March 15 Lecture Quiz

Question 1

GPCRs have _____ transmembrane a-helical segments

Answer 1

7

Question 2

Binding to to receptors in muscles or liver cells induces breakdown of ______

Answer 2

Glycogen

Question 3

True or False:

cAMP allosterically activates cAMP-dependent protein kinase A (PKA)

Answer 3

True

Question 4

______ causes constitutive activation of adenylate cyclase

Answer 4

Cholera toxin

Question 5

True or False:

All G protein signals can be terminated via desensitization of the ER to IP3

Answer 5

False

Question 6

True or False:

Insulin reaches target cells, such as liver, muscle, or fat tissue cells via lymphatic ducts

Answer 6

False

Question 7

Integrins interact with _____, ______, and _______

Answer 7

Collagen, fibrinogen, and fibronectin

Question 8

True or False:

Steroids and thyroid hormones can directly regulate transcription

Answer 8

True

Question 9

Light and odorants are detected via _______

Answer 9

GPCRs

Question 10

True or False:

CDKs are regulated by phosphorylation and proteolysis

Answer 10

True

Question 11

True or False:

Growth factors trigger transcriptional regulation of CDKs

Answer 11

True

Question 12

True or False:

Receptor tyrosine kinases activate protein kinases with auto-phosphorylation

Answer 12

True

Question 13

True or False:

Steroid hormones bind to receptors in the nucleus, altering gene expression

Answer 13

True