Which process involves antibodies cross-linking cells or particles into large aggregates?
A. Neutralization
B. Opsonization
C. Complement fixation
D. Agglutination
E. Anamnestic response
Answer: D
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In females, estrogen and progesterone (select all correct choices):
A. direct development of female reproductive structures during embryogenesis. B. direct development of female secondary sexual characteristics during puberty. C. regulate the menstrual cycle and support pregnancy. D. maintain adult health. E. None of these choices are correct.
This organism lives in an aquatic environment and is a eukaryotic heterotroph without any cell walls. What kingdom does it likely belong to?
a. animals
b. fungi
c. plants
d. archaea
What characterizes a bacterial cell that can undergo transformation?
What will be an ideal response?
Which of the following allergies and treatments is mismatched?
A) allergic asthma: inhaled drugs that open up the bronchi B) insect bite/sting allergy: continued preemptive treatment with an injected antibody preparation that ties up the patient's IgE antibodies C) food allergy: managed on a contact basis using antihistamines like Benadryl D) anaphylaxis: epinephrine may be administered and emergency medical care must be sought E) atopic dermatitis: usually treated topically with ointments that may contain steroid anti-inflammatory drugs