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Quizzes > Science > Biology

Ready to Ace the Grade 11 Biology Questions and Answers Quiz?

Think you can ace ch.2 critical thinking biology? Dive into these questions and answers!

Editorial: Review CompletedCreated By: Connor LeckieUpdated Aug 26, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration featuring Grade 11 biology quiz theme with DNA helix neuron icons on dark blue background

This Grade 11 biology quiz helps you practice core ideas from cell structure to genetics and apply Chapter 2 critical thinking. Work at your pace, see your score, and spot gaps before the exam; if you want more, try another quick bio quiz or prep with a full final review .

Which organelle is primarily responsible for ATP production in eukaryotic cells?
Mitochondrion
Smooth endoplasmic reticulum
Golgi apparatus
Lysosome
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In a phospholipid bilayer, which region is hydrophobic?
Peripheral protein surfaces
Fatty acid tails
Phosphate head groups
Glycoprotein chains
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Enzymes increase reaction rates by
Shifting equilibrium to products
Raising activation energy
Lowering activation energy
Increasing product stability permanently
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Which molecule is the primary structural component of plant cell walls?
Glycogen
Peptidoglycan
Cellulose
Chitin
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Which cellular process specifically requires oxygen as the final electron acceptor?
Glycolysis
Fermentation
Calvin cycle
Oxidative phosphorylation
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Which transport method moves substances against their concentration gradient using ATP?
Simple diffusion
Facilitated diffusion
Primary active transport
Osmosis
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During which mitotic phase do sister chromatids separate?
Prophase
Telophase
Metaphase
Anaphase
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Which part of a microscope primarily determines resolving power?
Stage clip tension
Objective lens numerical aperture
Coarse focus knob
Eyepiece magnification
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What is the complementary DNA strand to 5'-ATG CCA TTT-3' when written 5'-to-3'?
5'-ATG CCA TTT-3'
5'-TAC GGT AAA-3'
5'-AAA TGG CAT-3'
5'-UAC GGU AAA-3'
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Which bond stabilizes secondary structure in proteins (alpha-helices and beta-sheets)?
Ionic bonds only between acidic residues
Disulfide bonds between all residues
Peptide bonds between R groups
Hydrogen bonds between backbone groups
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Which scenario best illustrates incomplete dominance?
Red and white snapdragons produce pink offspring
A brown mouse mating with a white mouse yields all brown offspring
A trait controlled by many genes showing a spectrum of phenotypes
AB blood type expressing both A and B antigens
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A species' ecological niche refers to its
Phylogenetic lineage
Geographic location only
Role and use of resources in its environment
Population size at carrying capacity
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The sodium-potassium pump typically moves ions how per ATP hydrolyzed?
2 Na+ in, 3 K+ out
3 Na+ in, 2 K+ out
3 Na+ out, 2 K+ in
2 Na+ out, 3 K+ in
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Which structure anchors plant cells to each other and allows water passage between them?
Plasmodesmata
Tight junctions
Gap junctions
Desmosomes
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Which statement best describes a competitive inhibitor of an enzyme?
Binds the active site and increases Km without changing Vmax
Binds an allosteric site and decreases Vmax only
Binds substrate to form an inactive product
Irreversibly inactivates the enzyme by covalent modification in all cases
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Which statement accurately describes a keystone species?
Any species at the top trophic level
A species with disproportionate impact on community structure relative to its abundance
A species with the largest body size in an ecosystem
The most abundant primary producer
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Which outcome results from nondisjunction during meiosis?
Normal chromosome number in all gametes
Aneuploidy in gametes
Increased crossing over
Polyploidy in somatic cells only
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The lac operon in E. coli is most strongly expressed when lactose is present and
Tryptophan is abundant
Glucose is abundant, lowering cAMP levels
Arabinose is absent
Glucose is scarce, raising cAMP levels
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The Hardy-Weinberg principle describes genetic equilibrium in a population under specific conditions.
True
False
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Telomeres protect chromosome ends from degradation and shortening during replication.
True
False
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Study Outcomes

  1. Understand Chapter 2 Fundamentals -

    Master core ideas such as cell structure, molecular interactions, and energy flow to confidently tackle biology questions and answers from chapter 2.

  2. Analyze Scientific Scenarios -

    Use critical thinking strategies from our ch.2 self quiz critical thinking biology questions to evaluate experimental designs and predict outcomes.

  3. Apply Precise Terminology -

    Employ accurate definitions and concepts when forming and responding to biology questions to ask during further study and discussions.

  4. Evaluate Quiz Performance -

    Interpret your quiz results to identify strengths and weaknesses in biology questions answers for targeted review and improvement.

  5. Differentiate Biological Processes -

    Contrast mechanisms like diffusion vs. osmosis and photosynthesis vs. respiration to deepen your conceptual clarity.

  6. Recall Essential Vocabulary -

    Reinforce and retrieve key terms and definitions to improve retention of chapter 2 content.

Cheat Sheet

  1. Water's Unique Properties -

    Water's high cohesion and adhesion make it a versatile solvent in cells, supporting nutrient transport and chemical reactions. Remember "like dissolves like" to predict solubility of polar vs nonpolar molecules. In ch.2 self quiz critical thinking biology practice, a common biology question to ask is how hydrogen bonding contributes to water's high specific heat.

  2. Macromolecule Building Blocks -

    Understanding the four classes of macromolecules - carbohydrates, lipids, proteins, and nucleic acids - is essential for biology questions and answers on biomolecular structure. Use the mnemonic "CHON-P" (Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus) to recall major elements in proteins and nucleic acids. For example, test yourself by drawing a peptide bond formation reaction from two amino acids.

  3. Functional Groups and Reactivity -

    Recognize key functional groups (hydroxyl, aldehyde, carboxyl, amino, phosphate) to predict molecular behavior in metabolic pathways. A useful trick is associating an "-OH" with alcohol and "-NH₂" with amines to answer critical-thinking prompts on reaction mechanisms. In biology questions answers reviews, identifying these groups often appears in structure labeling tasks.

  4. Enzyme Activity and Kinetics -

    Enzymes lower activation energy through the lock-and-key or induced-fit models, and factors like pH and temperature alter their rate. Recall the Michaelis-Menten equation v = (Vmax[S])/(Km + [S]) to solve kinetics problems in your self-quiz. A strong ch.2 self quiz critical thinking biology question might ask how a competitive inhibitor changes the Km value.

  5. pH Scale and Buffer Systems -

    Remember pH = - log[H❺] and how buffers like the bicarbonate system maintain homeostasis in blood. Practice balancing H₂CO₃ and HCO₃❻ equations to answer biology questions to ask about acid - base imbalances. This topic is a staple in biology questions and answers quizzes, as it links chemistry to physiological regulation.

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