1 / 10

Studying Life

Studying Life. Section 1.3. Characteristics of all LIVING things. Living things are composed of cells Cells have a membrane that forms a boundary between the living and non-living world The can grow, respond to environment and reproduce They are highly ORGANIZED.

danton
Télécharger la présentation

Studying Life

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Studying Life Section 1.3

  2. Characteristics of all LIVING things Living things are composed of cells • Cells have a membrane that forms a boundary between the living and non-living world • The can grow, respond to environment and reproduce • They are highly ORGANIZED.

  3. Living things have the ability to obtain and use ENERGY • Constant supply of energy is needed to maintain cellular balance and organization • What is the source of the energy? • How is it made available to cells? • Plants use sun energy to make sugar and animals eat plants

  4. Living things contain Information (aka genetic code) • All living things have genetic instructions in the form of DNA • The information in DNA molecules (genes) determines how each cell looks and how it functions

  5. Living things reproduce • Sexual reproduction (two parents) results in offspring that are unique • Asexual reproduction (one parent) results in offspring that are identical to parent

  6. Living things grow & develop • Growth: adding more cells • Development: cells take on different shapes as they specialize to perform different jobs

  7. Living things maintain a stable internal environment • Living things must maintain a steady state (homeostasis) in order to survive • Homeostasis: organism’s ability to maintain the constant or stable conditions necessary for life • Examples: blood sugar levels, oxygen in the blood, and body temperature

  8. Living things respond to their environment • Organisms detect and respond to stimuli • Stimulus: anything that causes an organism to react or adjust • Response: reaction to a stimulus • Examples: eyes in bright light/dark light, sweating when hot, plants leaning toward the sun so they can photosynthesize better

  9. Livings things have the ability to evolve • Organisms (as a group not as individuals) evolve or change over time, resulting in adaptations to local environments • Gradual change in population over time (many generations)

More Related