Lecture 2 Bioenergetics Flashcards

1
Q

Tricarboxylic Acid cycle is also known as:

A

Krebs Cycle

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2
Q

Importance of Krebs Cycle

A

Final Common metabolic pathway for oxidation of carbohydrates , fats , proteins ( amino acids )

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3
Q

Where does Krebs cycle happen in the cell?

A

Mitochondria

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4
Q

How much energy does Krebs cycle produce in ATPs?

A

10 ATP

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5
Q

Where does carbohydrates mainly get digested? mention 3 places

A

Mouth, Stomach and small intestine

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6
Q

What happens to starch in mouth?

A

Starch is hydrolysis by salivary amylase to dextrin and maltose

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7
Q

What happens to carbohydrates in stomach?

A

HCL hydrolyzes carbohydrates partially to monosaccharides.

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8
Q

Glucose in small intestine

A

Digestion is completed and absorption to blood

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9
Q

Where does glucose go to first after absorption?

A

Liver

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10
Q

Glucose undergoes…. For energy production ( oxidation or reduction )

A

Oxidation

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11
Q

Process in which glucose is broken down to produce energy ( Major pathway )

A

Glycolysis

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12
Q

Second use of absorbed Glucose

A

synthesis of other carbohydrates as galactose in lactose of milk, and ribose and deoxyribose for synthesis of nucleotides and nucleic acid.

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13
Q

use of deoxyribose

A

synthesis of nucleotides and nucleic acid.

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14
Q

Where does glycolysis happen in the cell?

A

Cytosol

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15
Q

sequence of enzymatic reactions in which one molecule of glucose is converted into either pyruvate in the presence of oxygen or lactate in the absence of oxygen.

A

Glycolysis

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16
Q

product of glycolysis in presence of oxygen

A

pyruvate

17
Q

product of glycolysis in absence of oxygen

A

Lactate

18
Q

Energy product of glycolysis in presence of oxygen in ATPs

A

7 ATP

19
Q

Energy product of glycolysis in absence of oxygen in ATPs

A

2 ATP

20
Q

Importance of glycolysis

A
  1. Energy production ( 7 ATP under aerobic conditions or 2 ATP under anaerobic conditions )
  2. In RBCs it is the only source of ATP.