Cellular Biology
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PeterPan
Interested in JM Barrie and other children’s writers
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BIOLOGY
Cellular Biology
Adenosine Triphosphate (ATP)
The molecule that powers life’s every move is recycled billions of times each second inside your cells
3 days ago
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Why is ATP considered the 'molecular unit of currency' for energy in cells?
Because it stores large amounts of energy long-term like fat or glycogen
Because it provides immediate, usable energy by releasing phosphate bonds that cells can harness for work
Because it is only found in muscle cells and powers muscle contraction exclusively
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Johnbarrow
John from Bartow
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BIOCHEMISTRY
Cellular Biology
Antioxidants
Invisible defenders extend life of cells and everyday products by halting molecular decay
6 days ago
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Why are antioxidants crucial in both biological systems and industrial applications?
Because they accelerate oxidation to strengthen materials and cells.
Because they prevent oxidative damage by neutralizing free radicals, protecting cells and preserving materials.
Because they create free radicals that help in cellular signaling and food preservation.
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FordMotor
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BIOLOGY
Cellular Biology
Adenosine Triphosphate (ATP)
The molecule that pays for every move your body makes
7 days ago
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Why is ATP often called the 'molecular unit of currency' in cells?
Because it is the only molecule that stores genetic information
Because it is a waste product produced by cells
Because it stores and transfers energy needed for cellular processes
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Steeeve
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BIOLOGY
Cellular Biology
Oxidative Stress
The same molecules that sustain life can also silently sabotage our cells when unbalanced
7 days ago
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What is the primary cause of oxidative stress in cells?
An imbalance between reactive oxygen species production and the cell's ability to detoxify them
An excess of antioxidants neutralizing all reactive molecules
A complete absence of reactive oxygen species in cellular metabolism
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Perfect_Peter_John_
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BIOLOGY
Cellular Biology
Myosin
Myosin’s energy battle powers everything from muscle flexes to cell division
8 days ago
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What is the primary trade-off myosin proteins manage in their cellular functions?
Balancing efficient ATP energy use with generating mechanical force for movement
Maximizing ATP production without regard to mechanical output
Using mechanical force to create ATP energy
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PeterPan
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BIOLOGY
Cellular Biology
Mechanotransduction
Cells translate physical forces into electrical signals shaping our senses and health
9 days ago
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Which of the following best explains why mechanotransduction is crucial for hearing?
Because chemical signals in the ear directly produce sound perception without mechanical involvement
Because hair cells convert mechanical sound waves into electrical signals the brain can interpret
Because hearing depends solely on electrical signals generated independently of mechanical stimuli
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Stevex
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BIOLOGY
Cellular Biology
Metabolism
Cells orchestrate thousands of chemical reactions every second to sustain life’s energy flow
9 days ago
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Which of the following best explains why metabolism is essential for living organisms?
It only breaks down food without producing any useful molecules.
It refers solely to the digestion of food in the stomach.
It converts food into energy and building blocks necessary for growth and maintenance.
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Perfect_Peter_John_
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BIOLOGY
Cellular Biology
Biological Tissue
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Tissues orchestrate cellular teamwork that powers every organ’s unique function
11 days ago
Biological tissue isn’t just a random cluster of cells; it’s a highly organized community where similar cells and their surrounding matrix team up to perform specific, vital functions. This collaboration is so precise that tissues...
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Stevex
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BIOLOGY
Cellular Biology
Biological Tissue
The hidden teamwork of cells in tissues shapes every organ's function and survival
13 days ago
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Why is the extracellular matrix crucial in biological tissues?
It provides structural support and biochemical signals essential for tissue function.
It serves only as a storage area for nutrients within tissues.
It is unnecessary because cells can function independently without it.
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Johnbarrow
John from Bartow
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BIOCHEMISTRY
Cellular Biology
Antioxidants
The invisible war inside cells between free radicals and antioxidants shapes aging and disease
13 days ago
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What is the primary role of antioxidants in biological systems?
To accelerate oxidation processes for energy production
To neutralize free radicals and prevent oxidative damage
To promote free radical formation for immune defense
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Perfect_Peter_John_
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BIOLOGY
Cellular Biology
Adenosine Triphosphate (ATP)
The molecule that powers every move you make is also a battleground of energy conflict inside your cells
8 Feb 2026
0
Why is ATP often called the 'molecular unit of currency' in cells?
Because it stores and transfers energy needed for cellular processes
Because it is the main structural component of cell membranes
Because it is only found in muscle cells for contraction
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Stevek113
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BIOLOGY
Cellular Biology
Cellular Respiration
Cellular respiration powers life by converting food into energy using oxygen and mitochondria
7 Feb 2026
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What is the primary role of oxygen in cellular respiration?
Oxygen directly breaks down glucose molecules to release energy.
Oxygen acts as the final electron acceptor in the electron transport chain.
Oxygen is only used to remove waste products and does not participate in energy production.
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PistonHeads
Cars, cars and cars
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BIOLOGY
Cellular Biology
Metabolism
Metabolism orchestrates thousands of chemical reactions every second to sustain life’s delicate balance
5 Feb 2026
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Which of the following best describes the primary role of metabolism in living organisms?
Storing genetic information for inheritance
Producing hormones exclusively for growth regulation
Converting food into usable energy and building blocks for cellular functions
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Stevek113
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BIOLOGY
Cellular Biology
Adenosine Triphosphate (ATP)
ATP acts as the universal energy currency powering all known life forms' cellular activities
4 Feb 2026
0
What happens to ATP when it releases energy to power cellular processes?
It gains an extra phosphate group and becomes ATP2.
It breaks down into glucose and oxygen.
It loses a phosphate group and becomes ADP.
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Steeeve
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BIOLOGY
Cellular Biology
Cellular Respiration
Cellular respiration efficiently converts nutrients into usable energy through oxygen-driven processes
3 Feb 2026
0
Which stage of cellular respiration directly produces the majority of ATP molecules?
Oxidative phosphorylation
Glycolysis
Citric acid cycle
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