Explain how alternating glucose units, straight chains and hydrogen bonding give cellulose mechanical strength.
Tę umiejętność sprawdza 10 zadań wzorowanych na arkuszach IB z lat 2023–2025.
A plant cell deposits cellulose microfibrils outside its plasma membrane. What is their principal contribution? A. They catalyse respiration in the mitochondria B. They store the cell’s genetic information C. They resist stretching and reinforce the cell wall…
A cell-biology course connects carbohydrate chemistry with energy transfer. (a) Explain how carbohydrate structures relate to cellular properties and functions, using named examples. (b) Outline diverse cellular uses of ATP, giving examples. (c) Distinguish…
Which comparison correctly connects glucose monomers to the architecture of the plant polymers they form? A. β-glucose forms the helical regions of starch; α-glucose forms straight cellulose chains B. α-glucose forms cellulose branches; β-glucose forms…
(a) Describe the assembly of cellulose from monosaccharides. (b) Outline how rising greenhouse-gas concentrations threaten coral reefs. (c) Explain the incorporation of carbon dioxide into organic compounds in the light-independent reactions.
Which combination explains how cellulose can help support water movement along plant cell walls? A. It must dissolve completely before water can touch it B. It repels every water molecule because it contains no polar groups C. It converts water into glucose…
Which Haworth structure represents beta-D-glucose? A. Structure A B. Structure B C. Structure C D. Structure D
Cellulose is a major component of plant cell walls. Describe the molecular structure of cellulose.
A model epidermal-cell sample is placed in pure water. Its mean internal hydrostatic pressure reaches 280 kPa while external atmospheric pressure is 100 kPa. Zadanie 5 b. (i) Outline how the higher pressure develops inside the cells. (ii) State why cellulose…
Cellulose is a major component of plant cell walls. Describe the molecular structure of cellulose.
A model epidermal-cell sample is placed in pure water. Its mean internal hydrostatic pressure reaches 280 kPa while external atmospheric pressure is 100 kPa. Zadanie 5 b. (i) Outline how the higher pressure develops inside the cells. (ii) State why cellulose…
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