1. Chapter 1 Review
What is Life?

2. Unicellular organisms are composed of ________ cell(s).
one

3. Name the 5 of the characteristics of living things
Cellular organization, chemicals of life, use energy, respond to their surroundings, grow and develop, reproduce, have life spans

4. Name 2 of the chemicals of life
Carbohydrates, water, proteins and lipids, nucleic acids.

5. All organisms will die one day
All organisms will die one day. This means they have a ____________________
Life span

6. What is the basic unit of structure and function of an organism?
cell

7. What is the theory that living things arise from nonliving sources?
Spontaneous generation

8. What is the first step of the scientific method?
observation

9. What was Redi’s hypothesis?
Maggots do not come from meat

10. What did pasteur observe?
Bacteria grew in broth.

11. Describe Redi’s experiment…
He placed meat in two jars and covered one with cloth.

12. Describe pasteur’s experiment…
He placed broth in two flasks and boiled one.

13. What are the four basic needs of living things?
Food, water, living space, and homeostasis

14. What is water good for? Name 2.
To obtain chemicals from their surroundings
Break down food
Needed to grow and reproduce
Moves substances within an organism
Has the ability to dissolve more chemicals than any other substance

15. When two tests are carried out that are identical in every manner but one, it is a ______________________.
Controlled experiment

16. Organisms that can make their own food.
autotroph

17. Organisms that cannot make their own food.
heterotroph

18. What is homeostasis?
The maintenance of stable internal conditions.

19. Ancient earth’s atmosphere was composed of what gases?
Nitrogen, water vapor, carbon dioxide, methane

20. Earliest life forms appeared between ____________ billion years ago.

21. Did the first life forms need oxygen?no

22. Did the first life forms have many cells?no

23. Did the first life forms live in the ocean?
yes

24. What was the scientist name who tried to model conditions on early earth?
Stanley Miller

25. Why was the development of autotrophs on early earth necessary
They produced oxygen as a waste product

26. What is the metric unit for volume?
liter

27. What is used to measure volume?
Graduated cylider

28. What is the unit for mass
gram

29. Convert 78g = _____kg
.078 kg

30. Convert 78g = _____mg
78,000 mg

31. Convert 376 mL = _____L
0.376 L

32. Convert 847,300,000 mm = _____m
847,300 m

33. Convert 847,300 m = _____km
847.3 km

34. Study from your notes Vocabulary 7 Characteristics of Living Things
Biogenesis
Redi
Pasteur
Be able to apply the scientific method to their experiments
4 Basic Needs of Living Things
Metric units
study the chart
Be able to make conversions

35. Study from your notes Origin of Life
Atmosphere of Ancient Earth compared with Earth today
4 Hypotheses about the first life forms
Miller and Urey’s experiment
Why was the development of autotrophs important