Fungi use a variety of substances to provide structure and perform different necessary functions. Which substance plays an important role in both the exoskeleton of crabs and the cell walls of fungi? cellulose chitin protein lipidsSome fungi are parasites. Please select the best answer from the choices provided T F

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

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.