Atomic mass is determined by the number of protons plus the number of?

What units would you use to measure a virus (manometers, micrometers, or millimeters?) What units would you use to measure a red blood cell (manometers, micrometers, or millimeters?)

In my garden there are pea plants. 9 short, 15 tall, and 13 normal height plants. What is the frequency of short pea plants?

Why do cells have plasma membrane? A) to separate proteins from the nucleus B) to distinguish plants from animals C) to define the size of a cell D) to separate the inside of a cell from its environment

Liver cells, bone cells, nerve cells, muscle cells are called?

What is a physical place where an organism lives

The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient (from areas of low proton concentration to areas of high proton concentration). this is an example of:

What is algae? and where is come from?

Are mushrooms biotic or abiotic

What type of blood vessels join arteries to veins

Fossils found in a cave at krapina, croatia, show evidence of: a. cannibalism. b. all of the above. c. speaking ability. d. pottery production.