NAS 2 Challenge Exam TCC UPDATED
ACTUAL 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
Ionic Bond - CORRECT ANSWER✔✔- Chemical bond formed between two ions that are
opposite charges, atom gives up one or more electrons to another atom
ACTUAL 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
Ionic Bond - CORRECT ANSWER✔✔- Chemical bond formed between two ions that are
opposite charges, atom gives up one or more electrons to another atom
