Insulin has an AB heterodimer structure with intrachain  and interchain disulfide bridges  such as___

I- One intrachain disulfide bridges (A6-A11) 

II- Two interchain disulfide bridges (A7-B7 and A20-B19)

III- two intrachain disulfide bridges (A6-A11 and A20-B19) 

IV- one interchain disulfide bridges (A7-B7 )

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#Question id: 18676

#Unit 13. Methods in Biology

which of the following technique can be analysed hybridisation probes,  gene-cloning use as primers for DNA sequencing,  the polymerase chain reaction (PCR), use in site-directed mutagenesis and use as antisense therapeutics

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#Question id: 28672

#Unit 2. Cellular Organization

Which proteins is involved to inhibit Cdc25 phosphatase and hold it into inactive condition

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#Question id: 2591

#Unit 2. Cellular Organization

What kind of information can be obtained by injecting cells with fragments of heavy meromyosin (HMM) or S1 subfragments of HMM?

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#Question id: 2478

#Unit 2. Cellular Organization

At MTOCs, microtubule nucleation is facilitated by: 

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#Question id: 31018

#Unit 4. Cell Communication and Cell Signaling

Same ligand can induce different cells to respond in a variety of ways, often in a manner that coordinates the overall response of the organism. This property is known as: