Quizzes Flashcards

1
Q

In terms of energy delivery, please list the systems following from fastest to slowest

A

ATP Pool
PCr System
Glycolysis
Oxidative metabolism

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2
Q

During the hydrolysis of ATP, ATP become -

A

`ADP

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3
Q

At Best case, the human body is_____% efficient

A

25

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4
Q

of mechanical, chemical, thermal etc, which form of energy could you use to define the food we eat?

A

chemical

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5
Q

how does an enzyme help the rate of a reaction?

A

lowers the energy of activation

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6
Q

what is the gibbs free energy ^G for the hydolysis of ATP

A

-7.3 kcal/mol

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7
Q

How many kcal of energy content in 1 gram of carbs?

A

4

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8
Q

the Q10 effect relates to

A

enzyme rate in respect to temperature

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9
Q

during the transfer of energy, some will useful while some will contribute to the randomness of a system. the latter is termed?

A

entropy?

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10
Q

a reaction in which the products aid in an additional reaction is called?

A

coupled

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11
Q

During exercise, the rate of exercise will dictate the need for energy. as individuals exercise faster, they will rely more on the fast actin anaerobic systems. these systems work in order during intense exercise meaning only one system is supplying energy at one time - this statement is

A

false.

all systems work at the same time just at different rates

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12
Q

at the muscle the hydrolysis of ATP …

A

places the myosin head into a high energy state

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13
Q

both the PCR and adenylate kinase systems are extremely fast at replenishing ATP. What else do the two systems have in common?

A

both are water soluble and occur in the cytosol of the cell

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14
Q

what is the enzyme responsible for breaking down carbohydrates in the mouth?

A

AMylases

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15
Q

Excess CHO can be stored in adipose sites (fat) or as glycogen in muscle, and the

A

liver

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16
Q

The process of oxidation and reduction is essential to glycolysis. NAD+ during glycolysis is reduced (hydrogen added) to NADH. Within the process of glycolysis, pyruvate is formed. If not immediately used, pyruvate can quickly become lactate. During this process NADH is oxidised to form NAD+ thus helping to maintain the process of glycolysis. This Statement is;

A

true

17
Q

The key to the removal of lactate from a muscle is;

A

blood flow

18
Q

% of the glucose that is utilised during glycolysis comes from glycogen stores.

A

80

19
Q

Approximately… grams of glycogen is stored in the liver while approximately…… grams are stored in the muscle.

A

100

400

20
Q

The enzyme …..

is the major site of regulation for glycolysis.

A

PFK

phosphofructokinase

21
Q

If the energy charge of a cell is greater than 0.8, this indicates a greater amount of what compared to what?

A

ATP compared to ADP & AMP

22
Q

In the conversion of pyruvate to Acetyl-CoA, CO2 and what are two bi-products.

A

NADH

23
Q

A high redox state will …….. glycolysis.

A

slow down