Using Models To Understand Photosynthesis Biology Worksheets (Page 2 of 3) in pdf

Using Models To Understand Photosynthesis Biology Worksheets Page 2

Photosynthesis t akes p lace i n c hloroplasts w hich a re

abundant i n l eaf c ells. T his d iagram o f a c hloroplast

provides a nother m odel o f p hotosynthesis.

This m odel s hows s ome o f t he m ultiple s teps i nvolved i n

synthesizing a s ingle s ugar m olecule a nd a f ew o f t he m any

molecules n eeded f or p hotosynthesis. A nother i mportant

molecule i s c hlorophyll, a g reen p igment w hich a bsorbs

light a nd b egins t he p rocess o f c onverting l ight e nergy t o

chemical e nergy.

In a r eal c hloroplast, t here a re m any r epeats o f e ach o f t he

molecules a nd s tructures s hown h ere.

3. C ircle t he p art i n t he c hloroplast w here y ou w ould e xpect

chlorophyll t o b e l ocated.

4. A t ypical l eaf i s f lat a nd t hin. W hy i s i t u seful f or e ach l eaf c ell t o b e r elatively n ear t he s urface o f t he

leaf?

5. A ll t hree m odels o f p hotosynthesis ( the d iagram a bove a nd t he c hemical e quations a nd c hart o n p age

1) s how s ome o f t he s ame b asic c haracteristics o f p hotosynthesis. W hat a re s ome b asic c haracteristics

of p hotosynthesis t hat a re s hown i n a ll t hree o f t hese m odels o f p hotosynthesis?

6. C ompare t he t hree t ypes o f m odels – t he d iagram, t he c hemical e quations a nd t he c hart. D escribe

one a dvantage o f e ach t ype o f m odel t hat h elps y ou t o b etter u nderstand p hotosynthesis.

Advantage o f t he D iagram

Advantage o f t he C hemical

Advantage o f t he C hart

(this p age)

Equations ( p. 1 )

(p. 1 )

The s ugar m olecules p roduced b y p hotosynthesis a re u seful f or t wo r easons. A s s hown o n t he n ext

page, t he c hemical e nergy s tored i n t he s ugar m olecules c an b e t ransferred t o A TP m olecules w hich

provide t he e nergy f or c ellular p rocesses. I n a ddition, p lant c ells u se s ome o f t he s ugar m olecules t o

synthesize o ther n eeded m olecules s uch a s c ellulose a nd a mino a cids.

Using Models To Understand Photosynthesis Biology Worksheets Page 2