All but which of the following factors limit cell size a)time required for diffusion b)elasticity of the plasma membrane c)presence of only one nucleus d)surface area-to-volume ratio

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

20 the compound al(nh3)2 has atoms of nitrogen.

Biology ! the conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as _[blank]_. filtration immigration reabsorption primary production