Homeostasis and Systems Test ReviewName:

Identify the system:

1) Transports gases, nutrients, hormones and waste. ___________________________________________________

2) Receives messages and sends out messages to control the other systems. ________________________________

3) Filters the blood and helps to maintain the balance between of water and salts in the blood.___________________

4) Breaks down food, absorbs nutrients, and gets rid of solid waste. _________________________________________

5) Takes in oxygen and removes carbon dioxide from the body. _____________________________________________

6) Forms a barrier over the body and is the first line of defense against bacteria. ________________________________

7) Fights infection inside the body using white blood cells. __________________________________________________

8) Makes hormones that are used to help the body maintain homeostasis ______________________________________

9) Attaches to the skeleton for movement _______________________________________________________________

10) Provides structure, protection and support for the body_________________________________________________

11) Creates sperm and eggs. __________________________________________________________________________

Identify the system or systems that would have a dysfunction (not be working) in each of the following situations.

12) Gases are not being delivered to or from the cell ______________________________________________________

13) Diabetes is a dysfunction of which system?____________________________________________________________

14) Sickle Cell Anemia is a problem with which system?_____________________________________________________

15) Overhydration/Low sodium level is a problem with which system?_________________________________________

16) Having a high temperature after running a race is a problem with which system?______________________________

17) Having protein in the urine would be a problem with which system?________________________________________

Scientific Method:

18) What is the purpose of a positive control?_____________________________________________________________

19) What is the purpose of a negative control?____________________________________________________________

Transport of molecules (Osmosis/Diffusion)

20) What type of transport causes oxygen to move into the bloodstream from the lungs?__________________________

21) What type of transport allows water to move across a membrane from high to low concentration?_______________

22) Describe how a cell would change if you drank salt water.________________________________________________

23) Describe how the cells of your body would be affected if you drank too much water._________________________

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24) Why could drinking too much water cause a person to lose consciousness or become confused?_________________

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25) What happens to the sodium concentration levels in your cells if you drink too much water? ______________________________________________________________________________________________

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Homeostasis and Feedback

26) What is positive feedback? (give an example)__________________________________________________________

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27) What is negative feedback? (give an example)________________________________________________________

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Identify what is happening in each stage

28) A _____________________________________________________________________________________

29) B and C ________________________________________________________________________________

30) D_____________________________________________________________________________________

31) E_____________________________________________________________________________________

32) F______________________________________________________________________________________

33) G______________________________________________________________________________________

34) How do you describe the condition in the very center of the diagram?______________________________

35) What part of the body acts as the receptor to determine the temperature?_______________________________

36) Is this an example of positive or negative feedback?___________________________________________________

37) What systems are involved in this feedback loop?______________________________________________________

38) What might happen if there is a dysfunction in this feedback loop?________________________________________

Figure 1: What happens where there is too much water Figure 2: How the body regulates electrolytes such as potassium (K) and sodium (Na)39) The figure 1 and 2 to explain how the body would attempt to bring a person back to homeostasis if a person drank too much water and their electrolyte balance decreased. _________________________________________________

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40) What systems are involved in maintaining the correct levels of water/electrolytes in the body?________________

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41) Put the following in order from smallest to largest: Tissue, System, Organism, Cell, Organ

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Cell Parts and Specialized Cells (Structure and Function)

42) What is the function of a nerve cell? __________________________________________ How does it’s shape help it to meet its function?_______________________________________________________________________________

43) Identify 3 parts/organelles in a sperm cell that would help it meets its function. ________________________________________________________________________________________________

44) What is the purpose of the mitochondria? ___________________________________________________________

45) What is contained in the nucleus___________________________________________________________________

46) What is the purpose of a lysosome?________________________________________________________________

47) What is the purpose of a flagella?_________________________________________________________________

48) How does the shape of a red blood cell help it meets its function?_________________________________________

Identify the cells/tissue below.

nerve cells, muscle cells, red blood cells, sperm cells, bone cells, fat cells, leaf cells and root cells