Answer:
Gravity pulls denser air and water downward, forcing less dense air and water to move upward. The warm water near the surface of the ocean heats up with sunlight and evaporates, keeping the water cycle in motion.
Explanation:
(2) produce and transport gametes is your answer, to the site provided for fertilization and nourishing the embryo. But it does NOT prevent urine from leaving the body, or if its supposed to, does a poor job of it.
Answer:
I believe the answer is "C. When your cells need more oxygen."
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Answer:
A) B
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This is the correct answer on USATestPrep.
I believe the pellet is discarded in this part of protein purification procedure because the pellet contains unwanted bacterial debris, these includes the bacterial cell walls, membranes, and chromosomal DNA. Additionally, the pellet contains little, if any, GFP and can be discarded. Protein purification is a procedure that is intended to isolate one or few proteins from a complex mixture, normally cells, tissues or whole organisms. The process is important for the purpose of characterization of the function, structure and interactions of the proteins of interest.