Study Guide Chapter 8

Question 1

What is photosynthesis ?

Answer 1

Process that manufactures Sugar (glucose)

Question 2

What is the chemical equation for photosynthesis ?

Answer 2

6CO2+6H2O—>C6H12O6+6O2

Question 3

Examine chemical equations for respiration and photosynthesis?

Answer 3

The equation for cellular respiration is the direct opposite of photosynthesis.
C6H12O6+6O2—>6CO2+6H2O

Question 4

How are plants and animals dependent on each other ?

Answer 4

The products of each of these reactions initiate the other reaction.

Question 5

Autotroph VS Heterotroph

Answer 5

Autotroph are knows as producers bc they are able to make their own food from raw materials and energy, heterotroph are consumers they consume producers or other consumers.

Question 6

Light dependent VS light independent

Answer 6

Light dependent create O2 from H2O, ATP, NADPH occurs in the thylakoid membrane of the chloroplast
Light independent create glucose using CO2 (the Calvin cycle) occurs in the stroma of the chloroplast

Question 7

Chlorophyll VS carotenoids

Answer 7

Chlorophyll absorb photons of light
Carotenoids different energy absorbing pigments absorbs wavelengths chlorophyll doesn’t

Question 8

What is the purpose of photosynthesis

Answer 8

To transform water sunlight into carbon dioxide into oxygen and simple sugar (glucose) that plant uses as fuel

Question 9

What two set reactions are included

Answer 9

Light dependent and light independent

Question 10

What is chloroplast and what are is component parts

Answer 10

Organelle which captures photons of light from the sun
Thylakoid, lumen, stroma,chlorophyll

Question 11

What is the general purpose and product of photosynthesis 1?

Answer 11

Makes ATP, uses light energy to produce the high energy carriers ATP and NADPH shuttle electrons and photons

Question 12

What is the general purpose and products of photosynthesis 2

Answer 12

Moves electrons and hydrogen + (protons) across thylakoid membrane
Creates gradient that will later be used to make ATP

Question 13

What is chlorophyll and what does it do ?

Answer 13

The name of the green pigment that plants use to make food during a process called photosynthesis
Absorbs photons of light

Question 14

Why is it necessary to have both photosystem 1 & 2

Answer 14

There is not enough energy to provided from a single photon to produce the energy carrying molecule needed like NADPH

Question 15

What are the three phases of the Calvin Cycle

Answer 15

Fixation, reduction, regeneration

Question 16

What happens in fixation

Answer 16

Ribulose Biphosphate reacts with CO2
PRODUCES 6 carbon compound sp
SPLITS in two -> 3-phosphoglycerate
RUBISCO (enzyme)
USES CO2

Question 17

What happens in reduction

Answer 17

ATP phosphorylates 3-phosphoglecerate
NADPH reduce it
Together these will PRODUCE glyceraldehyde 3-phosphate (G3P)

Question 18

What happens in Regeneration

Answer 18

Some G3P is used to regenerate RUBP

Question 19

What happens if O2 levels inside the plant cell climb in comparison to carbon dioxide levels ?

Answer 19

Photorespiration (reverse photosynthesis)
Oxygen out competes CO2 in Rubisco

Question 20

What structure and cells allow carbon dioxide into a plant cell

Answer 20

Stomata 2 guard cells create pore when CO2 level inside drops

Question 21

Study chart last page of ch 8