Life sciences including cell biology, genetics, physiology, and more
Pre-Med practice questions about mitochondrial structure, function, and inheritance
Pre-Med practice questions about the nucleus, chromatin, and nuclear components
Pre-Med practice questions about ribosome structure, location, and function
Pre-Med practice questions about rough and smooth endoplasmic reticulum
Pre-Med practice questions about Golgi structure, function, and protein sorting
Pre-Med practice questions about lysosomal structure and function
Pre-Med practice questions about peroxisomal structure, metabolism, and targeting
Pre-Med practice questions about chloroplast structure, photosynthesis, and endosymbiosis
Pre-Med practice questions about microtubules, microfilaments, and intermediate filaments
Challenging Pre-med style questions on mitosis, spindle mechanics, and cytokinesis in plant and animal cells
Challenging Pre-med style questions on meiosis, ploidy, chromatids/DNA molecules, crossing over, segregation, and independent assortment
Pre-med style practice questions on Mendelian inheritance, segregation, independent assortment, pedigrees, and probability
Comprehensive Pre-med style evolution questions on terminology, natural selection, genetic drift, speciation, and sources of variation
Comprehensive Pre-med style questions on DNA replication, S phase, enzymes, directionality, and regulation
Pre-med style questions on membrane structure, fluid mosaic model, diffusion, osmosis, active transport, and vesicular transport
Comprehensive Pre-med style questions on gradients, osmotic and oncotic pressure, Starling forces, and physiological examples (edema, capillaries, IV fluids).
High-school/pre-med-level questions on basic physiology concepts, homeostasis, and the four main tissue types.
High-school/pre-med-level questions on nephron anatomy, transport mechanisms, SGLT, glucose handling, medullary gradients and urine concentration.
High-school/pre-med-level questions on the cardiac cycle, heart sounds, valve events, ECG relationships, and stroke volume.
High-school/pre-med-level questions comparing the sympathetic and parasympathetic divisions of the autonomic nervous system.
High-school/pre-med-level questions on gastrointestinal digestion, key digestive enzymes, and hormonal control (gastrin, secretin, CCK, etc.).
High-school/pre-med-level questions on major brain regions, lobes, structures and their basic functions.
High-school/pre-med-level questions on interpreting pedigrees and identifying modes of inheritance (autosomal vs sex-linked, dominant vs recessive, mitochondrial, and common probability tricks).
High‑school/pre‑med level questions on innate vs adaptive immunity, cells of the immune system, antibodies, vaccination, inflammation, allergy and autoimmunity.
High‑school/pre‑med level questions on neuron structure, resting potential, action potentials, synapses, neurotransmitters, and myelination.
Pre-med/IB-level practice on cellular respiration from glycolysis (cytosol) to pyruvate oxidation (link reaction), citric acid cycle (Krebs), anaerobic vs aerobic ATP yield, mitochondrial structure, electron transport chain, chemiosmosis, and ATP synthase—focused on concept traps and multi-step reasoning.
Pre-med style questions on glucose entry into cells, GLUT transporters, SGLTs, facilitated diffusion, and phosphorylation by hexokinase and glucokinase.
High-school/Pre-med/IB questions on reflex arc components, synapses, nerve structure, and factors affecting speed of nervous transmission.
High‑school/Pre-med/IB questions on hemoglobin structure, oxygen binding cooperativity, Bohr shift (CO₂/pH effects), alkalosis/acidosis, fetal hemoglobin, and sickle cell basics.
High school / pre-med / IB questions on eye optics, retina and photoreceptors, phototransduction basics, and key visual pathway concepts.
High school / pre-med / IB questions that teach phototransduction: what light does inside rods and cones, the cGMP pathway, neurotransmitter changes, bleaching, adaptation, and key rod/cone differences.
60+ Pre-med/IB-style questions on skeletal muscle fiber anatomy, sliding filament theory, excitation-contraction coupling, motor units, energy systems, fiber types, smooth vs cardiac muscle basics, tendons, and biomechanics.
High school / pre-med / IB practice on the HPG axis, endocrine feedback, testicular anatomy, and spermatogenesis/meiosis (n, chromatids/DNA molecules, stages, and locations).
High school / pre-med / IB practice on female reproductive anatomy, ovarian + uterine cycles, endocrine feedback (GnRH–LH/FSH–ovary), oogenesis/meiosis timing (n, chromatids/DNA molecules), ovulation, fertilization, implantation, and key pregnancy/lactation hormones.
Pre-med/IB-level practice on vessel anatomy (tunics, valves, compliance), artery vs vein function, capillary types and exchange, portal systems (hepatic and pituitary), and regulation of vascular tone (autonomic, endothelial and hormonal control).
