What does the “positive-inside rule” for transmembrane prote…

What does the “positive-inside rule” for transmembrane proteins state? A) Negative residues prefer cytoplasmic side B) Positive residues are only extracellular C) All charged residues are in the membrane D) Positively charged residues (Arg, Lys) preferentially locate on cytoplasmic side 

What is the primary difference between an alpha helix and be…

What is the primary difference between an alpha helix and beta sheet in terms of hydrogen bonding? A) Alpha helix has no hydrogen bonds B) Alpha helix has hydrogen bonds within the same chain (i to i+4), beta sheet between adjacent strands C) Beta sheets have no hydrogen bonds D) Both have identical hydrogen bonding patterns