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ASU BIO 100 EXAM 3 all questions solved 100 accurately latest version
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ASU BIO 100 EXAM 3 QUESTIONS &ANSWERS
Explain the functions of each system of the body: Digestive - CORRECT
ANSWER-Mechanical and chemical breakdown/digestion of food. Absorption of
nutrients. Undigested waste product that is eliminated.
Explain the functions of each system of the body: Cardiovascular (respiratory and
circulatory) - CORRECT ANSWER-Transportation (blood delivers oxygen and
nutrients), regulation of body temperature, and immunity
Explain the functions of each system of the body: Immune - CORRECT
ANSWER-Battle infection, maintain homeostasis by eliminating damaged cells,
protects the body against foreign organisms.
Explain the functions of each system of the body: Skeletal - CORRECT
ANSWER-support, movement, storage of minerals (bone marrow) blood cell
formation
Explain the functions of each system of the body: muscular - CORRECT
ANSWER-movement, maintenance of body posture, production of heat,
contraction of the heart, blood pressure maintenance, intestinal movement
(elimination of feces)
Explain the functions of each system of the body: Endocrine - CORRECT
ANSWER-Communication, integration, and control (hormonally)
Explain the functions of each system of the body: Reproductive - CORRECT
ANSWER-ensures survival of the human race
Explain the functions of each system of the body: Nervous - CORRECT
ANSWER-Communication, integration, control, recognition of sensory stimuli
(CNS & PNS)
Compare and contrast how positive and negative feedback mechanisms are
used to maintain homeostasis. Use these concepts to describe: The
, maintenance of blood glucose levels: - CORRECT ANSWER-The control of
blood sugar (glucose) by insulin is another good example of a negative feedback
mechanism. When blood sugar rises, receptors in the body sense a change. In
turn, the control center (pancreas) secretes insulin into the blood effectively
lowering blood sugar levels. Once blood sugar levels reach homeostasis, the
pancreas stops releasing insulin.
Compare and contrast how positive and negative feedback mechanisms are
used to maintain homeostasis. Use these concepts to describe: The release of
platelets to form blood clots: - CORRECT ANSWER-once a vessel is damaged,
platelets start to cling to the injured site and release chemicals that attract more
platelets. The platelets continue to pile up and release chemicals until a clot is
formed.
What does it mean if an organism is an ectotherm? - CORRECT
ANSWER-depend mainly on external heat sources - their body temperature
changes with the temperature of the environment (reptiles, snakes, lizards)
What does it mean if an organism is an Endotherm? - CORRECT
ANSWER-generate most of the heat they need internally
(mammals/humans/dogs)
Herbivorous mammals tend to have extremely long digestive systems, especially
the intestines; omnivores have intermediate length intestines; and carnivores
have extremely short intestines. What might be a logical explanation for this
pattern? - CORRECT ANSWER-Plants are hard to break down and need more
time to get nutrients.
Why do strict vegetarians (vegans) have to be more careful of their choices of
food than do vegetarians that also eat cheese, eggs, and dairy products? -
CORRECT ANSWER-Because they aren't getting the vitamins and amino acids
the body requires to function properly
How do vaccines work? - CORRECT ANSWER-The body will produce antibodies
against the vaccine so when you have the real thing your body will be prepared.
You may not even get sick.
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