Answer:
This is due to lactic acid accumulation in Emma's leg muscles.
Explanation:
In the absence of oxygen in the muscle cells, the cell switches from performing aerobic respiration to lactic acid fermentation. The lactic acid fermentation produces lactic acid as a product, which builds up in the muscle cells of the body causing a burning sensation and pain. This often happens during exercises.
This is the cause of Emma's pain in her lower leg muscles. Lactic acid has been formed and accumulated in the muscle cells of her leg during the exercise with her brother.
It is difficult to control all variables except the one being tested. Hope this helps.
<span>Digestive enzymes of diverse specificities and are found in the saliva secreted by the salivary glands, in the secretions of cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the secretions of cells lining the small and large intestines.</span>
They are the first organisms , usually plants that colonize barren rock or lava during succession. They physically break up the rocks, extract minerals, and provide organic matter that will decompose and become the soil for later successional species.
Answer:
The correct answer is the third option Cell.
Explanation:
The smallest functional unit of biological structure that fulfills the functional requirements of living in the cell. Cells are "building units of life".
The study of cells is termed as cellular biology or cell biology. Cells made up of cytoplasm covered by a membrane, which contains many biomolecules and cell organelle such as nucleic acids and proteins nucleus, endoplasmic reticulum and other.
Thus, the correct answer is the cell.
