A person is walking through a park. A branch from a tree falls, nearly hitting her. Her heartbeat speeds up. Which part of the nervous system was responsible for this?

What is the organelle responsible for synthesis of proteins by bound ribosomes called? proteosome rough endoplasmic reticulum golgi apparatus smooth endoplasmic reticulum?

What are pelvic bones in snakes an example of

Name the parts of a chemical reaction

Use nucleolus in a sentence

Which of the following illustrates intraspecific competition? A sea gull swooping down to snatch a fish from the water's surface Male red-winged blackbirds defending limited nesting sites from other males A butterfly feeding on the nectar of a

A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria to begin with how many bacteria will there be after four hours

What best describes a protein?

A pathway by which a chemical element or molecule moves through both biotic and abiotic compartments of an ecosystem.

In respiration, does energy act as a reactant or a product

When ocean waves hit the beach, kinetic energy is stopped by the sand and rocks on the beach. The energy is then lost from the ocean. How does this example show the Law of Conservation of Energy?