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WorksheetsEXER 315 Exercise Physiology Exam 2
Total questions: 21
Worksheet time: 11mins
Which of these substrate stores in the body can provide the most overall kilocalories?
glycogen
protiens
triglycerides
glucose
Protein can serve as an energy substrate if
certain amino acids are present
it is utilized by the brain
it is phosphorylated first
it is first converted to glucose
Which of the following is responsible for lowering the activation energy of a chemical reaction?
ATP
additional buildup of substrate
enzyme activity
ADP accumulation
The anaerobic glycolytic system would be the primary source of ATP for which running event?
100 m
800 m (1/2 mile)
3,200 m (2 miles)
marathon
Taking into account both oxygen requirements and ATP yield, which substrate is more efficient, fat or glucose?
Fat is more efficient
Glucose is more efficient
They are equally efficient
An athlete with a high percentage of type II fibers would exhibit which characteristics?
more mitochondria, higher oxidative enzymes
more mitochondria, lower oxidative enzymes
fewer mitochondria, higher oxidative enzymes
fewer mitochondria, lower oxidative enzymes
The body utilizes ___________ oxygen when metabolizing carbohydrate compared to fat.
much more
somewhat more
the same amount
less
As RER values approach 1.0,
the body is at rest
exertion levels are moderate
glucose/glycogen metabolism is maximal
glycogen is depleted and metabolism is mostly of fat
Which of the following is not an important predictor of a successful endurance athlete?
high lactate threshold
high type II fiber percentage
high VO2 max
high economy of effort
ATP production from fat is ____________ ATP production from glucose.
Slower than
Faster than
the same as
less than
Which of these sets of factors determines the rate of ATP production?
substrate availability, enzyme activity
amino acid concentration, triglyceride storage
enzyme concentration, metabolic rate
activation energy requirement, glycerol concentration
Free fatty acids can only be used to produce ATP via aerobic metabolic pathways.
True
False
Which metabolic process is shown in the image above?
ATP-PCr
Krebbs Cycle
Glycolysis
lipogenesis
Why does aerobic performance continue to improve with training after VO2 max has plateaued?
VO2 drift continues to increase
EPOC continues to increase
VCO2 continues to decrease
Lactate threshold continues to increase
Women typically have a lower BMR due to lower fat free mass and higher percent body fat.
True
False
A Respiratory Exchange Ratio (RER) of 1.0 would indicate
100% kcal from Carbs
100% kcal from Fats
50/50 mix carbs and fats
In simple terms, VO2 is equal to
O2 inspired minus O2 expired
O2 inspired minus CO2 inspired
CO2 inspired minus O2 expired
CO2 inspired minus CO2 expired
Insulin resistance would be an example of hormonal
upregulation
downregulation
gene activation
second messenger
_________ hormones have a structure that allows them to pass through the cell membrane.
nonsteroid
steroid
target cell
second messenger
Growth hormone is produced in the
Thyroid
Pancreas
Testes
Anterior Pituitary
How many hours are you planning to study for this exam?
1 hour or less
2-3 hours
3-4 hours
> 4 hours
