Select all the correct answers. Which two generalizations can be made based on what you know about cycles of matter in a closed system?
O
New matter is added, and old matter is destroyed.
O
Matter changes its physical form, allowing it to return to its original state.
The amount of matter within the system remains the same.
Matter and energy can cross the boundaries of the system.
O
The cycle has a well-defined starting and stopping point.
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Explain nonnuclear inheritance. ~ ap biology

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

What is the number of phosphates in an atp molecule