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Chapter 9: Q. 20 (page 252)

Which type of molecule acts as a signaling molecule in yeasts?

a. steroid

b. autoinducer

c. mating factor

d. second messenger

Short Answer

Expert verified

Option c is correct

Step by step solution

01

Step 1. Given introduction

Signaling molecules or ligands are the molecules that attach with the other molecules such as receptos.

02

Step 2. Explanation for correct option

Option c is correct because the signaling molecule produced by yeasts is a mating factor. They use cell surface receptors and signaling cascades to communicate with other other yeast for mating.

03

Step 3. Explanation for incorrect option

Option a is incorrect because the steroid is not a signaling molecule-produced yeast.

Option b is incorrect because an autoinducer is not a signaling molecule produced by yeast.

Option d is incorrect because the second messenger is not a signaling molecule produced by yeast.

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Most popular questions from this chapter

What property enables the residues of the amino acids serine, threonine, and tyrosine to be phosphorylated?

a. They are polar.

b. They are non-polar.

c. They contain a hydroxyl group.

d. They occur more frequently in the amino acid sequence of signaling proteins.

Endocrine signals are transmitted more slowly than paracrine signals because ___________.

a. the ligands are transported through the bloodstream and travel greater distances

b. the target and signaling cells are close together

c. the ligands are degraded rapidly

d. the ligands don't bind to carrier proteins during transport

What is the difference between intracellular signaling and intercellular signaling?

What is the effect of an inhibitor binding an enzyme?

a. The enzyme is degraded.

b. The enzyme is activated.

c. The enzyme is inactivated.

d. The complex is transported out of the cell.

How are the effects of paracrine signaling limited to an area near the signaling cells?
See all solutions

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