ATP

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  • Created by: portia
  • Created on: 14-04-17 11:50
What is the Structure of ATP?
It is a nucleotide compose of adenine (a nitrogenous base), ribose (pentose sugar found in RNA) and 3 phosphate groups
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ATP is a phophorylated nucleotide. Define Phosphorylation
The process of adding an inorganic phosphate to a coumpound
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Name 2 ways in which phosphorylation can occur leading to ATP production
1. Substrate-level phosphorylation (ATP synthesis relies on breaking down substrate with enzymes) and 2. Oxidative Phosphorylation (ATP synthesis relies on the transport of electrons, through a membrane)
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Differentiate adenosine from adenine
Adenosine is adenine (nitrogenous base) combined with a ribose sugar
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Why is ATP unstable?
ATP is an unstable molecule which hydrolyses to ADP and an in organic phosphate when it is in equilibrium with water. The high energy of this molecule comes from the two high-energy phosphate bonds. The bonds between phosphate groups are energy-rich
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What is energy currency vs energy storage?
Many molecules store energy but this energy must be converted into ATP before it is available to be used by cells. ATP is primary term for energy currency of the cell for the short term. Sugars & fats R more stable & R thus bette for longerT storage
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Why is ATP considered as the energy currency molecule of the cell?
1.It is small and soluble (easy and fast to transport), 2. Easily hydrolyzed (molecule is unstable), 3. High energy released (30.6kJ considerably high for its size), 4. Rapid turnover, 5. Used by most cell types
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Describe the Universal role of ATP as the energy currency in all living organisims
It exists for a Short term. Easily made/hydrolyzed. Releases a sufficient amount of energy for the cell to do work. Unstable and Very reactive.
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Why can ATP deliver energy to cells?
Energy stored in ATP comes from the energy released by food (glucose) when it is broken down during respiration. This energy is quickly trapped within the phosphate bonds in ATP, where upon hydrolysis, this energy can be released to cells.
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What is the main idea behind cellular respiration combining energy and electrons?
Energy found in the electrons from the food we eat can be transferred through a series of redox reactions to eventually be used to join ADP + Pi yielding ATP. This electron transport occurs in the membrane system of the inner mitochondrion, cristae.
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Other cards in this set

Card 2

Front

ATP is a phophorylated nucleotide. Define Phosphorylation

Back

The process of adding an inorganic phosphate to a coumpound

Card 3

Front

Name 2 ways in which phosphorylation can occur leading to ATP production

Back

Preview of the front of card 3

Card 4

Front

Differentiate adenosine from adenine

Back

Preview of the front of card 4

Card 5

Front

Why is ATP unstable?

Back

Preview of the front of card 5
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