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NAS 2 CHALLANGE EXAM QUESTIONS WITH CORRECT ANSWERS
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NAS 2 CHALLANGE EXAM QUESTIONS WITH CORRECT ANSWERS...
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NAS 2 CHALLANGE EXAM QUESTIONS WITHCORRECT ANSWERS
What is the objective of the scientific process? - ANSWER to clearly execute an
experiment by method of steps, enabling you keep track and fix any mistakes, and
to demonstrate others how you came to the result that you obtained in conclusion.
Determine the goal of the scientific method - ANSWER 1. Ask a question.
2. Do background research.
3. Develop a hypothesis.
4. Experiment to test your hypothesis.
5. Analyze your findings and develop a conclusion.
6. Communicate the outcomes.
What is the distinction between an independent variable and a dependent variable?
- ANSWER The value of an independent variable can be altered. You can't change
the value of the dependent variable. The independent variable is the value that is
altered in an experiment. The dependent variable is compared to the control group
that did not receive the test variable.
Anatomy - ANSWER The study of the form and shape of the body, its parts, and
their relationships to one another.
Physiology is the study of how the body and its parts function.
Six levels of organization - ANSWER 1. Chemicals (atoms and molecules).
2. Cellular.
, 3. Tissue
4. Organ
5. Organ System
6. Organismal.
Identify Requirements for Life - Answer The ability to: maintain one's boundaries,
move, respond to stimuli, digest food, metabolize, eliminate waste, reproduce, and
grow.
Identify survival needs: ANSWER 1. Nutrients
2. Oxygen.
3. Water
4. Suitable temperature.
5. Suitable atmospheric pressure.
Homeostasis - Answer A balance in which internal conditions alter but are
constantly within relatively tight bounds.
Basic Mechanism for Homeostasis (receptor, control centre, etc) - ANSWER
Negative feedback mechanism.
Negative feedback mechanism - ANSWER Works to turn off the original stimulus
or lower its strength.
Positive feedback mechanism: ANSWER tends to increase the initial stimulus.
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