1. What is matter? A) Anything that has mass and occupies space B) Smallest part of an element C) A type of chemical bond D) A unit of energy 2. Which of the following is an elemen... 1. What is matter? A) Anything that has mass and occupies space B) Smallest part of an element C) A type of chemical bond D) A unit of energy 2. Which of the following is an element essential for life? A) Helium B) Carbon C) Neon D) Argon 3. What are atoms made of? A) Protons, neutrons, and electrons B) Molecules and compounds C) Cells and organelles D) Elements and isotopes 4. Which of the following is a molecule? A) CO₂ B) H₂O C) NaCl D) O₂ 5. What is the basic unit of life? A) Atom B) Molecule C) Cell D) Organ 6. Which organelle is known as the powerhouse of the cell? A) Nucleus B) Mitochondria C) Ribosome D) Golgi apparatus 7. What does the atomic number represent? A) Number of neutrons B) Number of protons C) Number of electrons D) Atomic mass 8. What are isotopes? A) Variants of elements with different neutron numbers B) Elements with the same number of protons C) Compounds with covalent bonds D) Atoms with the same atomic mass 9. What type of bond involves the sharing of electrons? A) Ionic bond B) Covalent bond C) Hydrogen bond D) Metallic bond 10. What type of bond involves the transfer of electrons? A) Ionic bond B) Covalent bond C) Hydrogen bond D) Metallic bond 11. What is cohesion? A) Attraction between water molecules B) Attraction between water and other substances C) Water's resistance to temperature changes D) Water's ability to dissolve substances 12. Why is ice less dense than liquid water? A) Because of water's polarity B) Because of hydrogen bonding C) Because of cohesion D) Because of adhesion 13. What does hydrophilic mean? A) Water-loving B) Water-fearing C) Water-resistant D) Water-repellent 14. What does hydrophobic mean? A) Water-loving B) Water-fearing C) Water-resistant D) Water-repellent 15. Which biomolecule provides energy and structural support? A) Carbohydrates B) Lipids C) Proteins D) Nucleic acids 16. Which biomolecule stores and transmits genetic information? A) Carbohydrates B) Lipids C) Proteins D) Nucleic acids 17. What are monomers? A) Large molecules made from polymers B) Building blocks of biomolecules C) Energy sources D) Genetic material 18. Which of the following is a polymer? A) Glucose B) Amino acids C) Starch D) Nucleotides 19. Why is carbon versatile? A) It forms four covalent bonds B) It is a metal C) It is a gas at room temperature D) It is an isotope 20. Why is carbon considered the backbone of life? A) It is central to all biological molecules B) It is the most abundant element C) It is a noble gas D) It is a metal
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The questions are asking for definitions and characteristics related to basic concepts in biology and chemistry, including matter, elements, atoms, molecules, bonds, properties of water, biomolecules, and the role of carbon in life.
Answer
1. A 2. B 3. A 4. A 5. C 6. B 7. B 8. A 9. B 10. A 11. A 12. B 13. A 14. B 15. A 16. D 17. B 18. C 19. A 20. A
- A) Anything that has mass and occupies space 2. B) Carbon 3. A) Protons, neutrons, and electrons 4. A) CO₂ B) H₂O C) NaCl D) O₂ 5. C) Cell 6. B) Mitochondria 7. B) Number of protons 8. A) Variants of elements with different neutron numbers 9. B) Covalent bond 10. A) Ionic bond 11. A) Attraction between water molecules 12. B) Because of hydrogen bonding 13. A) Water-loving 14. B) Water-fearing 15. A) Carbohydrates 16. D) Nucleic acids 17. B) Building blocks of biomolecules 18. C) Starch 19. A) It forms four covalent bonds 20. A) It is central to all biological molecules
Answer for screen readers
- A) Anything that has mass and occupies space 2. B) Carbon 3. A) Protons, neutrons, and electrons 4. A) CO₂ B) H₂O C) NaCl D) O₂ 5. C) Cell 6. B) Mitochondria 7. B) Number of protons 8. A) Variants of elements with different neutron numbers 9. B) Covalent bond 10. A) Ionic bond 11. A) Attraction between water molecules 12. B) Because of hydrogen bonding 13. A) Water-loving 14. B) Water-fearing 15. A) Carbohydrates 16. D) Nucleic acids 17. B) Building blocks of biomolecules 18. C) Starch 19. A) It forms four covalent bonds 20. A) It is central to all biological molecules
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These questions cover fundamental concepts in biology and chemistry such as definitions of matter, basic chemistry of life, biological molecules, and the properties of water.
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Care should be taken to accurately interpret scientific terminologies as they can be commonly confused (e.g., atom vs molecule, ionic vs covalent bonds).
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