Channel proteins that form a narrow passageway in gap junctions are known as <span>connexons
</span><span>Connexons are assemblies of six proteins that form a pore or a narrow passageway between the cytoplasm of two adjacent cells.
These passageways allow the bidirectional passage of iron and signals between the cells. </span>
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Answer;
The above statement is true;
When fasting continues long beyond glycogen depletion, body protein will be broken down to make glucose,
Explanation;
When the body runs low on fuel, it utilizes the stored glycogen in the liver and muscle, which is the primary source of stored energy. The after the depletion of glycogen the body burns fat, and if fasting continues the body begins to break down non essential proteins for energy. protein is the last source of stored energy available to the body.
Yes, it is one of the essential elements to life
Answer:
The correct answer will be option-They have about the same endurance as skeletal muscle fibers.
Explanation:
Cardiac muscle is one of the three types of muscle which is present in the Heart of the organism.
The muscle fibres of the cardiac muscle possess a high amount of myoglobin- an Oxygen carrying molecule which can store the oxygen for some time.
The cardiac muscles have to pump blood in the body, for which they require a high amount of ATP, so they possess larger mitochondria.
The studies have shown that the cardiac muscles store glycogen carbohydrate which is used during the relaxation phase in stress conditions.
Since the cardiac muscles do not have the same endurance as the skeletal muscles which with physical exercise can be increased therefore the selected option is the correct answer.
