Distinguish organelles from other cellular structures and explain how cell fractionation enables their investigation.
Tę umiejętność sprawdza 8 zadań wzorowanych na arkuszach IB z lat 2023–2026.
(ii) State a function of a mitochondrion in an animal cell. (iii) A microscope image has a magnification of 30 000×. Use the calibrated ruler beneath its scale bar to calculate the actual distance represented by the bar in µm.
Which structure is a functional cell organelle? A. The cellulose wall outside a plant cell B. A ribosome assembling a polypeptide C. The fluid cytosol as a whole D. A single actin filament in the cytoskeleton
Which list consists entirely of cell organelles? A. Cell wall, chromosome and cellulose fibre B. Ribosome, lysosome and Golgi apparatus C. Microtubule, plasma membrane and cell wall D. Collagen fibre, nucleus and chitin sheet
Deduce a possible identity for I, giving a visible reason.
Which structure is a discrete intracellular organelle? A. Cellulose cell wall B. Golgi apparatus C. Cytosol D. Extracellular collagen fibre
(i) State one organelle characteristic of plant cells but absent from typical animal cells. (ii) State one organelle present in both prokaryotic and eukaryotic cells.
Which feature is characteristic of eukaryotic organization compared with a typical bacterial cell? A. A plasma membrane surrounding cytoplasm B. Ribosomes used to make proteins C. Membrane-bound internal compartments such as a nucleus D. DNA containing the…
A gland cell secretes a protein into a duct. Its main organelles are shown. Explain how three of the visible organelles support this function.
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