bio 122 metabolism quiz
Ketone bodies can result from excess production of:
acetyl coA
Which of the following does not release hydrogens that are used to make ATP in electron transport?
all of these release hydrogen for use electron transport
The minimum resting energy expenditure of an awake, alert person is called
basal metabolic rate.
Which of the following is the first step in ATP production from fat?
beta-oxidation
It's been 5 hours since you had breakfast and now you're thinking about trying the new Mexican lunch place that just opened up across the street. The more you think about it, the hungrier you get. That's the result of the ________ that your empty stomach is releasing into your bloodstream.
ghrelin
A high uric acid level (above 7.4 mg/dl) can lead to the painful condition known as
gout
Which part of glucose metabolism yields the greater amount of ATP?
electron transport system
Glycolysis
end product is pyruvic acid
Which of these is a hormone that causes an increase in blood glucose concentration?
epinephrine
Linoleic acid and linolenic acid are examples of
essential fatty acids
There are ________ essential amino acids that the body either cannot synthesize or that cannot be produced in amounts sufficient for growing children.
10
electron transport
28 atp produced
During cellular respiration, how much of the original energy in the glucose molecule is transferred into ATP and how much is instead converted into (lost as) heat?
40 % atp 60% heat
In which of the following conditions does the hypothalamus fail to function?
heat stroke
Which of the following carry excess cholesterol from peripheral tissues to the liver?
high density lipoprotiens (HDL)
The energy content of foods is commonly given in units of
kilocalories
The hormone ________, which suppresses appetite and stimulates satiety, is released by adipose tissue.
leptin
All of the following occur during the postabsorptive state except that
levels of blood glucose are elevated
During starvation (a long-term situation):
little or no glycogen is store in the liver
Urea is formed in the
liver
beta oxidation
pathway for fatty acid breakdown
When the body is relying on internal energy reserves to continue meeting its energy demands, it is in the ________ state.
post-absorptive
A person with untreated diabetes mellitus would be in a prolonged:
post-absorptive state
Resting energy expenditure is most directly determined by monitoring
respiration
The increase in body temperature during exercise:
results from a greatly increased metabolism
Cytochromes
site of oxidation/reduction reactions in electron transport
citric acid cycle
starting material is acetyl CoA
Blood glucose levels are increased by:
glycogenolysis
Lipogenesis generally begins with
Acetyl CoA
The vitamin that prevents breakdown of vitamin A and fatty acids is vitamin
E
Which of the following terms describes the process by which glucose is metabolized to produce CO2, H2O, and energy?
catabolism
The lipoproteins that carry absorbed lipids from the intestinal tract to the bloodstream are the
chylomicrons
Which of the following hormones is most directly involved during the post-absorptive state?
glucagon
The conversion of glycerol and amino acids into glucose in called:
gluconeogenesis
The process of synthesizing glucose from noncarbohydrates is called
gluconeogenesis
All of the following are reasons why glucose is the primary energy source for cells except
glycogen breakdown occurs very slowly.
When the blood glucose level becomes low, which of the following would most likely increase?
glycogenlysis
At the Holy Frijoles restaurant, you order a burrito grande with extra sour cream and cheese and an order of tortilla chips with guacamole. You're very satisfied with your meal—it's a lot of food—and as you finish off the last of the chips, the satiety center in your ________ starts letting you know that you've had enough to eat now.
hypothalamus
________ is deficient in one or more of the essential amino acids.
incomplete protein
A political prisoner has been on a hunger strike for seven days. Compared to normal, he has:
increased release of fatty acid
Temperature regulation is:
influenced by peripheral thermoreceptors in the skin
A decrease in body weight occurs when caloric intake:
is less than basal metabolism plus external work
Impaired fat absorption in the intestine would interfere with the absorption of
vitamin A
Pellagra, an epithelial and mucosal deterioration, results from a deficiency in
vitamin B3 folic acid
Deficiency in what vitamin can result in a condition called scurvy?
vitamin c
