You could have made sure the books were the same weight and your friends could have done it at the same time as you
Answer: Tightly wound chromosomes, composed of DNA, must unwind before replication. Cell replication splits a cell into two parts, both of which become new, fully functioning cells. Before this can happen, however, cells require a full complement of DNA for each of the new daughter cells that will form as a result of the split. Because of this, DNA makes a copy of itself in a process known as replication during interphase, a stage that occurs before cells divide.
Cell Phases: Mitosis is the process by which parent cells each divide into two identical daughter cells. However, this majority of the cell's time is spent in interphase, during which it performs normal metabolic functions necessary for the organism, such as manufacturing protein. DNA occurs during the S phase of interphase, sandwiched between the G1 and G2 phases. The cell uses checkpoint signals to ensure at the end of G1 that it is big enough to replicate and at the end of G2 to determine whether or not DNA replication has succeeded. If so, the cell can undergo mitosis, at which point DNA winds up tightly for easy transport during the process.
DNA Replication: Replication begins with DNA unwinding and unzipping, its two strands coming apart. While only one side is the “correct” code, containing the actual genetic information used to build the organism’s proteins, both can be the base for a new strand of complete DNA. The enzyme DNA polymerase matches up each base with the correlating base: adenine with thymine and guanine with cytosine. When each pre-existing base has been matched to a nucleotide, which also contains the sugar and phosphate of the DNA’s backbone, the strand is complete.
Caspian sea
Explanation:
The Caspian sea is actually a very large lake. It is called an endoheric lake in that it does not flow outwards.
- The Caspian sea is completely surrounded by land in all sides
- It is located in Asia and bordered by Iran, Kazakhstan and Azerbaijan.
- It is an inland, saline lake.
- It is the world's largest inland body of water.
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Answer:
Hormones communicate between plants and signal to ripen further the release of ethylene helps in this ripening as well.
Explanation:
- When a green banana is placed closely to a brown banana it will ripen more quickly and would turn yellow because the brown banana releases a chemical called ethylene.
- Ethylene is gaseous is nature and is thus, able to affect plants that lie close to it and this is the reason why ethylene is known as a fruit ripening hormone.
- The amount of ethylene increases in fruits as the fruit further ripens and hence, when placed next to a brown banana the green banana will ripen more quickly and turn yellow.
