Chapter 10- Photosynthesis

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PEP carboxylase

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24 Terms

1

PEP carboxylase

________ is common in mesophyll cells near the surface of leaves, while rubisco is found in bundle sheath cells that surround the vascular tissue in the interior of the leaf.

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2

electron energy

When the ________ produces light, it is called fluorescence.

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3

reaction sequence

The ________ resembles respiration, because it consumes oxygen and produces carbon dioxide.

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4

Excite

________ an electron in a nearby pigment and induce resonance.

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5

thylakoid membrane

In the chloroplast ________, 200- 300 chlorophyll molecules and accessory pigments are organized by associated proteins to form large complexes called photosystems.

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6

Engelmann

________ concluded that they defined the action spectrum for photosynthesis- the wavelengths that drive the light- capturing reactions.

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7

Plastoquinone

________ (PQ) is a quinone similar to ubiquinone in the ETC of cellular respiration.

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8

Photosynthetic organisms

________ that oxidize water will generate oxygen (02) as a by- product, and thus perform oxygenic " (oxygen- producing) "photosynthesis.

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9

Pheophytin

________ is identical to chlorophyll except that ________ lacks a magnesium atom in its head region.

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10

synthesis of ATP

Since the ________ in chloroplasts is initiated by the energy from light, it is called photophosphorylation.

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11

NADPH

Electrons from photosystem I are used to produce ________, which is a reducing agent similar in function to the NADH and FADH2 produced by the citric acid cycle.

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12

Calvin

The reactions that reduce carbon dioxide and produce sugar came to be known as the ________ cycle.

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13

surface of a leaf

The ________ is dotted with openings bordered by two distinctively shaped cells called guard cells.

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14

thylakoids

The fluid- filled space between ________ and the inner membrane is the stroma.

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15

Pigments

________ are molecules that absorb only certain wavelengths of light- other wavelengths are either reflected or transmitted.

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16

chain of redox reactions

The electrons that pass from water to NADP+ move through a(n) ________ in a linear fashion, referred to as noncyclic electron flow.

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17

small diffusible protein

When electrons reach the end of the cytochrome complex, they are passed to a(n) ________ called plastocyanin (PC)

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18

photosystem II

In ________, the action often begins when a mobile accessory UCture called the light- harvesting complex transmits resonance energy to an antenna pigment inside the photosystem.

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19

absorption spectrum

A(n) ________ measures how the wavelength of photons influences the amount of light absorbed by a pigment.

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20

visible spectrum

Chlorophylls, designated chlorophyll αand chlorophyll b, absorb strongly in the blue and red regions of the ________.

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21

Electromagnetic radiation

________ is characterized by its wavelength- the distance between two successive wave crests or troughs.

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22

antenna pigments

When ________ absorb photons, the energy- but not the electron itselι is passed to a nearby pigment molecule, where another electron is excited in response.

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23

Photosynthetic organisms

________ can not store the electromagnetic energy of light unless it is first converted into another form.

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24

Pigments

________ appear colored because people see only the wavelengths that are not absorbed.

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