what is the smallest functional and structural unit of life

The smallest worker in the nervous system is the neuron. There is one preganglionic neuron for each of the chain of impulses, or one before the cell body or ganglion, that is like a central controlling body for numerous neurons going out peripherally.

What is structural and functional unit of neuron?

Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites). … Dendrites are short and act to receive impulses from other neurons, conducting the electrical signal towards the nerve cell body.

What are three features that define a cell as the smallest unit of life?

In biology, the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.

Which of the following represents the smallest unit of a polymer *?

Explanation: Polymers are large molecules composed of repeated chemical units. The smallest repeating unit is called a mer.

What’s the smallest basic unit of matter?

atom
atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.

What is the smallest unit of a compound?

molecule
For compounds consisting of covalently bound atoms, a molecule is the smallest unit of the compound that maintains the properties of that compound. So, we can have one molecule of water, which is also a compound.

What is the smallest unit of organization in an ecosystem?

Description. Ecosystems are organized to better understand the frame of reference in which they are being studied. They are organized from smallest to largest; organism, population, community, ecosystem.