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;
The above statement is true.
Explanation;
-Genetics is the study of heredity and how genes are passed from one generation to another . It is among the factors that determine the body fat, others being; exercise, the basal metabolic rate and the basal metabolic index, nutrition, amount and type of activity, age, and sex among other factors.
- One can't change the genes he or she is born with, therefore some individuals are simply built to accumulate more or less fat. Genes can also affect where body fat accumulates as well.
Answer:
A. To reproduce
Explanation:
Cells divide in two stages: Meiosis - haploid cell division [½ number of chromosomes], and Mitosis - diploid cell division [same number of chromosomes]. Their objective is to produce offspring, which means reproduce.
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Answer:
Photosynthesis is a key part of the carbon and energy cycles by means of the atmosphere and the biosphere.
