The immune system normally distinguishes between which types of antigens?
A. Humoral and cellular
B. Self and non-self
C. Innate and acquired
D. B and T
E. Active and passive
Answer: B
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The pancreas secretes enzymes acting on
A. fats. B. proteins. C. carbohydrates. D. All apply.
In a lab setting, heating a vessel full of reactants will generally
A. increase the kinetic energy of the molecules and increase the reaction rate. B. raise the activation energy and catalyze the reaction. C. lower the activation energy and the kinetic energy of the reactants. D. convert products to reactants by increasing the energy requirements. E. lower the reaction rate due to the change in structure of the reactants.
The longest muscle in the body is the ____________________.
Fill in the blank(s) with the appropriate word(s).
Describe the functions of the facial bones
A) The facial bones protect the anterior portion of the brain. B) The facial bones protect the posterior portion of the brain and provide a site of attachment for neck muscles. C) The facial bones protect and support the entrances to the digestive and respiratory tracts and provide a site of attachment for muscles of facial expression. D) The facial bones provide a site of attachment for the muscles that move the eyes, jaw, and head. E) The facial bones form the lower jaw and provide a site of attachment for muscles that allow speaking and chewing.