All of the following pertain to tapeworms, except the
A. cysticerci are young infective larvae ingested in undercooked meat.
B. one proglottid segment will have either female or male reproductive organs.
C. proglottids are reproductive segments.
D. scolex is the attachment organ.
E. strobila is made up of proglottids.
Answer: B
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When complexing with histones, the DNA phosphodiester backbone is in close proximity to:
A. the histone fold, two ? helices connected by two short links, this motif being found within H1, H2A, H2B, H3, and H4 B. the histone fold, two ? helices connected by two short links, this motif being found within H2A, H2B, H3, and H4 C. the histone fold, three ? helices connected by two short links, this motif being found within H1, H2A, H2B, H3, and H4 D. the histone fold, three ? helices connected by two short links, this motif being found within H2A, H2B, H3, and H4
The clonal selection theory implies that
A. related people have similar immune responses. B. antigens activate specific lymphocytes. C. only certain cells can produce interferon. D. memory cells are present at birth. E. the body selects which antigens it will respond to.
An organism with a haploid number of 10 will produce ________ combinations of chromosomes at the end of meiosis
A) 1024 B) 10,000 C) 10 D) 32 E) 100
In a DNA microarray, ________ are attached to the slide and ________ are fluorescently labeled.
A. the nucleotides; the cells B. the cDNAs; the genes C. the samples; the mRNAs D. the mRNAs; the genes E. the samples; the cDNAs