Which of the following mechanisms is used by gram-negative bacteria to cross the blood-brain barrier?
A) producing fimbriae
B) inducing endocytosis
C) producing toxins
D) inducing TNF
E) antigenic variation
D
Biology & Microbiology
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To what group did the earliest fossils of eukaryotes belong?
A. green algae B. red algae C. diatoms D. coccolithophorid algae E. dinoflagellates
Biology & Microbiology
Which molecule is the most abundant in the extracellular matrix of connective tissues?
a. collagen b. cholesterol c. fibronectin d. albumin e. elastin
Biology & Microbiology
Which chromosomes are carried by a normal female bird?
Biology & Microbiology
When a DNA sequence is transferred into a host cell from another cell, the resulting new form of DNA is called
A. a clone. B. GM organism. C. recombinant DNA. D. plasmid.
Biology & Microbiology