For about how many years of geological time have humans existed on earth

Which of the following is not a function performed by proteins? And explain why they are correct or incorrect A. antibodies used in body defense B. hormones that serve as chemical messengers C. insulators for protection against temperature change D.

Name 3 metabolic activities of the kidneys related to urine production

A generalist is a species that a. Occupies a large habitat range b. Occupies a variety of ecological niches c. Can't reproduce under highly variable conditions d. Can reproduce only under specific conditions

Type of chemical reaction that involves the loss of water from the reacting molecules. in biological systems, it usually refers to the production of larger, biomolecules or polymers from smaller monomers.

What is the word used for one set of offspring (children, parents, grandparents, etc.)

What happens to the pressure exerted on blood when the heart contracts? What happens to pressure exerted on the blood when the heart relaxes or the blood vessels dilate?

Linda is studying while listening to her ipod. she notices that when she raises the volume five decibels when the volume is initially low, the change is very noticeable.

What will happen if our kidney stops working?

Amphibians have internal fertilization that requires the presence of water. true or false

Nearly all organisms on earth carry out some form of glycolysis. How does that fact support or not support the assertion that glycolysis is one of the oldest metabolic pathways?