Propose, by means of a sketch, geometrical shapes of cells that would allow a balance of function and materials movement for each of the following situations. (Hint: Think about which aspect of shape would help the cell best carry out its given fu nction.) a. Long distance communication. b. Stretching. c. Storage. d. Covering and protecting. e. Importing large quantities of material for transfer to other cells.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

The fluid mosaic model of the membrane proposed that membranes