Our closest extinct relative is ____
a. Homo erectus
b. Homo habilis
c. Homo neanderthalensis
d. Australopithecus afarensis
e. Australopithecus africanus
ANSWER: c
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Monoclonal antibodies
A. are usually of different classes. B. usually recognize several epitopes. C. have the same variable regions. D. are always IgE.
Invisible living creatures were thought to exist and cause disease long before they were ever observed.
Answer the following statement true (T) or false (F)
Which statement is TRUE about mitosis in animal cells?
a. The location of the centromere is the same for each chromosome. b. All spindle fibers become attached to kinetochores. c. The spindle apparatus is composed of actin protein molecules. d. The spindle begins to disassemble during telophase. e. Some centromeres overlap midway at the spindle.
Answer the following questions true (T) or false (F)
1. Lipid A can cause septic shock. 2. Lymph is produced in the lymph nodes. 3. Small doses of antimicrobial drugs are effective in treatment of the late stages of Borrelia infection because the microbe is extremely susceptible.