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100+ Free Saxony Abitur Biology Practice Questions

Saxony Abitur Biology (Biologie) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: Saxony Abitur Biology Exam

4 Aufgaben, 3 zu bearbeiten

Candidates are offered four Aufgaben and must complete three; exactly one of the three must include a fachpraktischer Anteil

VwV Abiturprüfung 2026, REVOSax; Musteraufgaben Biologie LK, schule.sachsen.de

300+15 / 255+15 min

LK/GK Gesamtarbeitszeit including Auswahlzeit, plus 15 minutes for the Aufgabe with fachpraktischem Anteil (VwV Abiturprüfung 2026)

VwV Abiturprüfung 2026, REVOSax

100 / 80 BE

BE scale applied in Leistungskursfach / Grundkursfach for Biologie, Chemie and Physik under VwV Abiturprüfung 2026

VwV Abiturprüfung 2026, REVOSax

IQB pool

Two of the four offered Aufgaben are taken unchanged from the nationwide IQB Abituraufgabenpool; further tasks are set in Sachsen

Musteraufgaben Biologie LK, schule.sachsen.de

22.04.2026

Written Biologie date in the 2026 main session; Nachprüfung 18 May 2026

schule.sachsen.de Gymnasium Prüfungskalender 2026

0–15 Punkte

Grading scale for each Prüfungsfach, from Note 1 (15–13 Punkte) to Note 6 (0 Punkte)

Oberstufen- und Abiturprüfungsverordnung (OAVO), Freistaat Sachsen

4 Inhaltsbereiche

KMK Bildungsstandards content areas: Leben und Energie, Informationsverarbeitung in Lebewesen, Lebewesen in ihrer Umwelt, Vielfalt des Lebens

Bildungsstandards im Fach Biologie für die Allgemeine Hochschulreife, KMK-Beschluss 18.06.2020

Free 100-question English-language MCQ study bank for Sachsen Abitur Biologie, mapped to KMK AHR Inhaltsbereiche and Saxon Lehrplan topics. Official exam: German materialgestützte Klausur, 4 Aufgaben / work 3, one with fachpraktischer Anteil, IQB pool tasks used; LK 300+15 min / GK 255+15 min (VwV 2026); written date 22.04.2026 (Nach 18.05.2026). Not an official-format simulation; no fee for regular school candidates.

Sample Saxony Abitur Biology Practice Questions

Try these sample questions to test your Saxony Abitur Biology exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to the KMK Inhaltsbereich 'Leben und Energie' emphasised in Saxon Abitur Biologie, which organelle is the main site of aerobic Zellatmung in eukaryotic cells?
A.Mitochondrium
B.Chloroplast
C.Ribosom
D.Zellkern
Explanation: Mitochondria house oxidative decarboxylation, the Tricarbonsäurezyklus and the Atmungskette, coupling electron transport to chemiosmotic ATP synthesis — the core of aerobic respiration taught under Leben und Energie.
2The Flüssig-Mosaik-Modell of the Biomembran, used across Saxon Lehrplan cell biology, describes membranes as
A.a rigid cellulose wall with fixed protein pores
B.a phospholipid bilayer with embedded proteins that can move laterally in a fluid lipid phase
C.a solid protein sheet without lipids
D.a triple layer of starch molecules
Explanation: The fluid mosaic model pictures phospholipids as a two-dimensional fluid in which integral and peripheral proteins float and diffuse laterally, enabling selective transport and signalling.
3Enzymes studied in fachpraktische Biologie tasks act primarily as
A.structural fibres that replace the cytoskeleton
B.carriers of hereditary information between generations
C.biological catalysts that lower activation energy of specific reactions without being consumed
D.pigments that absorb light in the thylakoid membrane
Explanation: Enzymes accelerate specific reactions by lowering activation energy and are regenerated at the end of the catalytic cycle — the principle behind Saxon temperature/pH enzyme experiments in the fachpraktischer Anteil.
4ATP functions in cells mainly as
A.the template from which mRNA is transcribed
B.the primary pigment of the Lichtreaktion
C.a structural component of the middle lamella
D.the universal short-term energy currency released when the terminal phosphate is hydrolysed
Explanation: Hydrolysis of ATP to ADP + Pi releases usable free energy coupled to endergonic processes such as active transport, biosynthesis and muscle contraction.
5Where does Glykolyse occur in a typical eukaryotic animal cell?
A.In the cytosol
B.In the mitochondrial matrix
C.On the inner mitochondrial membrane
D.Inside the nucleolus
Explanation: Glycolysis converts glucose to two pyruvate molecules in the cytosol, netting 2 ATP and 2 NADH before pyruvate enters the mitochondrion.
6In a Saxon fachpraktischer enzyme assay, activity typically collapses far above the temperature optimum because
A.heat always increases enzyme activity without limit
B.the protein denatures and the active site loses its functional three-dimensional shape
C.enzymes become permanently converted into DNA
D.substrate molecules freeze solid at high temperature
Explanation: Moderate warming speeds collisions up to an optimum; beyond that, thermal disruption of weak bonds denatures the enzyme, destroying catalytic geometry — a classic experimental outcome.
7Competitive enzyme inhibitors typically
A.permanently destroy the enzyme's primary amino-acid sequence at any concentration
B.increase Vmax without affecting substrate binding
C.bind the active site and can be overcome by raising substrate concentration
D.act only on DNA polymerase in the nucleus
Explanation: Competitive inhibitors resemble the substrate and occupy the active site; adding more substrate shifts binding toward productive ES complexes, restoring rate toward Vmax.
8The chemiosmotic mechanism of oxidative phosphorylation depends on
A.direct transfer of phosphate from glucose to ADP in the nucleus
B.light-driven splitting of water in the cytosol of animal cells
C.ribosomes polymerising ATP from amino acids
D.a proton gradient across the inner mitochondrial membrane driving ATP synthase
Explanation: Complexes of the Atmungskette pump H+ into the intermembrane space; protons flowing back through ATP synthase power ATP formation — chemiosmosis.
9Which statement correctly compares passive diffusion and active transport across a Biomembran?
A.Passive diffusion moves solutes down their electrochemical gradient without ATP; active transport moves solutes against a gradient and requires energy
B.Both always require ATP hydrolysis at every step
C.Active transport only moves water through aquaporins
D.Passive diffusion can only occur through nuclear pores
Explanation: Passive processes (simple/facilitated diffusion) follow gradients and need no metabolic energy input; active transporters couple energy (often ATP) to uphill transport.
10Lysosomes are best described as
A.the site of the Calvin cycle in animal cells
B.vesicles containing hydrolytic enzymes that digest macromolecules and worn organelles
C.stacks that glycosylate proteins for secretion only in bacteria
D.storage deposits of starch in plant vacuoles
Explanation: Lysosomes maintain an acidic lumen with acid hydrolases for autophagy and degradation of endocytosed material — a classic Kompartimentierung example.

About the Saxony Abitur Biology Practice Questions

Verified exam format metadata for Saxony Abitur Biology (Biologie) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.