The relative concentration of solute inside and outside a cell can cause water molecules to move across the membrane. Which phrase would be an alternate title to the diagram? Exocytosis in a Cell
Facilitated Diffusion Across a Membrane
Osmosis Across a Membrane
Active Transport in a Cell

Which of the following examples can cause gene flow between populations? a. an increase in predators to a population of zebra b. a volcanic eruption that kills half of a population of mice c. bird droppings that contain seeds from a different location d. a person that sprays a toxin on a group of mosquitoes

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.

Classify the structures as homologous or analogous, depending on their structure and function.