Scuba divers use a BCD to control buoyancy. It is essentially a bag that can be inflated or deflated to prevent excessive sinking or floating. How do bony fish accomplish this?
A. They pump their operculum.
B. They adjust the level of gasses in their swim bladder.
C. They adjust their position using the pectoral and pelvic fins.
D. They swim rapidly to saturate the blood with oxygen.
B. They adjust the level of gasses in their swim bladder.
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Briefly describe how a phagocyte engulfs and ingests a pathogen
What will be an ideal response?
Which of the following is a region of DNA at the end of a linear chromosome?
A. Primer B. Telomere C. Intron D. Exon
When testing donated blood for compatibility you would find a person with O type blood
A) has O type antigens on their red blood cells. B) will lack plasma antibodies to A and B type antigens. C) will lack A and B red blood cell antigens. D) lacks HLA and MHC antigens. E) will have anti-O antibodies in their plasma.
Salmonelloses are
A. not caused by Salmonella typhi. B. associated with undercooked poultry and eggs, and reptile and rodent feces. C. gastroenteritis with vomiting and diarrhea. D. enteric fevers that often include septicemia. E. All of the choices are correct.