Pathophysiology and Cellular
Regulation Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What is diffusion?
✔✔Movement of substances from high to low concentration
What is osmosis?
✔✔Movement of water across a membrane
What is active transport?
✔✔Movement of substances using energy
What is a receptor?
✔✔A cell structure that binds to signals
What is a ligand?
✔✔A substance that binds to a receptor
What is cell signalling?
✔✔Communication between cells
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,What is apoptosis?
✔✔Programmed cell death
What is necrosis?
✔✔Uncontrolled cell death
What is a free radical?
✔✔An unstable molecule that damages cells
What is inflammation?
✔✔The body’s response to injury
What causes cellular injury?
✔✔Lack of oxygen, toxins, or trauma
What is hypoxia?
✔✔Low oxygen supply to cells
What is pathophysiology?
✔✔The study of how diseases change normal body function
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,What is a cell?
✔✔The basic structural and functional unit of life
What controls the activities of the cell?
✔✔The nucleus
What is cellular regulation?
✔✔The control of cell activities to maintain balance
Why is homeostasis important?
✔✔It keeps the internal environment stable
What is metabolism?
✔✔All chemical reactions in the body
What is the role of enzymes?
✔✔To speed up chemical reactions
What is ATP?
✔✔The main energy source for cells
What does the cell membrane do?
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, ✔✔Controls what enters and leaves the cell
What is ischemia?
✔✔Reduced blood flow
What happens when cells lack oxygen?
✔✔They produce less energy
What is oxidative stress?
✔✔Damage caused by excess free radicals
What is cell adaptation?
✔✔Changes cells make to survive stress
What is hypertrophy?
✔✔Increase in cell size
What is hyperplasia?
✔✔Increase in number of cells
What is atrophy?
✔✔Decrease in cell size
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