BIOL-1050 Practical Exam Study Guide

Clemson

How do you plot absorbance over time in Excel?

1. In the first row of the spreadsheet, plot your time (skip the A1 box, start at B1). In column A, input the sample.

2. Fill out values recorded

3. Select your entire data by highlighting the relevant cells. Then, go to the "Insert" tab, choose "Chart," and select "Scatter”.

4. On your graph, double click your points and add a gradient line

5. Then, right click your points and click “Add Trendline”. On that screen, find the box that says “Display Equation on chart”.

6. Done! Your result should look like the picture attached.

What is the relationship between pH and pOH?

pH + pOH = 14

How do you find pOH?

14 - pH = pOH

How do you find [H+]?

[H+] = 10^-pH (just plug in the value of pH)

How do you find [OH-]?

[OH-] = 10^-pOH (just plug in the value of pOH)

How do you find pH (with a formula)?

pH = -log[H+] (just plug in the value of [H+])

Percent Solution

Grams required = (% desired) x (volume desired in mL)/100 mL

Percent by volume solution

C₁V₁ = C₂V₂ ; C₁V₁ is the concentration and volume of the stock solution and C₂V₂ is the concentration of the diluted solution.

Hypertonic Solution

A solution that has a higher concentration of solutes compared to the inside of a cell, causing water to flow out of the cell, leading to the cell to shrivel.

Hypotonic Solution

A solution that has a lower concentration of solutes compared to the inside of a cell, resulting in water flowing into the cell, which can cause it to swell or burst.

Volume Ratio of a Cylinder

Surface area/Volume

How do you calculate the total magnification of an image?

Multiply the power of the ocular lens by the power of the objective lens used.

Prokaryotic vs Eukaryotic

What kind of cell is this?

Diatoms 

What kind of cell is this?

Amoeba Cells

What kind of cell is this?

Cheek Cells

What kind of cell is this?

Elodea Leaf Cells

What kind of cell is this?

Onion Root Cells