1. The Six Characteristics of Living Things Review
Chapter 2, section 1
The Six Characteristics of Living Things Review

2. All Living Things Have cells covered by membrane
2. Sense and respond to change A change that causes an organism to react is
stimuli

3. Homeostasis
Maintaining a constant, internal environment

4. All Living Things
3. Reproduce Sexual – 2 parents, similar offspring Asexual – 1 parent, identical offspring 4. Have DNA

5. Heredity
Passing traits to the next generation

6. All Living Things
5. Use energy All the chemical activities that an organism performs are called Metabolism. ex: Taking in food, breaking down food (digestion), moving materials into and out of cells

7. All Living things
6. Grow and develop

8. Chapter 2, section 2
Review

9. Four things all organisms need:
Water – Used in all
Chemical reactions
2. Air- O2 and CO2
3. Food
4. A place to live

10. Organisms get their food in different ways.
Some make their own food. They are
Producers

11. Organisms get their food in different ways.
Some eat other organisms for food. They are
Consumers

12. Organisms get their food in different ways.
Some consumers get food by breaking down dead organisms or waste. They are
Decomposers

13. Proteins
Large molecules made up of small molecules called
Amino acids

14. Jobs of proteins
Protect cells
Repair cells
Help cells grow

15. Two special proteins:
The protein that binds to oxygen to deliver and release oxygen throughout the body:
hemoglobin
The protein that starts or speeds up chemical reactions in cells:
enzymes

16. Carbohydrates
Molecules made up of
Sugars

17. Jobs of carbohydrates Give energy Store energy
Release energy when they are broken down.

18. Types of Carbohydrates
Have one or a few sugar molecules. Easy to break down:
Simple carbohydrates (chocolate, candy)
Have hundreds of sugar molecules. Take longer to break down:
Complex carbohydrates (whole gran pasta, bread, etc.)

19. Lipids Are compounds that can’t mix with Water Examples:
Butter, margarine, olive oil

20. Jobs of Lipids Store energy: Fats and oils
Form the membranes of cells:
Phospholipids: lipid + phosphorous make the cell membranes

21. ATP Adesonine Triphosphate Main source for cells
Comes from breaking down the carbs and lipids (NOT protein!!)
Used to fuel your metabolism

22. Nucleic Acids Blueprints of life! Contain the energy to make: Proteins
Large molecules made up of :
Nucleotides
The nucleic acid that gives direction and information to cells is:
DNA

23. Review
Plants store extra sugar as lipids, starch, proteins, or nucleic acids:
STARCH!

24. Review
Fats and oils are proteins, lipids, carbohydrates, or nucleic acids.
LIPIDS!

25. Review
The protein ________________________ delivers and releases oxygen throughout the body.
HEMOGLOBIN!

26. Review
_____________________________ are made up of one sugar molecule or a few sugar molecules linked together
SIMPLE CARBOHYDRATES!