bio chap 10

Question 1

Which of the following structures are responsible for the shape of the cell

Answer 1

cytoskelton

Question 2

Which is the correct order of cytoskelton filaments in decreasing filament diameter

Answer 2

microtubules,intermediate filaments, microfilaments

Question 3

The actin cytoskeleton is associated with which type of cell movement?

Answer 3

both ameboid crawling and the transport of organelles within a cell

Question 4

A cellular junction is : (1) the space between two cells (2) the point of contact between two cells (3) the point of contact between a cell and the extracellular matrix

Answer 4

1+2+3

Question 5

The extracellular matrix of a plant cell is composed of:

Answer 5

cellulose

Question 6

Which of the following is NOT a type of tissue found in an animal

Answer 6

ground

Question 7

Which of the cytoskeleton filaments is associated with providing the cell with mechanical strength?

Answer 7

intermediate filaments

Question 8

Which of the following are components of the animal extracellular matrix

Answer 8

collagen, elastin, laminen

Question 9

Where are the dynein arms located in a cilium

Answer 9

outer microtublet doublet

Question 10

the classic experiment using isolated cells from 2 species of sponges provided evidence that:

Answer 10

cell adhesion molecules are species specific

Question 11

Your skin is made up of cells that are most similar to the tissue cells in a plant

Answer 11

epiltheial dermal

Question 12

What is the best characterization of the minus end of a dynamic filament?

Answer 12

it is slow growing

Question 13

Myosin is a motor protein found attached to:

Answer 13

microfilaments

Question 14

What is the advantages of forcing materials to travel through cells instead of between cells

Answer 14

• *cells can control which materials are transported
• *exposure to toxins is limited
• *exposure to bacteria or viruses is limited
• *ALL CHOICES ARE CORRECT

Question 15

The extracellular matrix is composed of: (1) proteins (2)polysaccharides (#) nucleic acids

Answer 15

1+2

Question 16

Adherens junctions, cadherins, microfilaments

desmosomes, cadherins, intermediate filaments

hemidesmoses, integrins, intermediate filaments

Answer 16

.

Question 17

The extracellular matrix

Answer 17

provides the molecular framework that ultimately determines the structural architecture of plants and animals.

**composed of proteins and polysaccharides

**IN PLANTS ECM IS PLANT WALL.
$$$$ In animals present in most tissues and is especially abundant in connective tissue, where it provides support and protection

Question 18

Mina Bissel

Answer 18

discovered that mammary cells expressed and secreted high levels of the milk protein B-casein when grown in a 3-D collagen matrix, but not in 2-D matrix

Question 19

Joan Caron

Answer 19

hypothesized that a specific protein in the extracellular matrix is necessary for the expression of the protein albumin from hepatocytes grown in culture. Albumin is a major product of liver cells

Question 20

microtubules

Answer 20

provide structural support and maintain cytoplasmic organization. They are hollow polymers of tubulin dimers

Question 21

microfilaments

Answer 21

provide structural support necessary to maintain the shape of a cell. Polymers of actin monomers

Question 22

Dyenine movement

Answer 22

shuffles

Question 23

Kinesin Movement

Answer 23

walks