To improve the reliability of these results, the student should

repeat the experiment using a larger number of seeds

What would the independent variable in this experiment?

Temperature of the seeds during growth

What is the relationship between the age of the mother and occurrence of Down's Syndrome?

As the age increases, the occurrence of DS increases

Which of the following shows a bad procedure for testing white-tailed deer food preferences?

Observe four deer in different locations and times

What is the purpose of the field without magnesium?

To compare the plants under normal conditions

Which statement is the best procedure to learn if a vaccine in a certain bird species is good?

Vaccinate half the birds and expose all 100 to the disease

What would be a valid hypothesis for this experiment?

Removing potassium will affect plant growth

Conclusions based on an experiment are most likely to be accepted when they are

consistent with experimental data and observations

What other information should the student include in his experiment?

How fast the dogs at their normal food

A valid inference based on these data is that

most photosynthetic organisms live above a depth of 150 cm

Neither group reported a case of the flu. Which would have made the study more valid?

test a third group that does not receive the supplement

A biologist reported success in breeding a tiger with a lion. This will be accepted as fact if

other researchers can replicate the experiment

Which data should be collected to support this hypothesis?

diameter of the cotton bolls in both fields

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LE Sci Method Review

20 termsStudBud Administration193 plays

Reviewing for Regents- Scientific Method Unit

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Questions 20

Answers

1
To improve the reliability of these results, the student should
revise the hypothesis
conclude that darkness is necessary for seed germination
conclude that light is necessary for seed germination
repeat the experiment using a larger number of seeds
2
What would the independent variable in this experiment?
Height of the trees after time
How far north or south each seed was planted
Temperature of the seeds during growth
Number of seeds per tree
3
What is the dependent variable in this experiment?
Substrate Concentration
Rate of Reaction
Amount of Enzyme
0 - 0.05
4
What is the relationship between the age of the mother and occurrence of Down's Syndrome?
As the age increases, the occurrence of DS increases
Age of the mother has no relationship with DS
As the age increases, the occurrence of DS decreases
As the age increases, the occurrence of DS is constant
5
Which of the following shows a bad procedure for testing white-tailed deer food preferences?
Observe 200 deer in various settings, but none in captivity
Observe 500 deer in 20 different locations and times
Observe four deer in different locations and times
Observe 300 deer in captivity, but none in nature
6
What is the purpose of the field without magnesium?
To compare the plants under normal conditions
To test chemicals other than magnesium
To experiment is several different locations
To understand the effect of water on the plants
7
What is the name of the equipment shown in this experiment?
Test Tube
Beaker
Graduated Cylinder
Flask
8
Which laboratory equipment would be most best for measuring liquids?
Balance
Graduated Cylinder
Beaker
Scoop
9
Which statement is the best procedure to learn if a vaccine in a certain bird species is good?
Vaccinate half the birds and expose all 100 to the disease
Vaccinate 100 birds and expose half of them to the disease
Vaccinate 100 birds and expose all 100 to the disease
Vaccinate half the birds, expose only those to the disease
10
The component missing from this experiment is a
control group
prediction
research plan
hypothesis
11
What would be a valid hypothesis for this experiment?
Plants can grow well in flasks
Adding essential minerals will affect plant growth
Removing potassium will affect plant growth
Adding potassium will affect plant growth
12
Conclusions based on an experiment are most likely to be accepted when they are
consistent with experimental data and observations
testing only one hypothesis
based on only one experimental design
from investigations having many experimental variables
13
What is the volume of water represented in the graduated cylinder shown below?
13.0 mL
10.3 mL
15.0 mL
14.0 mL
14
What other information should the student include in his experiment?
How fast the dogs at their normal food
Age of the dogs
Color of the dogs
If the dogs were indoor dogs or outdoor dogs
15
A valid inference based on these data is that
oxygen increases as photosynthetic organisms move deeper
organisms move up to increase carbon dioxide production
photosynthetic organisms respond to changing light levels
most photosynthetic organisms live above a depth of 150 cm
16
Neither group reported a case of the flu. Which would have made the study more valid?
test only one group with 200 mg of the supplement
test a third group that does not receive the supplement
test on both groups for 5 weeks instead of 10 weeks
test a third group that receives 150 mg of the supplement
17
What information would be placed on the x-axis when graphing this information?
Water Temperature
Level of Dissolved Oxygen
Amount of Algae
Number of Fish
18
The dependent variable in this experiment is the
pulse rate of each group
age of participants in each group
type of soda given to each group
amount of soda given to each group
19
A biologist reported success in breeding a tiger with a lion. This will be accepted as fact if
research shows that other animals can be crossbred
other researchers can replicate the experiment
the biologist included a control in the experiment
the offspring are given a scientific name
20
Which data should be collected to support this hypothesis?
diameter of the cotton bolls in both fields
length of the growing season in both fields
height of the cotton plants in both fields
color of the cotton bolls in both fields

LE Sci Method Review Flashcards | StudBud