Ch 20

Front 1

Both multicellular plants and animals have _____________________.

Back 1

tissues composed of multiple different cell types.

Hint 1

(a) cells capable of locomotion.

(b) cells with cell walls.

(c) a cytoskeleton composed of actin filaments, microtubules, and intermediate

filaments.

(d) tissues composed of multiple different cell types.

Front 2

Which of the following statements about plant cell walls is true?

Back 2

(a) The microtubule cytoskeleton directs the orientation in which cellulose is deposited in the cell wall.

Hint 2

(a) The microtubule cytoskeleton directs the orientation in which cellulose is deposited in the cell wall.
(b) The molecular components of the cell wall are the same in all plant tissues.
(c) Because plant cell walls are rigid, they are not deposited until the cell has stopped growing.
(d) The cellulose found in cell walls is produced as a precursor molecule in the cell and delivered to the extracellular space by exocytosis.

Front 3

Which of the following statements about plant cell walls is true?

Back 3

(a) The microtubule cytoskeleton directs the orientation in which cellulose is deposited in the cell wall.

Hint 3

(a) The microtubule cytoskeleton directs the orientation in which cellulose is deposited in the cell wall.
(b) The molecular components of the cell wall are the same in all plant tissues.
(c) Because plant cell walls are rigid, they are not deposited until the cell has stopped growing.
(d) The cellulose found in cell walls is produced as a precursor molecule in the cell and delivered to the extracellular space by exocytosis.

Front 4

Which of the following molecules is not found in plants?

Back 4

c. collagen

Hint 4

(a) cellulose
(b) lignin
(c) collagen
(d) pectin

Front 5

Which of the following statements about cellulose is false?

Back 5

(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Hint 5

(a) Cellulose synthase enzyme complexes are integral membrane proteins.
(b) An array of microtubules guides the cellulose synthase complex as it moves in the membrane.
(c) The sugar monomers necessary for the synthesis of a cellulose polymer are transported across the plasma membrane.
(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Front 6

Which of the following molecules is not found in plants?

Back 6

c. collagen

Hint 6

(a) cellulose
(b) lignin
(c) collagen
(d) pectin

Front 7

Which of the following statements about cellulose is false?

Back 7

(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Hint 7

(a) Cellulose synthase enzyme complexes are integral membrane proteins.
(b) An array of microtubules guides the cellulose synthase complex as it moves in the membrane.
(c) The sugar monomers necessary for the synthesis of a cellulose polymer are transported across the plasma membrane.
(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Front 8

20-8 Which of the following is not an example of a connective tissue?

Back 8

(b) the layer of photoreceptors in the eye

Hint 8

(a) bone
(b) the layer of photoreceptors in the eye
(c) the jellylike interior of an eye
(d) cartilage

Front 9

Which of the following molecules is not found in plants?

Back 9

c. collagen

Hint 9

(a) cellulose
(b) lignin
(c) collagen
(d) pectin

Front 10

Which of the following statements about cellulose is false?

Back 10

(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Hint 10

(a) Cellulose synthase enzyme complexes are integral membrane proteins.
(b) An array of microtubules guides the cellulose synthase complex as it moves in the membrane.
(c) The sugar monomers necessary for the synthesis of a cellulose polymer are transported across the plasma membrane.
(d) Microtubules are directly attached to the outside surface of the plasma membrane to form tracks that help orient the cellulose polymers.

Front 11

20-8 Which of the following is not an example of a connective tissue?

Back 11

(b) the layer of photoreceptors in the eye

Hint 11

(a) bone
(b) the layer of photoreceptors in the eye
(c) the jellylike interior of an eye
(d) cartilage

Front 12

Which of the following statements about animal connective tissues is true?

Back 12

(d) Proteoglycans can resist compression in the extracellular matrix.

Hint 12

(a) Enzymes embedded in the plasma membrane synthesize the collagen in the extracellular matrix extracellularly.
(b) In connective tissue, the intermediate filaments within the cells are important for carrying the mechanical load.
(c) Cells can attach to a collagen matrix by using fibronectin, an integral membrane protein.
(d) Proteoglycans can resist compression in the extracellular matrix.