Maintaining a certain calcium concentration is important for the proper functioning of which cells? Check all that apply.

skin cells

nerve cells

blood cells

liver cells

muscle cells

Dr. Bio samples some pond water to observe under the microscope. She finds the specimen above, which seems to have a clear shell or wall with yellowish pigmentation within. No flagella or cilia are observed.

Ocean waves have energy what happens to the energy in the wave as it crashes to shore

What are some open-ended questions on melatonin and its functions?

Which systems work together to cool the body?

Both DNA and RNA are synthesized by covalently linking a nucleoside triphosphate to the previous nucleotide, constantly adding to a growing chain. In the case of DNA, the new strand becomes part of a stable helix.

How insulin binds to cells and the mechanism involved in triggering the cells to take in glucose?

The structure can only be found in a plant cell and not an animal cell

Why must experiments be repeated many times

Why is a nucleus found in both plant and animal cells?

Explain three disadvantages to using an electron microscope to view microorganisms.