Answer:A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.
Explanation:A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.
I believe that the statement is true. Alcohol absorption happens more quickly when the stomach is empty since there is no resistances for the absorption. It directly goes to the membranes then to the blood stream. Hope this answers the question.
Answer:
a) A beaker filled with 1 liter of deionized water? - water will flow into the bag so its volume will increase. The solution is <u>hypotonic</u>
b) A beaker filled with 1 liter of 10% sucrose solution? - water will flow out of the bag so its volume will reduce. The solution is <u>hypertonic</u>
c) A beaker filled with 1 liter of 2% sucrose solution - the volume of water in the bag will stay the same as the two solutions are in equilibrium. The solution is <u>isotonic</u>
Explanation:
Water moves by osmosis through a semi-permeable membrane. Osmosis describes the simple diffusion of water molecules.
Water molecules will move from a high concentration to a low concentration.
- If the bag of 2% sucrose solution is placed in a beaker of deionized water, the concentration of water in the deionized water is in the beaker higher than in the bag (because the water in the bag contains 2% sucrose). Therefore, the water in the beaker will move from a high concentration outside the bag to a lower concentration inside the bag
- If the bag of 2% sucrose solution is placed in a beaker of 10% sucrose solution, the concentration of water in the bag is higher than in the beaker (because there is more sucrose in the beaker). Therefore, the water in the bag will move from a higher concentration inside the bag to a lower concentration outside the bag.
- When the concentration of water is equal, the movment of water molecules reaches an equilibrium and there will be no change in the volume of water in the bag
Answer:
Stage REM Sleep
Explanation:
According to the AASM (American Association for Sleep Medicine), the sleep has five stages. The first is the stage of wakefulness when you are starting to feel drowsy. Then the stage N1 is the transition into sleep: the breath becomes shallow, and the body doesn't move or just a little. In stage N2 the physiological function of the body start to decrease and is more difficult to wake up than the stage before. The next stage is the N3, which is the stage when is more difficult to wake up from all stages because is the deepest sleep, and in this stage, the movement of the eyes stops. The last stage is REM,(rapid eye movements), in this stage the brain is more active but the body is paralyzed.
