Please choose the answer that best fills in the blanks of this sentence in the correct order. A molecular fragment of an antigen that serves as the primary signal that the molecule is foreign is called a(n) ______, whereas a small foreign molecule that can only elicit an immune response when linked to another larger molecule is called a(n) ________.
A) Allergen; hapten
B) Epitope; immunoglobulin
C) Epitope; hapten
D) Hapten; epitope
C) Epitope; hapten
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"Seeds" of ancient lycophytes (existing over 300 million years ago) had which of the following characteristics? Select all correct choices
A. a haploid (1n) female gametophyte B. a diploid (2n) embryo C. a storage area for haploid (1n) male gametes D. a seed coat
Explain energy transduction and receptor potential as they relate to the function of a sensory receptor. What will be an ideal response?
Which process involves antibodies cross-linking cells or particles into large aggregates?
A. anamnestic response B. complement fixation C. opsonization D. agglutination E. neutralization
What are two properties that various types of cancer cells share?
What will be an ideal response?