Amodel organism is a species that researchers study to better understand certain biological processes . mollusks and arthropoda are commonly used as model organisms for studying mechanisms of learning and memory , while sponges and jellyfish are not. why is that ?

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!

During photosynthesis, hydrogen ions are most directly used to in the chloroplast pictured above. a) make glucose b) make chlorophyll c) produce carbon dioxide d) drive the production of atp

Crystallization from cooling magma disvribe one way that a atoms bond b protons attract electronsc ions combine d minerals form