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Biology Review - Lab Basics Flashcards | StudBud
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Biology Review - Lab Basics
Biology Review - Lab Basics
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Scientific Method and Safety
Flashcards
15 cards
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Questions
15
Answers
1
As the amount of smoke increases, the amount of fresh air usually
increases / direct
decreases / direct
increases / indirect
decreases / indirect
2
Which is NOT a safe procedure
wearing open shoes (sandals) in the lab
reporting accidents
following directions
Wearing goggles
3
An example of a hypothesis is
If plants are placed in light, then they will grow taller
If plants grow taller then they are placed in light
Do plants grow taller in light?
Do taller plants survive better in light?
4
The best way to increase the validity of an experiment is to
all answers 1,2, and 3
use more trials
repeat the experiment
use a larger sample
5
A student wanted to study the effect of light on the rate of ripening of tomatoes. Ind. Var.?
light intensity
amount of soil provided
color of tomatoes
type of tomato plant
6
The error in this experiment of testing a fertilizer on a certain plant growth is
The student used only one type of fertilizer
The student used the same brand of fertilizer for the plants
The student used only one type of plant
The student fertilized the plants at different times
7
The hypothesis tests
the dependent variable only
both independent and dependent variables
the independent variable only
neither the independent or dependent variables
8
In an experiment to test the effects of cough drops on coughing, the control group
is given stomach medicine
is not given cough drops
is larger than the experimental group
is given cough drops
9
What's the next step that a student should follow after formulating a question / problem?
research the problem
reach a conclusion
graph data
form a hypothesis
10
In an appropriately designed experiment, a scientist isable to test the effect of
multiple variables
scientific observations
the hypothesis
a single variable
11
On a line graph, the independent variable is usually plotted on the
Z axis
Y axis
X axis
any of these axes
12
A student recorded the following data (2,4,8, 9, 23, 50). What is a good interval?
3
5
50
15
13
What was the dependent variable from question 4 (plants placed in light)
Amount of soil
Height of plants in cm
Amount of water
Amount of light
14
When heating a solution in a test tube, a student should
cork the tube
point the tube in any direction
wear goggles
hold the tube with 2 fingers
15
An example of safety equipment found in the lab is
an eye-wash station
an open flame
a broken fire extinguisher
sharps left unattended
