An ionic bond results in an exchange or transfer of electrons between the 2 different types of atoms, most likely the metal atom and nonmetal one.
For example the compound NaF is held together by electrostatic forces of positive and negative charges due to the transfer of electrons from the sodium to fluoride atom.
Both transcription and DNA replication are essential and significant genetic mechanisms.
Transcription is a process where the genetic material i.e. DNA is getting converted or transcribed to RNA by an enzyme RNA polymerase.
Whereas the DNA replication is a process where, doubling or copying of DNA from original DNA (identical replica copies). Which is the basis for biological inheritance.
B. Absolute dating uses the half-life of an element
Absolute dating is a technique that uses radioactive minerals present in rocks and fossils while relative dating compare the sample in terms of age difference. However, absolute dating is more accurate because it uses half-life of an element and provides dates in years.
Answer:
The calcium concentration must be greater OUTSIDE
the cell than INSIDE the cell.
Explanation:
Calcium has a vital role in the body, it is necessary for:
- exocytosis
- muscle contraction
- normal excitability of neurons
- blood coagulation
- building and maintaining bones and teeth
- enzymatic activity
Hemoglobin is an important component of red blood cells that functions in transporting majority of oxygen in the body. One hemoglobin can bind to up to four oxygen molecules because of its four subunits. If the oxygen carrying ability of hemoglobin is decreased, carbon dioxide and temperature will increase and pH will decrease.
