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How old does a zygote have to be to get stem cells?
In order to obtain stem cells, an embryo must be in the blastocyst stage.
What determines the range of a thermometer A. length of stem B. volume of bulb C. thickness of bulb D. volumn of stem?
None of the above
Does mercury in a thermometer go bad?
No. But glassware is not a crystalline rigid material, and has some memory of recent thermal movement. Thermometers that have been calibrated at manufacture, will have a couple of tiny scratch marks along the scale, and the graduations in between are interpolated. If you wish to calibrate a thermometer, then do so at the triple point (close to 0 deg C), and at boiling point - 100 degree C. Since much of the stem of the thermometer has been at 100 degree C, straightaway after removing from the steam, the glass tube will shrink, and the reading will change due to this, as well as the mercury column cooling. For a thermometer to be a precision measuring device, the bore has to be accurately true, and this is not always the case. Ordinary mercury thermometers are seldom to be relied upon for better than 1 degree C resolution.
Do LED's have polarity?
Yes they do - it means the long stem is positive and must be connected to positive wires and the short stem to negative wires
What are the ethnics of using stem cells?
The use of stem cells is not unethical in and of itself, the ethics component revolves around the source of the stem cells and the concern that fetuses will be produced and intentionally destroyed in order to obtain stem cells.
How old does a zygote have to be to get stem cells?
In order to obtain stem cells, an embryo must be in the blastocyst stage.
What is the difference between a stem thermometer and a candy thermometer?
A stem thermometer is used to measure the internal temperatures of foods, especially meats. Stem thermometers have a "stem" that is inserted into the food and a flat round "face" at the top that may be digital or dail. Candy thermometers are used to measure the heat of candy while it is cooking. They are large straight tubes similar to thermometers used to take body temperature. They have a clip that enables the cook to clip it to the pan.
What determines the range of a thermometer A. length of stem B. volume of bulb C. thickness of bulb D. volumn of stem?
None of the above
Why is the stem of a thermometer designed like a magnifying glass?
So you can read it more easily.
Why is the stem of thermometer made up of glass?
To enable you to read the level the fluid has reached
Why does the substance in the thermometer stem rise up?
The substance in the thermometer (traditionally mercury (Hg)) rises up because of thermal expansion. As the substance heats up, it expands.
Why do you rotate the stem of the clinical thermometer when you read the thermometer?
If it is an analog thermometer, the face of the thermometer is shaped in a way that magnifies the readout, but it has a very narrow angle of visibility. Once rotated to the proper angle, the once thin line becomes a thick, easy to read line.
Why is the glass stem on a clinical thermometer designed to act like a magnifying glass?
The stem of the thermometer is not perfectly round for two reasons. One so it will not roll off and fall, and two, the flat area acts as a magnifying glass to make the hollow shaft in the stem appear larger.
What is a Bimetallic stemmed thermometer?
basically, a Bimetallic Stemmed thermometer is a thermometer that is used when cooking meats- like turkey (well turkey is poultry, but that is not the point) . They have a long stem that you poke into the meat and there is a dial on the top that tells you how hot the inside of the meat is.
Why a mercruy in a glass thermometer holes up a uniform stem?
because it is cheap and it does not expand on heating therfore it doesnt break
What is the proper way to take the temperature of vacuum packed food?
The proper way to take the temperature of vacuum packed foods is with a metal stem thermometer. To take the correct temperature, put the thermometer in the center of the food.
How should you do to increase the accuracy of the thermometer?
using a thin capillary bore using a thick glass stem
