Which of the following statements is true?
a. upon absorption, water-soluble vitamins are transported via the lymph.
b. excesses of fat-soluble vitamins are easily excreted in the urine.
c. a daily supply of water-soluble vitamins is not necessary for optimal health.
d. fat-soluble vitamins can accumulate in the liver and adipose tissue.

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.