PSIO 201 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Metabolism - CORRECT ANSWER the sum of all chemical processes that occur in the body
catabolism (breaking down)
anabolism (construction
Responsiveness - CORRECT ANSWER the ability to respond to change in the internal or
external environment
Movement - CORRECT ANSWER at any structural level
the body, an organ, a cell or cell component
Growth an Differentiation - CORRECT ANSWER increase in number or size (growth) of cells
or the material found between cells
specialization (differentiation) of cells for a specific function
Reproduction - CORRECT ANSWER formation of new cells and formation of new individuals
Levels of Structural Organization in order - CORRECT ANSWER 1. Chemical level
(atom/molecule)
2. Cellular level (smallest unit in body)
3. Tissue level (group of cells)
4. Organ level (group of tissues)
5. Organ system level (group of organs)
5. Organism level (one living individual)
Homeostasis - CORRECT ANSWER the condition in which the body's internal environment is
relatively constant within physiological limits
Negative Feedback Loop - CORRECT ANSWER original stimulus is reversed
, used for conditions that need frequent adjustment (body temp, blood sugar levels, blood pressure, etc.)
Positive Feedback Loop - CORRECT ANSWER original stimulus intensified
5 Steps of the Scientific Method - CORRECT ANSWER 1. Observation
2. Hypothesis
3. Experimental Testing
4. Analysis & Conclusion
5. Development of a New Hypothesis
Steady-State - CORRECT ANSWER a 'constant' state maintained through time (generally far
away from equilibrium)
Equilibrium - CORRECT ANSWER a constant state achieved without energy expenditure
(maintenance of homeostasis is energetically 'expensive')
Organic Compounds - CORRECT ANSWER 1. Lipids (C & H)
2. Carbonates (C, H, & O)
3. Proteins (C, H, O, & N)
4. Nucleic Acids ( C, H, O, N, & P)
5. ATP (Adenosine TriPhosphate)
Physiological Membrane Composition - CORRECT ANSWER 1. Lipids (phospholipid)
2. Proteins (give cells function)
3. Carbohydrate
Amphipathic - CORRECT ANSWER both polar and non-polar
Primary Structure - CORRECT ANSWER poly-peptide strand
Secondary Structure - CORRECT ANSWER alpha helixes/ beta pleated sheets
QUESTIONS AND CORRECT ANSWERS
Metabolism - CORRECT ANSWER the sum of all chemical processes that occur in the body
catabolism (breaking down)
anabolism (construction
Responsiveness - CORRECT ANSWER the ability to respond to change in the internal or
external environment
Movement - CORRECT ANSWER at any structural level
the body, an organ, a cell or cell component
Growth an Differentiation - CORRECT ANSWER increase in number or size (growth) of cells
or the material found between cells
specialization (differentiation) of cells for a specific function
Reproduction - CORRECT ANSWER formation of new cells and formation of new individuals
Levels of Structural Organization in order - CORRECT ANSWER 1. Chemical level
(atom/molecule)
2. Cellular level (smallest unit in body)
3. Tissue level (group of cells)
4. Organ level (group of tissues)
5. Organ system level (group of organs)
5. Organism level (one living individual)
Homeostasis - CORRECT ANSWER the condition in which the body's internal environment is
relatively constant within physiological limits
Negative Feedback Loop - CORRECT ANSWER original stimulus is reversed
, used for conditions that need frequent adjustment (body temp, blood sugar levels, blood pressure, etc.)
Positive Feedback Loop - CORRECT ANSWER original stimulus intensified
5 Steps of the Scientific Method - CORRECT ANSWER 1. Observation
2. Hypothesis
3. Experimental Testing
4. Analysis & Conclusion
5. Development of a New Hypothesis
Steady-State - CORRECT ANSWER a 'constant' state maintained through time (generally far
away from equilibrium)
Equilibrium - CORRECT ANSWER a constant state achieved without energy expenditure
(maintenance of homeostasis is energetically 'expensive')
Organic Compounds - CORRECT ANSWER 1. Lipids (C & H)
2. Carbonates (C, H, & O)
3. Proteins (C, H, O, & N)
4. Nucleic Acids ( C, H, O, N, & P)
5. ATP (Adenosine TriPhosphate)
Physiological Membrane Composition - CORRECT ANSWER 1. Lipids (phospholipid)
2. Proteins (give cells function)
3. Carbohydrate
Amphipathic - CORRECT ANSWER both polar and non-polar
Primary Structure - CORRECT ANSWER poly-peptide strand
Secondary Structure - CORRECT ANSWER alpha helixes/ beta pleated sheets
