Assume the po2 in a resting tissue is 40 mmhg. how much of the total o2 bound to hemoglobin in arterial blood will be released as the blood moves through the tissue capillary beds? assume that the %hb saturation is 99% in arterial blood. hemoglobin saturation, % 40 60 80 resting cell po, (mm hg) 100 alveoli
a) about 25%
b) about 60 mmhg
c) about 75%

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.

Select the word from the list that best fits the definition apparent movement of a star used to measure its distance from earth