Cell Transport Mechanisms and Functions

Which of the following cellular components are present in both prokaryotic and eukaryotic cells?

• Genetic material, cytoplasm, and ribosomes

• Membrane-bound organelles and genetic material

• Cytoplasm, ribosomes, and a nucleus

• Genetic material, cell wall, and mitochondria

What is the primary role of the cell membrane in maintaining cellular balance?

• Producing energy for the cell

• Storing genetic information

• Controlling the movement of substances into and out of the cell

• Synthesizing proteins

Which characteristic allows small, non-polar molecules like oxygen and carbon dioxide to easily cross the cell membrane?

• They are actively transported by proteins

• They move against their concentration gradient

• They can directly pass through the phospholipid bilayer

• They require aquaporins for passage

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What is the defining feature of active transport that differentiates it from passive transport?

• It moves molecules with the concentration gradient

• It does not require the use of transport proteins

• It requires energy, typically ATP, to move molecules against their concentration gradient

• It only transports small, non-polar molecules