Chapter 10

Question 1

What does absorption spectrum mean?

Answer 1

plot of
wavelengths
absorbed by a
pigment

-Is like a chart that shows which colors of light are absorbed and which aren’t

Question 2

What does action Spectrum mean?

Answer 2

plot
of photosynthetic rate
against wavelength of light.
-Which colors of light help plants do their job best!!

Question 3

What does autotroph mean?

Answer 3

A plant or other living thing can make its own food.

Question 4

What a Bundle sheath cell?

Answer 4

-is like a special helper cell in plant leaves that helps with photosynthesis, the process plants use to make food.

-like bodyguards that help the plant make food efficiently and protect the important part of the leaf.

Question 5

What is photosynthesis?

Answer 5

Energy from sunlight is captured and used to convert CO2 to more complex carbon compounds.

Question 6

What is Stomata?

Answer 6

Pores on leaf surface where CO2 enters and O2 and H2O exit.

Question 7

What is light reactions?

Answer 7

Converts light energy to chemical energy as ATP and NADPH.

Question 8

What is light Independent reaction(AKA Carbon reaction/Calvin cycle)

Answer 8

Uses the ATP and NADPH plus CO2 to produce carbohydrates.

Question 9

what is electromagnetic radiation?

Answer 9

Propagated as waves and as particles.

Question 10

What is photons?

Answer 10

Packets of energy

Question 11

What is pigments?

Answer 11

molecules that absorb specific wavelengths in the visible range.

Question 12

What is Chlorophyll?

Answer 12

A pigment in photosynthesis that absorbs blue and red light and scatters green.

Question 13

What is Photosystem?

Answer 13

Multi-protein light-harvesting complex in the thylakoid.

Question 14

What Is light reactions?

Answer 14

They occur in the thylakoids and require water and light.

Question 15

What is light harvesting complexes?

Answer 15

Like a group of tiny solar panels that help the plant collect sunlight and turn it into energy for making food.

Question 16

What does Noncyclic electron transport mean?

Answer 16

-uses two photosystems to produce ATP and NADPH:
1. Photosystem I
2. Photosystem II

-The electron move in one direction, like a relay race, and their energy helps the plant make food in oxygen.

Question 17

What does Cyclic electron transport mean

Answer 17

-uses photosystem 1 and electron transport to produce ATP instead of NADAPH

Question 18

What is the Calvin cycle?

Answer 18

The CO2 fixation pathway
-CO2 binds to 5-C RuBP

Question 19

What is the Rubisco

Answer 19

The enzyme that catalyzes this reaction

Question 20

What is photorespiration

Answer 20

RuBP reacts with O2(instead of CO2)

Question 21

What is the Clavin Cycle of C3 Plant?

Answer 21

-Limitation: Photorespiration

-How plant avoids Photorespiration: N/A

-Habitat: Cool, moist
-% of plant species: 95%

Question 22

What is the Calvin Cycle of C4 plant?

Answer 22

-Limitation: ATP Cost

-How plant avoids photorespiration: Light reaction and carbon reaction occurs in separate cells.
- Habitat: Hot, dry
%of plant species: 1%

Question 23

What is Calvin cycle of Crassulacean acid metabolism (CAM) plant?

Answer 23

Limitation: Reduced carbon availability.

-How plant avoids photorespiration: CO2 is absorbed at night; light reactions and Carbon reaction occur during the day.
-Habitat: hot, dry
-%of plant species: 3-4%

Question 24

What is Carboxylase?

Answer 24

-A helper that helps plants and other living things put carbon dioxide (CO2) into other molecules to make new stuff.

-Is like a special helper that plants use to turn carbon dioxide into useful like sugar.

Question 25

What does Photosystem II do?

Answer 25

When an excited chlorophyll (Chl*) gives up its electron, it is unstable and grabs another electron from water.

Question 26

What does Photosystem I do?

Answer 26

An excited electron from Chl* reduces an acceptor.

Question 27

What does Photophosphorylation do?

Answer 27

ATP is formed and is a chemiosmotic mechanism.

Question 28

What does heterotroph mean?

Answer 28

a living thing that eats food to get energy, unlike plants, which can make their own food.