Hemoglobin binds oxygen most efficiently in areas of the body where the pH is low and the concentration of carbon dioxide is high
Indicate whether the statement is true or false
FALSE
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A vascular cylinder consists of cells of the _____
a. exodermis d. xylem and phloem b. endodermis e. endodermis, xylem and phloem c. root cortex f. all of these
Which of the following is true about all E.coli?
a. E.coli produce toxic proteins b. E.coli is only found in cows, deer, goats, and sheep c. E.coli is a common bacterium living in our intestines d. E.coli originate from fresh produce e. E.coli strains harmful to humans are also harmful to cattle
Which of the following kingdoms can do photosynthesis?
A. all animals B. some protists C. all bacteria D. some fungi E. all archaea
Chagas disease involves transmission of the pathogen by the
A. tsetse fly. B. hard-bodied tick. C. Anopheles mosquito. D. reduviid, "kissing," bug. E. phlebotomine (sand) fly.