Match the following terms and definitions. 1. the testing of a hypothesis in duplicate with only one factor being different hypothesis 2. an assumed explanation for a problem scientific method 3. a recognized means of inquiry to provide scientific answers to questions controlled experiment 4. supported by evidence gathered over a period of time theory

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.

Describe the two types of vascular tissue

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?