Which statement is FALSE with regard to proteins?
A. Their roles in the body include acting as enzymes, providing structural support, and signaling between cells.
B. They make up a greater percentage of body mass than carbohydrates do.
C. They are composed of nucleic acids.
D. They are macromolecules with subunits linked by polypeptide bonds.
E. They are polymers made up of amino acids.
C
You might also like to view...
When a large biological molecule is digested by the addition of water, the reaction is termed _________.
Fill in the blank with correct word.
Though you are an attentive parent, you lost track of your inquisitive toddler for a few minutes, just long enough for him to wander into the garage and open a package of insecticide that you use to control insects in your garden. You have no idea if any of the poison has been ingested, inhaled, or absorbed through his skin. You take the package away from your child and read under the "caution"
section that it is an anticholinesterase. Given that this poison was made for insects, not humans, should you be worried? Explain your answer. What would happen to the child if he has indeed been affected? Explain which type of synapses could be affected. Propose an antidote (it's OK if you don't remember a specific compound, just describe what type of effect may reverse the effects of the insecticide).
You and your fellow deep-sea scientists have discovered a new form of marine invertebrate, and are anxious to determine the similarities and differences to animals already characterized. Chemical analysis reveals the following concentrations of permeable cations:
Nernst equation: Eion = 61/z × log [ion]out/[ion]in
How many arcseconds are in a full circle?
A. 1,296,000 B. 360 C. 3,600
What structure keeps food from entering the larynx during swallowing?
A. Epiglottis B. Laryngopharynx C. Tongue D. Soft palate