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ASU BIO 100 EXAM 3 all questions solved 100 accurately latest version
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ASU BIO 100 EXAM 3Explain 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.
In Southern Copperhead snake venom; you'll find a protein called a disintegrin.
Disintegrins bind to a class of membrane receptors called integrins. Platelets use
integrin receptors to aggregate at a site of tissue damage. What effect do you think
disintegrin has on the snake's prey? - CORRECT ANSWER-The molecule interferes
with clot formation so that the venom can travel more efficiently from the site of the bite
to the rest of the body.
Anatomical designs that increase surface area are common in many body systems.
Give examples of how surface area is maximized in the digestive, respiratory, and
nervous systems of humans. Digestive: - CORRECT ANSWER-it is folded so that the
tract can have a lot of meters/surface area. This allows for more absorption.
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