A process in which a suspension of microbes is quickly frozen at temperatures ranging from - 54°C to -72°C, and the water is removed by a high vacuum (sublimation) 

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#Question id: 1084

#XL - Q Biochemistry

Which observation suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells?

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#Question id: 1085

#XL - Q Biochemistry

Which of the following statements about a G protein signaling pathway is true?

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#Question id: 1086

#XL - Q Biochemistry

What is the most likely mechanism by which testosterone functions inside a cell?

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#Question id: 1088

#XL - Q Biochemistry

One of the major categories of receptors in the plasma membrane functions by forming dimers, adding phosphate groups, and then activating relay proteins. Which type does this?

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#Question id: 1089

#XL - Q Biochemistry

Which of the following statements describes a likely effect of a drug designed that inhibits the cellular response to testosterone?

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#Question id: 1090

#XL - Q Biochemistry

Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?