BIOLOGY
18 Sep 2015
Entry Task
** Turn in CER to front table with rubric stapled to front
the core of every organism’s interaction with the environment
is its need for energy to power life’s process. Energy is
needed just to get out of bed and make it to school daily.
In your science notebook, write your answers
• Where does energy in living systems come from?
• How is energy transferred from one organism to another?
Agenda
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Entry Task
Housekeeping
The Biosphere (Chapter 3)
Energy, Producers, &
Consumers (Chapter 3.2)
• Learning Objectives
• Exit Task
Housekeeping
• Bring your Biology books Monday.
- Monday, 21 Sept.
• CER due.
Ch 3 Essential Question
How do living and nonliving parts of the Earth interact and
affect the survival of organisms?
Learning Objectives
LO 3.2.1 Define primary producers
LO 3.2.2 Describe how consumers obtain energy and
nutrients
Primary Producers
What are primary producers?
• The first producers of energy-rich compounds that are later
used by organisms.
• Autotrophs: auto = “by itself” & trophikos = “to feed”
- photosynthesis
- chemosynthesis
p. 69
Photosynthesis
What is photosynthesis?
• The process of capturing
light energy and using it to
power chemical reactions.
• Converts carbon dioxide
and water into oxygen and
carbohydrates
p. 70
Chemosynthesis
What is chemosynthesis?
• The process of using
chemical energy to power a
chemical reaction.
Dissolved
Oxygen
• Converts carbon dioxide,
hydrogen sulfide, and
oxygen into sulfur
compounds and
carbohydrates.
p. 70
Photosynthesis vs.
Chemosynthesis
In your notebook, draw a T chart and on the left side label
similarities, on the right label difference.
Use figure 3.5 on page 70 of your book to fill in your T chart.
You may discuss and develop ideas with your group
Same
Different
p. 70
Consumers
What are consumers?
• Organisms that rely on other organisms for energy and
nutrients.
• Heterotrophs: must acquire energy from other organisms.
- Carnivores
- Herbivores
- Omnivores
- Detritivores
- Decomposers
- Scavengers
p. 71
Consumers
Heterotrophs: must acquire energy from other organisms
• Carnivores
- Kills and eats other animals.
• Herbivores
- obtains energy and nutrients from eating plant leaves,
roots, seeds, or fruits.
• Omnivores
- Diet naturally includes a variety of different foods that
usually include both plants and animals.
p. 71
Consumers
• Detritivores
- Feed on detritus particles, often grinding them into even
smaller pieces.
• Decomposers
- “Feed” by chemically breaking down organic matter.
• Scavengers
- Consume carcasses of other animals that have been
killed by predators or have died of other causes
p. 71
Check on Learning
• How do producers make energy-rich compounds?
• How do consumers get the energy they need to survive?
• What are some different categories of consumers?
p. 69-71
Exit Task
• What are the two primary sources of energy that
power living systems? Give a description each.
• Reflection: Do you think you could list the 6
consumers and where they obtain their energy?
Why or why not?