1 / 17

Characteristics of Life, Chapter 1.3

Characteristics of Life, Chapter 1.3. Biology Mr. Harger. Living things are:. Made of cells (p17) Small, self-contained units Collection of living material enclosed by a barrier, separating it from the rest of the environment Extremely diverse Unicellular versus multicellular

adsila
Download Presentation

Characteristics of Life, Chapter 1.3

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. Characteristics of Life, Chapter 1.3 Biology Mr. Harger

  2. Living things are: • Made of cells (p17) • Small, self-contained units • Collection of living material enclosed by a barrier, separating it from the rest of the environment • Extremely diverse • Unicellular versus multicellular • Multicellular shows specialization

  3. http://evolution.berkeley.edu/evosite/lines/images/cells.gif

  4. Living things: • Reproduce (p17) • Production of new organisms • Sexual versus Asexual • Sexual requires 2 parents, one reproductive cell from each • Asexual involves only 1 parent, splitting or branching

  5. http://www.tulane.edu/~wiser/protozoology/notes/images/ciliate.gifhttp://www.tulane.edu/~wiser/protozoology/notes/images/ciliate.gif

  6. Living things are: • Based on a universal genetic code (p17) • Offspring resemble their parents • Deoxyribonucleic acid = DNA • Molecule that carries directions for inheritance from one generation to the next

  7. http://news.bbc.co.uk/furniture/in_depth/sci_tech/2000/human_genome/dna_infograph1.gifhttp://news.bbc.co.uk/furniture/in_depth/sci_tech/2000/human_genome/dna_infograph1.gif

  8. Living things: • Grow and develop (p18) • Every living thing has a life cycle • Pattern of growth and change over time • Increase in size • Cells of organisms not only increase in number, but also differentiate

  9. http://nursingcrib.com/wp-content/uploads/growth-chart2.jpg http://www.agric.wa.gov.au/objtwr/imported_images/incompletechange.gif http://www.extension.umn.edu/distribution/cropsystems/images/5701f02.gif

  10. Living things: • Obtain and use materials for energy (p18) • Metabolism – a build up or break down of materials in the body • Photosynthesis – using NRG from the sun to make food • Consumers eat photosynthetic organisms or other animals for NRG • Decomposers obtain NRG from the remains of organisms no longer living

  11. http://www.seas.columbia.edu/earth/RRC/images/636px-Recycle001.svg.pnghttp://www.seas.columbia.edu/earth/RRC/images/636px-Recycle001.svg.png http://erin-wnax.itmblog.com/files/2009/07/food_pyramid.jpg

  12. Living things: • Respond to their environment (p19) • Environments are constantly changing • Such things as light and temperature vary from day to day • Other living things and nonliving things also change • An organism may change its surroundings • An organism changes in response to the changes in its surroundings for survival

  13. Living things: • Maintain a stable internal environment (p19) • Homeostasis • Keeping an internal consistency for survival • If homeostasis is majorly disrupted, the organism cannot survive

  14. http://scienceblogs.com/clock/upload/2006/06/Homeostasis-Fig.jpghttp://scienceblogs.com/clock/upload/2006/06/Homeostasis-Fig.jpg http://wps.prenhall.com/wps/media/objects/488/500571/CDA38_2.jpg

  15. Living things: • Change over time (p20) • Evolve – change of any given kind of organism over time • Small generational changes may be insignificant • Changes over thousands or millions of years may be dramatic • The ability of a group of organisms to change over time is invaluable for survival in a world that is always changing

  16. http://science.kukuchew.com/wp-content/uploads/2008/05/explosm-evolution-t-shirt.jpghttp://science.kukuchew.com/wp-content/uploads/2008/05/explosm-evolution-t-shirt.jpg

More Related