CHAPTER 10 - Photosynthesis Flashcards

1
Q

Define the process of photosynthesis

A

Process of converting solar energy into chemical energy

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2
Q

What is the difference between Autotroph and Heterotrophs?

A
  • Autotrophs produce organic molecules, using organic molecules
  • Heterotrophs obtain organic materials from other organisms. They depend of photoautotrophs for food.
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3
Q

Where does energy enter plants and gets stored as chemical energy?

A

Chloroplasts

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4
Q

Where is excess sugar stored in plants?

A

Starch

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5
Q

Where does the green color of plants come from?

A

Chlorophyll.

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6
Q

Where is the major location for photosynthesis in plants?

A

Leaves.

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7
Q

Where are the chloroplasts found in the cells?

A

Mesophylls, interior tissue of the leaf

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8
Q

What are the names of the pores that CO2 enters and O2 exits the leaf?

A

Stomata

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9
Q

TRUE OR FALSE: Thylakoids are stacked in columns of grana.

A

TRUE.

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10
Q

what is the dense fluid found in the chloroplast?

A

Stroma

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11
Q

Whats the equation for photosynthesis?

A

6 CO2 + 12 H2O + Light energy → C6H12O6 + 6 O2 + 6 H2O

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12
Q

What are the reactants and products of photosynthesis?

A

REACTANTS - 6 CO2 and 12 H2O

PRODUCTS - C6H12O6, 6H2O, 6O2

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13
Q

What are the 2 stages of photosynthesis?

A

Light reaction and Calvin Cycle.

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14
Q

Describe what happens in the the light reaction cycle.

A

H2O is split and releases O2, the reduction of NADP+ into NADPH/ ATP is generated from ADP by photophosphorylation.

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15
Q

Describe what happens in the Calvin Cycle.

A

Sugar is produced from CO2 using ATP and NADPH.

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16
Q

What is the difference between Chlorophyll a and b?

A

Chlorophyll a is the main pigment in photosynthesis

Chlorophyll b broadens the spectrum of light energy used for photosynthesis

17
Q

What is the name of the accessory pigment that absorbs excessive light that would damage the chlorophyll?

A

Carotenoids.

18
Q

What are the 3 phases of the Calvin Cycle?

A

1- carbon fixation
2- reduction
3- the regeneration of the CO2 acceptor (RuBP)

19
Q

What does the Calvin Cycle do/produce? How is it formed?

A

Produces SUGARS from smaller molecules by using ATP and CO2, carried by NADPH.