Tuesday, August 28, 2012

Natalie Yancey Photos 11-20

Ethylene is a hormone that is naturally created. This hormone aids in the ripening of fruit. Tomatoes ripen with the help of ethylene. We grow tomatoes in our yard but without the ethylene our precious tomatoes would never be deliciously ripe.

Asexual Reproduction- Asexual reproductions happen through a process of cell division. Asexual reproduction doesn’t involve two organisms; it includes the duplication of genetic cells into brand new cells. Among other things strawberry plants reproduce asexually. These are found in my yard!

. Redox reaction- A redox reaction involves a chemical reaction in which an atoms “oxidation state” is changed. Featured in the photo is a rusty chain. It is a prime example of a redox reaction.

Introduced species- Introduced species are plants and animals that are not native to a particular area but have been brought over by humans. Ivy is one of the introduced species in our area! It grows up native fir trees and destroys the bark.

Population- A population is any collection of species living in the same place. For example, the picture shows a population of potato bugs!

Fermentation- Fermentation is a metabolic process where a nutrient like sugar is broken down into other products.  Sugar is converted to alcohol when it is fermented with yeast.  Another example is: when I eat sugar I need to break it down into energy by working out.  The result is lactate which makes my muscles hurt.

Frond- The leaves of ferns are called fronds. As seen in the photo there is a frond. Fronds are normally long and flat, just like the picture!

Enzyme- Enzymes are helper biological molecules in chemical reactions.  Most chemical reactions in a cell need enzymes to speed up the reaction time.  This is a picture of rennin. My dad uses it when he makes cheese at home

Dominant vs. recessive phenotypes- Phenotypes are traits one can see. For example, blue and brown eyes. The dominant and recessive parts are genotypes, which dictate what the phenotypes will be. You can see the different phenotypes in the photo.

Connective Tissue- Connective tissue is made of different fibers to create ”glue” like tissue that holds humans and animals together. As seen in the chicken, there is a surplus of connective tissue holding the tendons and skin together

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