In which row are the structures and names correctly matched?

A

B

C

D

Consider a short polar region and a short non$-$polar region in a long polypeptide chain. When dissolved in water, the polypeptide will most likely fold to form a protein in which:

The non$-$polar region is exposed on its surface and the polar region is interior.

Both the non$-$polar region and the polar region are interior.

Both the non$-$polar and the polar region are exposed on its surface.

The polar region is exposed on its surface and the non$-$polar region is interior.

Guanine makes up $10\%$ of the nucleotides from a DNA sample of an organism. Approximately what percentage of nucleotides in this sample will be adenine?

$40\%$

$10\%$

$80\%$

Cannot determine from the information given

$\_\_\_$ are the subunits of carbohydrates, and $\_\_\_$are the subunits of nucleic acids

monosaccharides; nucleotides

polysaccharides; polypeptides

polysaccharides;nucleotides

monosaccharides; amino acids

nucleotides;amino acids

What is the best explanation for why water is an excellent solvent?

It takes water a long time to heat and a long time to cool.

Water molecules attract all other molecules.

Water molecules are attracted to each other due to hydrogen bonding.

Water is a polar molecule and ions$/$polar molecules can readily dissolve in it$.$

Which of the following substances will have a higher diffusion rate $($be most likely to diffuse$)$ through a pure phospholipid bilayer membrane that contains no proteins?

CH$3$ OH

Glucose

Na$+$

O$2$

Which of the following statements comparing bacteria and eukaryotes is true?

Eukaryotic cells have a nucleus surrounded by a nuclear membrane; bacterial cells don't.

Eukaryotic cells don't have cell walls; many bacterial cells do$.$

The genetic material of eukaryotic cells is DNA; the genetic material of bacteria can be either RNA or DNA.

Eukaryotic cells use a different code to specify the amino acids in proteins than bacterial cells.

Individuals who have a mutation in an enzyme called acid alpha$-$glucosidase $($GAA$)$ are often diagnosed with Pompe Disease. GAA is an acidic hydrolase that works optimally at a pH of $4\mathrm{.}5$ and is important in catabolizing glycogen within the cell. This fatal but rare disorder impacts the function of heart and skeletal muscles due to glycogen build up that is unable to be broken down and recycled. GAA is most likely stored in which organelle?