BIOLOGY 2401 EXAM 2 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. tissue
Answer:
a group of similar cells working together to perform a particular function
Question:
2. 4 major groups of tissue
Answer:
epithelial, connective, muscle, and nervous
Question:
3. histology
Answer:
the study of tissues
Question:
4. 2 most significant ways cells are stuck together
Answer:
1. via the "sticky" glycocalyx (sugar coats) on the surfaces of the cells
2. via specialized junctions (include desmosomes, tight junctions and gab
junctions)
Question:
5. - filamentous connections that not only hold adjacent cells together but also give
internal structural support to the cells
- do not prevent materials from passing in between the connected cells
Answer:
desmosomes
,Question:
6. plaque
Answer:
- each desmosome contains one located on the cytoplasmic surface
- consists of glycoproteins and resembles a tiny button
Question:
7. cadherins
Answer:
filamentous proteins that radiate out from the plaque and intertwine with cadherin
filaments from the adjacent cell
Question:
8. where are desmosomes found?
Answer:
in tissues that experience stretching, such as skin
Question:
9. tight junctions
Answer:
- continuous bands of protein that form an almost impenetrable barrier to prevent
substances from passing through the intercellular space between the connected
cells
- consist of occludins
Question:
10. occludins
Answer:
extend out from the plasma membrane of adjoining cells and fuse together
Question:
11. where are tight junctions found?
Answer:
in cells that line the stomach and intestines, and in cells that line blood vessels in
the brain
, Question:
12. tiny channels that allow materials to pass from the cytoplasm of one cell into the
cytoplasm of an adjacent cell
Answer:
gap junctions
Question:
13. when do gap junctions form?
Answer:
when transmembrane proteins called connexons in adjacent cells bind to one
another
Question:
14. where are gap junctions found?
Answer:
in cardiac and smooth muscle cells
Question:
15. epithelial tissue (epithelium)
Answer:
forms thin membranous coverings around and inside various organs and it forms
glands
Question:
16. how is epithelial tissue classified?
Answer:
as either membranous or glandular
QUESTIONS AND CORRECT ANSWERS
Question:
1. tissue
Answer:
a group of similar cells working together to perform a particular function
Question:
2. 4 major groups of tissue
Answer:
epithelial, connective, muscle, and nervous
Question:
3. histology
Answer:
the study of tissues
Question:
4. 2 most significant ways cells are stuck together
Answer:
1. via the "sticky" glycocalyx (sugar coats) on the surfaces of the cells
2. via specialized junctions (include desmosomes, tight junctions and gab
junctions)
Question:
5. - filamentous connections that not only hold adjacent cells together but also give
internal structural support to the cells
- do not prevent materials from passing in between the connected cells
Answer:
desmosomes
,Question:
6. plaque
Answer:
- each desmosome contains one located on the cytoplasmic surface
- consists of glycoproteins and resembles a tiny button
Question:
7. cadherins
Answer:
filamentous proteins that radiate out from the plaque and intertwine with cadherin
filaments from the adjacent cell
Question:
8. where are desmosomes found?
Answer:
in tissues that experience stretching, such as skin
Question:
9. tight junctions
Answer:
- continuous bands of protein that form an almost impenetrable barrier to prevent
substances from passing through the intercellular space between the connected
cells
- consist of occludins
Question:
10. occludins
Answer:
extend out from the plasma membrane of adjoining cells and fuse together
Question:
11. where are tight junctions found?
Answer:
in cells that line the stomach and intestines, and in cells that line blood vessels in
the brain
, Question:
12. tiny channels that allow materials to pass from the cytoplasm of one cell into the
cytoplasm of an adjacent cell
Answer:
gap junctions
Question:
13. when do gap junctions form?
Answer:
when transmembrane proteins called connexons in adjacent cells bind to one
another
Question:
14. where are gap junctions found?
Answer:
in cardiac and smooth muscle cells
Question:
15. epithelial tissue (epithelium)
Answer:
forms thin membranous coverings around and inside various organs and it forms
glands
Question:
16. how is epithelial tissue classified?
Answer:
as either membranous or glandular
