Calculate the sedimentation coefficient in water for (a) A spherical cell of 3 µm radius. (b) A spherical (or globular) macromolecule of 3 nm radius. Assume that the density of each is 1.05 g/cm3. (c) Calculate the number of g’s required in a centrifuge if the cells are to be sedimented through 2 cm in 5 min. (d) Similarly, calculate the number of g’s required to sediment the macromolecule at a rate of 1 mm/h

individual oxygen atoms are formed during photosynthesis.-c.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully