The fluid that runs through the circulatory system

What was the main function of the protocell's fatty acid membrane? To allow sulfur dioxide to enter into the cell. To allow the cells to communicate with each other. To allow chemical compounds to enter into the cell.

In order for new species to develop, there must be a change in the

Describe what happens when an egg is fertilized in a female

For a molecule to be considered organic what elements must be present? A. Carbon only B. Oxygen and hydrogen C. Carbon and hydrogen D. Carbon and oxygen

If someone is skateboarding down a hill which type of energy is decreasing

Instinct is a changing, biologically inherited behavior pattern. T or F?

In which section of the nephron does the filtrate have a higher osmolarity than the blood when it enters and lower osmolarity than the blood when it leaves?

A population is best represented by

Carolyn suffers from the excessive secretion of insulin in the bloodstream. the medical term for this condition is

Some biological hazards (such as bacteria, viruses, parasites, and fungi) are undetectable by sight, smell or taste and can potentially cause an illness. What are these biological hazards called?