Interaction & Interdependence C.4 Chemical Signaling - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?IB生物学?Interaction & Interdependence C.4 Chemical Signaling

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习题练习：Interaction & Interdependence C.4 Chemical Signaling

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The diagram represents the regulation of glycogen metabolism by 35 8*kuldyhicigt04 xthe epinephrine re* d t45iklgcy ih08x3uceptors. What occurs after cyclic AMP (cAMP) is formed?

A. Acts on ATP

B. Binds to G protein-coupled receptor

C. Activates G protein

D. Binds to an inactive protein kinase (PKA)

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Which of these is not an effec dd-.))6n vlepdbu00kw/yuw jt of testosterone?

A. Development of testes

B. Development of embryonic gonads into testes

C. Sperm production

D. Development of secondary male characteristics

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

A signalling chemical is needed to activate the G 9 *pu m83pnn b*-rjqsq:hi3snprotein by binding to the G protein-coupled receptor. What other substancenrh9nb3* s*sq i-qujp3 n8mp: is needed to activate the G protein?

A. GTP

B. cAMP

C. GDP

D. ATP

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Which of the following is an example of a positive fee4qb cc;e6j p.adback mechanism?

A. Control of blood glucose concentration

B. Maintenance of body temperature in a homeotherm

C. Absorption of more water from the collecting duct as a result of ADH secretion

D. Increase of oxytocin bringing about further uterine contractions.

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Which labels represent po+wv(al zr 1v)msitive and negative feedback?

A. I /IV

B. IV /II

C. II /III

D. II /IV

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Which of the following is only able to trigger a response in a cell by bl htry+ ,i2zg,inding to a receptor in the plasma memhiz r ylg+,,t2brane?

A. Insulin

B. Testosterone

C. Oestradiol

D. Progesterone

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Which of the following is true for hormones but not neurotransmitters?

A. They are signalling chemicals found in animals

B. They act on distant target cells

C. They are transmitted across a synaptic gap

D. They result in a short-term effect

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which features describe the transmembrane w dxb13kp26eg 4eo7anreceptor and intracellular receptor?

A. Signalling chemical enters the cell and binds in the nucleus /Signalling chemical remains outside of the cell and binds with the receptor

B. Located in the cytoplasm /Located in the cell membrane

C. Transmembrane domain contains hydrophobic amino acids and extracellular domain contains hydrophilic amino acids /Domain contains hydrophobic amino acids

D. An example is G protein-coupled receptor /An example is the tyrosine kinase receptor

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which feature correctly describes the binding of a ligand to a receptor (o(ow kr2u2pas61had?

A. Receptors can bind to any ligand.

B. Both the ligand and receptor must have a complementary shape.

C. All ligands can penetrate the cell to bind with intracellular receptors.

D. All ligands bind irreversibly to receptors.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The diagram shows a fll 5 ,ssv(g(7enuyvb m2ow chart.

Which is the correct sequence of reactions shown in the flow chart?

A. B. C. D.

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11#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

1.Compare and contrast transmembrane receptors and intracellular recepyelbq8gd :w,3vz*b wz*, iy,etors.
2.Outline the variety of signalling chemicals in animals.
3.Describe the mechanisms by which both transmembrane and intracellular receptors can bring about a cellular response, using one named hormone for each type of receptor.

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