EOC Review :
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

EOC Review : 3-26-2012 In active transport, carrier proteins PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on
  • Presentation posted in: General

EOC Review : 3-26-2012 In active transport, carrier proteins A. m ove substances across the cell membrane without the use of ATP. B. move from low concentration to high concentration by diffusion. C. move small molecules through the cell membrane by osmosis.

Download Presentation

EOC Review : 3-26-2012 In active transport, carrier proteins

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Eoc review 3 26 2012 in active transport carrier proteins

EOC Review : 3-26-2012

  • In active transport, carrier proteins

    A. move substances across the cell membrane without the use of ATP.

    B. move from low concentration to high concentration by diffusion.

    C. move small molecules through the cell membrane by osmosis.

    D. move substances from low concentration to high concentration through

    the use of energy.

  • In certain species of roses, white roses and red roses are incompletely dominant to each other. When a red rose and white rose are crossed, a pink rose is produced. What is the probability of producing a white rose when a red rose is crossed with a pink rose?

    A. 100%C. 25%

    B. 75%D. 0%

  • Down’s syndrome (Trisomy 21) and Klinefelter’s syndrome (XXY) are both the

    result of an extra chromosome due to which type of mutation?

    A. deletionC. insertion

    B. frameshiftD. nondisjunction


Patterns of evolution

Patterns of Evolution

  • Evolution is a continuous process.

  • Evolution is going on today in populations of living species and can be observed, recorded and tested.

  • Convergent evolution - organisms that are not closely related resemble each other because they have responded to similar environments.

    • Species from different evolutionary branches may come to resemble one another if they live in very similar environments.

    • Example: Ostrich (Africa) and Emu (Australia).


Case study caribbean anole lizards

Case Study: Caribbean Anole Lizards

  • At least six body types. Found on Caribbean Islands of Cuba, Hispaniola, Jamaica, and Puerto Rico

  • One type is a twig-dwelling anole lizard.

  • A distinct species of twig-dwelling anole is found on each island.


Eoc review 3 26 2012 in active transport carrier proteins

  • Biologists tested DNA of twig-dwelling anoles on different islands.

  • Determined each species evolved independently.

  • Each twig-dwelling species can from different ancestors but evolved similar adaptations to similar habitats.


Eoc review 3 26 2012 in active transport carrier proteins

  • Divergent evolution -related populations become less similar as they respond to different environments.

    • On same island, there are several different types of anole lizards: twig-dwelling, grass-dwelling, tree trunk-dwelling.

    • Lizards become adapted to particular habitats.

  • Adaptive radiation- divergent evolution of a new population in a new environment until the population fills many parts of the environment


Natural selection of anole lizard species

Natural Selection of Anole Lizard Species


Artificial selection

Artificial Selection

  • Process occurs when human breeder chooses individuals that will parent the next generation.

  • Examples:

    • Breed oat plants that yield more grain per stalk

    • Greyhounds that run faster


Coevolution

Coevolution

  • Occurs when two species have evolved adaptations to each other’s influence

  • Process by which two species each evolve in response to changes in the other.

  • Coevolution is most likely to occur when two species have a close relationship and are dependent on each other in some way.

  • Examples:

    1.Some animals produce toxins to prevent predators from eating them. Predators not affected by toxin can eat species.

    2.Humming birds and plants with flowers with long tubes

    3. Antibiotic resistance among bacteria


  • Login