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Tutor profile: Jaeden M.

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Jaeden M.
MBS Student at Tuft's University
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Questions

Subject: Biochemistry

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Question:

What is the difference between Passive transport and Active transport?

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Jaeden M.
Answer:

Passive transport and Active transport are both mechanisms of membrane transport that can move ions, molecules or other materials into or out of the cell. Passive transport is a spontaneous process that has a negative delta G and does not require the input of energy. It moves molecules down their concentration gradient from an area of high concentration to an area of low concentration. Active transport is a non-spontaneous process that has a positive delta G that requires the use of enzymes and the input of energy, since this process does not readily occur. It moves molecules against their concentration gradient from an area of low concentration to an area of high concentration.

Subject: Biology

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Question:

What happens to a cell when placed in the following types of solution: - hypotonic solution - hypertonic solution - isotonic solution

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Jaeden M.
Answer:

When thinking of what will happen to a cell, the rule to remember is that water will always travel to an area where there is a high solute concentration. In a hypotonic solution, the key word is "hypo" meaning low. So, in a hypotonic solution there is little salt in the solution, but an excess of solute in the cell. Therefore, in a hypotonic solution, the cell will swell as water enters and become larger. In a hypertonic solution, the key word is "hyper" meaning in excess. So, in a hypertonic solution, there is an excess of solute in the solution. Therefore, the cell will shrink as water leaves the cell. In an isotonic solution, the concentration of solute and water are equal so there is no movement and no change to the cell.

Subject: Algebra

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Question:

Solve the following equation: 4x - 7 = 9

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Jaeden M.
Answer:

The following problem is read "4 times x minus 7 equals 9." This is algebra problem which contains a variable. The variable in this equation is "x." To solve this problem, you want to have the variable that you are solving for one side of the equation and everything else on the other side. One rule to remember is, what you do to one side of the equation, you must do to the other side. Your first step to isolate the variable is that you want to "add 7" to both sides of the equation. Your equation will look like this, " 4x - 7 + 7 = 9 + 7." Once you do this, the "-7" will cancel out on the left side of the question and you will be "adding 7" to the right side. Your new equation is "4x = 16". To isolate the variable x, the next step is to divide by the constant 4. Your answer will be x = 4.

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