BISC 120 Lab Exam | University of Southern California | Questions with 100% Verified Answers | Latest Update

BISC 120 Lab Exam | University of Southern California | Questions with 100%
Verified Answers | Latest Update

Question: Dissecting microscope (stereoscope)
Answer:
low magnification:8x-35x view larger or opaque organisms mono or binocular

Question: Compound light microscope
Answer:
high magnification: 40x-1000x view very small objects mono or binocular

Question: Magnification of ocular/eyepiece
Answer:
10x

Question: Four objectives;
Answer:
4x,10x,40x and 100x

Question: Total magnifications
Answer:
40x--> scanning 100x-->low-power 400x--> high-power 1000x--> oil-immersion

Question: Prepared slides are
Answer:
permanent

Question: Wet-mount slides are
Answer:
temporary

Question: As magnification increases, diameter of field of view
Answer:
decreases

,Question: As magnification increases, depth of field
Answer:
decreases

Question: Data can be presented in two forms:
Answer:
table figure

Question: Parts of Scientific Method
Answer:
Making an observation Asking a question Proposing an explanation (hypothesis) based on
observations and previous knowledge Designing an experiment (procedure) Predicting results
Performing experiments Collecting and analyzing data Interpreting results Publication in a
peer-reviewed journal

Question: Hypothesis must be
Answer:
testable and falsifiable

Question: Define hypothesis
Answer:
proposed explanation for a question based on observations

Question: Designing the experiment
Answer:
defining variables and outlining a procedure

Question: Variables have to be
Answer:
clearly defined measurable controllable

Question: Dependent variable
Answer:
what is being measured in the experiment in response to experimental conditions

, Question: independent variable
Answer:
variable experimental conditions ex: time, temperature, concentration, age

Question: Controlled variables
Answer:
independent variables that are kept constant during the experiment

Question: Experimental Procedure
Answer:
step-by step process used to measure the dependent variable

Question: Level of Treatment
Answer:
the appropriate value for the independent treatment (experimental group)

Question: Control Treatment
Answer:
the independent variable is set to zero or to a standard value

Question: what was observed during the first week of lab?
Answer:
paramecium hydra daphnia anabaena

Question: What microscope was used the first week of lab?
Answer:
compound light microscope

Question: ___ objective has the largest depth of field
Answer:
scanning

Question: The magnification of the high power objective is
Answer:
40x