
Bio Sem 1 Exam Review
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is chemical energy?
Back
Chemical energy is the energy stored in the bonds of chemical compounds, allowing the energy to be transported around the cell. Energy is the ability to do work and comes in various types such as light, mechanical, and chemical.
2.
FLASHCARD QUESTION
Front
What happens to dye droplets in a beaker?
Back
The dye droplets spread out from an area of high concentration to an area of lower concentration until they are evenly distributed throughout the beaker.
3.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is passive transport that occurs with the help of proteins. It involves two types of proteins: channel proteins, which allow charged or larger molecules to flow through the membrane, and carrier proteins, which change shape to transport specific molecules across the membrane.
4.
FLASHCARD QUESTION
Front
What is the active site of an enzyme?
Back
The active site of an enzyme is the region where the substrate attaches, allowing bonds to be formed or broken to create a different molecule.
5.
FLASHCARD QUESTION
Front
In which direction does water move in a hypertonic solution?
Back
Water moves out of the cell when it is placed in a hypertonic solution.
6.
FLASHCARD QUESTION
Front
Define passive transport.
Back
Passive transport is the movement of molecules across a cell membrane without the use of energy, relying on concentration gradients.
7.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
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