When damage occurs to ________, nerve impulse transmissions are slowed.
A. the myelin sheath
B. leukocytes
C. epithelial cells
D. adipocytes
E. chondrocytes
A. the myelin sheath
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Symptoms of delayed-type hypersensitivity may appear several hours to days after secondary exposure to the eliciting antigen
Indicate whether the statement is true or false.
Which of the following pertains to both tetanus and foodborne botulism?
A. They are caused by enterotoxins of the pathogen. B. They occur when endospore-contaminated soil enters deep wounds. C. Nausea and diarrhea are symptoms. D. An exotoxin blocks acetylcholine release. E. Treatment involves antitoxin therapy.
Three molecules of the fatty acid in question 8 are joined to a molecule of glycerol (C3H8O3). The resulting molecule has the formula:
a. C48H96O6 b. C48H98O9 c. C51H102O8 d. C51H98O6 e . C51H98O6
Gram-positive bacteria have ____ and appear ____ under the microscope after Gram staining.
A. thick cell walls; pink B. thick cell walls; purple C. thin cell walls; pink D. thin cell walls; purple E. thin cell walls; blue