Battery.
A battery is a device that converts chemical energy into electrical energy. A group of voltaic cells connected together in series or parallel form a battery.
Battery
a blank is a group of solar cells connected to from a large flat surface
Tissue
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Cells that live as a connected group but do not depend on each other for survival are called colonial organisms.
A collection of cells that function together makes up a tissue. A collection of tissues that function together makes an organ.
A cell or group of cells producing electrical current is called a battery. It generates electricity through a chemical reaction that releases electrons, creating a flow of electric charge.
a group of cells together make tissue a group of tissue together make an organ and a group of organs make an organ system which make the organism
"series" ... high voltage
A group of dry cells connected together with their positive poles pointing in the same direction is called a battery. When multiple dry cells are connected in series, their voltages add up to provide a higher total voltage output. This arrangement is commonly used in various electronic devices to power them efficiently.
A group of nerve cells is called a "neuron" or "nerve cell cluster". These cells are fundamental units of the nervous system and work together to transmit electrical and chemical signals throughout the body.