Which of these is not a carcinogen?Which of these is not a carcinogen?

A. Tobacco smoke

B. Testosterone

C. UV light

D. Fat

E. All of the over are carcinogens


_____ is a carcinogen the promotes colon cancer._____ is a carcinogen that promotes colon cancer.

You are watching: Calcium ions that act as second messengers are stored in

A. Fat

B. UV light

C. Estrogen

D. A virus

E. Testosterone


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Which of this is responsible because that initiating a signal transduction pathway?

A. A

B. B

C. C

D. D

E. E


What duty does a transcription aspect play in a signal transduction pathway?

A. By binding to a plasma membrane receptor the initiates a cascade.

B. It relays a signal native the cytoplasm come the plasma membrane.

C. The activates relay proteins.

D. Through binding to DNA it triggers the warrior of a particular gene.

E. The is a plasma membrane protein that binding signal molecules.


A signal transduction pathway is initiated once a _____ binds to a receptor.

A. G protein

B. Tyrosine kinase

C. Calmodulin

D. Signal molecule

E. Cyclic AMP


Which of this acts as a 2nd messenger?

A. G-protein-linked receptor

B. Cyclic AMP

C. G protein

D. Protein kinase

E. Adenylyl kinase


Calcium ion that act as second messengers space stored in _____.

A. Absorbent reticula

B. Peroxisomes

C. Lysosomes

D. Chloroplasts

E. Mitochondria


_____ catalyzes the manufacturing of _____, i beg your pardon then opens an ion channel the releases _____ right into the cell"s cytoplasm.

A. Phospholipase C ... IP3 .... Ca2+

B. Adenylyl cyclase ... IP3 .... Ca2+

C. Protein kinase ... PIP2 ... Na+

D. Adenylyl cyclase ... Cyclic AMP ... Ca2+

E. Phospholipase C ... Cyclic AMP ... Ca2+


A protein kinase activating numerous other protein kinases is an example of _____.

A. Sensitization

B. Deactivation

C. Amplification

D. A moving response

E. Mutualism


The cleavage the glycogen by glycogen phosphorylase publication _____.

A. Cellulose

B. Fructose-1-phosphate

C. Glucose-1-phosphate

D. Galactose-1-phosphate

E. Nothing: glycogen phosphorylase cannot cleave glycogen


Epinephrine acts as a signal molecule the attaches to _____ proteins.

A. Atom receptor

B. Ion-channel receptor

C. Intracellular receptor

D. G-protein-linked receptor

E. Receptor tyrosine kinase


Which of this is a receptor because that calcium ions?

A. G protein

B. PIP2

C. Adenylyl cyclase

D. Calmodulin

E. IP3


Which of these is no correct?

A. Ion networks are discovered on both the plasma membrane and the absorbent reticulum.

B. Tyrosine-kinase receptors consist of two polypeptides that join when activated by a signal molecule.

C. Kinases room enzymes that phosphorylate other molecules.

D. Phospholipase C catalyzes the formation of IP3.

E. Cyclic AMP binding to calmodulin.


A toxin that inhibits the manufacturing of GTP would interfere with the duty of a signal transduction pathway that is initiated by the binding the a signal molecule come _____ receptors.

A. G-protein-linked

B. Steroid

C. Intracellular

D. Ion-channel

E. Receptor tyrosine kinase


Which of these is a reasonable signal transduction pathway?

A. An intracellular receptor activates phospholipase C, i m sorry cleaves a membrane protein to kind IP3, which climate activates the opened of an age channel protein, i beg your pardon releases cyclic AMP into the cytoplasm, whereby it binding to one intracellular enzyme the carries the end a response.

B. A receptor tyrosine kinase activates adenylyl cyclase, i m sorry activates phospholipase C, which converts ATP into cyclic AMP, which binds to one intracellular enzyme the carries out a response.

C. A G-protein-linked receptor activates G protein, i beg your pardon activates phospholipase C, i m sorry cleaves a membrane lipid to form IP3, which binds to a calcium channel top top the ER, which opens to relax calcium ions into the cytoplasm, which bind to an intracellular enzyme that carries the end a response.

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D. An ion-channel receptor opens, permitting a steroid hormone to enter the cell; the steroid hormone climate activates protein kinases that convert GTP come GDP, which binds to an intracellular enzyme that carries the end a response.