Spelling Drills of Biological Technical Terms SS3 Biology Lesson Note

Full list of words from this list:

1. Abdomen: The region of the body between the thorax and the pelvis
2. Abiogenesis: A hypothetical organic phenomenon by which living organisms are created from nonliving matter
3. Absorption: A process in which one substance permeates another
4. Activation energy:  The energy that an atomic system must acquire before a process (such as an emission or reaction) can occur.
5. Active transport: Transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy.
6. Allele: Any of the forms of a gene that can occupy the same locus
7. alternation of generations: The alternation of two or more different forms in the life cycle of a plant or animal.
8. Anabolism: A synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy.
9. Antibiotic: A substance used to kill microorganisms and cure infections.
10. Antigen: Any substance that stimulates an immune response in the body.
11. Appendicular skeleton: The part of the skeleton that includes the pectoral girdle, the pelvic girdle and the upper and lower limbs.
12. Asexual reproduction: Reproduction without the fusion of gametes
13. Atrium: A chamber connected to other chambers or passageways.
14. Axial skeleton: The part of the skeleton that includes the skull and spinal column sternum and ribs.
15. Bilateral symmetry: The property of being symmetrical about a vertical plane
16. Bile: A digestive juice secreted by the liver
17. Biomass: The total amount of living matter in a given unit area
18. Biome: Major ecological community with distinct climate and flora
19. Biosynthesis: Production of a chemical compound by a living organism
20. Bivalve: A sea creature with two connected hinged shells
21. Bone marrow: The fatty network of connective tissue that fills the cavities of bones.
22. Botany: The branch of biology that studies plants
23. Catabolism: Breakdown in living organisms of more complex substances into simpler ones together with release of energy.
24. Catalyst: Substance that initiates or accelerates a chemical reaction
25. Cell wall: A rigid layer of polysaccharides enclosing a plant membrane
26. Cellulose: A polysaccharide that is the chief constituent of all plant tissues and fibres.
27.  Centromere: A specialised condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X-shape.
28. Cerebellum: A major division of the vertebrate brain
29. Cerebrum: Anterior part of the brain consisting of two hemispheres
30. Chemical change: Process determined by substances’ composition and structure
31.  Mother cell: Cell from which another cell of an organism develops
32. Mutation: A change or alteration in form or qualities
33. Mutualism: The relation between two organisms that benefit each other
34. Mycelium: The vegetative part of a fungus consisting of a mass of branching threadlike hyphae.
35. Nervous system: The sensory and control apparatus consisting of a network of nerve cells.
36. Neurotoxin: Any toxin that affects neural tissues.
37.  Notochord: A flexible rod like structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates.
38. Nucleus: A part of the cell responsible for growth and reproduction.
39. Osmosis: Diffusion of molecules through a semipermeable membrane.
40. Palaeontology: The earth science that studies fossil organisms.