What type of an extracellular matrix does blood have?
a. gel-like
b. matrix hardened by calcium and phosphorus
c. fluid
d. glycoprotein rich
e. tightly packed with fibres
c
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Helicobacter pylori is a principal causative agent of
A. gastroenteritis. B. toxic shock syndrome. C. human ehrlichiosis. D. peptic ulcer disease.
Human chromosome 2 appears to be:
A. a fusion product of two simian chromosomes. B. significantly different from simian chromosome 2. C. 50% homologous to simian chromosome 2. D. primarily coding for human traits.
What is the term that describes the study of the relationship between living things and components of their environment?
a. zoology b. ecology c. herpetology d. analogy e. ichnology
Which of the following is the longest lasting type of immunity?
a. an adult receiving antiserum/antitoxin injections b. a body receives antibodies to chickenpox across the placenta c. a person survived an infectious disease d. a baby receives antibodies through breastfeeding