Which phrase best describes the mantle of a mollusk? A structure that facilitates movement.
A structure that facilitates movement.

A structure that allows mollusks to obtain food.
A structure that allows mollusks to obtain food.

A structure that allows parasitic mollusks to obtain a host.
A structure that allows parasitic mollusks to obtain a host.

A structure involved in shell building and protecting organs.

How are viruses and bacteria different?

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.