Brianav's Blog

Photosynthesis.

brianav — Fri, 08 May 2009 13:15:58 +0000

Photosynthesis is the process in which producing food is developed by the source of energy which is provided by the sun’s light. The main organisms that use the suns light to create food are mainly producers also known as Atrophy’s. What they do is take in the suns energy and produce glucose for the use of food. The way that the plants help life on the earth is by providing food for animals and humans. The animals, or heterotrophy and they eat majority of the producers. As they eat those plants it provides energy for them who then provide energy for people like me.

The sun is the main important source for life n earth. When the sun light beams on the flower or tree etc the producer takes in the suns energy. Photosynthesis has reactants of light reaction which is h20 and C02 + light. The light reaction occurs in the Thylakoid. This is part of the Calvin cycle which is considered as light- independent reactions just because the light goes into A(light reaction) and not B(Calvin cycle) because it doesn’t receives any sun light. So the side that doesn’t receive light gets energy sent by molecules which provide energy known as ATP and NADPH

Telophase. Metaphase and Prophase

brianav — Fri, 01 May 2009 13:14:49 +0000

in telphase the chromosomes are cordoned off in distinct new nuclei in the emerging daughter cell .

in metaphase it is a stage of mitosis in teh eukaryotic cell in which condensed chromosomes carrying genetic informaition.

Prophase….the stage of mitosis in whoch chromatin condenses into chromosomes. this process, sexual condensation, is mediated by condensin complex. and all though genetic material has been duplicated in a previous cell cycle there are 2 identical copies of each chromosome in the cell.

Revised Genetics Essay

brianav — Fri, 01 May 2009 12:54:45 +0000

Briana Varela March 23, 2009

Genetics is the passing of traits from a parent to an offspring. The O’Leary’s are raising chickens along with the John’s family. In this case the O’Leary’s have all black chickens and the Johns have all white chickens. Eventually some chickens got out of the coop and had a brood of eggs that resulted into a dozen of blue chickens. Te question was what the cause of this happening was and it will be explained in the next paragraph.

	C^B	C^B
C^W	C^B C^W	C^B C^W
C^W	C^B C^W	C^B C^W

During the breeding the all white chickens and the all black chickens happen to get together. The all white chickens had the Genotype C^wC^w and the all black chickens had the genotype C^b. since the chickens were different phenotypes the combination of both chicken resulted in a mixed colored chicken with a color in the middle. The reason why neither chicken resulted in either all black or all white is because neither of the colored chickens alleles were a blend of two genes, so when they are both breaded together they turn out to have a mixed offspring and this case a black and white chicken turning out with a blue chicken. When it’s seen on a punnett square it shows the outcome of the 2 developing offspring’s. In result 100% of the offspring’s are blue. Tin order for the farmers to get back their one color chickens they would have to have the same genotype of chickens get together to create the all black or all white family as before.

	C^B	C^W
C^B	C^B C^B	C^B C^W
C^W	C^B C^W	C^B C^W

In conclusion the chickens had got together creating a new brood of chickens which is blue. The way to get back the same chickens with a division of blue chickens included it would have to be determined by mating with the blue chickens and it would result in having about 25% to %50% of the new offspring being back to the original colors. In the genes of the chickens the offspring’s have probabilities of being a certain color when mixed with different genotypes. And taking a look at the punnett square it results in 50%still being blue and 25% either being all black and all white and then as they continue to reproduce 25% of the same one color offspring it will then go back to all one color chicken family!

brianav — Fri, 17 Apr 2009 13:22:41 +0000

3 paragraph essay

brianav — Mon, 23 Mar 2009 13:21:01 +0000

Briana Varela March 23, 2009

Genetics is the passing of traits from a parent to an offspring. Inheritance is the process of inheriting members and member functions of a particular class. For example your parents don’t have to have a certain trait for you to get but your past ancestor could have had a certain trait that you developed when you were once born. Just like the O’Leary’s, they are raising chickens along with the John’s. in this case the O’Leary’s have all black chickens and the Johns have all white chickens. Eventually some chickens got out of the coop and had a brood of eggs that resulted into a dozen of blue chickens. Te question was what the cause of this happening was and it will be explained in the next paragraph.

