Tissues are organized into organs.
Cells organized into tissues
Tissues organized into organs
Organs organized into organ system
A chromosome is made up of DNA, which has subunits called nucleotides.
The units of contraction within a muscle fiber are called sarcomeres. Sarcomeres are the basic functional and structural units of striated muscle tissue, composed of actin and myosin filaments. They are organized in a repeating pattern along the length of the muscle fiber, allowing for coordinated contraction and relaxation during muscle activity.
for this reason ceall are called structural and functional units of life
Biologically the answer is cell since a group of cells working together for a purpose is reffered to as a tissue. Since you are asking for the smallest level, phisically, it can also be atoms.
DNA and RNA contain functional units known as nucleotides, which are composed of a sugar, a phosphate group, and a nitrogenous base. ATP (adenosine triphosphate) contains functional units called phosphate groups, which are crucial for the transfer of energy in cells.
cell
Unicellular organisms. Tissues are formed by specialized groups of cells in multicellular organisms to perform specific functions, but unicellular organisms are not composed of different types of cells that can organize into tissues.
All tissues in the body are made up of cells. Cells are the basic structural and functional units of living organisms and are organized into specialized groupings to form tissues with specific functions.
They are genes.
A chromosome is made up of DNA, which has subunits called nucleotides.
An organism is organized from smaller units like cells, tissues, organs, and organ systems, to the whole organism. Cells are the basic structural and functional units of an organism, which come together to form tissues. Different tissues work together to form organs, and organs combine to create organ systems that function as a whole organism.
Functional units of heredity are called genes. Genes are segments of DNA that contain instructions for building proteins, which determine an individual's traits and characteristics.
Cells are the basic functional units of living things. A groups of cells together forms a tissue. A group of tissues together forms an organ.
Cells are the basic functional units of living things. A groups of cells together forms a tissue. A group of tissues together forms an organ.
organelles
The units of contraction within a muscle fiber are called sarcomeres. Sarcomeres are the basic functional and structural units of striated muscle tissue, composed of actin and myosin filaments. They are organized in a repeating pattern along the length of the muscle fiber, allowing for coordinated contraction and relaxation during muscle activity.
for this reason ceall are called structural and functional units of life