Final Exam Semester 1
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is diffusion?
Back
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached.
2.
FLASHCARD QUESTION
Front
What is the role of tRNA in protein synthesis?
Back
tRNA (transfer RNA) brings amino acids to the ribosome, where they are assembled into proteins according to the sequence of the mRNA.
3.
FLASHCARD QUESTION
Front
What is the main purpose of cellular respiration?
Back
The main purpose of cellular respiration is to produce energy (ATP) for cellular activities.
4.
FLASHCARD QUESTION
Front
What is ATP?
Back
ATP (adenosine triphosphate) is the energy molecule used by cells to power various biological processes.
5.
FLASHCARD QUESTION
Front
What phase of mitosis is characterized by the alignment of chromosomes at the cell's equator?
Back
Metaphase is the phase of mitosis where chromosomes align at the cell's equator.
6.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
7.
FLASHCARD QUESTION
Front
What is the difference between active transport and passive transport?
Back
Active transport requires energy to move molecules against their concentration gradient, while passive transport does not require energy and moves molecules along their concentration gradient.
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