Umiejętności z tego działu sprawdza 56 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 37 z 57 arkuszy w bazie.
(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.
Compare and contrast cytoplasmic ribosomes in a liver cell with those in a bacterium.
Describe how to make a temporary microscope mount of a thin leek epidermis sample.
Distinguish the main wall material of a flowering-plant cell from that of a fungal hypha.
Outline how to prepare a temporary mount of a thin leek epidermis sample.
The superimposed scales calibrate an eyepiece graticule. A young epidermal cell spans 65 graticule divisions at this magnification. Calculate its actual length in µm.
Common cellular features coexist with the diversity produced by evolution. (a) Describe the roles of components shared across cellular organisms. (b) Discuss how separate populations can become distinct species. (c) Outline key features of the genetic code.
Cell organization enables specialized reactions, and life cycles transmit inherited information. (a) Outline three structural differences between eukaryotic and prokaryotic cells. (b) Outline advantages of dividing a cell into compartments. (c) Explain sexual…
A researcher freezes a cell sample and splits membranes before electron imaging. Which feature is this technique particularly useful for examining? A. The nucleotide sequence of a chromosome B. The distribution of structures embedded within the lipid bilayer…
A typical yeast cell belongs to the fungi. Which combination describes its structures? A. Cell wall and nucleus present; chloroplast absent B. Cell wall absent; nucleus and chloroplast present C. Nucleus absent; chloroplast present D. Cell wall, nucleus and…
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