Cellular Respiration &
Photosynthesis Overview
Cellular Respiration & Photosynthesis
Overview
1. Define cellular respiration.
A process that releases energy
from food, such as the simple
sugar glucose, when there is
oxygen present.
2. Define photosynthesis.
Photosynthesis is the process by
which photosynthetic organisms
convert solar energy into
chemical energy stored in sugars.
Cellular Respiration & Photosynthesis
Overview
3. Name several organisms that undergo cellular
respiration
Nearly all living things undergo cellular respiration*.
Exceptions include a few microscopic marine animals (Loricifera)
and some bacteria.
4. Name several photosynthetic organisms.
Algae
Trees
Cyanobacteria
Cellular Respiration & Photosynthesis
Overview
5. Using chemical formulas, write the balanced
equation for cellular respiration.
6O2 + C6H12O6
6CO2 + 6H2O + Energy
6. Using chemical formulas, write the balanced
equation for photosynthesis.
6CO2 + 6H2O
Sunlight
C6H12O6 + 6O2
Cellular Respiration & Photosynthesis
Overview
7. What organelle in eukaryotes is involved in
cellular respiration?
The mitochondrion
8. What is a common analogy for mitochondria?
Mitochondria are sometimes
called “cellular power plants” or
the “powerhouses” of the cell.
Cellular Respiration & Photosynthesis
Overview
9. What organelle in plants is involved in
photosynthesis?
The chloroplast
10. What gives it the green color?
The pigment chlorophyll
Cellular Respiration & Photosynthesis
Overview
11. Identify the mitochondria in this micrograph of
a human pancreatic cell.
The pancreas
secretes insulin
in response to
glucose levels
in the blood.
Mitochondria
Endoplasmic
reticulum
Nucleus
Nucleolus
Pancreas
Pancreas cell
Cellular Respiration & Photosynthesis
Overview
12. Identify the chloroplasts in this micrograph of
elodea cells.
Chloroplasts
Elodea plant
Elodea plant cells
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
13
14
15
20
16
19
17
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
14
15
20
16
19
17
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
15
20
16
19
17
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
20
16
19
17
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
20
Chloroplast
19
17
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
20
Chloroplast
19
Glucose
Photosynthesis Outputs
18
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
20
Chloroplast
19
Glucose
Photosynthesis Outputs
Oxygen
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
20
Chloroplast
Mitochondrion
Glucose
Photosynthesis Outputs
Oxygen
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
Fill in the boxes in the diagram below.
Cellular respiration Outputs
Photosynthesis Inputs
Light
Carbon dioxide
Water
ATP
Chloroplast
Mitochondrion
Glucose
Photosynthesis Outputs
Oxygen
Cellular respiration Inputs
Cellular Respiration & Photosynthesis
Overview
21. How are processes like cellular respiration and
photosynthesis regulated within a cell?
Cellular processes are regulated in two main ways:
1) The availability of inputs. For example, if
there is no sunlight, then photosynthesis shuts
down. If CO2 is in low supply, then not much sugar
gets made. If H2O is absent, then solar energy is not
converted into chemical energy.
2) Activation of genes that make the enzymes that
control how fast sugar gets made.