Biology flashcards

139 QCE Biology cards across 4 modules (63 definitions, 64 key facts, 12 fill-the-gap, 0 formulas). Each session gives you 20 cards, due cards first. Swipe right for easy, left for hard, down for again. Keyboard: Space to flip, 1 to 4 to rate.

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What this deck covers

Unit 1: Cells and multicellular organisms (33 cards, 8 dot points)
Unit 2: Maintaining the internal environment (33 cards, 8 dot points)
Unit 3: Biodiversity and the interconnectedness of life (35 cards, 8 dot points)
Unit 4: Heredity and continuity of life (38 cards, 8 dot points)

Sample cards from this deck

Definition
Cellular components and the fluid mosaic membrane (QCE Biology Unit 1)
Define Cholesterol
Buffers fluidity. Stiffens the membrane at high temperatures and prevents tight packing at low temperatures.
Definition
Endocrine control, hormones and blood glucose regulation (QCE Biology Unit 2)
Define Peptide and amine hormones
Peptide and amine hormones (made of amino acids; insulin, glucagon, ADH, growth hormone, adrenaline). Water-soluble. Bind cell-surface receptors and trigger second-messenger cascades inside the cell. Fast but short-lived effects (seconds to minutes).
Definition
Abiotic and biotic factors, tolerance ranges and ecological niche (QCE Biology Unit 3)
Define Light
Intensity, duration (photoperiod) and quality. Limits photosynthesis in plants and algae; cues flowering, migration and breeding.
Definition
PCR, gel electrophoresis, recombinant DNA, GMOs and CRISPR (QCE Biology Unit 4)
Define Components
Template DNA, two primers (each 18 to 22 bases long, complementary to sequences flanking the target), the four dNTPs, a heat-stable DNA polymerase (Taq, from the hot-spring bacterium Thermus aquaticus), buffer with Mg2 plus ions, and a thermal cycler.
Definition
Cell theory, prokaryotic and eukaryotic cells (QCE Biology Unit 1)
Define All cells arise from pre-existing cells
Cells divide by mitosis (eukaryotes) or binary fission (prokaryotes); they do not form spontaneously.
Definition
Homeostasis and negative feedback control (QCE Biology Unit 2)
Define Receptor (sensor)
A specialised cell or structure that detects the change. Examples: thermoreceptors in skin and hypothalamus, osmoreceptors in hypothalamus, beta cells detecting blood glucose, chemoreceptors detecting blood pH and CO2.
Definition
Carbon, nitrogen and water cycles and human impacts (QCE Biology Unit 3)
Define Cellular respiration
All living organisms oxidise glucose, releasing CO2 and water and producing ATP.
Definition
DNA structure and semi-conservative replication (QCE Biology Unit 4)
Define Purines
Purines (double-ring): adenine (A) and guanine (G).
Definition
Enzymes as biological catalysts and factors affecting activity (QCE Biology Unit 1)
Define Active site
A pocket or cleft with a specific three-dimensional shape and chemistry, formed by the enzyme's tertiary structure.
Definition
Innate and adaptive immune responses (QCE Biology Unit 2)
Define Mucous membranes
Line the airways, digestive tract and urogenital tract. Mucus traps particles; cilia sweep mucus out of the lungs.