Chapter 11 - Section 1

Question 1

What are external signals converted to?

Answer 1

Responses within the cell

Question 2

How many mating types does yeast have

Answer 2

Two mating types A and a

Question 3

How do different mating types locate each other?

Answer 3

Through secreted factors specific to each type.

Question 4

Signal Transduction Pathway

Answer 4

A series of steps by which a signal on a cells surface is converted into a specific cellular response.

Question 5

Quorum Sensing

Answer 5

The concentration of signaling molecules gives them the ability to sense local population density.

Question 6

Chemical messengers

Answer 6

Gives cells in a multi-cellular organism the ability to communicate

Question 7

Cell Junctions

Answer 7

These connect the cytoplasm of adjacent cells in animal and plant cells.

Question 8

What are the two ways that animal cells can communicate in local signaling

Answer 8

Direct connections or cell-cell recognition

Question 9

Local regulators

Answer 9

Messenger molecules that travel only short distances

Question 10

In long distance signaling, what do plants and animals use

Answer 10

A chemical called a hormone

Question 11

What did Sutherland say about epinephrine and its process of acting on cells?

Answer 11

• Reception
• Transduction
• Response