When an enzyme lowers the activation energy of a reaction, what happens?

An allele with the ability to the mask another allele represented with a capital letter

During swallowing, which structures prevent food from entering the nasopharynx and trachea? ... ?

Describe the parts of a neuron including the cell body, dendrites, axons, and terminals.

What type of cells do not stop dividing despite receiving this signal?

A bacterium is composed of a single cell. based on this information, you know it has which sign of life? A) information system B) response to the environment C) one or more cells D) reproduction

Viruses cannot reproduce on their own and require a host organism to do it for them. This is one reason viruses are not considered to be alive

If the environment changes what is the first thing a species will do to survive

Rheumatoid arthritis is an autoimmune disease which causes the joints in the body to be constantly inflammed. This disease results when body tissues are A. attacked by one's own immune system. B. infected by a virus. C. infected by bacteria. D.

If you push a chair across the floor at a constant velocity, how does the force compare with the force you exert

A hiker climbs a hill. How does the potential energy of the hiker change as she climbs higher?