	C^B	C^B
C^W	C^B C^W	C^B C^W
C^W	C^B C^W	C^B C^W

During the breeding the all white chickens and the all black chickens happen to get together. The all white chickens had the Genotype C^w and the all black chickens had the genotype C^b. since the chickens were different phenotypes the combination of both chicken resulted in a mixed colored chicken with a color in the middle. The reason why neither chicken resulted in either all black or all white is because neither of the colored chickens alleles were dominant so when they are both breaded together they turn out to have a mixed offspring and this case a black and white chicken turning out with a blue chicken. When it’s seen on a punnett square it shows the outcome of the 2 developing offspring’s. In result 100% of the offspring’s are blue. Tin order for the farmers to get back their one color chickens they would have to have the same genotype of chickens get together to create the all black or all white family as before.

	C^B	C^W
C^B	C^B C^B	C^B C^W
C^W	C^B C^W	C^B C^W

In conclusion the chickens had got together creating a new brood of chickens which is blue. The way to get back the same chickens with a division of blue chickens included it would have to be determined by mating with the blue chickens and it would result in having about 25% to %50% of the new offspring’s being back to the original colors. In the genes of the chickens the offspring’s have probabilities of being a certain color when mixed with different genotypes. And taking a look at the punnett square it results in 50%still being blue and 25% either being all black and all white and then as they continue to reproduce 25% of the same one color offspring it will then go back to all one color chicken family!

brianav — Thu, 12 Mar 2009 13:10:24 +0000

Breast, cancer, genetics

my project was based on Breast cancer and what it is, how it is developed, what cures there is for it. also what symptoms you get when it may start to develope etc. Breast cancer is a disorder that is part od leagcy. Legacy is anything handed down from the past, as from an ancestor. breast cancer is similar because it can be inhertited from the parent (female) to the offspring later on when it grows and develope to a much older individual. Genetics are traits that are passed down from the parents to the offsprings as well and using the punnet squares they show the probablity of the child getting affected with something from the parent, to not getting affected by the parent(showing the outcomes).

Genetics

brianav — Wed, 04 Mar 2009 13:42:39 +0000

The ddisorder that im researching is Breast Cancer. By reasearch i found out that Breast Cancer is a dominant Gene and is often passed on through every generation. I don’t know whether it is X-linked or non X-linked because I haven’t learned it.

What we have learned about Genetics:

brianav — Fri, 27 Feb 2009 14:03:18 +0000

The study of genetics is the gene and inheritence on a chromosomes DNA. Looking at the heredity and characteristic of life of a living thing and what was possibly passed down from the parents of their gene. Dominant alleles is the strongest, and if the both genes exist then dominant is expressed. The ressesive alleles would not exist if the dominant is present. A punnet square is used to determine the possible outcome of an organism. In this chapter a punnet square is used to determine the outcome of genes an organism will be likely to recieve from the passing down genes of the parents.(i didnt get the last question, didnt have time to write it down because you took it down for the next assignment)

organelle admit slip

brianav — Wed, 11 Feb 2009 13:43:28 +0000

i really dont understand how the skin is similar to a cell membrane. My opinion i see the cell membrane the outer layer of the cell protecting the cell. But i still dont know exactly why its similar to the skin. with the endoplasmic reticulum there isnt a clear explanation to my undertanding for why the ER is rough. those were the only 2 questons that were graded incorrect and the same two with the least understanding

Golgi Body

brianav — Fri, 06 Feb 2009 14:22:28 +0000

cells have organelles that have specific duties for a certain cell. one specific organelle that im very interested in is the glogi body. the function of the glogi body organell is a system of membranes that moves the proteins out of the cell. i will be advertising a moving company that is willing to help move items in a home from one location to another. it would be more dependable and reliable and move more quicker in the moving process. just like moving many items from a home the golgo body moves items out of the cell.