1) All but one of the organisms listed depends on the successful growth of kelp beds in a marine environment. That is the
A)
frogs.
B)
sea otters
C)
young fish
D)
crustaceans

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.

Fungi exist as single cells or as branching networks of multicellular filaments. how does the structure of filaments relate to their function