What technological advancement was necessary before scientist could begin to observe cells?

I'm the three domain system which of the following domains includes organisms from more than one kingdom

This imaging test can tell you the speed and direction of blood flow? Ultrasound CT MRI None of the above

The end result of metabolism is a cellular energy unit called an enzyme. a carbohydrate. a glucose molecule. ATP.

Disease that occurs when cell cycle is no longer regulated

A sealed metal container holds a gas. What happens when the container is heated?

What organelle stores DNA in eurkaryotic cells?

What two genotypes would show as a dominant trait?

Lymphoma is a disease that prevents the lymph nodes from functioning properly. which would be a result someone having this disease a) they would be more likely to be harmed by common viruses b) they would be less likely to catch a cold or a flue c)

When energy is realesed during a chemical reaction what is it called?

The atmosphere contains tiny solid particles called