General Biology: Definitions and explanations page 3 PDF | Download eBooks

Learn general biology terms with definitions and explanations, biology terminologies (Page 3) for biology degree programs.


  1. What are Bulk feeders?
    Most animals are bulk feeders. they eat relatively large pieces of food. many vertebrates, including ourselves, ...
  2. What is Bulk flow?
    Bulk flow is a special kind of movement of water and solutes in the plants. this ...
  3. What is Bundle sheath?
    Bundle sheath cells is a layer of cells in plant leaves and stems that forms a ...
  4. What are C4 plants?
    A c4 plant is a plant that cycles carbon dioxide into four-carbon sugar compounds to enter ...
  5. What is Calorie?
    Calorie is a measure of energy and does not measure weight or length. it is the ...
  6. What are CAM plants?
    Cam plants have evolved to reduce photorespiration. cam is basically a carbon fixation pathway that evolved ...
  7. What are Capillaries?
    A capillary is a small blood vessel from 5 to 10 micrometers (µm) in diameter, and ...
  8. What are Capillary beds?
    Individual capillaries are part of the capillary bed, an interweaving network of capillaries supplying tissues and ...
  9. What is Capsid?
    A capsid is the protein shell of a virus. it consists of several oligomeric structural subunits ...
  10. What are Carbohydrates?
    Carbohydrates are important building blocks of life. many of the important structures in the body are ...
  11. What is Cardiac cycle?
    The cardiac cycle is the performance of the human heart from the beginning of one heartbeat ...
  12. What is Cardiac muscle?
    Cardiac muscle is one of three types of vertebrate muscles, with the other two being skeletal ...
  13. What is Cardiac output?
    Cardiac output is a term used in cardiac physiology that describes the volume of blood being ...
  14. What is Cardiovascular system?
    The closed circulatory system, also called the cardiovascular system or the vascular system, is an organ ...
  15. What are Carnivores?
    A carnivore is an organism that derives its energy and nutrient requirements from a diet consisting ...
  16. What are Carnivorous plants?
    These carnivorous plants live in acid bogs and other habitats where soils are poor in nitrogen ...
  17. What is Carpel?
    The female reproductive organ of a flower, consisting of an ovary, a stigma, and usually a ...
  18. What are Carriers?
    An organism that carries a copy of the gene but is not expressing it, usually this ...
  19. What is Cartilage?
    Cells called chondrocytes secrete the collagen and chondroitin sulfate, which together make cartilage a strong yet ...
  20. What is Casparian strip?
    The casparian strip is present in the plant cells. it is a band of cell wall ...
  21. What are Catabolic pathways?
    Catabolism is the set of metabolic pathways that breaks down molecules into smaller units that are ...
  22. What are Catalysts?
    Generally, the rate of a chemical reaction is increased by adding a substance known as a ...
  23. What is Cation exchange?
    Cation exchange capacity is the total capacity of a soil to hold exchangeable cations. it is ...
  24. What is Cation?
    A positively charged ion is a cation. if kept in a electric field, these ions will ...
  25. What is Cell cycle?
    The cell cycle is a four-stage process. during this entire stage the cell grows and separates ...
  26. What is Cell differentiation?
    Cellular differentiation is the process where a cell changes from one cell type to another. usually, ...
  27. What is Cell division?
    Cell division is the separation of a normal cell that leads to the production of two ...
  28. What is Cell fractionation?
    The cell fractionation process is used to separate cellular components based on their size but meanwhile ...
  29. What is Cell mediated response?
    Cell-mediated immunity is an immune response that does not involve antibodies and rather is the activation ...
  30. What is Cell wall?
    A cell wall is a structural layer which surrounds certain types of cells including plant cells. ...
  31. What are Cells?
    Cells are the small building blocks of all the living things. the cells are membrane enclosed ...
  32. What is Central dogma?
    The central dogma of life is basically a concept that states that all the information flows ...
  33. What is Centromere?
    The centromere is the specialized dna sequence of a chromosome that links the dyads or the ...
  34. What is Centrosome?
    A centrosome is an important organelle in the cell that has vital functions during the division ...
  35. What are Chaperonins?
    Chaperonin proteins provide favorable conditions for the folding of other proteins. in their absence, the proteins ...
  36. What is Character?
    A heritable feature which is acquired from the parents is called a character. for example in ...
  37. What is Checkpoint?
    A checkpoint is one of several points in the eukaryotic cell cycle at which the progression ...
  38. What is Chemical bond?
    An interaction between atoms that last for a long time and is responsible for holding the ...
  39. What is Chemical reactions?
    Chemical transformation of a substance that results from making or breaking of bonds present between atoms ...
  40. What is Chemiosmosis?
    Chemiosmosis is the movement of ions across a semipermeable membrane, down their electrochemical gradient and the ...
  41. What is Chiasmata?
    A chiasma is the point of contact or a physical link between two chromatids belonging to ...
  42. What is Chitin?
    Chitin, a long-chain polymer of n-acetylglucosamine, is a derivative of glucose. it is a primary component ...
  43. What is Chlorophyll?
    The green photosynthetic pigment that is required for the process of photosynthesis. present usually in plants ...
  44. What is Chloroplast?
    Just like the mitochondria in the animal cells the chloroplast function as the power house in ...
  45. What is Cholesterol?
    Cholesterol is an organic molecule which is found abundantly in many living organisms. it is a ...
  46. What is Chorionic villus sampling (CVS)?
    Chorionic villus sampling, sometimes called "chorionic villous sampling", is a form of prenatal diagnosis to determine ...
  47. What is Chromatin?
    Chromatin is a complex of dna and histone proteins. chromatin is actually what formed the chromosomes ...
  48. What is Chromosomal deletion?
    Chromosomal deletion refers to a mishap in which a part of a chromosome or a sequence ...
  49. What is Chromosome theory of inheritance?
    This theory is also called the boveri-sutton chromosome theory is a fundamental unifying theory of genetics ...
  50. What is Chromosomes?
    The chromosomes are basically structures that hold the genetic material. the dna molecule is neatly packaged ...
  51. What is Chyme?
    Chyme or chymus is the semi-fluid mass of partly digested food that is expelled by the ...
  52. What are Circadian rhythms?
    A circadian rhythm is a natural, internal process that regulates internal cycles of organisms and repeats ...
  53. What is Circulatory system?
    He circulatory system, also called the cardiovascular system or the vascular system, is an organ system ...
  54. What are Cis-trans isomers?
    The cis isomers have the same formula but have a different spatial orientation of the functional ...
  55. What is Cleavage?
    The division of the cytoplasm happens through cleavage. much like the embryonic cleavage, the cell cleave ...
  56. What is Clonal selection?
    Clonal selection is basically a phenomenon in immunology that explains the functions of lymphocyte cells of ...
  57. What is Clone?
    Clones are genetically duplicate or identical organisms made by cloning of parents. cloning is the process ...
  58. What is Cloning vector?
    A cloning vector is a small piece of dna, taken from a virus, a plasmid, or ...
  59. What is Closed circulatory system?
    The closed circulatory system, also called the cardiovascular system or the vascular system, is an organ ...
  60. What are Cnidocytes?
    A cnidocyte , which is also known as nematocyte, is an explosive cell containing one giant ...