Nextstep 3 Biochem Flashcards

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1
Q

Phosphatase usually does? Whereas kinases?

A

Inhibits

Kinases activate

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2
Q

Electrons carriers can be?

A

Mobile and hydrophobic or immobile and water soluble.

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3
Q

During hyperventilation?

A

CO2 is lost and increased O2 happens. Loss of CO2 increases blood pH. Loss of CO2 is related to increased hemoglobin affinity for O2

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4
Q

What’s the definition of a lysogenic virus?

A

Lysogenic viruses alter nuclear DNA, but it not activated for several generations.

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5
Q

Triglycerides are composed of?

A

One glycerol molecule and three fatty acids.

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6
Q

Adenine and Guanine are?

Whereas thymine and cytosine are?

A

Purines two ring structures

Pyrimidines sing ring structures

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7
Q

Sn2 are favored by?

A

Polar aprotic solvents such as acetone or DMSO.

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8
Q

What is the kinectic energy of a photoelectron produced in the energy meter of a PAC devise when the frequency of an incident photon that is not absorbed is f=5•10^15 Hz and h= 4.1•10^-15eVs

detector work function equals to 3.4eV

A

You have to take into account the work utilized by the detector as well

5•10^15 Hz 4.1•10^-15eVs - 3.5eV = 17.1 eV

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9
Q

SN1 type of substitutions are most likely to happen when?

A

On the most stable (tertiary) carbocations.

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