El cerebro humano es un ejemplo de a-célula
b-tejido
c-órgano
d-sistema de órganos

Mutations associated with albinism affect proteins involved in synthesis

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area