Chapter 14 Lecture Flashcards
1
Q
anabolism
A
the biosynthesis of LARGER CMPDS FROM SMALLER CMPDS.
- typically REDUCTIVE (addition of electrons)
- ENERGY REQUIRED
2
Q
catabolism
A
- LARGER CMPDS. BROKEN DOWN into SMALLER CMPDS.
- energy RELEASED
- OXIDATIVE (release of electrons)
3
Q
linear
A
- a CONTINUOUS LINE of SERIES of RXNS
- PRODUCT of one reaction is REACTANT in other
ex. glycolysis
4
Q
circular
A
- series of rxns. where FINAL PRODUCT is the INITIAL REACTANT
ex. Krebs cycle
5
Q
spiral
A
- series of REPEATED REACTIONS used to BREAK or MAKE a MOLECULE
ex. fatty acids degradation
6
Q
spontaneous or favorable reaction
A
- CONTINUES ITSELF ONCE STARTED
- energy is RELEASED (-deltaG)
7
Q
nonspontaneous or unfavorable reaction
A
- WILL NOT TAKE PLACE UNLESS IT IS COUPLED !!
- with a SPONTANEOUS OR FAVORABLE RXN.
8
Q
coupled reaction
A
paired nonspon. + spon. rxn
9
Q
in a coupled rxn…?
A
- spontaneous rxn PROVIDES ENERGY NEEDED by a nonspontaneous or favorable one
ex. forming ATP (+deltaG)
10
Q
catabolism and anabolism linked through?
A
- through ATP and HYDROLYSIS
11
Q
in ATP:
A
- the energy is then STORED into a PHOSPHODIESTER BOND - HIGH ENERGY BOND
12
Q
catabolism always begins with?
A
digestion
13
Q
starch digestion
A
- begins within the MOUTH
- starch amylase CATALYZES the HYDROLYSIS of alpha (1-4) GLYCOSIDIC BONDS
- other remaining starch is broken in the SMALL INTEST.
14
Q
triglyceride digestion
A
- needs the EMULSFICATION OF TRIGLYCERIDES by BILE SALTS
- often broken down in the SMALL INTEST.
- FATTY ACIDS are RELEASED
15
Q
protein digestion
A
- begins in the STOMACH
- the enzyme PEPSIN CATALYZES HYDROLYSIS of PEPTIDE BONDS
- SMALL INTEST- rest of peptide bonds
- AMINO ACIDS RELEASED, then absorbed into blood
