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Flashcards in bio chap 10 Deck (23):
1

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

cytoskelton

2

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

microtubules,intermediate filaments, microfilaments

3

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

both ameboid crawling and the transport of organelles within a cell

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

1+2+3

5

The extracellular matrix of a plant cell is composed of:

cellulose

6

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

ground

7

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

intermediate filaments

8

Which of the following are components of the animal extracellular matrix

collagen, elastin, laminen

9

Where are the dynein arms located in a cilium

outer microtublet doublet

10

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

cell adhesion molecules are species specific

11

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

epiltheial dermal

12

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

it is slow growing

13

Myosin is a motor protein found attached to:

microfilaments

14

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

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

15

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

1+2

16

Adherens junctions, cadherins, microfilaments

desmosomes, cadherins, intermediate filaments

hemidesmoses, integrins, intermediate filaments

.

17

The extracellular matrix

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

18

Mina Bissel

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

19

Joan Caron

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

20

microtubules

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

21

microfilaments

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

22

Dyenine movement

shuffles

23

Kinesin Movement

walks