What is pH?

A.) How basic a solution is

B.) The concentration of hydrogen ions in solution

C.) How acidic a solution is

D.) The concentration of potassium ions in solution

Which are characteristics of polyps? A. are usually sessile, have tentacles, mouths open downward B. swim freely, lack tentacles, mouths open upward C. swim freely, have tentacles, mouths open downward D.

What type of information does our DNA contain?

As life began to populate earth's surface, what change was seen in the atmosphere? A. more oxygen was consumed B. more carbon dioxide was added C. more carbon dioxide was consumed D. more oxygen was added

What body system is involved with removing waste in animal cells?

Under what conditions will a substance be likely to enter a cell through diffusion

In a cell that is undergoing mitosis, what first happens to the chromosomes after the nuclear envelope breaks down

List one advantage, disadvantage about sporulation and what kind of organisms do this?

If you expose a photosynthesizing plant to water that contains both radioactive H and Radioactive 0, in which of the products of photosynthesis will the radioactive H and O show up?

Using your knowledge of the normal process of gametogenesis and fertilization, formulate a hypothesis as to how a chimeric individual could form.

How are diffusion and osmosis different? A. Osmosis is the movement of proteins. Diffusion is the movement of water. B. Osmosis is the movement of water. Diffusion is the movement of chemicals and molecules. C.