Unit 1 Review

1
Unit 1 Review
2
Controlled Experiments

• Involve one variable that changes
• Variables
• Independent the variable you are testing
• Dependent the variable that changes as a
  result, the data you collect
• Controlled the variables that stay the same in
  all setups
• Groups
• Control the group that does not have the
  variable being tested (or at normal conditions)
• Experimental groups that have different levels
  of the variable being tested.

3

• A controlled experiment allows a scientist to
  isolate and test
• A. A logical conclusion
• B. A variety of information
• C. A single variable
• D. Several Variables

4

• The development of an experimental research plan
  should NOT include
• A. A list of safety precautions for the
  experiment
• B. List of equipment needed for conducting the
  experiment
• C. Procedure for the use of technologies needed
  for the experiment
• D. Conclusion based on the data expected to be
  collected during the experiment

5
While outside raking leaves, you notice several
slugs underneath fallen leaves and logs.
Describe some parts of an experiment to determine
the preference of slugs for light or darkness.
Make sure you

• State the hypothesis
• Identify the independent variable
• Identify two conditions that should stay the same
  in all experimental setups
• State one example of the data that would support
  your hypothesis

6
Characteristics of life

• Living things are made of cells
• Living things grow and develop
• Living things have levels of organization
• Living Things reproduce
• Living things use energy
• Living things respond to their environment
• Groups of Living things evolve

7
Life Functions

• Nutrition (Ingestion, Digestion)
• Transport
• Excretion
• Reproduction
• Respiration (Energy)
• Synthesis
• Regulation
• Growth
• Metabolism

8

• A characteristic of all living things is that
  they
• A. Use carbon dioxide
• B. Use atmospheric oxygen
• C. Carry on metabolic Activities
• D. Are capable of locomotion

9

• It is known that laboratory rats do not require
  vitamin C in their diet. However, vitamin C is
  found in their tissues. The vitamin C is present
  due to a process known as
• A. Excretion
• B. Locomotion
• C. Synthesis
• D. Osmosis

10

• Which term includes all the activities required
  to keep an organism alive?
• A. Metabolism
• B. Growth
• C. Nutrition
• D. Excretion

11

• An activity carried on by every living plant and
  animal is
• A. Reproduction
• B. Respiration
• C. Photosynthesis
• D. Transpiration

12

• An organelle differs from an organ in that an
  organelle
• A. Is a substructure of a cell
• B. Contains one specific type of tissue
• C. Is larger than an organ
• D. Cannot be stained

13
Write the structure listed below in order from
least to most complex

• Organ
• Cell
• Organism
• Atom
• Organelle
• Molecule
• Tissue
• Organ System

14
Homeostasis

• Maintaining a stable internal environmental in a
  changing external environment
• Insulin lowers blood sugar
• Stomata Guard cells get larger the stomata
  (openings) are smaller so less water is lost from
  plants on a hot day
• Sweat evaporates to lower our body temperature

15

• Homeostatic regulation of the body is made
  possible through the coordination of all body
  systems. This coordination is achieved mainly
  by
• A. Skeletal and excretory systems
• B. Respiratory and Reproductive Systems
• C. Nervous and endocrine systems
• D. Circulatory and digestive systems

16

• Explain how guard cells in both land and water
  plants help maintain homeostasis. In your answer
  be sure to
• Identify one function regulated by guard cells in
  leaves
• Explain how guard cells carry out this function

17
Measurement

• Metric System prefixes
• K H Da Base d c m
• Mass grams triple beam balance
• Volume liter graduated cylinder/beaker
• Length meters ruler
• Know parts of the microscope

18

• The width of a human hair is 0.1 mm. The width
  of this hair in meters is
• A. 1 meter
• B. 10 meters
• C. 0.001 meters
• D. 0.0001 meters