NAS 2 Challenge Exam with Complete Solutions

What is the purpose of the scientific method - ANSWER-to clearly do an experiment by process of steps helping you keep track and correct any mistakes and to show others how you got to the result that you achieved in conclusion Identify the purpose of the scientific method - ANSWER-1.Ask a question 2.Do Background research 3 Construct a hypothesis your hypothesis by doing an experiment 5 analyze your data and draw a conclusion 6. Communicate your results What is the difference between an independent variable and and dependent variable - ANSWER-Value of an independent can be changed. You cannot change the value of dependent variable. the independent variable is the value which is manipulated in an experiment. The dependent variable is compared to the control group, which does not recieve the test variable Anatomy - ANSWER-The study of structure and shape of the body and its parts and relation to one another Physiology - ANSWER-Study of how the body and its parts work or 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,excrete waist,reproduce,grow Identify survival needs - ANSWER-1. Nutrients 2. Oxygen 3. Water 4. Appropriate temperture 5. Appropriate atmospheric pressure Homeostasis - ANSWER-A balance in which internal conditions change and very but always within relatively narrow limits