How do you separate blood from plasma? Separate plasma by centrifugation. Transfer the serum, plasma or whole blood to a plastic transport tube (see Pediatric Specimen Tubes below)….PLASMA Draw 12 mL of whole blood for each 5 mL of serum or plasma needed. Centrifuge for at least 15 minutes at 2200-2500 RPM. Are there any […]
Why does hydrogen have multiple spectral lines?
Why does hydrogen have multiple spectral lines? Though a hydrogen atom has only one electron, it contains a large number of shells, so when this single electron jumps from one shell to another, a photon is emitted, and the energy difference of the shells causes different wavelengths to be released… hence, mono-electronic hydrogen has many […]
What is an example of positive and negative feedback?
What is an example of positive and negative feedback? Positive feedback occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly. Some examples of positive feedback are contractions in child birth and the ripening of fruit; negative feedback examples include the regulation of blood glucose […]
How accurate are Photogates?
How accurate are Photogates? Vernier photogates have an electronic timing resolution of 1 microsecond. You will, however, typically get measurements with as much as +/-25 millisecond variation. What is the usage of the Photogate? Use the Photogate to study free fall, rolling objects, collisions, and pendulums. Photogates allow for extremely accurate timing of events within […]
What happens if a solar panel breaks?
What happens if a solar panel breaks? Conventional solar panels break and degrade in efficiency and power output after micro cracks occur. This is due to the way they are designed; power is moved through thin conductors on the front of each cell. If these connections are broken due to cracks, the power is unable […]
How tight should tapered wheel bearings be?
How tight should tapered wheel bearings be? Snug the adjusting nut tight while turning the wheel or hub 10 complete revolutions. This is to set the bearing into position and let the grease find home. Loosen the nut just enough to remove all preload. It will now be just shy of finger-tight. What happens if […]
What are the steps in the process of photosynthesis?
What are the steps in the process of photosynthesis? It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 […]
What is the formation of CH3OH?
What is the formation of CH3OH? CH3OH and H2CO were formed as major products from the 100 eV electron-irradiated mixed CH4/H2O solid at 10 K. There found to be two pathways for the formation of methanol with about equal importance, i.e., the recombination reaction: CH3 + OH → CH3OH, and the insertion reaction: CH2+H2O → […]
What are the four types of seismic zones?
What are the four types of seismic zones? Based on the past seismic history, Bureau of Indian Standards grouped the country into four seismic zones namely Zone-II, Zone-III, Zone-IV and Zone-V. Of all these four zones, Zone-V is the most seismic active region whereas Zone-II is the least. What is earthquake and effects? The effects […]
What 3 molecules Cannot easily pass through the membrane?
What 3 molecules Cannot easily pass through the membrane? Small uncharged polar molecules, such as H2O, also can diffuse through membranes, but larger uncharged polar molecules, such as glucose, cannot. Charged molecules, such as ions, are unable to diffuse through a phospholipid bilayer regardless of size; even H+ ions cannot cross a lipid bilayer by […]