Practice Exam: Modules 1.1 & 1.2

Which of the following is NOT a characteristic shared by all living organisms?

• Ability to maintain a constant internal environment

• Ability to reproduce

• Presence of a nucleus

• Ability to acquire and use energy

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NGSS.HS-LS1-4

NGSS.HS-LS1-5

The hierarchical organization of life follows which order (smallest to largest)?

• Molecule → Organelle → Cell → Tissue → Organ → Organism

• Atom → Molecule → Organ → Tissue → Cell → Organism

• Cell → Molecule → Organism → Population → Ecosystem

• Molecule → Organelle → Organism → Population → Community

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NGSS.HS-LS1-2

What is an emergent property?

• A property that arises at a specific level of biological organization due to interactions among components

• A property found only in multicellular organisms

• A property determined solely by genetic makeup

• A property unique to eukaryotic cells

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NGSS.HS-LS2-6

Which of the following is a key difference between prokaryotic and eukaryotic cells?

• Only prokaryotic cells contain DNA

• Eukaryotic cells have membrane-bound organelles, whereas prokaryotic cells do not

• Only eukaryotic cells have a plasma membrane

• Prokaryotic cells have larger and more complex genomes

The subatomic particles that make up an atom include:

• Protons, neutrons, and ions

• Electrons, molecules, and neutrons

• Protons, neutrons, and electrons

• Atoms, molecules, and compounds

What is the atomic number of an element?

• The number of neutrons

• The number of protons

• The number of electrons and neutrons combined

• The atomic mass divided by two

The chemical bonds that hold water molecules together are called:

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

• Van der Waals interactions

Which property of water allows insects to walk on its surface?

• High heat of vaporization

• High surface tension due to cohesion

• High specific heat

• Universal solvent properties

What happens when an acid is added to a solution?

• The pH decreases

• The pH increases

• The concentration of OH⁻ increases

• The solution becomes more neutral

What is the function of buffers in biological systems?

• To completely neutralize strong acids and bases

• To maintain pH stability by accepting or donating hydrogen ions

• To catalyze chemical reactions

• To speed up the movement of water molecules

Tags

NGSS.HS-LS1-3