Biology Chapter 1-3: Cell Structure,
Chemistry, and Molecules Exam
Questions With Complete Solutions
/.Biology - Answer-✅The scientific study of life
/.Levels of organization - Answer-✅Biosphere → Ecosystem → Community →
Population → Organism → Organ system → Organ → Tissue → Cell → Organelle →
Molecule → Atom
/.Smallest unit of life - Answer-✅Cell
/.Prokaryote - Answer-✅Simple cell with no nucleus or membrane-bound organelles
/.Eukaryote - Answer-✅Cell with a nucleus and membrane-bound organelles
/.Unicellular organism - Answer-✅Organism made of one cell
/.Multicellular organism - Answer-✅Organism made of many specialized cells
/.Producer - Answer-✅Makes its own food (plants)
/.Consumer - Answer-✅Eats other organisms
/.Decomposer - Answer-✅Breaks down dead organisms (fungi, bacteria)
/.DNA structure - Answer-✅Double helix made of nucleotides
/.Function of DNA - Answer-✅Stores genetic information and controls cell activities
/.Three domains of life - Answer-✅Bacteria, Archaea, Eukarya
/.Domain Bacteria - Answer-✅Prokaryotic organisms
/.Domain Archaea - Answer-✅Prokaryotic organisms often in extreme environments
/.Domain Eukarya - Answer-✅Eukaryotic organisms
/.Kingdom Animalia - Answer-✅Consumers
, /.Kingdom Plantae - Answer-✅Producers
/.Kingdom Fungi - Answer-✅Decomposers
/.Kingdom Protista - Answer-✅Mixed group
/.Evolution - Answer-✅Change in populations over time
/.Natural selection - Answer-✅Organisms with favorable traits survive and reproduce
/.Scientist of natural selection - Answer-✅Charles Darwin
/.Scientific method - Answer-✅Observation → Question → Hypothesis → Experiment
→ Data → Conclusion
/.Independent variable - Answer-✅Variable that is changed
/.Dependent variable - Answer-✅Variable that is measured
/.Control group - Answer-✅Baseline for comparison
/.Scientific theory - Answer-✅Well-tested explanation supported by evidence
/.Atom - Answer-✅Smallest unit of matter
/.Element - Answer-✅Pure substance made of one type of atom
/.Atomic number - Answer-✅Number of protons
/.Mass number - Answer-✅Protons + neutrons
/.Proton charge - Answer-✅Positive
/.Neutron charge - Answer-✅Neutral
/.Electron charge - Answer-✅Negative
/.Isotope - Answer-✅Same element, different number of neutrons
/.Chemical bond - Answer-✅Attraction holding atoms together
/.Covalent bond - Answer-✅Electrons are shared
Chemistry, and Molecules Exam
Questions With Complete Solutions
/.Biology - Answer-✅The scientific study of life
/.Levels of organization - Answer-✅Biosphere → Ecosystem → Community →
Population → Organism → Organ system → Organ → Tissue → Cell → Organelle →
Molecule → Atom
/.Smallest unit of life - Answer-✅Cell
/.Prokaryote - Answer-✅Simple cell with no nucleus or membrane-bound organelles
/.Eukaryote - Answer-✅Cell with a nucleus and membrane-bound organelles
/.Unicellular organism - Answer-✅Organism made of one cell
/.Multicellular organism - Answer-✅Organism made of many specialized cells
/.Producer - Answer-✅Makes its own food (plants)
/.Consumer - Answer-✅Eats other organisms
/.Decomposer - Answer-✅Breaks down dead organisms (fungi, bacteria)
/.DNA structure - Answer-✅Double helix made of nucleotides
/.Function of DNA - Answer-✅Stores genetic information and controls cell activities
/.Three domains of life - Answer-✅Bacteria, Archaea, Eukarya
/.Domain Bacteria - Answer-✅Prokaryotic organisms
/.Domain Archaea - Answer-✅Prokaryotic organisms often in extreme environments
/.Domain Eukarya - Answer-✅Eukaryotic organisms
/.Kingdom Animalia - Answer-✅Consumers
, /.Kingdom Plantae - Answer-✅Producers
/.Kingdom Fungi - Answer-✅Decomposers
/.Kingdom Protista - Answer-✅Mixed group
/.Evolution - Answer-✅Change in populations over time
/.Natural selection - Answer-✅Organisms with favorable traits survive and reproduce
/.Scientist of natural selection - Answer-✅Charles Darwin
/.Scientific method - Answer-✅Observation → Question → Hypothesis → Experiment
→ Data → Conclusion
/.Independent variable - Answer-✅Variable that is changed
/.Dependent variable - Answer-✅Variable that is measured
/.Control group - Answer-✅Baseline for comparison
/.Scientific theory - Answer-✅Well-tested explanation supported by evidence
/.Atom - Answer-✅Smallest unit of matter
/.Element - Answer-✅Pure substance made of one type of atom
/.Atomic number - Answer-✅Number of protons
/.Mass number - Answer-✅Protons + neutrons
/.Proton charge - Answer-✅Positive
/.Neutron charge - Answer-✅Neutral
/.Electron charge - Answer-✅Negative
/.Isotope - Answer-✅Same element, different number of neutrons
/.Chemical bond - Answer-✅Attraction holding atoms together
/.Covalent bond - Answer-✅Electrons are shared
