What is a fibrous protein that is the principal component of hair and nails?
A. collagen
B. keratin
C. elastin
D. dermal papillae
Select your answer:
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Immunology › ViewWhich of the following best describes the differences between the classic and alternate complement pathways?
A. The classic pathway results in the lysis of the target cell, which is not the case with the alternate pathway.
B. The alternate pathway requires antibody for initiation, and the classic pathway is antibody-independent.
C. The classic pathway is more active than the alternate pathway.
D. The alternate pathway typically requires C3b for activation, while the classical pathway typically requires antigen-antibody complexes.
Thyroid and Intro to Endocrinology › View
Decreased thyroid secretion greatly increases the plasma levels of cholesterol, phospholipids, and triglycerides
A. TRUE
B. FALSE