2026 Bio Exp SOL Review BIO.3abde

Which of the following is one of the three main principles of the cell theory?

• All cells have a nucleus

• All living organisms are made of one or more cells

• All cells contain chloroplasts

• All cells reproduce by mitosis

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SOL.BIO.3.a

Which of the following best describes a unicellular organism?

• An organism made up of many specialized cells

• An organism whose cells have no membrane-bound organelles

• An organism that consists of a single cell that carries out all life processes

• An organism that can only survive in water

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SOL.BIO.3.b

In a multicellular organism, which level of organization is formed when a group of similar cells work together to perform a specific function?

• Organ

• Tissue

• Organ system

• Organism

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SOL.BIO.3.b

What is the primary component of the cell membrane that gives it its flexible, fluid structure?

• Carbohydrate chains

• Phospholipid bilayer

• Protein channels

• Cholesterol crystals

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SOL.BIO.3.d

Which term describes the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration?

• Active transport

• Diffusion

• Osmosis

• Endocytosis

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SOL.BIO.3.d

Which of the following is an example of a specialized cell found in the human body?

• A water molecule

• A red blood cell

• A mitochondrion

• A ribosome

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SOL.BIO.3.e

A scientist discovers a new single-celled organism. She observes that it performs photosynthesis, reproduces, responds to stimuli, and excretes waste. How does this evidence support the cell theory?

• It shows that all cells must contain a nucleus to carry out life functions

• It demonstrates that a single cell can carry out all necessary life processes, supporting the idea that the cell is the basic unit of life

• It proves that multicellular organisms are more efficient than unicellular organisms

• It suggests that the organism does not follow the cell theory because it is too simple

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SOL.BIO.3.a

A cell is placed in a solution where the solute concentration outside the cell is higher than inside the cell. Which of the following will most likely occur?

• Water will move into the cell by osmosis, causing it to swell

• Water will move out of the cell by osmosis, causing it to shrink

• Solute will move into the cell by active transport, causing it to swell

• The cell membrane will dissolve because of the concentration difference

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SOL.BIO.3.d

What term describes the ability of the cell membrane to allow some substances to pass through while blocking others?

• Rigidity

• Selective permeability

• Active transport

• Facilitated diffusion

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SOL.BIO.3.d

Which of the following correctly describes the movement of molecules during passive transport?

• Molecules move from an area of low concentration to an area of high concentration using energy

• Molecules move from an area of high concentration to an area of low concentration without using energy

• Molecules move from an area of low concentration to an area of high concentration without using energy

• Molecules move randomly in both directions using cellular energy

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SOL.BIO.3.d