Question

pleade anser this of question 14 and 15

Answer 1

Origin of life starts from a cell. All activities in d body depend on functioning of cell. All cells arise from preexisting cells.

Kinetic energy is d energy possessed by a body by virtue of its state of rest.

Answer 2

Answers:

14.A cell is capable of carrying out all the life functions, such as nutrition, excretion, respiration, etc. Hence a cell is called the functional unit of life. The cell is the smallest unit of life and all the living beings are made up of cells. Hence a cell is called the structural unit of life.

15.The energy of an object in motion is called kinetic energy. Kinetic energy is defined as the energy needed for an object to accelerate from a resting position to its current velocity. To calculate kinetic energy, we use the formula kinetic energy = 1/2 mass x velocity² (½mv²).