Photosynthesis/Cellular Respiration Quiz

Question 1

ATP Structure

Answer 1

Nitrogen base (adenine). Sugar base (ribose). 3 phosphate groups held together with high energy bonds.

Question 2

Why are plants green?

Answer 2

The pigment chlorophyll which is present in all plants absorbs every color of light in sunlight other than green. Therefore, green light is reflected and is what we see.

Question 3

What is chlorophyll’s purpose?

Answer 3

To absorb light energy from the sun

Question 4

What three factors effect the rate of photosynthesis and why?

Answer 4

Light Intensity: Excites more electrons causing light reactions to happen faster. Amount of CO2: More ingredients to work with and process through cycle. Temperature: Increased temperature accelerates chemical reactions to a degree.

Question 5

What does ATP do?

Answer 5

ATP carries/stores energy for cell functions

Question 6

What two processes is photosynthesis made of?

Answer 6

Light-Dependent Reactions (Electron Transport Chain) followed by Light-Independent Reactions (Calvin Cycle)

Question 7

Photosynthesis: Electron Transport Chain Specific Process

Answer 7

Energy from sun is passed down the Electron Transport Chain and is stored in the bonds of ATP and NADPH. Light energy excites the electron. The electron moves down ETC.
At end they combine with of NADP+ and ADP, making NADPH and ATP. ATP, NADPH, and H+ leave the grana and go into the stroma for the next stage!

Question 8

Photosynthesis: Electron Transport Chain - What goes in and what comes out?

Answer 8

Light and water go in. ATP, NADH, and Oxygen come out.

Question 9

Photosynthesis: Calvin Cycle Process

Answer 9

CO2 diffuses into stroma and 6-C molecules are produced. Energy from ATP and NADPH and an enzyme break the 6-C molecule into 2 3-C molecules (PGA) Each 3-C molecule (PGA) is converted to a different 3-C molecule (G3P). One G3P leaves the cycle to become glucose. The other G3P repeats the cycle.

Question 10

Photosynthesis: Calvin Cycle. What goes in and what comes out?

Answer 10

ATP and NADH (from ETC) and Carbon Dioxide go in. Sugar (glucose) comes out.

Question 11

Where does the Electron Transport Chain in photosynthesis take place?

Answer 11

Occurs in the grana (specifically the thylakoid membrane) where the chlorophyll is stored

Question 12

Where does the Calvin Cycle take place?

Answer 12

The Stroma

Question 13

Photosynthesis Reactants and Products

Answer 13

Reactants: Carbon Dioxide and Water
Products: Glucose and Oxygen

Question 14

ATP-ADP Cycle

Answer 14

Energy is released for cell processes when one of ATP’s phosphate groups is removed. ADP is changed back into ATP when a phosphate group is added through broken down good, meaning ADP is recycled.

Question 15

What processes is Cellular Respiration made out of?

Answer 15

Glycolysis then Krebs Cycle then Electron Transport Chain

Question 16

Glycolysis. Purpose. Location.

Answer 16

10-step process of splitting the 6-C molecule of glucose in half to form two 3-C molecules called pyruvate. This occurs in the cytoplasm and requires no oxygen, meaning it’s anaerobic.

Question 17

Krebs Cycle. Purpose. Location. What it Produces.

Answer 17

Make electron carriers NADH and FADH2 to move on to ETC. Located in the Mitochondrial Matrix. Produces a little ATP and releases carbon dioxide as a waste products.

Question 18

Cellular Respiration: Electron Transport Chain. What is it? What does it make? Where does it occur?

Answer 18

A series of reactions using the electrons and hydrogens carried by NADH and FADH2 in the Krebs cycle. Enzyme ATP Synthase helps to assemble ATP. Makes a ton of ATP as well as water! Located in the inner membrane of the mitochondria (cristae).

Question 19

Cellular Respiration Reactants and Products.

Answer 19

Reactants: Glucose and oxygen.
Products: Carbon Dioxide, Water, and ATP

Question 20

Aerobic

Answer 20

Oxygen is present for the process

Question 21

Anaerobic

Answer 21

Oxygen is not present for the process

Question 22

What colors of light are best for photosynthesis?

Answer 22

Blue and Red

Question 23

Grana

Answer 23

Pancake-like stacks of thylakoid membrane

Question 24

Stroma

Answer 24

Fluid-like substance that fills the space between the grana

Question 25

Stoma

Answer 25

Small holes or pores in the bottom of a leaf that affect how much air can get into the leaf

Question 26

Thylakoid Membrane

Answer 26

A network of folded membranes found in chloroplasts (they compose granas)

Question 27

Mitochondrial Matrix

Answer 27

Fluid-like membrane that fills the space

Question 28

Cristae

Answer 28

Folds in the inner membrane of mitochondria