Which type of sponge material supports a sponge’s body structure? a. spongin b. choanocyte c. spicule d. both a and c

both a n c

spongin is a collagen protein which forms the fibrous "skeleton" of a sponge and gives sponges some flexibility.. Spicules help keep the sponge rigid as well as make it unpalatable to predators

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !