The four main macromolecules are carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates typically are used for energy production within the body, lipids are used for energy storage, proteins are typically used for structural support in things like your hair or nails, and nucleic acids are used for storing genetic material.
Answer:
A. keeping the strands separated during replication
Explanation:
Prior to the process of DNA replication, the double-stranded DNA must first be separated into single strands by an enzyme called DNA helicase. This is done so that each DNA strand can serve as template for the synthesis of another.
After the unwinding and separation, the single strands still need to be kept apart during the synthesis of new nucleotides by DNA polymerase. This role of keeping the strands separated during replication is carried out by SINGLE STRAND BINDING PROTEINS.
Answer:
Explanation:
Used nuclear fuel can be recycled to make new fuel and byproducts. More than 90% of its potential energy remains in the fuel, even after five years of operation in a reactor. The United States does not currently recycle used nuclear fuel but foreign countries, such as France, do.
Explanation:
Su cantidad y diversidad son enormes. Hay entre 85.000 y 150.000 moluscos, de los cuales el 80-85 por ciento son gasterópodos. Por lo tanto, el mundo alberga más de 60.000 especies de ellas. Los caracoles terrestres varían mucho en tamaño.