11 ready-made review sets for this theme, by subtopic and marked SL or HL, plus 2 mixed review sets that run into it. Free to host, and students join with a code.
General name for the covalent bond linking any two monosaccharides, formed by condensation?
Theme B links structure to function at every scale. Molecules: carbohydrates, lipids and proteins. Cells: membranes and membrane transport, organelles and compartmentalization, and cell specialization. Organisms: gas exchange and transport, with muscle and motility at higher level. Ecosystems: adaptation to environment and ecological niches.
Play this set opens the set in splycr, where you can read every question and host it for your class straight away. Hosting needs no account, and students join with the code on the board. A free account lets you copy a set and edit it.
The questions come from the Biology by Bradford flashcard bank, written by an IB and AP Biology teacher. Each one plays as multiple choice, and the wrong options are other answers from the same set.
Sets marked SL suit every IB Biology student, because higher level students study the standard level content too. Sets marked HL cover the additional higher level material, and six subtopics are for higher level only: A2.1, A2.3, A3.2, B3.3, C2.1 and D2.2. Some sets are marked SL and HL, and cover both.
B1 · Molecules
General name for the covalent bond linking any two monosaccharides, formed by condensation?
Answer: Glycosidic bond
Structural beta-glucose polymer found in plant cell walls?
Answer: Cellulose
What type of glycosidic bond creates a branch point in a polysaccharide?
Answer: 1,6 glycosidic bond
What lipid is formed from one glycerol and three fatty acids?
Answer: Triglyceride
What term describes the bond linking fatty acids to glycerol in triglycerides?
Answer: Ester bond
Fatty acid with one or more C=C double bonds; liquid at room temp?
Answer: Unsaturated fatty acid
The 3D folding of a single chain caused by R-group interactions?
Answer: Tertiary structure
A non-protein molecule tightly bound to a protein (e.g., the heme group)?
Answer: Prosthetic group
Strong covalent bond between the sulfur atoms of two cysteine residues?
Answer: Disulfide bridge
B2 · Cells
The model describing the membrane as a fluid bilayer with mobile, embedded proteins?
Answer: Fluid mosaic model
A steroid in animal membranes that regulates fluidity and stability?
Answer: Cholesterol
What term describes a molecule that has both hydrophilic and hydrophobic parts?
Answer: Amphipathic
Passive transport using channel or carrier proteins to move polar/large molecules?
Answer: Facilitated diffusion
Specialized channel proteins that allow for the rapid movement of water molecules?
Answer: Aquaporins
The movement of substances against a concentration gradient using energy (ATP)?
Answer: Active transport
No set of its own yet. The mixed review set B2.2–B3.2, below, includes some of it.
Stem cells that can differentiate into any cell type except the placenta?
Answer: Pluripotent
A red blood cell specialized for oxygen transport; lacks a nucleus to save space?
Answer: Erythrocyte
A plant cell packed with chloroplasts for maximum photosynthesis?
Answer: Palisade mesophyll cell
B3 · Organisms
Extremely thin alveolar cells specialized to minimize diffusion distance?
Answer: Type I pneumocyte
Cuboidal alveolar cells that secrete pulmonary surfactant?
Answer: Type II pneumocyte
A condition where alveolar walls are destroyed, reducing surface area for gas exchange?
Answer: Emphysema
The vessel that returns blood to the heart; contains valves to prevent backflow?
Answer: Vein
The heart's natural pacemaker located in the right atrium?
Answer: Sinoatrial (SA) node
The arteries that supply the heart muscle itself with oxygen and nutrients?
Answer: Coronary arteries
The basic functional and contractile unit of skeletal muscle?
Answer: Sarcomere
The modified ER in muscle cells that stores and releases calcium ions?
Answer: Sarcoplasmic reticulum
The protein that blocks myosin-binding sites on actin when the muscle is relaxed?
Answer: Tropomyosin
B4 · Ecosystems
A plant adapted to survive in extremely dry conditions?
Answer: Xerophyte
A plant adapted to survive in saline (salty) environments?
Answer: Halophyte
A graph that shows the relationship between temperature and precipitation in a biome?
Answer: Climograph
The theoretical range of conditions and resources a species could use without competition?
Answer: Fundamental Niche
The actual range of conditions and resources a species does use due to competition?
Answer: Realized Niche
Organisms that secrete enzymes to externally digest dead organic matter before absorbing it?
Answer: Saprotrophs
Each of these runs across several subtopics in syllabus order, from the first code in its title to the second. They suit a review at the end of a theme.
What is the protein that coats the cytoplasmic side of a membrane to help it curve and form a vesicle?
Answer: Clathrin
The two specialized cells that surround a stoma and control its opening?
Answer: Guard cells
Specialized cells that provide metabolic support to phloem sieve tube elements?
Answer: Companion cells
A polymer that strengthens xylem walls to prevent collapse under tension?
Answer: Lignin
Which enzyme synthesizes ATP as protons flow down their concentration gradient?
Answer: ATP synthase
What are the gaps in the myelin sheath where ion exchange occurs?
Answer: Nodes of Ranvier
Every set plays in all eight modes. These two fit this theme best.
Form and function answers are short names (glycosidic bond, aquaporin, sarcomere), so the bomb moves quickly and everyone answers many times. Nobody is knocked out.
A streak raises the multiplier to 3× and one slip drops it to 1×. Fast answers score a little more, but a long streak counts for more, so it rewards the student who can match every structure to its function.