Answer: An element is a pure substance that can not be broken into smaller particles.
Explanation: An element may comprises of two or more atoms that are chemically embedded or combined together. Elements are building blocks of matter, they are mostly abundant in the universe e.g Oxygen, Hydrogen, Carbon.
Answer:
d.They prevent the two parental strands from coming together again.
Explanation:
During the process of DNA replication, the two DNA strands should be separated from each other to serve as a template. To separate the two DNA strands, the helicase enzyme breaks down the hydrogen bonds between the complementary base pairs of the DNA strands. The process uses ATP as a source of energy.
Due to the presence of complementary base pairs, the separated DNA strands have a tendency to reanneal by the formation of hydrogen bonds. To prevent the reannealing of separated DNA strands, single stranded binding proteins bind to them. Binding to single stranded binding proteins to the separated DNA strands does not allow them to reanneal.
Answer:
All of the above
Explanation:
Americans rationed goods at home in order to provide more food for the soldiers in the war. Americans also worked in factories that produced many of the goods needed in the war (like guns, ammunition, etc). Americans also bought war bonds to give more money to the army.