Practice Test - For 1st Semester Final

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•
Science
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the typical energy transfer from producers to primary consumers in an ecosystem?
Back
Typically, only about 10% of the energy (100 J) captured by producers is passed on to primary consumers.
2.
FLASHCARD QUESTION
Front
What is the optimal temperature for enzyme activity based on a graph?
Back
The optimal temperature for enzyme activity is 30°C.
3.
FLASHCARD QUESTION
Front
What conclusion can be drawn about the optimum pH of an enzyme from a graph?
Back
The optimum pH of the enzyme is 6.6.
4.
FLASHCARD QUESTION
Front
What are the two variables typically represented on a line graph?
Back
The two variables are the independent variable and the dependent variable.
5.
FLASHCARD QUESTION
Front
Which vessel in the stem transports water from the roots to the leaves?
Back
The xylem transports water from the roots to the leaves.
6.
FLASHCARD QUESTION
Front
What is the role of producers in an ecosystem?
Back
Producers capture energy from sunlight and convert it into chemical energy through photosynthesis.
7.
FLASHCARD QUESTION
Front
Define primary consumers in an ecosystem.
Back
Primary consumers are organisms that eat producers; they are typically herbivores.
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