Covalent bonds are formed between amino and carboxy groups in proteins by:

The mushroom Amanita phalloides contains a peptide called alpha-amanitin. This toxin blocks Pol II which catalyzes phosphodiester bond formation between ribose sugars in mRNA. The initial effect of the toxin is to block:

Epidermolysis bullosa is an inherited disease where keratinocytes separate from the dermis. You would expect that the mutations which cause this disease to be genes that encode for proteins found in:

Hydrogen bonding between the carbonyl oxygen of one amino acid and the hydrogen on the amine of a nearby amino acid in an i + 4 arrangement is responsible for the _______ structure in proteins.

Two solutions are separated by a membrane that contains only channels permeable to water (aquaporins). The solution in the left-hand compartment contains 50 millimolar NaCl, which dissociates completely, and the right hand compartment contains 100 millimolar urea which is a small, charged molecule that does not dissociate.  Which of the following statements is correct?

(9 points) Peptides hormones are synthesized on endoplasmic reticulum and packaged in before being attached through the motor protein to a cytoskeletal protein polymer called the for transport to the axon terminal. This motor protein converts chemical to mechanical energy by cleaving to . Because the peptides are propelled toward the axon terminal, this protein is said to be a end directed motor. Growth factors moving in vesicles in the opposite direction are propelled by the end directed motor, .

What happens if you cheat on any assigned activities?

Disinfectants used on exam room surfaces may include which of the following?

Which of the following is NOT true concerning the lighting in an exam room prepared for a visually impaired patient?

Which of the following is the most appropriate means of sanitizing delicate instruments?