NAS 2 Challenge Practice Exam Questions and Answers 2024

NAS 2 Challenge Practice Exam Questions and Answers 2024 What is the purpose of the scientific method - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-The study of structure and shape of the body and its parts and relation to one another Physiology - CORRECT ANSWER-Study of how the body and its parts work or function Six Levels of organization - CORRECT ANSWER-1. Chemicals (atoms and molecules) 2. Cellular 3. Tissue 4. Organ 5. Organ system 6. Organismal Identify Requirements for Life - CORRECT ANSWER-The ability to :maintain one's boundaries, move ,respond to stimuli,digest food, metabolize,excrete waist,reproduce,grow Identify survival needs - CORRECT ANSWER-1. Nutrients 2. Oxygen 3. Water 4. Appropriate temperture 5. Appropriate atmospheric pressure Homeostasis - CORRECT ANSWER-A balance in which internal conditions change and very but always within relatively narrow limits Basic Mechanism for homeostasis (receptor, control center, etc) - CORRECT ANSWER-Negative feedback mechanism Negative feedback mechanism - CORRECT ANSWER-Works to shut off original stimulus or reduce its intensity Positive feedback mechanism - CORRECT ANSWER-tend to increase the original stimulus Anatomical Position - CORRECT ANSWER-the body is erect with the feet parallel and the arms hanging at the side with palms facing forward Superior (Cranial/Cephalid) - CORRECT ANSWER-Toward the head end or upper part of the structure;above Dorsal/Posterior - CORRECT ANSWER-Toward the backsid