Question

In humans, mitochondria will be most abundant amongst the following
A. Liver cells
B. Kidney cells
C. Pelomyxa (giant amoeba)
D. Cardiac muscle cells

Answer 1

Hint: Mitochondria are cell organelles concerned with the process of aerobic respiration. All of the cells in the human body are cardiac muscle cells with about 5,000 mitochondria per cell that contain far more mitochondria than any other organ in the human body.

Complete answer:
A cardiac muscle cell is an example of a eukaryotic cell because cardiac muscle cells are the muscle cells that make up cardiac muscle. Each cardiac cell contains myofibrils, which are specialized organelles of long chain sarcomeres, it’s a fundamental unit of muscle cells.
Role of mitochondria in muscle cells is an essential organelles double membrane that has their own maternity inherited DNA. Thus, the correct answer is option D.
Option (A)is incorrect as the most abundant organelle in liver cells is not mitochondria, smooth endoplasmic reticulum mostly occurs. Where it contains enzymes that metabolise various lipid-soluble compounds. The smooth Endoplasmic reticulum is involved in multiple aspects of the metabolism of lipids.
Option (B) is incorrect because in kidney cells in particular, organelle stress such as decreased proteostatic activity in the endoplasmic reticulum and altered energy metabolism in mitochondria. Option (C) is incorrect because of this is a giant anaerobic amoeba, characterized by a number of exceptional cytological and physiological features, among them the presumed absence of energy producing organelles and the presence of endosymbiotic bacteria.

Hence, the correct answer is option (D).

Additional information:
The total number of mitochondria reflects the energy requirement of a cell. Cardiac muscle cells need extra demand for ATP to keep the heart pumping.

Note: Mitochondria functions as a power plant by producing and distributing energy across a power grid. Mitochondria occurs in proportion to cell function and purpose, the plentiful mitochondria in muscle cells is an example of enabling an organism to react quickly, which can be particularly helpful when fleeing a predator.