________ secrete antibodies.
A. Helper T cells
B. Plasma cells
C. Natural killer cells
D. T cells
Answer: B
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Beginning with the simplest level of structure, which order of organization of genetic material is CORRECT?
A. DNA, nucleotide, gene, genome, chromosome. B. nucleotide, DNA, gene, chromosome, genome. C. DNA, nucleotide, gene, chromosome, genome. D. nucleotide, DNA, gene, genome, chromosome. E. nucleotide, DNA, chromosome, gene, genome.
Rainfall in the Northern Hemisphere is greater than rainfall in the Southern Hemisphere
Indicate whether the statement is true or false
Which one of the following forms of contraception is the most effective in preventing pregnancy?
A) condom B) rhythm method C) diaphragm D) tubal ligation E) cervical cap
Up to 70% of travel-associated Gastrointestinal Diseases are caused by:
What will be an ideal response?