Premeiotic germ cells that divide mitotically in females are
A) primary oocytes.
B) secondary oocytes.
C) ootids.
D) oogonia.
E) ova.
D) oogonia.
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Antibody titer can be measured by
A) negative microscopy. B) agglutination. C) plate counts done after isolating the pathogen. D) polymerase chain reaction.
Which of the following statements is false?
a. Individuals are injected with antibodies to produce passive immunity. b. A genetically engineered virus is not as potentially dangerous as a weakened but intact pathogen. c. Allergies occur when the body makes a strong immune response to a normally harmless substance. d. Allergies are a nuisance but are never dangerous or life threatening. e. An allergic response includes the secretion of mucus, prostaglandins, and histamines.
________ is the process of cell or tissue change in development
A) Transformation B) Morphogenesis C) Development D) Change E) None of these
Which layer of the skin lacks connective tissue?
A) epidermis B) dermis C) hypodermis D) hair