Pre-med/IB-level practice on chloroplast structure, light reactions vs Calvin cycle, chemiosmosis in thylakoids, C3/C4/CAM and photorespiration basics, plus core leaf/vascular anatomy (stomata, mesophyll, xylem, phloem) and limiting factors.
Comprehensive Pre-med/IB-style practice on glycolysis fundamentals, regulation, and how different human cell types depend on glycolysis (RBCs, muscle, liver, brain, kidney medulla, lens/cornea, immune cells, cancer). Includes common traps: insulin dependence, NAD+ regeneration, ATP accounting, glycogen vs blood glucose, lactate handling, and lab/clinical-style scenarios.
IB/Pre-med style biotechnology MCQs covering core lab techniques (PCR, gels, restriction enzymes, cloning, sequencing, blots), genetic engineering (vectors, reporters, selection), CRISPR basics, DNA profiling, and classic applications (recombinant insulin, GM crops, monoclonal antibodies, ELISA). Emphasis on conceptual traps and correct interpretation of results.
Pre-med/IB-level conceptual practice on enzyme kinetics: meaning of Km and Vmax, saturation, enzyme concentration vs substrate concentration, catalytic efficiency, and how different inhibitor types (competitive, noncompetitive, uncompetitive, mixed, irreversible, allosteric) change kinetics and graphs. Built to teach the concepts through tricky, realistic scenarios (no heavy calculations).
High school / IB / pre-med level questions covering allopatric, sympatric, parapatric and peripatric speciation; gene flow, drift, selection, mutation; prezygotic vs postzygotic isolation; hybrid zones, reinforcement, ring species, and common concept traps about what counts as a species.
Pre-med/IB-style MCQs on prokaryotic structure (cell envelope, nucleoid, plasmids, pili/flagella, ribosomes), prokaryotic metabolism (respiration, fermentation, photosynthesis, chemiosmosis), and high-yield comparisons with eukaryotic cells.
High school / pre-med / IB-style questions on membrane receptor types (GPCRs, ion channels, RTKs, intracellular receptors) with a focus on GPCR logic: why cells need membrane receptors, why cascades and amplification exist, second messengers (cAMP, IP3/DAG, Ca2+), and how signals are turned off (desensitization, GTP hydrolysis, PDE).
Pre-med/IB-style practice on virus structure, classification (DNA/RNA, enveloped/non-enveloped), replication strategies (lytic vs lysogenic), host range/tropism, and HIV as a key retrovirus example—focused on concept understanding and common traps.
Conceptual Pre-med/IB-style questions on the renin–angiotensin–aldosterone system (RAAS) and antidiuretic hormone (ADH): why these systems exist, what triggers them, how they amplify signals, how they change urine composition, and how they interact during dehydration, hemorrhage, salt/water loads, and common physiology-style scenarios.
Pre-med/IB-style MCQs on red vs yellow marrow, hematopoiesis, bone growth (endochondral vs intramembranous), growth plates, and the roles/regulation of osteoblasts, osteocytes, and osteoclasts.
Pre-med/IB-style questions on what buffers are, the bicarbonate buffer system, why CO2 matters, and how lungs and kidneys maintain blood pH. Includes tricky scenarios for respiratory vs metabolic acidosis/alkalosis and compensation.
Pre-med/IB-style questions on the determinants of arterial blood pressure (CO, TPR, compliance), rapid neural control (baroreflex, autonomic nervous system), slower hormonal control (RAAS, ADH, ANP), and classic physiology scenarios (posture, exercise, hemorrhage, temperature).
Pre-med/IB-style questions on semen composition, accessory gland contributions (seminal vesicles, prostate, bulbourethral glands), sperm production vs maturation (seminiferous tubules vs epididymis), and key physiology concepts such as pH, coagulation/liquefaction, capacitation, and ejaculation control.
Pre-med/IB-style questions on peptide bond chemistry, polypeptide directionality, and how primary/secondary/tertiary/quaternary structure are formed, stabilized, disrupted, and tested experimentally.
Pre-med/IB-style questions on lipid types (fatty acids, triglycerides, phospholipids, steroids), amphipathic behavior, membrane fluidity/permeability, lipid asymmetry and signaling, and classic conceptual traps (cis vs trans, cholesterol effects, detergents).
Pre-med/IB-style questions covering carbohydrate structure (mono/di/polysaccharides), glycosidic bonds, reducing sugars, alpha vs beta linkages, storage vs structural polysaccharides (starch, glycogen, cellulose, chitin), and cell biology roles (glycocalyx, glycoproteins/glycolipids, cell recognition, peptidoglycan).
Pre-med/IB-style questions on transcription and translation fundamentals: DNA strands, RNA synthesis directionality, mRNA processing, ribosome function, tRNA charging/anticodons, reading frames, and start/stop codons (including common conceptual traps).