
LS Semester 1 Benchmark Review
Flashcard
•
Biology
•
6th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the independent variable in an experiment?
Back
The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable. In Elin's investigation, the independent variable is the amount of fertilizer.
2.
FLASHCARD QUESTION
Front
What is the purpose of a triple beam balance?
Back
A triple beam balance is used to measure the mass of an object accurately. It consists of a beam with three sliding weights that can be adjusted to balance the object being measured.
3.
FLASHCARD QUESTION
Front
Where is there a low concentration of dye in a solution?
Back
There is a low concentration of dye at the bottom of the cup, where the dye has not yet spread out evenly.
4.
FLASHCARD QUESTION
Front
What shape describes a DNA molecule?
Back
A DNA molecule is best described as a double helix, which looks like a twisted ladder.
5.
FLASHCARD QUESTION
Front
What structures are found in plant cells but not in animal cells?
Back
Plant cells have a cell wall and chloroplasts, which are not found in animal cells.
6.
FLASHCARD QUESTION
Front
What is a dependent variable in an experiment?
Back
The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.
7.
FLASHCARD QUESTION
Front
What is the function of chloroplasts in plant cells?
Back
Chloroplasts are responsible for photosynthesis, the process by which plants convert sunlight into energy.
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