If a person's blood type is A-, then the A antigen is found on that person's red blood cells and they also automatically have antibody that reacts with the Rh antigen.

a. true
b. false


Answer: b. false

Biology & Microbiology

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Identify the lagging strand during duplication of DNA starting from a double helix in the figure above

A) a B) b C) c D) d

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If your mother and father both are healthy but carry the allele for cystic fibrosis, which is caused by a

recessive allele, the odds of your having at least one allele for the disorder are

a. 1/4. b. 1/2. c. 3/4. d. 1. e. 0.

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Viral chromosomes exist in a variety of conformations and can be made up of ________

A) DNA only B) DNA, RNA, or protein C) protein- or lipid-coding sequences D) DNA or RNA E) RNA only

Biology & Microbiology

Which of the following bacteria oxidize nitrite (NO2-) to produce nitrate (NO3-)?

A) Nitrobacter B) Azospirillum C) Nocardia D) Cyanobacter E) Rhizobium

Biology & Microbiology