A firefighter breathes in air normally as he enters a building following an explosion and fire. He has a meter that predicts the PO2 will approximate 15 mm Hg in his tissue fluids as he actively moves about the room. Select the best statement.
a. The large changes in PO2 tissue environments cause only very small changes in hemoglobin O2 saturation, and no oxygen is needed.
b. The firefighter is at about 10% hemoglobin O2 saturation, and he requires an external air tank.
c. The firefighter's hemoglobin saturation will be about one oxygen per hemoglobin, and he will require an external air tank.
d. The S-shaped saturation curve of hemoglobin is flat at this PO2, and O2 saturation doesn't change much with PO2 changes in mm Hg.

The difference between amphid and plasmid

Anita thinks that she has heterozygous alleles for red hair.if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening