The Adenosine triphosphate (ATP) molecule is the nucleotide known in biochemistry as the "molecular currency" of intracellular energy transfer; that is, ATP is able to store and transport chemical energy within cells.
The answer is graduated cylinder.
Dani requires a graduated cylinder to measure
the volume of the pebbles. A graduated cylinder is actually laboratory
equipment to measure the volume of a liquid. Dani must place a specific amount
of liquid in the cylinder and record the amount. Dani will then put the pebbles
inside the cylinder and subtract the amount of liquid previously recorded to
the current amount to get the volume of the pebbles.
The correct answer is option 4, that is, muscle cells require more energy, so they have more mitochondria in comparison to the skin cells.
Mitochondria are the powerhouse of the cells. The synthesis of ATP takes place in them, that is, the energy currencies of the cell. The cells of the muscles need to work hard and thus require ample energy, for this, they need more concentration of mitochondria to generate a high energy yielding ATPs.
Plant cells have cell wall but animal cells don't have any cell wall.
