BIOL 100 Test 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Define and explain what is science and what is Biology. - CORRECT ANSWER -
Science-A way of understanding the natural world through observation and experimentation.
Biology-The scientific study of life and living organisms.
• Define and Explain the seven characteristics of life - CORRECT ANSWER - 1. Cells
2. Reproduction
3. Metabolism
4. Homeostasis
5. Heredity
6. Response to stimuli
7. Growth and development
Rank the levels of the organization of life - CORRECT ANSWER - (Simple to Complex)
Atom → Molecule → Organelle → Cell → Tissue → Organ → Organ system → Organism →
Population → Community → Ecosystem → Biosphere
Outline the conditions required and steps involved in the biogenesis model of the origin of life -
CORRECT ANSWER - Conditions: Water, energy, organic molecules
Steps: Organic molecules form → macromolecules → protocells → self-replicating molecule
• Highlight the differences and similarities between Archaea a nd
Bacteria - CORRECT ANSWER - Similar: Prokaryotic, unicellular, asexual
Different: Archaea live in extreme environments, have different cell walls
• Define bacteria and differentiate between helpful and harmful bacteria - CORRECT
ANSWER - Microscopic prokaryotic organisms.
, Helpful bacteria: Aid digestion, decompose waste
Harmful bacteria: Cause illness (e.g., strep)
Highlight the differences and similarities between unicellular protists and prokaryotes -
CORRECT ANSWER - Similar: Unicellular
Different: Protists are eukaryotic (have a nucleus), prokaryotes are not
• Discuss how fungi affect our daily lives - CORRECT ANSWER - Make bread and
antibiotics, decompose waste, but can also cause infections.
Compare and contrast the biology of algae and plants - CORRECT ANSWER - Similar:
Photosynthetic, cell walls
Different: Algae often unicellular, no roots/stems; plants are multicellular with vascular tissues
Identify the major characteristics of animals and the features used to distinguish animal groups -
CORRECT ANSWER - Multicellular, eukaryotic, no cell walls, heterotrophic, usually
mobile, reproduce sexually
Define ecology and ecosystem - CORRECT ANSWER - Ecology-The study of how
organisms interact with each other and their environment.
Ecosystem-A system of living organisms and their physical (non-living) environment.
Distinguish between biotic and abiotic factors and provide examples of abiotic factors that affect
life. - CORRECT ANSWER - Biotic: Living (plants, animals)
Abiotic: Non-living (sunlight, water, soil)
Define the chemical bonds located between oxygen and hydrogen atoms that form water
molecules and explain why that specific bond can occur with water molecules. - CORRECT
ANSWER - Covalent bonds between H and O inside a water molecule.
Because water is polar, with a positive and negative end.
Exam Questions and CORRECT Answers
Define and explain what is science and what is Biology. - CORRECT ANSWER -
Science-A way of understanding the natural world through observation and experimentation.
Biology-The scientific study of life and living organisms.
• Define and Explain the seven characteristics of life - CORRECT ANSWER - 1. Cells
2. Reproduction
3. Metabolism
4. Homeostasis
5. Heredity
6. Response to stimuli
7. Growth and development
Rank the levels of the organization of life - CORRECT ANSWER - (Simple to Complex)
Atom → Molecule → Organelle → Cell → Tissue → Organ → Organ system → Organism →
Population → Community → Ecosystem → Biosphere
Outline the conditions required and steps involved in the biogenesis model of the origin of life -
CORRECT ANSWER - Conditions: Water, energy, organic molecules
Steps: Organic molecules form → macromolecules → protocells → self-replicating molecule
• Highlight the differences and similarities between Archaea a nd
Bacteria - CORRECT ANSWER - Similar: Prokaryotic, unicellular, asexual
Different: Archaea live in extreme environments, have different cell walls
• Define bacteria and differentiate between helpful and harmful bacteria - CORRECT
ANSWER - Microscopic prokaryotic organisms.
, Helpful bacteria: Aid digestion, decompose waste
Harmful bacteria: Cause illness (e.g., strep)
Highlight the differences and similarities between unicellular protists and prokaryotes -
CORRECT ANSWER - Similar: Unicellular
Different: Protists are eukaryotic (have a nucleus), prokaryotes are not
• Discuss how fungi affect our daily lives - CORRECT ANSWER - Make bread and
antibiotics, decompose waste, but can also cause infections.
Compare and contrast the biology of algae and plants - CORRECT ANSWER - Similar:
Photosynthetic, cell walls
Different: Algae often unicellular, no roots/stems; plants are multicellular with vascular tissues
Identify the major characteristics of animals and the features used to distinguish animal groups -
CORRECT ANSWER - Multicellular, eukaryotic, no cell walls, heterotrophic, usually
mobile, reproduce sexually
Define ecology and ecosystem - CORRECT ANSWER - Ecology-The study of how
organisms interact with each other and their environment.
Ecosystem-A system of living organisms and their physical (non-living) environment.
Distinguish between biotic and abiotic factors and provide examples of abiotic factors that affect
life. - CORRECT ANSWER - Biotic: Living (plants, animals)
Abiotic: Non-living (sunlight, water, soil)
Define the chemical bonds located between oxygen and hydrogen atoms that form water
molecules and explain why that specific bond can occur with water molecules. - CORRECT
ANSWER - Covalent bonds between H and O inside a water molecule.
Because water is polar, with a positive and negative end.
