All of the above because you didn't send us a image for reference..
I think it’s tissue I just did it
Answer:
The A option is the correct answer: Non-native disulfide bonds form after beta-mercaptoethanol is removed, so the protein cannot refold correctly
Explanation:
Beta-Mercaptoehanol is responsible to reduce the four disulfide bonds present in ARNase; Urea deals with non covalente bonds. In presence of both ARNase is denatured.
If Urea is first removed by dialysis, and later is removed Beta-Mercaptoethanol, the enzyme recovers ist activity.
If Beta-Mercaptoethanol is first removed, disulfide bonds different from native use to be formed. As a result ARNase is not an active enzyme
Answer:
A. Iodine
Explanation:
First 2 points describe it's physical properties. Even if we don't remember them, we can easily figure out the answer to be a non-metal. As, non-metals usually have lower bp and mp than metals.
Both Iodine and hydrogen exists as a 2 atom molecule in gas phase.
But only elements of group 17 (halogens) have 7 electrons in their outer shell.
Again, salts are usually ionic compounds, formed by atoms with a greater difference in their electronegativities. Hence, the one that forms bonds with a metal to form a salt readily can be a non- metal.
All these points indicate that the element must be iodine.
Answer:
Pipe racks are construction in chemical and other industries plants, that support the pipe line, electric cables and instrument cable.
Explanation:
The pipe racks also used to support mechanical equipment as valve and vessels. You can transfer material between equipment and sorage or utility areas. Pipe racks aren´t only non-building constructions that have similiraties to the Steel buildings but also have additional loads style. The requirements found in the building codes apply and dictate some of the design requirements.
Some industry references exist to help the designer apply the intent of the code and follow expected engineering practices.
Pipe racks have design criteria: In most of the United States, the governing building code is the International Building Code.
Includes:
*Dead Loads
*Live Loads
*Thermal Loads
*Earthquake Loads
*Wind Loads
*Rain Loads
*Snow Loads
*Ice Loads
*Load Combinations
Also have Design Considerations:
*Layout
*Seismic
*Seismic System Selection
*Period Calculations
*Analisys Procedure
*Selection
*Equivalent Lateral Force Method Analysis
*Modal Response Spectra Analysis
*Drift
*Seismic Detailing Requirements
*Wind
*Pressures and Forces
*Coatings
*Fire Protection
*Torsion on Support Beams
