Umiejętności z tego działu sprawdza 35 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 30 z 57 arkuszy w bazie.
Which observation supports the identification of a dividing cell as entering mitotic metaphase? A. Homologous chromosomes form paired bivalents B. Sister chromatids have already reached opposite poles C. Spindle microtubules position chromosomes towards the…
A developing animal cell divides its cytoplasm very unevenly, leaving almost all of it in one product. Which process normally includes this pattern? A. Production of two equivalent daughter skin cells B. Binary fission of an intestinal bacterium C. Formation…
Which event is shared by mitotic and meiotic nuclear division? A. Homologous chromosomes must pair as bivalents in both B. The chromosome number is halved in both C. Chromatin becomes more condensed through DNA packaging with histones D. DNA is replicated…
Which event creates different combinations of maternal and paternal chromosomes among gametes? A. Copying a chromosome before an ordinary mitotic division B. Equal partition of cytoplasm in a skin cell C. Independent orientation of homologous chromosome pairs…
Outline the role of histones in these eukaryotic chromosomes.
Biological function depends on coordinated structures and recurring processes. (a) Outline how chromosome behaviour in mitosis produces genetically equivalent cells. (b) Describe the production of mRNA in the nucleus. (c) Explain how arterial and venous…
Consider connections between biological processes at different levels of organization. (a) Outline how mitosis preserves hereditary information in new cells. (b) Describe the role of DNA variation in speciation. (c) Explain the genetic basis of inheritance…
Which event can occur in both mitosis and meiosis? A. A diploid chromosome number is halved in each daughter nucleus B. Homologous chromosomes form bivalents before the first division C. Exchange of chromosome segments is obligatory in every division D.…
Which event occurs during both mitosis and a complete meiotic division sequence? A. Homologous chromosomes pair as bivalents in every division B. Sister chromatids separate C. Crossing over is obligatory in mitosis D. Chromosome number doubles at each…
Describe reproduction of these yeast cells.
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