What organelle controls a cell's activities? nucleus mitochondria centriole

Chris, who works at a pesticide factory, comes to the clinic complaining of muscle spasms that interfere with his movement and breathing.

Explain how water can be an abiotic environmental factor when it is essential to all life on earth.

Which statement best describes science

Consider the two-step metabolic pathway: A - (enzyme 1) - >B - (enzyme 2) - >C How would inactivating enzyme 1 affect the concentrations of molecules A, B, and C relative to what they would be if the pathway were fully functional?

How do non green leaves photosynthesize

What are the seven classification levels in Linnaeus' system?

What is Grave's disease?

What condition causes storms to occur • freezing of water droplets • Sudden change in air pressure • Condensation of water vapor • rapid heating of upper atmosphere

Explain the significance of anaphase 1

Explain the differences between the human egg and the chicken egg. Use what you see in the eggs and what you know about the way chickens develop in the shell and humans develop in the womb to formulate your answer