Cell Biology Answers

1.3) Provide the location and function for each of the following cell junctions:

1. Desmosomes; 2.Tight junctions; 3.Gap junctions; 4.Plasmodesmata

1.3) What is the name of the protein involved in the bending motion of a cilium?

1.3) Name the structure from which the cillia is derived?

1.3) What is the name of the structure which anchors the cilium in the cell?

1.3) Draw a simple diagram to show the structure of a cilium.

1.3) Describe the structure of cilia and flagella.

1.3) Tabulate the three main components of the cytoskeleton describing the protein structure of each component (monomers) and give the functions.

1.3) What is a cytoskeleton and why is it said to be a dynamic structure?

1.2) a. Nucleus; b. Cytosol; c. Ribosome; d. Cytoplasm; e. Nucleolus; f. Rough ER; g. Cell membrane; h. Cell Wall; i. Smooth ER; j. Mitochondria

Consider the above list of cell structures and answer:

1. Name one structure listed above as a key word (B) that can be found in plant cells but not animal cells.
2. Which of the structures listed in B are not organelles - and why?

1.2) Which cell structure (alphabet) matches with the description of each (numbers)

1.   a gel-like substance that fills out the cell between the cell membrane

2.   contains most of the cell’s genetic material through chromatin

3.   responsible for making collagen

4.   flexible structure that surrounds every cell type.

5.   the “power centers” of the cell

6.   where ribosomes are assembled

7.   manufactures enzymes found inside the cell

8.   manufactures lipids

a. Nucleus

b. Cytosol

c. Ribosome

d. Cytoplasm

e. Nucleolus

f. Rough ER

g. Cell membrane

h. Cell Wall

i. Smooth ER

j. Mitochondria