EXAM PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ Prokaryotic cell . Answer: Cell with a single circular chromosome
and free-floating nuclear material.
◉ Organelles . Answer: Membrane-bounded cellular components in
eukaryotic cells.
◉ Respiration . Answer: Cellular function of absorbing oxygen and
using it to transform nutrients to energy.
◉ Nucleolus . Answer: Region of the cell containing genetic material,
ribonucleic acid, and DNA-binding proteins.
◉ Integral membrane proteins . Answer: Proteins that float freely in the
fluid lipid bilayer of the cell membrane.
◉ Ligands . Answer: Specific molecules that can bind with receptors on
the cell membrane.
, ◉ Fibronectin . Answer: Protein associated with cancerous cells,
allowing metastasis.
◉ Cell junction . Answer: Structure that holds cells together and permits
molecules to pass from cell to cell.
◉ Paracrine signaling . Answer: Release of local chemical mediators
that are quickly taken up, destroyed, or immobilized.
◉ Substrate . Answer: Specific substance converted to a product of the
reaction by an enzyme.
◉ ATP . Answer: Energy source for muscle contraction.
◉ Citric acid cycle . Answer: Process that produces the most ATP
during cellular catabolism.
◉ Diffusion . Answer: Movement of solute molecules from an area of
greater concentration to an area of lesser concentration.
◉ Electrolytes . Answer: Electrically charged molecules.
◉ Osmolality . Answer: Measure of the concentration of molecules per
weight of water.