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$16.07 AP Bio “If I were an enzyme, I would be DNA helicase so I could unzip your genes” “If I were an enzyme, I would be DNA helicase… it’s an AP Bio.

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Presentation on theme: "$16.07 AP Bio “If I were an enzyme, I would be DNA helicase so I could unzip your genes” “If I were an enzyme, I would be DNA helicase… it’s an AP Bio."— Presentation transcript:

1 $16.07 AP Bio “If I were an enzyme, I would be DNA helicase so I could unzip your genes” “If I were an enzyme, I would be DNA helicase… it’s an AP Bio thing… you wouldn’t understand!”

2 How do plants respond to seasons?
AP Bio How do plants respond to seasons?

3 
PHOTOPERIODOCITY 

4 
PHOTOPERIODOCITY 

5 Some plants have Cytochrome protein
Protein that detects seasonal changes in night length This signals for flowers!

6 Cytochrome protein Pigment molecule (absorbs light)
enzyme that transfers phosphate groups

7 this protein undergoes a shape change when red light is present or far-red light is present

8 Short day plants = (LONG NIGHT PLANTS)
some flowers bloom in response to the short days/longer nights of fall, or winter

9 Short day plants = (LONG NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) The length of NIGHT was interrupted in the scenario on the right

10 Long day plants = (SHORT NIGHT PLANTS)
This means some flowers bloom in response to the: long days/shorter nights of spring or summer.

11 Long day plants = (SHORT NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) The length of NIGHT was interrupted in the scenario on the right

12 short day plants = (LONG NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)

13 long day plants = SHORT NIGHT PLANTS
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)

14 put it all together (hint: look at the amount of DARKNESS)
(hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)


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