Question

Classify the following into cells, tissue, and organs: skin, fat cell, RBC, blood, ear, muscle.

Answer 1

Hint: Cells are the smallest, structural, and functional unit of an organism. Tissues are distinct types of material consisting of specialized cells and their products. Red blood cells (RBCs) are also referred to as red cells.

Complete answer:
Cell - fat cell, RBC Tissue - muscle, blood, Organ - skin, ear. An organ in a multicellular organism is a collection of tissues that are grouped in order to carry out a particular function. Each tissue in an organ consists of similarly specialized cells. Cells are the structural and functional unit of life. Cells make up tissues, tissues make up organs, and organs make up organ systems. Living organisms are formed of cells and cell products. Adipocytes, also known as lipocytes and fat cells, are the cells that primarily compose adipose tissue, specialized in storing energy as fat. RBCs are a type of blood cells formed in the bone marrow. Muscle is a soft tissue found in most animals. Blood is both a tissue and a fluid. It is a tissue because it is a collection of similarly specialized cells that serve particular functions. The skin is a vital organ that covers the entire outside of the body. The ear is the organ of hearing and, in mammals, balance.

Additional Information:
- Cells contain hereditary material that is transmitted from one generation to the next during cell division. Cells originate from pre- existing parent cells by cell division.
- The functional properties of an organism depend upon the functional properties of its cells.
- Cells of the organisms of the same or closely related species may be similar in form, structure, and composition.

Note:
- Skin is the largest organ in the body. It forms a protective barrier against pathogens and injuries from the environment.
- Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell.
- Blood is a tissue because it is a collection of similarly specialized cells that serve particular functions.