putangina

• Theory of Use and Disuse

  Organs not in use will disappear while organs in use will develop
• The world is stable and unchanging
• Statements that support the idea that extinction is necessary


  • To give way for other organisms to develop
  • To let other organisms evolve and progress
• Theory of Natural Selection

  In nature, the organism with desirable characteristics may survive, while those with weaker traits may not
• Homologous structures


  • Forelimb of dog and flipper of whale
• Best test to show the relatedness of two organisms

  Similarity in genomic DNA
• Organisms with close biochemical similarities

  They have a common ancestor and have the same kind of proteins
• Charles Darwin observed the variation of organisms in Galapagos Island
• Jean Baptiste Lamarck proposed the Theory of Acquired Characteristics
• Overproduction


  Having many offspring increases the chance that some of them will survive
• Lamarck's Theory of Use and Disuse

  Body structures develop because they are used extensively
• Most fossils can be found in Sedimentary Rocks
• Chimpanzee is closely related to humans
• Climate change is not evidence of evolution
• Nervous and endocrine systems fail to maintain homeostasis


  It may lead to various diseases and even death
• Ovaries


  Influence female traits and support reproductive function
• Blood clotting is not an example of positive feedback
• Homeostasis


  The state reached when each part of the body functions in equilibrium with other parts, attained through the regulation of the bodily functions by the endocrine and nervous systems
• Variables maintained for homeostasis

  • Body temperature
  • Amount of metabolic wastes in the cell
  • Amount of water in the body
• Nervous System


  Transmits signals between the brain and the rest of the body
• Negative feedback


  A feedback mechanism that affects the production of hormones in the menstrual cycle
• Testis/Testes


  Part of the male reproductive system that produces sperm
• Brain


  An organ located within the skull that functions as organizer and distributor of information for the body
• Feedback mechanism


  The process through which the level of one substance influences the level of another substance
• Uterus


  Female reproductive system that serves as site of egg implantation and is where the fertilized egg develops
• Central Nervous System


  The main processing center for the entire nervous system
• The female reproductive system does not produce semen
• Adrenaline


  The hormone responsible for the boy's action of running away from danger
• Implantation


  When an embryo sticks to the endometrium
• Ecosystem


  A community of organisms that live, feed and interact with the environment
• Population


  The total number of organisms belonging to the same species in a particular environment
• Carrying Capacity


  The maximum number of organisms that an environment can support
• Biodiversity


  The variety of living things in a specific area
• Actions to reduce environmental effect of humans


  • Build a community where houses are built among the trees
• Human activities that benefit the environment

  • Plant trees to control soil erosion
• The carrying capacity of the given graph is 1000
• Breeding guinea pigs in a cage

  The population will decrease
• Biodiversity value categories


  • Direct economic value
  • Ethical/cultural
• Cocolisap infection in coconut trees

  Diseases and parasites restrict the number of coconut trees in the population
• Emigration


  When a population reaches its carrying capacity and individual organisms move to a new location where they may find sufficient resources for survival and reproduction