Answer:
The right answer is "2.30 g/ml".
Explanation:
Given:
Volume,
= 17 ml
Mass,
= 39 g
Now,
The density will be:
= 
By substituting the values, we get
= 
= 
The answer to your question is Nitrogen.
Answer:
Fossil B belongs to the same period as the trilobite
I believe the correct answer is option D. Corinthian is not one of the three main periods of Greek sculpture. Instead, it is Archaic, Classical and Hellenistic that are the main periods. Corinthian is the last developed of the three principal classical orders of ancient Greek and Roman architecture.
Answer:
A) Protein kinases activate enzymes by phosphorylating or adding phosphate groups to them. Protein phosphatases dephosphorylate or remove phosphate groups from enzymes, including protein kinases.
Explanation:
Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).
Phosphatases are enzymes with opposite function, they remove phosphate group from the protein causing different effect.
