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BIO 253 EXAM 1 2026 FINAL PAPER COMPLETE QUESTIONS AND ANSWERS FULL SOLUTION

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BIO 253 EXAM 1 2026 FINAL PAPER COMPLETE QUESTIONS AND ANSWERS FULL SOLUTION

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BIO 253 EXAM 1 2026 FINAL PAPER COMPLETE
QUESTIONS AND ANSWERS FULL SOLUTION

◉ Ionic Bond.
Answer: Electrical attraction between oppositely charged ions.


◉ Covalent Bond.
Answer: Sharing of electrons between atoms.


◉ Hydrogen Bond.
Answer: Weak bond between polar molecules.


◉ pH Scale.
Answer: Measures acidity or alkalinity of a solution.


◉ Acids.
Answer: Substances that donate protons in solution.


◉ Bases.
Answer: Substances that accept protons in solution.

, ◉ Carbohydrates.
Answer: Organic compounds primarily used for energy.


◉ Lipids.
Answer: Nonpolar molecules, essential for energy storage.


◉ Proteins.
Answer: Polymers of amino acids performing various functions.


◉ Nucleic Acids.
Answer: Molecules made of nucleotides; DNA and RNA.


◉ Cell Membrane.
Answer: Barrier made of lipid bilayer and proteins.


◉ Cytoplasm.
Answer: Fluid within cells containing organelles.


◉ Mitochondria.
Answer: Organelles that produce ATP through respiration.


◉ Microvilli.

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