AQA GCSE COMBINED SCIENCE BIOLOGY EXAMINATION PREP STUDY GUIDE LATEST UPDATED PRACTICE SOLUTION VERIFIED 100 PERCENT

AQA GCSE COMBINED SCIENCE BIOLOGY
EXAMINATION PREP STUDY GUIDE LATEST
UPDATED PRACTICE SOLUTION VERIFIED 100
PERCENT


◉ eukaryotic cell. Answer: A cell with a nucleus and other
membrane-bound organelles. Examples include animal and plant
cells.


◉ prokaryotic cell. Answer: A cell without a nucleus or membrane-
bound organelles. Examples include bacteria.


◉ main organelles in an animal cell. Answer: Nucleus, cell
membrane, cytoplasm, mitochondria, ribosomes.


◉ additional organelles in plant cells. Answer: Chloroplasts, cell wall,
permanent vacuole (in addition to organelles found in animal cells).


◉ function of the nucleus. Answer: Contains genetic material (DNA)
and controls the cell's activities.


◉ function of mitochondria. Answer: Site of aerobic respiration,
where energy is released from glucose.

, ◉ function of chloroplasts. Answer: Site of photosynthesis, where
light energy is used to make glucose.


◉ function of the cell membrane. Answer: Controls what substances
enter and leave the cell (selectively permeable).


◉ function of ribosomes. Answer: Site of protein synthesis.


◉ function of the cell wall. Answer: Provides structural support and
protection for the cell.


◉ function of the permanent vacuole. Answer: Contains cell sap to
help maintain turgor pressure.


◉ stem cell. Answer: An undifferentiated cell that can develop into
many different cell types.


◉ differentiation. Answer: The process where cells develop to
become specialized for specific functions.


◉ diffusion. Answer: The movement of particles from an area of
higher concentration to an area of lower concentration.


◉ osmosis. Answer: The diffusion of water molecules across a
partially permeable membrane from a region of higher water
concentration to a region of lower water concentration.