NAS 2 Exam TCC Study Guide: Questions With Fully
Explained Answers
Scientific Method Correct Answer - Guides researchers in planning,
conducting, and interpreting research studies.
Order of scientific method: Correct Answer - 1. Observation
2. Question
3. Hypothesis
4. Prediction
5. Experiment
6. Conclusion
Steps of the Scientific Method: Correct Answer - 1. Ask a question
2. Background research
3. Construct Hypothesis
4. Test hypothesis by experiment
5. Analyze data / draw conclusions
6. Communicate results.
independent variable Correct Answer - changed or controlled in specific
environment to test effects on the dependent variable.
dependent variable Correct Answer - the variable being tested and
measured in an environment
control group Correct Answer - does not receive variable
experimental group Correct Answer - group that receives the variable
being treated
hypothesis Correct Answer - testable prediction, often implied by a
theory.
theory Correct Answer - hypothesis that has been tested with a
significant amount of data.
, sample size Correct Answer - number of times a measurement is
replicated in data collection
trial Correct Answer - number of times experiment is repeated
placebo Correct Answer - something which has positive mental effect,
but no physical effect.
Basic properties of life: Correct Answer - 1. reproduction
2. response/reaction to environment
3. metabolism
4. growth
leves of organization: Correct Answer - 1. chemical
2. cell
3. tissue
4. organ
5. organ system
6. organism
chemical Correct Answer - any substance that has a definite
composistion
cell Correct Answer - basic unit of structure and function
tissue Correct Answer - group of similar cells that perform the same
function.
organ Correct Answer - collection of tissues that carry out specialized
function of the body.
organ system Correct Answer - group of organs working together to
perform major function.
organism Correct Answer - living thing
homeostasis Correct Answer - process which organisms maintain a
relatively stable internal environment.
Explained Answers
Scientific Method Correct Answer - Guides researchers in planning,
conducting, and interpreting research studies.
Order of scientific method: Correct Answer - 1. Observation
2. Question
3. Hypothesis
4. Prediction
5. Experiment
6. Conclusion
Steps of the Scientific Method: Correct Answer - 1. Ask a question
2. Background research
3. Construct Hypothesis
4. Test hypothesis by experiment
5. Analyze data / draw conclusions
6. Communicate results.
independent variable Correct Answer - changed or controlled in specific
environment to test effects on the dependent variable.
dependent variable Correct Answer - the variable being tested and
measured in an environment
control group Correct Answer - does not receive variable
experimental group Correct Answer - group that receives the variable
being treated
hypothesis Correct Answer - testable prediction, often implied by a
theory.
theory Correct Answer - hypothesis that has been tested with a
significant amount of data.
, sample size Correct Answer - number of times a measurement is
replicated in data collection
trial Correct Answer - number of times experiment is repeated
placebo Correct Answer - something which has positive mental effect,
but no physical effect.
Basic properties of life: Correct Answer - 1. reproduction
2. response/reaction to environment
3. metabolism
4. growth
leves of organization: Correct Answer - 1. chemical
2. cell
3. tissue
4. organ
5. organ system
6. organism
chemical Correct Answer - any substance that has a definite
composistion
cell Correct Answer - basic unit of structure and function
tissue Correct Answer - group of similar cells that perform the same
function.
organ Correct Answer - collection of tissues that carry out specialized
function of the body.
organ system Correct Answer - group of organs working together to
perform major function.
organism Correct Answer - living thing
homeostasis Correct Answer - process which organisms maintain a
relatively stable internal environment.
