Lecture 2 Flashcards
What is an anabolic process, give an example
When you build things, photosynthesis
What is a catabolic process, give an example
When you break things down, cellular respiration
Where is heat lost in energy flow at an animal scale
digestion and absorption, cellular respiration, biosynthesis, cellular work
What three places in the body do we store energy
liver, skeletal muscle, adipose tissue
What does the liver store and release
glycogen which can be broken down into glucose
amino acids can be broken down into carbon skeletons
what does adipose release
triglycerides –> fatty acids
Does the muscle release things into the blood
No
What does endergonic mean
chemical reaction which needs ATP
What does exergonic mean
chemical reaction that releases ATP
How can we tell that ATP is likely ancestral
Because it is the most abundant form of energy and can be used to reform other energy compounds
What is the last phosphate bond on ATP called and how stable is it in water
phosphoanhydride bond, relatively stable at physiological pH
Why do we not use other bonds that yield more energy than ATP?
Because they are less water stable
Where is most of the energy in ATP
the third phosphate
What are the components of the gibbs free energy
H = enthalpy
T = temperature
S = entropy
G = gibbs free energy
What are the laws of thermodynamics
- Energy cannot be created or destroyed
- The universe is becoming increasingly disordered
