Lab 1
Which part of the microscope controls the amount of light that reaches the specimen?
Iris Diaphragm
What type of variables are nonliving components of the environment that affect living creatures (ie. water, soil pH, sunlight)?
Abiotic Variables
You have a solution with a pH of 3 and your goal is to get it to a pH of 5. Should you use HCL or NaOH?
NaOH
What organelle is found only in animal cells?
Centrioles
Which part of the microscope is to re-magnify the image formed by the objective lens?
Ocular Lens
A group of worms have the option between a wet paper towel and a dry paper towel, and most choose the wet one; what is the variable being tested?
Moisture
What colour is a positive result from an iodine test?
Dark Blue
When water leaves a plant cell, the vacuole collapses and the plasma membrane “shrinks” away from the cell wall. This process is called ________.
Plasmolysis
What effect do these 3 things have on a specimen:
1. Decreasing light intensity
2. Staining
3. Condenser adjustment
Increase Contrast
What are the two types of hypotheses used in scientific research?
Null Hypothesis (Ho) and Alternative Hypothesis (Ha)
What are two amino acids joined together by?
A peptide bond
What organelle functions to synthesize lipids?
Smooth Endoplasmic Reticulum
What is the relationship between magnification and depth of field?
Inversely Proportional
What two pieces of information do you need to find your critical value?
Degrees of Freedom and P-value
If you put starch in a test tube, and you add heat and acid what biological molecule would you expect the test tube to have?
Glucose
What is the name of the pressure exerted by fluid in a cell that presses the cell membrane against the cell wall?
Turgor Pressure
A specimen has an actual size of 0.3mm, but is drawn 18cm in length. What is the magnification of the drawing?
600X
_________ tests eliminate and/or reduce the possibility that _______ other than the one you are testing are causing the observed results
Control and Variables
What reagent is used to test for glucose?
Benedict's Reagent
If an emergency situation were to occur in the lab, what number would you dial from a college phone?
4444