Name:____________________________
Grade/Hour:______________________
Packet: Photosynthesis & Cellular Respiration Outline & SRQ’s
A. Taking in _________________—how plants eat and breathe.
1. ____________ of materials.
a. Most water enters through _________ and then moves up through the plant.
b. Water vapor exits through __________.
c. H2O, CO2 and __________ enter and exit the leaves.
2. Leaf structure and function— a ____________ has many layers.
a. Epidermis—outer layer containing many ___________ to control water loss.
b. __________ layer—absorbs and stores carbon dioxide and water needed for food production.
c. Food is produced in the ____________ layer.
3. ________________ and pigments
a. Chloroplasts—cell structures in which __________________ occurs
b. _______________ is green pigment in chloroplasts.
c. ____________ help plants absorb light energy to make food.
B. Food-making process
1. __________________—plant uses carbon dioxide, water, and light energy in the presence of
chlorophyll to make glucose and oxygen.
2. Light-dependent reactions—light energy splits water into oxygen and ____________; oxygen is
released as a waste product through stomata.
3. Light-___________ reactions.
a. __________________ and hydrogen from light-dependent reactions combine
to make sugars.
b. ___________ is used in a plant’s structure and growth.
c. Extra glucose is stored as other __________ or ____________
4. Importance of photosynthesis
a. Directly or indirectly produces ________ for almost all organisms.
b. Removes carbon dioxide from and adds oxygen to ______________.
C. Breakdown of food—releases __________
1. Respiration—chemical reactions that break down food molecules and release __________.
a. Glucose is broken into smaller molecules in a cell’s _____________.
b. Cellular respiration uses __________ to break down smaller molecules and occurs in cell’s
mitochondria.
2. _______________ is important because it provides plant cells with usable energy.
a. Energy helps plants _____________ and produce materials.
b. Waste product of respiration is __________________ which is returned to atmosphere.
D. Comparing photosynthesis and respiration—_______ processes.
1. Photosynthesis, occurring only in cells with _______________, combines carbon dioxide and water.
using light energy and releases glucose and oxygen.
2. Cellular respiration occurs in mitochondria of all cells and combines __________ and food to release
__________, carbon dioxide, and water.
Packet SRQ’s
1. Describe how gases enter and exit a leaf?
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2. Identify what must happen to glucose molecules before cellular respiration begins.
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3. Explain how plants contribute to humidity.
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4. How many CO2 molecules results from the breakdown of a glucose molecule (C6H12O6)? _____________