Biochemistry Task 4 Bridget Paget 540146 June 18th, 2016 Enzymes are active proteins that are catalyst which speed up chemical reaction. Without these enzymes chemical reaction would be too slow for the body to benefit from
Words: 1101 - Pages: 5
dissociated into hydrated protons and chloride ions. Therefore, in a titration with hydrochloric acid the active titrant species is the hydrated proton. This species is often written H3O+, although the actual form in solution is more correctly (H2O)nH+. For convenience we designate it simply H+. Carbonate in aqueous solution acts as a base; that is, it is able to accept a proton to form bicarbonate ion. 2CO3 + H+ HCO3 (1) Bicarbonate is able to combine with another proton to form carbonic acid:
Words: 2535 - Pages: 11
Bio 101 Review Sheet Test #1 (Chapters 1-3) Chapter 1 1. Cell is basic unit of life 2. Hierarchy of life figure 3. 3 Energy categories and examples of each Producer-plants and some microbes Consumer-humans and other animals Decomposer-fungi and other animals 4. Energy transfers are not 100% efficient – why? Cant capture all of the energy supplied by one source a. Where does all energy for biology come from? sun 5. Homeostasis- state of internal consistency or equilibrium
Words: 1102 - Pages: 5
no impact on their chemical properties. But, it does however affect the physical properties. Namely their mass. Whereas Hydrogen-1 has an atomic mass of 1amu, Hydrogen-2 has an atomic mass of 2, due to the presence of a neutron in addition to the proton within the nucleus. And Hydrogen-3 has an atomic mass of 3amu as a result of another additional neutron. Each isotope also differs in its’ nuclear binding energy, this is a result
Words: 1878 - Pages: 8
behavior of matter. Use 3 - 4 sentences in your explanation. 4. What parts of Dalton’s atomic theory no longer agree with the current picture of the atom? Provide an answer using 3 – 4 sentences in your own words. 5. If an element has 12 protons and 17 neutrons, how many electrons must it have? 6. Why are the atomic masses of elements usually decimal numbers? Provide an answer using 3 – 4 sentences in your own words. 7. In 3 – 4
Words: 584 - Pages: 3
by a process called triboelectrification which is explained through and atomic structure. All material objects are composed of atoms. Atoms have center’ the nucleus contains positively charged protons and neutral neutrons, have no electrical charge. Around the atoms are negative charged electrons. Protons and neutrons do not change, but electrons can move from one atom to another. Electrons are exchanged when two objects touch causing one object to become electrically positive and the other negative
Words: 526 - Pages: 3
Who discovered the Atom? In the 5th cent. B.C. the Greek philosophers Democritus and Leucippus proposed that matter was made up of tiny, indivisible particles they called atom, or in Greek "a-tomos". The reason why they assumed this is because nothing can come from nothing. Around 1803, John Dalton (1766-1844) developed the first useful atomic theory of matter. He imagined the atom as a sphere full of an electrically positive substance mixed with negative electron. Then in 1897, Thompson
Words: 541 - Pages: 3
charge increases. Moving down a group, the electronegativity decreases due to the longer distance between the nucleus and the valence electron shell, thereby decreasing the attraction, making the atom have less of an attraction for electrons or protons. Thus the electronegativity increases as we go from left to right () and from bottom to top in a period. Example :Fluorine has the highest electronegativity- 4 Oxygen has the 2nd most highest electronegativity- 3.5 Importance: More is the
Words: 548 - Pages: 3
History Back in the 1840s, the presence of granule-like structures within muscle cells and other cell types were being recognized by several scientists. (Ernster and Schatz 1981) In 1890, Richard Altmann, who was a cytologist, used a dye technique to detect the granules and termed them as “bioblasts.” He speculated that they were the basic units of cellular activity. (Ernster and Schatz 1981) It was in 1898 when Carl Benda gave these bioblasts a new the Greek name “mitochondria” meaning thread
Words: 2533 - Pages: 11
Enzymology and Catalytic Mechanisms GRT3 Enzymes are proteins that speed up chemical reactions. They are catalyst. Without catalyst, chemical reactions would still take place, but at a slower rate and the body wouldn’t benefit. All enzymes possess two essential properties. First, enzymes accelerate the rate of chemical reactions without being consumed and/or changed by the reaction. Second, enzymes accelerate reaction rates without changing the chemical equilibrium among reactants and products
Words: 1179 - Pages: 5
