Write an abstract for this experiment. An abstract is a short paragraph (three to five sentences) that communicates the purpose of the experiment and states the specific conclusions determined by the experiment. Do not go into detail about the protocol. The purpose of this experiment was to measure the optimal pH and temperature at which a phosphatase enzyme from an alfalfa sprout would work. Different pH buffers were created in which the optimal pH would be tested. Different temperatures were tested using a singular buffer. After the experiment was complete, phosphatase activity was measured based on the values of absorbance at 490 nm.
A student added sodium carbonate to a reaction tube and the color remained clear. Propose three specific reasons why they saw no color change.
The student may have no added any of the substrate into the solution. The student may have forgot to add the enzyme to the solution. The student may have denatured the enzyme before putting it into the tube.
Increasing the temperature of a chemical reaction generally favors product formation. Propose a hypothesis for why the 75oC reaction conditions did not produce the most activity.
A vegetative storage protein (VSP2) from the model plant Arabidopsis thaliana (At) was purified as a wild-type (AtVSP2) and a recombinant protein (Nus-AtVSP2). D119E is an aspartic acid to glutamic acid substitution at amino acid position 119. The phosphatase activity was measured under different pH conditions (adapted from Liu et. al. Plant Physiol. 2005;139:1545-1556).
What scientific conclusions can be made about the adding the Nus recombinant tag to AtVSP2? (Do not just describe the graph. A scientific conclusion should include an interpretation of the data.)

Mantle convection  is the slow  creepingmotion of earth's solid silicate  mantle  caused by  convection  currents carrying  heat from the interior  to the planet's surface.[1][2]  the earth's surface  lithosphere, which rides atop the  asthenosphere  (the two components of the  upper mantle), is divided into a number of  plates  that are continuously being created and consumed at their opposite  plate boundaries. accretion occurs as mantle is added to the growing edges of a plate, associated with  seafloor spreading. this hot added material cools down by  conduction  and  convection  of heat. at the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of  subduction  usually at an  ocean trench.[3]this subducted material sinks through the earth's interior. some subducted material appears to reach the lower mantle,[4]  while in other regions, this material is impeded from sinking further, possibly due to a phase transition from  spinel  to  silicate perovskiteand  magnesiowustite, an  endothermic reaction.[5]the subducted oceanic crust triggers  volcanism, although the basic mechanisms are varied. volcanism may occur due to processes that add buoyancy to partially melted mantle causing an upward flow due to a decrease in density of the partial melt.secondary forms of convection that may result in surface volcanism are postulated to occur as a consequence of intraplate extension[6]  and  mantle plumes.[7]it is because the mantle can convect that the  tectonic plates  are able to move around the earth's surface.[8]mantle convection seems to have been much more active during the  hadean  period, resulting in gravitational sorting of heavier molten  iron, and  nickel  elements and  sulphides  in the core, and lighter  silicate minerals  in the  mantle.

U. life is what you go through to become a better person. it makes you stronger, wiser, and more creative. it can be hard but its ok. because i believe everyone was put here for a reason. whether or not you know that reason you should always look towards the future and trust in god for a better tomorrow.be safe and blessed