Biology Concepts and Cell Functions

What is a model in the context of biology?

• A detailed representation of a cell

• A simplified representation of reality that describes or explains something in the world in a workable and usable way

• A complex theory that cannot be tested

• A random guess about biological processes

Which of the following best describes a theory?

• A random observation

• A model that explains a set of observations

• A law that predicts future events

• A hypothesis that cannot be tested

What is the main difference between eukaryotes and prokaryotes?

• Eukaryotes have a cell wall, prokaryotes do not

• Eukaryotes have membrane-surrounded organelles, prokaryotes do not

• Prokaryotes have a nucleus, eukaryotes do not

• Prokaryotes are multicellular, eukaryotes are unicellular

What happens to a cell in a hypertonic solution?

• The cell swells

• The cell shrinks

• The cell remains the same size

• The cell bursts

Which process involves the movement of molecules from an area of high concentration to an area of low concentration without energy?

• Active transport

• Simple diffusion

• Osmosis

• Facilitated diffusion

What is the role of ribosomes in a cell?

• They produce energy

• They make proteins

• They digest food

• They store genetic information

What is the function of the Golgi apparatus?

• It produces ATP

• It packages substances into vesicles for export

• It synthesizes lipids

• It breaks down waste materials

Which of the following describes the process of transcription?

• DNA is converted into RNA

• RNA is converted into protein

• Proteins are synthesized from amino acids

• Lipids are synthesized from fatty acids

What is the primary function of mitochondria in the cell?

• To synthesize proteins

• To conduct photosynthesis

• To generate energy through cellular respiration

• To store genetic information

Which of the following is true about passive transport?

• It requires energy

• It moves molecules from low to high concentration

• It includes osmosis and facilitated diffusion

• It only occurs in prokaryotic cells