General Biology: Definitions and explanations page 18 PDF Book

Learn general biology terms with definitions and explanations, biology terminologies (Page 18) for biology degree programs.


  1. What is Vestigial structures?
    A "vestigial structure" or "vestigial organ" is an anatomical feature or behavior that no longer seems ...
  2. What is Viral envelope?
    Viral envelopes are not present on all viruses. some viruses which include hiv and many other ...
  3. What are Viral movement proteins?
    A movement protein is a non-structural protein which is encoded by some plant viruses to allow ...
  4. What are Viroids?
    Viroids are circular rna molecules, only a few hundred nucleotides long, that infect plants. viroids do ...
  5. What is Virulent phage?
    A bacteriophage that causes the destruction of the host bacterium by lysis is a virulent phage. ...
  6. What is Virus?
    Virus are small particles composed of genetic material which is either dna or rna and is ...
  7. What is Visible light?
    Visible light forms a small portion of the electromagnetic spectrum. the visible spectrum is the portion ...
  8. What is Vital capacity?
    Vital capacity is the maximum amount of air a person can expel from the lungs after ...
  9. What are Vitamins?
    A vitamin is an organic molecule (or related set of molecules) that is an essential micronutrient ...
  10. What is Water potential?
    Water potential is the potential energy of water in a system compared to pure water, when ...
  11. What is Wavelength?
    A wavelength is a measure of distance between two identical peaks or crests which are high ...
  12. What is Wild type?
    Wild type refers to the phenotype of the typical form of a species as it occurs ...
  13. What is Wilting?
    Wilting is the loss of rigidity of non-woody parts of plants and going limp. this occurs ...
  14. What is Wobble?
    A wobble base pair is a pairing between two nucleotides in rna molecules that does not ...
  15. What are X linked genes?
    This is the same as sex linked gene except the gene is specifically located on the ...
  16. What are Xerophytes?
    A xerophyte is a species of plant that has adaptations to survive in an environment with ...
  17. What is Xylem sap?
    Xylem sap consists primarily of a watery solution of hormones, mineral elements and other nutrients. transport ...
  18. What is Xylem?
    Xylem is one of the two types of transport tissue in vascular plants, phloem being the ...
  19. What are Zoospores?
    A zoospore is a motile asexual spore that uses a flagellum for locomotion so these are ...
  20. What is Zygote?
    A zygote is the union of the sperm cell and the egg cell or it can ...