A structure on a cell that binds with something, like a hormone is called a (n)

A. catalyst

B. protein

C. receptor

D. axon

Which best describes the exocrine glands? Exocrine glands function only for digestion and temperature regulation. Exocrine glands can sometimes release substances out of the body. Exocrine glands secrete substances into the bloodstream.

How can a growing animal get calcium to make new bone tissue?

What gas is changed by some bacteria into a form that plants can use? A. carbon dioxide B. nitrogen C. oxygen D. water vapor

Why if a control group is not included in an experiment is difficult to draw a valid conclusion

Make a comparison between blood taken from an artery in the leg and blood taken from a vein in the leg.

which of the following fossil is best described as forming when minerals replace all of the organisms

Why does a block of metal sink in water but the same size block of wood float? The molecules in the metal are closer together than the molecules of the wood. The metal is more compact.

Do eukaryotic have membrane-bound organelles?

Your chances of developing breast cancer dramatically increase with age. at what age do doctors recommend getting a yearly mammogram?

A mineral can be scratched by calcite but not by a fingernail. what is its approximate hardness?