PHA1500 Structure and Function of the Human Body
Module 1 Reflection Assignment
Directions: Save this document to your computer. Answer all questions below and
upload the completed document before the assignment due date. Refer to the
rubric for grading criteria.
Short Answer Questions
Directions: For each short answer question, please type your response below the
question.
1. Define the term homeostasis. Why is it important for the body to
maintain homeostasis? What happens if the body loses homeostasis?
A state of balance among all the body systems. It helps the body
survive and function. If the body loses homeostasis it goes out of
control causing illness.
2. How do negative feedback loops help the body maintain homeostasis?
Discuss one example of a negative feedback loop in the body.
It allows systems to be stabilized. For example, having water intake
and the loss. Water levels in the body can drop if a person doesn't
drink enough water.
3. What is diffusion? How does diffusion work to move materials across
the plasma membrane of a cell?
, Diffusion is the movement of particles from higher to lower concentrations.
Different substances like oxygen, carbon dioxide and glucose move in and out
of cells by diffusion. A molecule dissolves in the bilayer and diffuses across it.
Once its diffused it dissolves into a solution.
Drawing Prompts
For each drawing prompt below, take a photo of your hand-drawn image. Paste the
image into the space below the corresponding prompt.
4. Draw a human cell, making sure to include and label each of the
following structures:
a. Centriole
b. Cytoplasm
c. Golgi apparatus
d. Lysosome
e. Mitochondria
f. Nucleus
g. Plasma membrane
h. Ribosomes
i. Rough endoplasmic reticulum
j. Smooth endoplasmic reticulum
Module 1 Reflection Assignment
Directions: Save this document to your computer. Answer all questions below and
upload the completed document before the assignment due date. Refer to the
rubric for grading criteria.
Short Answer Questions
Directions: For each short answer question, please type your response below the
question.
1. Define the term homeostasis. Why is it important for the body to
maintain homeostasis? What happens if the body loses homeostasis?
A state of balance among all the body systems. It helps the body
survive and function. If the body loses homeostasis it goes out of
control causing illness.
2. How do negative feedback loops help the body maintain homeostasis?
Discuss one example of a negative feedback loop in the body.
It allows systems to be stabilized. For example, having water intake
and the loss. Water levels in the body can drop if a person doesn't
drink enough water.
3. What is diffusion? How does diffusion work to move materials across
the plasma membrane of a cell?
, Diffusion is the movement of particles from higher to lower concentrations.
Different substances like oxygen, carbon dioxide and glucose move in and out
of cells by diffusion. A molecule dissolves in the bilayer and diffuses across it.
Once its diffused it dissolves into a solution.
Drawing Prompts
For each drawing prompt below, take a photo of your hand-drawn image. Paste the
image into the space below the corresponding prompt.
4. Draw a human cell, making sure to include and label each of the
following structures:
a. Centriole
b. Cytoplasm
c. Golgi apparatus
d. Lysosome
e. Mitochondria
f. Nucleus
g. Plasma membrane
h. Ribosomes
i. Rough endoplasmic reticulum
j. Smooth endoplasmic reticulum
