Biology Unit 4 Quiz

Question 1

Equation for Photosynthesis

Answer 1

6CO2 +6H2O+ Sunlight –> C6H12O6+6O2

Question 2

Where do plants mass come from?

Answer 2

95% CO2

Question 3

Who came up with the plant experiment?

Answer 3

Jan Baptist van Helmont

Question 4

What is energy?

Answer 4

The capacity of doing work

Question 5

Stomata

Answer 5

specialized cells that control the exchange of gases in leaves

Question 6

Difference between ATP and ADP

Answer 6

ATP has 3 phosphate groups and ADP has 2 phosphate groups

Question 7

Thylakoid

Answer 7

saclike membranes arranged in stacks

Question 8

Grana

Answer 8

(plural version of granum) stack of thylakoids

Question 9

Stroma

Answer 9

fluid portion of chloroplast

Question 10

where does photosynthesis take place?

Answer 10

Occurs in chloroplast

Question 11

What is Photosynthesis?

Answer 11

plant cells’ ability to make glucose with the help of sunlight

Question 12

What role do pigments play in photosynthesis?

Answer 12

Pigments capture sunlight and convert it into chemical energy

Question 13

what is light?

Answer 13

energy form the sun travels to earth in the form of energy

Question 14

What is ATP?

Answer 14

An energy carrying 3 phospage groups used in cellular process

Question 15

What is ADP?

Answer 15

Contains 2 phosphate groups (you can add 1 more phosphate group)

Question 16

What are pigments?

Answer 16

substances that absorb visible light

Question 17

How does ATP and ADP release energy?

Answer 17

When the last covalent bond between phosphate is broken

Question 18

How does ATP and ADP stores energy?

Answer 18

By reattaching a free phosphate molecule to ADP, turning back to ATP

Question 19

Equation of Cellular Respiration

Answer 19

C6H12O6+6O2 → 6CO2 +6H2O + ATP energy

Question 20

What are the factors that affect Photosynthesis?

Answer 20

Light Intensity:
- The amount
- Brightness
- Color (only certain wavelengths)
Water
- A shortage of water slow down the growth of plants
Temperature
- Can cause the reaction to slow down caused of different temps

Question 21

How do ADP and ATP molecules capture energy?

Answer 21

ADP captures energy when adding an extra phosphate group adds more energy into ADP. But when ATP’s phosphate group breaks away, its losing energy

Question 22

How do electrons flow during photosynthesis?

Answer 22

Electrons are transferred between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP

Question 23

What is photosytem II?

Answer 23

Photosystem II uses sunlight to split H2O molecules into H+, O2, and e-. Most of the O2 diffuses into the air. The electrons enter the electron transport chain

sunlight gets absorbed to collect electrons. all electrons gather and help NADPH and H+ to make NADPH

Question 24

What is Photosystem I?

Answer 24

Uses the sunlight energy, energy-depleted electrons are re-energized. The energized electrons are used to produce NADPH a molecule that will later be used to make glucose.

sunlight gets absorbed by pigments and coverts it into electrons and then H2O splits into H+ and O2 and electrons

Question 25

What is ATP Synthesis?

Answer 25

The high H+ iion concentration in the inner thylakoid space creates a concentration gradient. H+ ions diffuse back into the stroma through a membrane protein, ATP Synthesis. The energy released by the flow of H+ ions converts ADP to ATP.

Question 26

What is Electron Transport?

Answer 26

Energized electrons are shuttled from PSII across carrier molecules. The carrier molecules use the electrons energy to transport H+ ions from the stroma into the inner thylakoid space.