What is creatinine?
a. A substance made of phosphate
b. A substance that can lead to uremia
c. A waste product of muscle metabolism
d. A chemical that can precipitate from the blood and
build up in the joints
Answer: c. A waste product of muscle metabolism
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When differentiation occurs, cells may also change in
_____ genetic content. _____ size. _____ shape.
Imagine you are a biologist with the task of genetically engineering a cow to survive on an alien planet. The planet has twice the gravity of Earth, the partial pressure of O2 is twice as high as that of Earth, and the partial pressure of CO2 is 100 times that of Earth. The planet is very dry, with an extremely low relative humidity. What changes would you make to the circulatory and respiratory
systems to accommodate these differences and allow your cow to function? What will be an ideal response?
What is the primary function of cellular respiration?
a. to oxidize glucose b. to produce proteins c. to regenerate ATP d. to metabolize nutrients
Which option correctly lists the direction carbon dioxide travels as it leaves the body of a human?
A) alveoli, bronchioles, bronchi, trachea, pharynx, larynx B) alveoli, bronchi, bronchioles, trachea, larynx, pharynx C) alveoli, bronchioles, bronchi, trachea, larynx, pharynx D) alveoli, bronchi, bronchioles, trachea, pharynx, larynx