enzymes are biological catylsts, so they speed up reactions inside our body. eg. in the digestive system
2007-01-27 03:55:56
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answer #1
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answered by st1991_01 1
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These substances are both proteins, they are coded for by DNA. They both fit together with their target by a lock and key fit, in other words their form or shape is very important to the way they function and mutation in the DNA can affect that shape. But hormones are informational molecules, inother words they travel through the blood to signal distant parts of the body to do
something. Human growth hormone signals cell division and bone growth. It only works on cells that have the proper receptor or "docking station" on their surfaces. Enzymes are catalysts, they make chemical reactions go faster than they normally would so metabolism can take place at a useful rate.
2007-01-27 06:31:28
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answer #2
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answered by rajeev_iit2 3
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There's different types of hormones w/ different purpuses. Enzymes act as catalys which speed up reactions. Enzymes are also used to cut out certain pieces of DNA that are replaced by a different sequence of DNA. Hormones regulate certain functions in the body such as growth.
2007-01-27 03:57:42
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answer #3
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answered by Steph 4
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1 some are pink and others are round.
2 some are long and others are flat.
3 some are dense and others are smooth.
4 some are nice and others are fat.
5 some are clever and others are square.
Haha, I'm having trouble getting one, but I've just started human body systems. The first is a chemical transmitter and the second is a catalyst. Haha.
2007-01-27 03:59:30
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answer #4
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answered by Put_ya_mitts_up 4
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Agent Orange was made from a mix of 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T). It was later discovered that a harmful toxin was produced during the manufacturing of 2,4,5-T - 2,3,7,8-tetrachlorodibenzo-para-dioxin (TCDD). This toxin was found to be highly carcogenic. Because this toxin gets mixed in with the 2,4,5-T during the manufacturing process, 2,4,5-T has been banned in the US as a herbicide. Therefore, Roundup would not contain this chemical but may contain 2,4-D. However, the manufacturer of Roundup does not release the full chemical contents of the product.
2016-05-24 05:23:26
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answer #5
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answered by Anonymous
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hormone is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms produce hormones (including plants - see article phytohormone).
The best-known animal hormones are those produced by endocrine glands of vertebrate animals, but hormones are produced by nearly every organ system and tissue type in an animal body. Hormone molecules are secreted (released) directly into the bloodstream; some hormones, called ectohormones, are not secreted into the blood stream, they move by circulation or diffusion to their target cells, which may be nearby cells (paracrine action) in the same tissue or cells of a distant organ of the body. The function of hormones is to serve as a signal to the target cells; the action of hormones is determined by the pattern of secretion and the signal transduction of the receiving tissue.
Most hormones signal a cell change by combining with a receptor. For many hormones, including most protein hormones, the receptor is embedded in the membrane on the surface of the cell. The interaction of the hormone and the receptor typically triggers a cascade of secondary effects within the cytoplasm of the cell, often involving phosphorylation or dephosphorylation of proteins, changes in ion channels, or increased amounts of an intracellular molecule that serves as a second messenger (e.g., cyclic AMP). The second common type of mechanism, typically involving smaller-sized hormones such as steroid or thyroid hormones, begins with entry of the hormone molecule into the cytoplasm of the cell where it combines with a loose and mobile receptor. The combined hormone-receptor ligand then moves across the nuclear membrane into the nucleus of the cell and binds to the DNA, effectively amplifying or suppressing the action of certain genes, thereby affecting protein synthesis.
Hormone effects vary widely, but can include stimulation or inhibition of growth, induction or suppression of apoptosis (programmed cell death), activation or inhibition of the immune system, regulating metabolism and preparation for a new activity (e.g., fighting, fleeing, mating) or phase of life (e.g., puberty, caring for offspring, menopause). In many cases, one hormone may regulate the production and release of other hormones. Many of the responses to hormone signals can be described as serving to regulate metabolic activity of an organ or tissue. Hormones also control the reproductive cycle of virtually all multicellular organisms.
Enzymes are proteins that catalyze (i.e. accelerate) chemical reactions. In these reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts these into different molecules, the products. Almost all processes in the cell need enzymes in order to occur at significant rates. Since enzymes are extremely selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell.
Like all catalysts, enzymes work by lowering the activation energy (ΔG‡) for a reaction, thus dramatically accelerating the rate of the reaction. Most enzyme reaction rates are millions of times faster than those of comparable uncatalyzed reactions. As with all catalysts, enzymes are not consumed by the reactions they catalyze, nor do they alter the equilibrium of these reactions. However, enzymes do differ from most other catalysts by being much more specific. Enzymes are known to catalyze about 4,000 biochemical reactions.[1] Not all biochemical catalysts are proteins, since some RNA molecules called ribozymes also catalyze reactions.
---------------Enzyme activity can be affected by other molecules. Inhibitors are molecules that decrease enzyme activity; activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. Activity is also affected by temperature, pH, and the concentration of substrate. Some enzymes are used commercially, for example, in the synthesis of antibiotics. In addition, some household products use enzymes to speed up biochemical reactions (e.g., enzymes in biological washing powders break down protein or fat stains on clothes; enzymes in meat tenderizers break down proteins, making the meat easier to chew).
2007-01-27 03:57:39
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answer #6
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answered by Anonymous
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This site will tell you what you need to know
http://www.jbc.org/cgi/content/full/278/45/44593
2007-01-27 03:56:07
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answer #7
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answered by Mary P 2
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You can't hear an enzyme.
You can hear a whore moan.
2007-01-27 03:56:13
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answer #8
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answered by Anonymous
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i cant answer your question but i hope there is someone here who can
2007-01-27 03:59:36
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answer #9
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answered by msijg 5
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