What do isobars represent on a weather map?

netineya [11]

<span>The correct answer is Energy is lost as heat in each stage, causing the amount of energy available to decrease with each stage. This means that eventually energy is bound to run out. Simplest example is a car for example, as long as it works there's less and less fuel, and eventually the energy runs out, or in this case the fuel.</span>

7 0

3 years ago

Read 2 more answers

You wish to produce a human enzyme, protein A, by introducing its gene into bacteria. The genetically engineered bacteria make l

Blizzard [7]

Answer:

The options A, B, and D are all valid.

Explanation:

The reason is that some proteins require molecular chaperones if they are to fold properly within the environment of the cell. In the absence of chaperones, a partially folded polypeptide chain has exposed amino acids that can form non-covalent bonds with other regions of the protein itself and with other proteins, thus causing nonspecific aggregation of proteins.

The option A) is correct because the protein you are expressing in bacteria is being made in large quantities, it is possible that there are not enough chaperone molecules in the bacterium to fold the protein. Expressing the protein at lower levels might increase the amount of properly folded protein.

The option B) is correct as urea should solubilize the protein and completely unfold it. Removing the urea slowly and gradually often allows the protein to refold. Presumably, under less crowded conditions, the protein should be able to refold into its proper conformation.
The option C) is not correct as treating the aggregate with a protease, which cleaves peptide bonds, will probably solubilize the protein by trimming it into pieces that do not interact as strongly with one another; however, chopping up the protein will also destroy its enzymatic activity.
The option D) is correct because overexpressing chaperone proteins might increase the amount of properly folded protein.
The option E) is not correct as heating can lead to the partial denaturation and aggregation of proteins to form a solid gelatinous mass, as when cooking an egg white, and rarely helps solubilize proteins.

7 0

3 years ago

Explain why humans gametes have 23 chromosomes

PtichkaEL [24]

error loading answer

6 0

3 years ago

What are the orders of the kinds of crust from youngest to oldest

PtichkaEL [24]

One of the most commonly used methods of analysing the age of a certain crust is through analysis of its isotropic composition, such as the presence of the elements of tellurium and selenium. However, by general principle, the continental crusts are considered to be much older than the oceanic crusts.

5 0

3 years ago

Water’s poler properties allow it to dissolve a wide range of compounds and assist these molecules with moving into and out of c

Anika [276]

im a rebel. cant wait to get banned. dont worry mods this is an alt. lol

5 0

3 years ago