Me in some cells, bundles of form hairlike projections called cilia and flagella that enable cells to move rapidly through liquids. a) centrosomes b) microfilaments c) microtubules d) ribosomes

An adult inhales about 6.0×10−4 m3 of fresh air during a breath. only 20% of fresh air is oxygen. assume the pressure in the lungs is 1.0×105 paand the air is at a temperature of 300 k. how many oxygen molecules are in each breath? a. 1.4x10^23 b. 2.9x10^21 c. 4.9x10^-4 d. 2.9 x10^25