PhotosynthesisIBDP Biology: HL/Option C

Stephen TaylorBandung International School

Image source unknown. Question from the IBO.

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Useful light dependent reaction animations:

Simple Calvin Cycle animations:

plateau

At low CO2 concentration, rate is positively correlated with concentration

CO2 is a substrate in an enyme-catalysed light-dependent reaction.

At low light intensity, rate of photosynthesis is proportional to light intensity.

plateau

Increased temp. gives increased energy and increased rate of photosynthesis

Optimum temperature

Above the optimum temp., enzymes are denatured and rate drops steeply.

Which enzymes are used in respiration?

Light intensity

Rate

of p

hoto

synt

hesi

s

What are the conditions of each of these trials?

For more help and useful animations, visit:

http://sciencevideos.wordpress.com