What might be a symptom of a person whose vein valves are not functioning properly and are causing fluid to flow away from the heart?

Plant cells do not contain contractile vacuoles. what happens when a plant is watered?

Which of the following statements is true? A) Both prokaryotic and eukaryotic organisms can have one or more cells. B) Prokaryotic organisms are always unicellular, but eukaryotic organisms are always multicellular.

What effect could an uncontrolled grass carp population have on the energy pyramids of a lake environment?

Why do zoologists name the bones/muscles of frogs like those of a human?

Which viral genome is likely to require an RNA-dependent RNA polymerase for transciption upon viral entry?

What stores information in a cell? a. proteins b. carbohydrates c. lipids d. dna

In Tinker v. Des Moines, why did the Supreme Court rule in favor of the students who wore armbands?

What is one of the most important factors in determining whether a chemical reaction will occur?

What is a alleles in biology?

Sex-linked traits are found on which chromosome?