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100+ Free BW Abitur Biology Bilingual EN Practice Questions

Baden-Württemberg Abitur Biology Bilingual English (Biologie bilingual englisch; Internationales Abitur Baden-Württemberg pathway) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: BW Abitur Biology Bilingual EN Exam

English

Official written Biologie bilingual responses are expected in English

KM-BW Korrekturrichtlinien 2026, section IX

3 of 4

Typical written Biology task selection (four offered; three worked)

KM-BW Fächerlass 2026, Biologie

0–15

Notenpunkte scale after Bewertungseinheiten conversion

KM-BW Korrekturrichtlinien conversion tables

900

Maximum Gesamtqualifikation points (Kurs + Abiturprüfung)

KM-BW Abitur und Oberstufe

100

Original local English practice MCQs on this page (study aid only)

OpenExamPrep

Free 100-question English MCQ study bank for BW Abitur Biology bilingual (Internationales Abitur pathway). Official exam: English constructed-response/analysis (typically 3 of 4 tasks), 15-point scale, Gesamtqualifikation up to 900. Not an official format simulation; no separate statewide subject fee for regular school candidates.

Sample BW Abitur Biology Bilingual EN Practice Questions

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

1In a typical eukaryotic animal cell, where is most chromosomal DNA stored?
A.Ribosome
B.Nucleus
C.Lysosome
D.Centriole
Explanation: The nucleus houses the chromosomes of a typical eukaryotic animal cell and is the main site of DNA storage and transcription.
2What is the primary role of mitochondria in aerobic eukaryotic cells?
A.Synthesize most ATP via cellular respiration
B.Package secretory proteins
C.Digest foreign DNA only
D.Store starch as amyloplasts
Explanation: Mitochondria carry out key steps of aerobic respiration, including the citric acid cycle and oxidative phosphorylation, producing most cellular ATP.
3Why do phospholipids spontaneously form bilayers in water?
A.They have hydrophilic heads and hydrophobic tails
B.Both ends are equally hydrophilic
C.They covalently polymerize into rigid sheets
D.They contain cellulose microfibrils
Explanation: Phospholipids are amphipathic: polar heads interact with water while nonpolar fatty-acid tails face inward, stabilizing a bilayer.
4A plant cell is placed in a strongly hypertonic solution. What happens first by osmosis?
A.Water enters and turgor rises
B.Water leaves and the vacuole shrinks
C.Solute floods into the nucleus
D.The cell wall dissolves instantly
Explanation: Water moves from higher water potential inside the cell toward the more concentrated external solution, so the vacuole and protoplast shrink (plasmolysis risk).
5Which organelle is the main site of photosynthesis in green plant cells?
A.Chloroplast
B.Mitochondrion
C.Golgi apparatus
D.Peroxisome only
Explanation: Chloroplasts contain chlorophyll and thylakoid membranes where light reactions occur, making them the main photosynthetic organelles.
6What is the direct function of ribosomes?
A.Synthesize proteins from mRNA instructions
B.Pump blood through capillaries
C.Separate homologous chromosomes
D.Fix atmospheric N2 into ammonia
Explanation: Ribosomes translate mRNA codons and join amino acids into polypeptides.
7Which reactants are directly used in oxygenic photosynthesis?
A.Glucose and oxygen
B.Carbon dioxide and water
C.Lactate and ethanol
D.ATP and oxygen only as carbon sources
Explanation: Oxygenic photosynthesis uses CO2 and H2O (with light energy) to produce carbohydrate and O2.
8In aerobic respiration, where does oxygen act as the final electron acceptor?
A.Glycolysis
B.Calvin cycle
C.Electron transport chain
D.DNA replication
Explanation: Oxygen accepts electrons at the end of the mitochondrial electron transport chain and combines with protons to form water.
9What usually happens to enzyme activity far above the enzyme's optimum temperature?
A.The active site may denature and activity falls
B.The enzyme becomes a carbohydrate
C.Activation energy becomes zero
D.The substrate turns into the enzyme
Explanation: Excessive heat can denature proteins, distorting the active site so substrate binding and catalysis decline.
10In double-stranded DNA, which base pairs with adenine?
A.Guanine
B.Cytosine
C.Thymine
D.Uracil
Explanation: In DNA, adenine pairs with thymine via hydrogen bonds; guanine pairs with cytosine.

About the BW Abitur Biology Bilingual EN Practice Questions

Verified exam format metadata for Baden-Württemberg Abitur Biology Bilingual English (Biologie bilingual englisch; Internationales Abitur Baden-Württemberg pathway) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.