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Biochemistry > Practice questions > Flashcards

Practice questions Flashcards

1
Q

What are important of lipid absorption across the plasma membrane of intestinal cells?

A

Micelles

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2
Q

The result of lipase activity in digestion is

A

Monoacylgcerol & 2 FFAs

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3
Q

What molecule does the final carbon group use for oxidation in Stage 3 for the ultimate ATP production?

A

Acetyl CoA

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4
Q

The key enzyme that regulates the pace of glycolysis is

A

Phosphofructokinase

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5
Q

What are the two 3 C molecules generated by the split of fructose 1,6-bisphosphate?

A

Glyceraldehydes-3-phosphate & Dihydroxyacetone phosphate

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6
Q

Reversible Cleavage of F-1,6-BP to DHAP & GAP is the reaction that is catalyzed by ______

A

aldolase

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7
Q

What is the conversion of noncarbohydrate precursors to glucose?

A

Gluconeogenesis

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8
Q

The 1st step in gluconeogenesis is the carboxylation of ______ to form ________

A

Pyruvate

oxaloacetate

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9
Q

Gluconeogenesis occurs in which of the following tissue?

A

Liver

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10
Q

In the presence of oxygen, pyruvate is converted to _____ in order to enter the cycle

A

Acetyl CoA

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11
Q

A group of enzymes that convert pyruvate to Acetyl CoA are known as the _______

A

Pyruvate dehydrogenase complex

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12
Q

Pyruvate is decarboxylated by which subunit of the PDH?

A

E1

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13
Q

The purpose of phosphorylation of glucose in cytosol is to trap glucose in the cell and to convert it to a more _____ _____

A

soluble form

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14
Q

Which of the following is an electron done for biosynthesis?

A

NADPH

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15
Q

Which of the following his the activated electron carried used for fuel oxidation?

A

NADH

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16
Q

What process is regulated by Transcriptional regulation of the amount of enzyme?

A

Metabolic processes

17
Q

What process is regulated by allosteric control of enzyme activity?

A

Metabolic Processes

18
Q

What process is regulated by accessibility of substrates by compartmentalization?

A

Metabolic Processes

19
Q

Metabolic pathways that use ATP for biosynthesis processes are ______ pathways

A

Anabolic

20
Q

What is the common product from all macronutrients at stage 2 catabolism?

A

Acetyl CoA

21
Q

Bicarbonate ions are released by what organ to buffer the pH of the stomach juices?

A

Pancreas

22
Q

the release of bicarbonate ions by the pancreas is stimulated by ______

A

Secretin

23
Q

Pepsinogen requires __________ to achieve activity

A

zymogen activation

Biochemistry (10 decks)

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