(BIO TEXTBOOK EXCLUSIVE/BTE) C1.1 Enzymes and catabolism + Cell Resp SL Flashcards

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1
Q

DEFINE CATALYSTS

A

Speed up chemical reactions / increase the rate of chemical reaction
- goo SPEEEEDDD

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2
Q

Why is there no 1:1 ratio of reactants/substrates to catalysts/enzymes?

A

Because catalysts can be reused

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3
Q

What is the general equation for an enzyme-catalysed reaction?

A

Substrates - enzyme -> products

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4
Q

Why are enzymes important:

A

All life processes would be slow at ambient/mormal temps

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5
Q

Define metabolic pathway

A

One molecule transformed into another by steps

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6
Q

Outline the importance of enzymes in metabolism

A
  • almost all reactions catalyzed by enzymes
  • all bodily processes too slow in ambient temp
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7
Q

Why is the lock and key model flawed?

A

The size and bond of the enzyme and substrate change due to chemical reaction
- so the active site shape must change along w/ the enzyme’s shape

because if the substrate shapes change in shape -> whatever is attached to it should also change in shape

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8
Q

“Outline” the induced fit model [4]

A

1.) random collisions
2.) binding, substrate shape and active site shape altered
3.) if another substrate joins, the active site changes shape
4.) products detach, active site to resume original shape

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9
Q

Why is ATP stable at neutral pH levels?

A

The pH level of the cytoplasm

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10
Q

Give the chemical equation of ATP in hydrolysis and condensation

A
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11
Q

Outline the life processes within cells that ATP supplies with energy.

A

1.) Synthesizing macromolecules
- e.g. the central dogma
2.) Active transport
- pumps, voltage gate
3.) Movement
- locomotion for example, or organelle mvmt

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12
Q

Where does the energy to convert ADP -> ATP come from?

A

via oxidation
- cell respiration (biomolecules except nucleic acid)
- photosynthesis ( light -> chem energy)
- chemosynthesis (oxidizing inorganic substances -> energy released)

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13
Q

Explain the relationship of gas exchange and cell respiration

A
  • w/o gas exchange: cell respiration could not continue because there would soon be a lack of oxygen + HARMFUL excess of carbon dioxide
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14
Q

Give the word equations for the different types of respiration

A
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15
Q

compare and contrast aerobic and anaerobic cell respiration

A
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