Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
Epithelial tissue I think this is correct
Answer:
Na+ only
Explanation:
Depolarisation of membrane refers to the change in the resting membrane potential of the membrane of a cell which is usually -70mv to a more positive value.
This value changes when the positive ions move inside the cell which increases the positive charge inside the cell.
In the myocardial cell, the sodium ions move inside the cell which changes the potential towards the more positive side as a result of which the signals for contraction arises.
Thus, Na+ only is correct.
Answer:
inter-phase
Explanation:
The Eukaryota cell spends most of its "life" in inter-phase of the cell cycle, which can be subdivided into the three phases, G1, S and G2. During inter-phase, the cell does what it is supposed to do. Though cells have many common functions, such as DNA replication, they also have certain specific functions.
