Thursday, May 22, 2014

Creation of glucose in a plant

First, the carbon is created from cell respiration or from decaying organisms. 



Then the water arrives to the plant thought the tap roots, root hairs, or primary roots. The water then gets carried from the roots to leaves through transpiration. Transpiration includes cohesion, adhesion, and evaporation. The water is carried  in the xylem locate in the stem of the plant. 
The water is then split by photo system two. The oxygen is released. Then wavelength 680 bumps up the electrons to another energy level. This is then taken to the electron transport chain. This process creates ATP but not e bought to survive on. Then the electrons are taken to photo system one. Wavelength 700 again excites the electrons and then these make NADPH. 

Then the carbon is taken to the Calvin cycle. This cycle adds a one carbon group to a five carbon group using carbon fixation. Rubisco is in charge of this new molecule. Then ATP and more enzymes are used to continue to change the shape of the carbon molecule. NADP is created and so is ADP. The NADPH it hen brings the hydrogen to the carbon and oxygen to form glucose. It takes about six cycle in both systems to create it. 
Overall, these different molecules are bonded together through the use of ATP, electron transport chain, and enzymes in order to create energy for the organism to use . 

Hardy Weinberg problems make up

Here are some things to remember when solving Hardy Weinberg problems:
  • p2 + 2pq + q2 = 1 and p + q = 1
  • p = frequency of the dominant allele in the population
  • q = frequency of the recessive allele in the population
  • p2 = percentage of homozygous dominant individuals
  • q2 = percentage of homozygous recessive individuals
  • 2pq = percentage of heterozygous individuals
  • remember to check what the problem really wants you to solve for
Example Problem from : http://www.k-state.edu/parasitology/biology198/hardwein.html

You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate the following:
----The frequency of the "aa" genotype.
So we know the "aa" must be the recessive allele so that means q^2 is 36% because q^2 is the population

----The frequency of the "a" allele.
Now to find the allele frequency, we first have to take the square root of .36 (36%). This means that the allele frequency is 0.6 or 60%   

----The frequency of the "A" allele.  
This allele frequency can be calculated by using the equation:     p + q = 1  Then we plug in the information. q=0.6 which means p must be 0.4 or 40%

----The frequencies of the genotypes "AA" and "Aa."
We must use the  equation:p2 + 2pq + q
Then we plug in what we know  P=.4 Q= .6 p^2 = .16  q^2 = .36. So now we know that the frequency of the genotype "AA" is 16%. Now we plug in P and Q in order to solve for 2PQ = 2(.4)(.6)= .48
This means that the allele frequency for "Aa" is 48%

If you are still confused, watch this video: https://www.youtube.com/watch?v=xPkOAnK20kw


Wednesday, May 14, 2014

Plant Transpiration Lab

https://docs.google.com/spreadsheets/d/15JuPRY_mvZSS1zNies8b-cnYrgz9bdzNssRGYmUWd1Q/edit?usp=sharing

The link above is where my table can be found.

Lab Questions:


  1. Transpiration is the process where a plant takes in H2O and CO2 and creates glucose (or sucrose) with the help of light energy. The two forms of light energy are wavelength 680 and wavelength 700. This energy first excites the electrons and pushes them into a higher energy level. At the same time, H2O is split, releasing CO2. The electron is then taken to the electron transport chain by a transport protein. Some ATP is created but it is not enough to sustain the plant. Then the electron is taken to another protein receptor. The carbon is put into the Calvin cycle where it is joined together with a five carbon group. It will eventually create ATP.

2. The experimental controls were the timer, temperature, and how the plant was set up.

3. The fan and heater created the most  noticeable increase in the amount of transpiration that occurred in each plant. No, some plants were not well adapted to all of this molecular movement. Some did better with the heater than with the fan.

4. The fan created the largest amount of change because it added more molecular movement to the process of transpiration.

5. The Rubber Plant and the Zebra Plant has the highest transpiration rate. Each plant had a different rate because each is adapted to a specific biome.

6. If the plant's stomata were on the top, then the release of O2 and H2O would be slowed. Also, the intake of light would be less because the wavelengths would also have to go through the jelly.

7. The plant must loose water through transpiration because the weight of the water could weaken the stems. Additionally, too much water could throw of the balance of homeostasis in the plant.

Thursday, May 8, 2014

Plant hormones: Auxin, Abscisic Acid, and Ethylene


Plants need hormones just like we do in order to continue homeostasis.






Auxin is a hormone in charge of  mainly growth (cell elongations) but also has other functions such as:
- elongation of cells
- root growth 
- cell division 
- stimulate flower growth
- stimulate fruit growth 
- promote the creation of ethylene

And much much more. Information can be found at: http://www.plant-hormones.info/auxins.htm






The next hormone I will describe is Ethylene. This hormone is gaseous that is mainly in charge of fruit ripening. It also has one of the
simplest structures. 
This hormones functions are: 
- stimulate root growth 
- stimulates fruit to ripen 
- induction of femaleness in dioecious flowers 
- stimulates flower opening 
And more. Information found at: http://www.plant-hormones.info/ethylene.htm




The last hormone is Abscisic Acid. This hormone is mainly in charge of abscission of fruits and bud dormancy. 
This hormones functions are:
- inhibit shoot growth but doesn't affect roots as much
- Induces seed to store protein 
- induce maintenance dormancy 
- stimulates closure of stomata 

Information from:  http://www.plant-hormones.info/abscisicacid.htm


Sunday, May 4, 2014

Flower Day!!!

Flower Observations

Flowers have both male and female parts. They can either reproduce by the transfer of their pollen on insects or animals, or they can reproduce themselves. The Female parts are the pistil which is a group of carpels. Each carpel has an ovary that makes the ovules (the eggs that can be fertilized). The male reproductive parts of the flower are stamens. They are made up of an anther and a filament. The anther creates pollen. The pollen will then either be transferred or will it will fertilized  the eggs already present.   The fertilization of an ovule is called pollination. The ovules will then develop into seeds in the ovary. The flowers that have both male and female organs are called perfect flowers. The flowers that only have single sex organs are called imperfect flowers.
 
My Observations:
This flower had soft colorful petals that seemed to attract insects. Their leaves were a dark green color l, probably to help absorb sunlight. The flowers on the bush were evenly spaced out on the branches. The bush was tall an almost seemed like a small tree. The reproductive organs are protected by the petals allowing insects to have access.  


This flower has large open head and mutiple flower heads are on a single stem. The petals are soft and colorful, attracting insects. Pollen can be found on the inside of the petals and on the anthers. The leaves are thin and small but there are many on the bush. 


This flower has soft petals and an open head. The flower hads are more spaces  out on the bush. The leaves are waxy and the stems have thorns on the for protection. The stamens are in the middle of the flyover head an are a yellow color. The scent of the flower is also very strong.


This flowering plant has tall towers of flower heads. They are a light purple flower protected by a hard casing with thorns.I couldn't find the the male reproductive organs but the female organs are clustered in the center. The stem of the plant has large leaves to collect a large amont of sunlight. The leaves also have a wxy coating on them. 

 
 
  This slower has soft petals with a few flower on the stems. The leaves are thin and stringy and have sharp edges. All the reproductive organs are in the center of the flower. The stems are easily bent and  malliable. The center of the flower seems to have small petals in the center of the flower. I think they might be to protect the stamens.