EXAM 1 PCB 3702 LATEST 2025 WITH QUESTIONS
AND WELL DETAILED ANSWERS GRADED A+
GUARANTEED PASS|| LATEST UPDATE 2025/26
What is Physiology? -CORRECTANSWER -Study of biological function; how the body
works
What are the steps of the Scientific Method? -CORRECTANSWER -make observations
-form testable hypothesis
-design and conduct experiment
-make observations
-analyze data
-replicate results
What determines a good physiological research? -CORRECTANSWER -Quantifiable
measurements
-experimental group and a control group
-Statistical analysis
-Review and publication by a peer-reviewed journal
What are the 4 phases of clinical trails? -CORRECTANSWER Phase 1: test drug on
healthy human volunteers
Phase 2:test drug on people infected with disease
Phase 3: tested on large diverse group of people. FDA approve drug for sale
,Phase 4: test other applications of drug
What are the 6 levels of organization? -CORRECTANSWER -molecule
-cell
-tissue
-organ
-system
-organism
What are the four major categories of tissues? -CORRECTANSWER -muscle tissue
-nervous tissue
-epithelial tissue
-connective tissue
What are the three types of muscle tissue? -CORRECTANSWER -skeletal muscle
(voluntary)
-cardiac muscle (involuntary)
-smooth muscle
What are the two main categories of mucle tissue? -CORRECTANSWER -autonomic
(involuntary)- smooth and cardiac
-somatic (voluntary)- skeletal
,What is smooth muscle tissue? -CORRECTANSWER -found in hollow organs
-Found in the walls of digestive, urinary, and reproductive organs, blood vessels, and
bronchioles of the lungs
What is nervous tissue? -CORRECTANSWER -found in brain, spinal cord, and nerves
-composed of neurons and neuroglia
What is epithelial tissue? Types? -CORRECTANSWER -Forms the membranes that
cover body surfaces, line the inside of hollow organs, and glands
-has Simple epithelium (one layer) and Stratified epithelium (multiple layers)
What is the difference between simple epithelium and stratified epithelium? -
CORRECTANSWER -Simple epithelium: has one layer and is specialized for transport
of substances.
-Stratified epithelium: has multiple layers and provides protection.
What is connective tissue? Types? -CORRECTANSWER -a matrix made up of protein
fibers, extracellular material, and specialized cells
-Types: cartilage, bone, and blood
How many organ systems are there? Name them. -CORRECTANSWER -11
-integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, circulatory,
respiratory, digestive, urinary, and reproductive systems
, How is homeostasis maintained? explain it? -CORRECTANSWER -by negative
feedback system which is a reaction that causes a decrease in function in response to a
stimulus
-neg feedback also regulates regulation of glucose
What is homeostasis? -CORRECTANSWER -Dynamic Constancy in body's internal
environment
What is positive feedback system? example? -CORRECTANSWER -stimulus produces
a response that reinforces or strengthens a stimulus
-example is child birth with oxytocin
What is the structure of the plasma membrane?
Where are the hydrophobic/ hydrophilic centers? -CORRECTANSWER -hydrophobic
tail in center of membrane
-hydrophilic head
-membranes are fluid structures
-negative inside the cell
Describe hydrophilic and hydrophobic substances movements across membrane. -
CORRECTANSWER -Small, hydrophobic substances pass freely through the
phospholipid bilayer
AND WELL DETAILED ANSWERS GRADED A+
GUARANTEED PASS|| LATEST UPDATE 2025/26
What is Physiology? -CORRECTANSWER -Study of biological function; how the body
works
What are the steps of the Scientific Method? -CORRECTANSWER -make observations
-form testable hypothesis
-design and conduct experiment
-make observations
-analyze data
-replicate results
What determines a good physiological research? -CORRECTANSWER -Quantifiable
measurements
-experimental group and a control group
-Statistical analysis
-Review and publication by a peer-reviewed journal
What are the 4 phases of clinical trails? -CORRECTANSWER Phase 1: test drug on
healthy human volunteers
Phase 2:test drug on people infected with disease
Phase 3: tested on large diverse group of people. FDA approve drug for sale
,Phase 4: test other applications of drug
What are the 6 levels of organization? -CORRECTANSWER -molecule
-cell
-tissue
-organ
-system
-organism
What are the four major categories of tissues? -CORRECTANSWER -muscle tissue
-nervous tissue
-epithelial tissue
-connective tissue
What are the three types of muscle tissue? -CORRECTANSWER -skeletal muscle
(voluntary)
-cardiac muscle (involuntary)
-smooth muscle
What are the two main categories of mucle tissue? -CORRECTANSWER -autonomic
(involuntary)- smooth and cardiac
-somatic (voluntary)- skeletal
,What is smooth muscle tissue? -CORRECTANSWER -found in hollow organs
-Found in the walls of digestive, urinary, and reproductive organs, blood vessels, and
bronchioles of the lungs
What is nervous tissue? -CORRECTANSWER -found in brain, spinal cord, and nerves
-composed of neurons and neuroglia
What is epithelial tissue? Types? -CORRECTANSWER -Forms the membranes that
cover body surfaces, line the inside of hollow organs, and glands
-has Simple epithelium (one layer) and Stratified epithelium (multiple layers)
What is the difference between simple epithelium and stratified epithelium? -
CORRECTANSWER -Simple epithelium: has one layer and is specialized for transport
of substances.
-Stratified epithelium: has multiple layers and provides protection.
What is connective tissue? Types? -CORRECTANSWER -a matrix made up of protein
fibers, extracellular material, and specialized cells
-Types: cartilage, bone, and blood
How many organ systems are there? Name them. -CORRECTANSWER -11
-integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, circulatory,
respiratory, digestive, urinary, and reproductive systems
, How is homeostasis maintained? explain it? -CORRECTANSWER -by negative
feedback system which is a reaction that causes a decrease in function in response to a
stimulus
-neg feedback also regulates regulation of glucose
What is homeostasis? -CORRECTANSWER -Dynamic Constancy in body's internal
environment
What is positive feedback system? example? -CORRECTANSWER -stimulus produces
a response that reinforces or strengthens a stimulus
-example is child birth with oxytocin
What is the structure of the plasma membrane?
Where are the hydrophobic/ hydrophilic centers? -CORRECTANSWER -hydrophobic
tail in center of membrane
-hydrophilic head
-membranes are fluid structures
-negative inside the cell
Describe hydrophilic and hydrophobic substances movements across membrane. -
CORRECTANSWER -Small, hydrophobic substances pass freely through the
phospholipid bilayer
