Question 10

Select one answer.

10 points

Plant leaves contain many different pigments. What is the purpose of having multiple pigments?

Capture light for photosynthesis at different wavelengths.

To absorb light that may harm the photosynthetic machinery.

To give leaves different colors in the fall.

orchidpig270

BIOL 1201 Chapter : Ch 10 Photosynthesis

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