Chemokines are adhesion molecules found on surfaces of leucocytes and play a crucial role in the recruitment of leukocytes to the sites of inflammation .
a. true
b. false
Ans: b. false
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If a species has 42 pairs of chromosomes, how many maternal and paternal chromosome combinations are possible
during independent assortment?
a. 422 b. 242 c. 221 d. 212 e. 842
____ glands lack ducts
a. Endocrine b. Muscular c. Nervous d. Exocrine e. Connective
Bacteriophages selectively infect bacterial cells. How might they be used as a therapeutic treatment in humans?
A. Bacteriophages can be used to genetically engineer bacterial cells making them more susceptible to drugs. B. Phages can be used to stimulate human immune cells to attack and kill bacterial cells. C. Phages can carry genes into cells which will genetically modify the host cells to prevent infection. D. Humans suffering from infections with antibiotic resistant bacteria can be treated with phages, which will infect and lyse the bacterial cells, leaving human cells unaffected.
Ureaplasma urealyticum generates an electrochemical gradient, despite the absence of an electron transport chain, by synthesizing urea from ammonia/ammonium to generate chemiosmotic potentials.
Answer the following statement true (T) or false (F)