Arrange the following sequence of procedures in the proper order in this experiment done to determine proteins present in pea plants during germination. 1. Load the proteins in polyacrylamide gel electrophoresis and separate them 2. Break the cells by grinding them in liquid nitrogen and suspending in a buffer 3. Select a suitable tissue to isolate proteins expressed only during germination 4. Centrifuge the broken cells to purify proteins from other molecules

What is the ecological role of food chains and food webs

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.