Which of the following is capable of existing as a pair of enantiomers?

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#Question id: 1268

#Unit 4. Cell Communication and Cell Signaling

The collagen triple-helix domain

a. is rich in glycine.                             b. is rich in proline.

c. is rich in hydroxyproline.                d. is an alpha helix.

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#Question id: 23159

#Unit 13. Methods in Biology

Rhodamine is a fluorescent dye which emits a colour?

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#Question id: 11647

#Unit 7. System Physiology – Animal

After menopause, hormone replacement therapy with estrogen-like compounds is effective in preventing the progression of osteoporosis. What is the mechanism of their protective effect?

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#Question id: 4935

#Unit 11. Evolution and Behavior

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

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#Question id: 1272

#Unit 4. Cell Communication and Cell Signaling

Collagen is exported from the endoplasmic reticulum as