Answer:
A.
Explanation:
The β-sheet is a twisted pattern in which the protein strands are laterally linked through hydrogen bonds. These β-sheet motifs are segments of 3 to 10 amino acids that are specially configured to form beta antiparallel strands. In β-sheet regions, the hydrogen bonds are localized among carbonyl and amino groups of the polypeptide backbone, and side chains (i.e., the R groups) are extended up and down in the plane of the β-sheet.
Answer:

Explanation:
Hello,
In this case, considering that the density of a body is computed given its mass and volume:

Taking into account that the mass is 24.32 g and the volume is computed via the difference between the volume of the water with the brass and the volume of water by itself as follows:

The density of the piece of brass turns out:

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Density is defined as mass per unit volume so even when you cut an object in half unit volume does not change so each part would have a different density even if it’s cut into the same pieces
It would be 100.60 because we're adding like to the atmosphere it connects to lubricator and then it turns so that's 100.60
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Chemical reactions can be detected by changes in : Temperature and color
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