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Flashcards in Photosynthesis Deck (38)
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1

What molecules are most commonly broken down to make ATP?

Carbohydrates

2

Where is energy stored in our food?

chemical bonds

3

What molecule transfers energy from our food to our cells?

ATP

4

How does ATP deliver energy?

A phosphate is removed which releases energy when the bond is broken forming ADP.

5

What process do organisms use to make food in the absence of sunlight?

chemosynthesis

6

What is the chemical equation for photosynthesis?

6CO2 + 6 H20 + sunlight -> C6H1206 + 6O2 *** note the numbers should be subscript

7

What part of the electromagnetic spectrum contains visible light?

ROYGBIV

8

What structure allows plants to take in carbon dioxide and release oxygen

stomata

9

What are pigments?

molecules that absorb light

10

What are the 2 most common types of pigments found in plants?

Chlorophyll a and B

11

Why are plants green?

they absorb all wavelengths except green which is reflected

12

What is the function of accessory pigments?

allows plants to capture green light

13

What are carotenoids?

yellow-orange pigments

14

What are anthocyanins?

red-purple pigments

15

What molecules stores the most energy in your body?

fat

16

What molecule does your body break down last for energy?

Protein

17

What organelle contains chlorophyll?

chloroplasts

18

Why do leaves change color in the fall?

chlorophyll is ususally the first pigment to break down allowing the accessory pigments to become visible

19

Describe the structure of a chlorplast.

double membrane with stacks of thylakoids called grana surrounded by a fluid called stroma

20

Why are the light-dependant reactions called dependant?

they can not occur without light

21

Where do the light-dependent reactions take place?

on the thylakoid membrane

22

What 2 things are needed (reactants) during the light dependant reactions?

water and sunlight

23

What are photosystems?

clusters of pigments that absorb light energy

24

What happens to the electrons in the photosystem when it absorbs light?

they get excited

25

Where do the electron go once they have left the photosystems?

electron transport chain

26

Where does the photosystem get replacedment electrons?

splitting of water

27

Where does the oxygen you breath come from initally?

water

28

What is the role of NADP+ in the light dependant reactions?

carries the electrons from the light-dependent reactions to the calvin cycle? (energy delivery trucks)

29

What is the function of ATP synthase?

enzyme that makes ATP

30

Where does the ATP deliver the energy?

calvin cycle