A&P All Unit 2.2 Do Nows - Cytology
1. What is the function of the cytoskeleton? [2]
a. What is it made of? [2]
2. What is the function of the cell membrane? [1]
a. What is it made of? [1]
b. Name one other molecule found embedded (stuck in) the cell membrane, and
state the function of this embedded molecule. [2]
3. What is the function of the Rough Endoplasmic Reticulum? What is the structure that
gives the RER its name? [2]
4. Identify two organs in the body and state the function of the Smooth Endoplasmic
Reticulum (SER) in that organ. [2]
5. What is the function of the Golgi apparatus? [1]
6. Draw a quick sketch of the Golgi apparatus, and label the cis and the trans faces. Be sure
to include vesicles! [3]
7. What is a lysosome made out of? [1] ________________________________
8. List two functions of lysosomes in the human body. [2]
9. List two functions of peroxisomes. [2]
a. What chemical gives this structure its name? [1] ____________________
10. What is the function of a mitochondrion? [1]
11. Draw a quick sketch of a mitochondrion and label the outer membrane, inner
membrane, cristae and matrix. [4]
12. When you first learned about cells in biology class, they all looked the same. Now we
have seen many examples of human body cells with very different appearances and
structure.
Explain how any why cells in the human body end up looking so different from each
other, even though they share the same DNA. [2]
13. What type of plasma membrane junction is used to anchor cells together so that tissues
(sheets of cells) don’t tear apart? ________________________[1]
14. Sketch this type of membrane junction between two cells [2]
15. a) What is the purpose of pseudopodia?
b) What type of cell in the human body has pseudopodia?
______________________________.
16. a) What is the purpose of cilia?
b) Where in the body are cilia found? ______________________________.