NAS 2 Challenge Exam TCC UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Purpose of the scientific method - CORRECT ANSWER - To solve or answer a question.
Or to test a hypothesis
Steps of the scientific method - CORRECT ANSWER - Question, hypothesis, experiment,
record, observe/analyze, conclude, repeat
Independent Variable - CORRECT ANSWER - A variable that stands alone and isn't
changed by other variables. Example: age
Dependent Variable - CORRECT ANSWER - Variable that is dependent on other factors.
Example test score.
Control Group - CORRECT ANSWER - Does not receive treatment in the experiment
Experimental Groups - CORRECT ANSWER - Group exposed to changes of the
independent variable
Levels of organization - CORRECT ANSWER - Organelle
Cell
Tissue
Organ
Organ System
Organism
Requirements for life (5) - CORRECT ANSWER - Cellular Organization
, Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
Adaptation through evolution
Survival Needs - CORRECT ANSWER - Food, oxygen, water, body temp,
Homeostasis - CORRECT ANSWER - Constant internal physical and chemical conditions
that organisms have to maintain
Receptor - CORRECT ANSWER - Senses environment stimulus and sends info to the
control center
Control Center - CORRECT ANSWER - Where the hypothalamus is located and the
signals effector
Effector - CORRECT ANSWER - Responds to stimuli
Example: Muscle Contracting
Electron - CORRECT ANSWER - Negative charge particle, outer shell
Proton - CORRECT ANSWER - Positive, nucleus
Neutrons - CORRECT ANSWER - no charge, nucleus
ACTUAL Exam Questions and CORRECT
Answers
Purpose of the scientific method - CORRECT ANSWER - To solve or answer a question.
Or to test a hypothesis
Steps of the scientific method - CORRECT ANSWER - Question, hypothesis, experiment,
record, observe/analyze, conclude, repeat
Independent Variable - CORRECT ANSWER - A variable that stands alone and isn't
changed by other variables. Example: age
Dependent Variable - CORRECT ANSWER - Variable that is dependent on other factors.
Example test score.
Control Group - CORRECT ANSWER - Does not receive treatment in the experiment
Experimental Groups - CORRECT ANSWER - Group exposed to changes of the
independent variable
Levels of organization - CORRECT ANSWER - Organelle
Cell
Tissue
Organ
Organ System
Organism
Requirements for life (5) - CORRECT ANSWER - Cellular Organization
, Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
Adaptation through evolution
Survival Needs - CORRECT ANSWER - Food, oxygen, water, body temp,
Homeostasis - CORRECT ANSWER - Constant internal physical and chemical conditions
that organisms have to maintain
Receptor - CORRECT ANSWER - Senses environment stimulus and sends info to the
control center
Control Center - CORRECT ANSWER - Where the hypothalamus is located and the
signals effector
Effector - CORRECT ANSWER - Responds to stimuli
Example: Muscle Contracting
Electron - CORRECT ANSWER - Negative charge particle, outer shell
Proton - CORRECT ANSWER - Positive, nucleus
Neutrons - CORRECT ANSWER - no charge, nucleus
