first 5
Define metabolism.
Metabolism is the combination of all anabolic and catabolic processes in the body
The compound that enters the Krebs cycle is
acetyl CoA
Where does glucose breakdown occur?
CYTOSOL
Nitrogen is disposed of during this cycle
UREA CYCLE
Electron transport occurs in the
MITOCHONDRIAL MEMBRANE
List three characteristics of anabolism and catabolism.
Anabolism Catabolism
Builds up a. Breaks down
Forms bonds b. Breaks bonds
Requires energy c. releases energy
T or F. Fatty acids, amino acids, and glucose may become acetyl CoA.
TRUE
What is the only source of fuel for red blood cells?
GLUCOSE
Too much anaerobic metabolism leads to _______ build up.
LACTIC ACID
Glucose cannot be made from
FATTY ACIDS
Catabolic pathways in the body produce:
CO2
H2O
ATP
Does ATP contain high or low energy phosphate bonds?
HIGH
How many carbons enter the Krebs Cycle? and how much CO2 is released?
2;2
Where does anaerobic metabolism (of glucose) occur?
CYTOSOL (cytoplasm)
What are the main three components of energy expenditure?
Basal metabolism, physical activity, thermic effect of food
the sequence of how energy is generated from food.
1. Digestion, absorption, transport
2. Catabolism to acetyl CoA
3. Kreb’s cycle
4. Electron transport chain
Is ATP produced using catabolic or anabolic pathways?
CATABOLIC
___ is utilized (consumed) in the electron transport chain, and ___ is the by-product.
O2 & H20
A high level of urea in the urine signifies ________
Lots of amino acid catabolism.
Which component usually accounts for the most energy expenditure?
BASAL METABOLISM
The Krebs Cycle occurs here
mitochondria
Anabolic pathways require or release energy?
REQUIRE
Complete Fat Breakdown requires a lot of
OXYGEN
The Krebs Cycle is stimulated by
INSULIN
List SOME factors that affect Basal Metabolic Rate.
Age, body composition, gender, body condition, illness, malnutrition, pregnancy, environmental temperature, genetics