Some protists can cause sexually transmitted diseases in humans
Indicate whether the statement is true or false
TRUE
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The oxygen content of water increases linearly with an increase in oxygen partial pressure, while the oxygen content of blood increases in a sigmoidal (S-shaped) fashion. Why?
A) Carbonic anhydrase contributes to carbon dioxide release in blood, but not water. B) The Bohr shift is stronger in water than in blood. C) Hemoglobin shows cooperative oxygen binding. D) Oxygen is transported equally by hemoglobin and blood plasma.
In muscle tissue, if there is not enough oxygen for aerobic respiration to occur, the muscle cell
A. can produce ATP by fermentation. B. cannot make ATP. C. uses creatine phosphate instead of ATP for energy. D. can produce ATP from fats. E. depletes its reserves of lactic acid.
Choose the true statements about pseudogenes.
A. Pseudogenes result from horizontal gene transfer. B. Missense mutations can produce pseudogenes. C. Premature stop codons can produce pseudogenes. D. Pseudogenes have DNA sequences very similar to a functional gene.
What characteristic does Vibrio share with Salmonella?
A. Both have O polysaccharide antigens. B. Both are oxidase positive. C. Both have polar flagella. D. Both have similar shape. E. Both are spread primarily by fecal contamination.