energy and cellular metabolism Flashcards
1
Q
reduction
A
gain of e-
loss of h+
2
Q
oxidation
A
loss of e-
gain of h+
3
Q
phototrophs
A
energy from sunlight
4
Q
autotrophs
A
energy from own stores
5
Q
chemotrophs
A
energy from chemical reactions
6
Q
heterotrophs
A
energy from different sources
7
Q
metabolism
A
biochemical modification of chemical compounds in living cells and organisms
8
Q
catabolic pathways
A
reactions that break things down degradative energy producing oxidative generates ATP generates NADH
9
Q
anabolic pathways
A
reactions that build things up biosynthetic energy consuming reductive uses ATP and NADH
10
Q
exogonic reaction
A
negative/decrease in gibbs free energy
11
Q
exergonic reaction
A
positive/increase in gibbs free energy
12
Q
why do exergonic reactions happen?
A
temp increase
substrate conc. increase
13
Q
why is ATP so good?
A
easily hydrolysed
forces of repulsion help it break down easier
phosphoanhydride bonds easily hydrolysed
14
Q
reductant
A
substance that donates electrons
15
Q
oxidant
A
substance that accepts electrons
