The slow flow of blood in the capillaries facilitates release of oxygen.
a. true
b. false
Answer: a. true
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Organisms are composed of molecules, which are collections of smaller units, termed:
A. monomers. B. atoms. C. electrons. D. polymers. E. ions.
Which of the following statements regarding hypersensitivity are true? (Check all that apply.)
_____ The acceptance of self cells is known as immunological tolerance. _____ Allergies are caused by IgG secretion in response to antigens. _____ Autoreactive B cells produce autoantibodies causing inflammation. _____ Itchy welts or hives could be called a local anaphylaxis. _____ Delayed hypersensitivity is mediated by TH cells and macrophages.
Action potentials are typically also characterized as graded potentials.
Answer the following statement true (T) or false (F)
The core theme of biology, which explains both the unity and diversity of life, is
A) genetics. B) ecology. C) evolution. D) metabolism.