Which Of These Is A Receptor Molecule Mastering Biology

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Which of these is NOT a carcinogen?Which of these is NOT a carcinogen?

A. Cigarette smoke

B. Testosterone

C. UV light

D. Fat

E. All of the over are carcinogens


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

You watching: Which of these is a receptor molecule mastering biology

A. Fat

B. UV light

C. Estrogen

D. A virus

E. Testosterone


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Which of these acts as a second messenger?

A. B

B. A

C. C

D. D

E. E


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Which of these is responsible for initiating a signal transduction pathway?

A. A

B. B

C. C

D. D

E. E


What role does a transcription variable play in a signal transduction pathway?

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

B. It relays a signal from the cytoplasm to the plasma membrane.

C. It activates relay proteins.

D. By binding to DNA it triggers the transcription of a specific gene.

E. It is a plasma membrane protein that binds signal molecules.


A signal transduction pathmethod is initiated as soon as a _____ binds to a receptor.

A. G protein

B. Tyrosine kinase

C. Calmodulin

D. Signal molecule

E. Cyclic AMP


Which of these acts as a 2nd messenger?

A. G-protein-connected receptor

B. Cyclic AMP

C. G protein

D. Protein kinase

E. Adenylyl kinase


Calcium ions that act as second messengers are stored in _____.

A. Endoplasmic reticula

B. Peroxisomes

C. Lysosomes

D. Chloroplasts

E. Mitochondria


_____ catalyzes the production of _____, which then opens up an ion channel that 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 many other protein kinases is an instance of _____.

A. Sensitization

B. Deactivation

C. Amplification

D. A cellular response

E. Mutualism


The cleavage of glycogen by glycogen phosphorylase releases _____.

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 that attaches to _____ proteins.

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A. Nuclear receptor

B. Ion-channel receptor

C. Intracellular receptor

D. G-protein-connected receptor

E. Receptor tyrosine kinase


Which of these is a receptor for calcium ions?

A. G protein

B. PIP2

C. Adenylyl cyclase

D. Calmodulin

E. IP3


Which of these is NOT correct?

A. Ion networks are uncovered on both the plasma membrane and also the endoplasmic reticulum.

B. Tyrosine-kinase receptors consist of 2 polypeptides that join as soon as activated by a signal molecule.

C. Kinases are enzymes that phosphorylate various other molecules.

D. Phospholipase C catalyzes the development of IP3.

E. Cyclic AMP binds to calmodulin.


A toxin that inhibits the production of GTP would interfere via the feature of a signal transduction pathmethod that is initiated by the binding of a signal molecule to _____ receptors.

A. G-protein-linked

B. Steroid

C. Intracellular

D. Ion-channel

E. Receptor tyrosine kinase


Which of these is a logical signal transduction pathway?

A. An intracellular receptor activates phospholipase C, which cleaves a membrane protein to develop IP3, which then activates the opening of an ER channel protein, which releases cyclic AMP right into the cytoplasm, wbelow it binds to an intracellular enzyme that carries out an answer.

B. A receptor tyrosine kinase activates adenylyl cyclase, which activates phospholipase C, which converts ATP right into cyclic AMP, which binds to an intracellular enzyme that carries out a solution.

C. A G-protein-attached receptor activates G protein, which activates phospholipase C, which cleaves a membrane lipid to develop IP3, which binds to a calcium channel on the ER, which opens to release calcium ions right into the cytoplasm, which bind to an intracellular enzyme that carries out a solution.

D. An ion-channel receptor opens up, enabling a steroid hormone to enter the cell; the steroid hormone then activates protein kinases that transform GTP to GDP, which binds to an intracellular enzyme that carries out an answer.


C. A G-protein-linked receptor activates G protein, which activates phospholipase C, which cleaves a membrane lipid to create IP3, which binds to a calcium channel on the ER, which opens to release calcium ions right into the cytoplasm, which bind to an intracellular enzyme that carries out a solution.