Reactions Of Photosynthesis Worksheet With Answers (Page 4 of 4) in pdf

Reactions Of Photosynthesis Worksheet With Answers Page 4

USE WORDS FROM THE WORD BANK TO FILL IN THE CHART COMPARING AND CONTRASTING THE

LIGHT-DEPENDENT REACTIONS AND THE CALVIN CYCLE: (You can use them more than once!)

in stroma

part of thylakoid membrane

ATP

NADPH

Requires light

Doesn’t require light

SUGARS (glucose)

LIGHT-DEPENDENT REACTIONS

CALVIN CYCLE

LOCATION

Part of thylakoid membrane

stroma

REACTANTS

H2O,

CO2, NADPH, ATP

PRODUCTS

O2, NADPH, ATP

SUGARS (Glucose)

IS LIGHT REQUIRED?

Requires Light

Doesn’t Require Light

THINK ABOUT IT

EFFECT OF TEMPERATURE: The chemical reactions of photosynthesis require enzymes (proteins) to make

them happen. Enzymes work best in a certain temperature range. At temperatures on either side of this

optimum range, photosynthesis will slow or stop. Which of these graphs represents the effect of

temperature on the rate of photosynthesis? C

EXPLAIN YOUR ANSWER.

_The temperature above or below a certain range for certain trees/plants

damages the enzymes responsible for carrying out photosynthesis____________________

EFFECT OF LIGHT: The light dependent reactions of photosynthesis require light. As light intensity

increases, photosynthesis will also increase up to a point where the enzymes are working as fast as they

can, all the carriers are full and cycling as quickly as they can, and photosynthesis can’t go any faster.

Which of these graphs represents the effect of light intensity on the rate of photosynthesis? A

EXPLAIN YOUR ANSWER.

Light intensity can only increase the rate of photosynthesis up to a certain

point – its maximum – once this point is reached photosynthetic rate can no longer increase

Reactions Of Photosynthesis Worksheet With Answers Page 4