Photosynthesis (Lecture 13)

Question 1

Plants are

Answer 1

photoautotrophs

Question 2

Chlorophyll

Answer 2

the green pigment responsible for capturing light found within chloroplasts

Question 3

What kind of light does chlorophyll absorb?

Answer 3

light in the blue-violet region and orange-red region

Question 4

Chloroplast location

Answer 4

mesophyll cells

Question 5

Where are thylakoids found?

Answer 5

in the stroma (inner liquid of chloroplasts)

Question 6

Two types of reactions?

Answer 6

light dependent and light independent

Question 7

Light dependent

Answer 7

energy from the sun is used to split water to produce 2 important energy storage molecules (ATP and NADPH)

Question 8

What is the byproduct of a light dependent reaction?

Answer 8

Oxygen

Question 9

Light independent

Answer 9

energy derived from the LDRs is used to produce glucose in the Calvin cycle

Question 10

Where do light dependent reactions take place?

Answer 10

thylakoid membrane

Question 11

Photosystem 2 (LD)

Answer 11

Light strikes it, energy is absorbed through chlorophyll.

An electron in chlorophyll gets excited, and then water splits and produces protons, electrons, and oxygen.

Electrons move along the transport chain and lose energy along the way.

Protons accumulate in the thylakoid lumen.

Protons pass through a specialized enzyme (ATP synthase, AKA proton pump).

ATP is then synthesized from ADP and inorganic phosphorus.

Question 12

Photosystem 1 (LD)

Answer 12

Light strikes

P700 chlorophyll uses light to excite the electron to its primary acceptor

This electron, along with a proton, catalyzes the formation of NADPH from NADP

Question 13

The final products of light dependent reactions?

Answer 13

Oxygen, ATP, NADPH