What structures must be present for a cell to be considered living?

These include cytoplasm (a gel-like substance composed of water and dissolved chemicals needed for growth), which is contained within a plasma membrane (also called a cell membrane or cytoplasmic membrane); within the cytoplasm are one or more chromosomes, which contain the genetic blueprints of the cell; and ribosomes …

What defines cells as living structures?

A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks.

What are the functions of a living cell?

Cells provide six main functions. They provide structure and support, facilitate growth through mitosis, allow passive and active transport, produce energy, create metabolic reactions and aid in reproduction.

What are the characteristics of living cell?

Living organisms have the following characteristics in common: Reproduction – they can make more of the same kind of organism as themselves. Sensitivity – they can detect or sense stimuli and respond to them. Growth – they can permanently increase their size or dry mass by increasing the number or size of their cells.

What characteristics ensure that a cell is a living organism?

Properties of Life. All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

Why is the cell called the structural and functional unit of life?

Complete answer: The cell is known as the structural and functional unit of life because all living beings are formed of cells. Moreover, cells give form and structure, process nutrients and make it into usable energy. Multicellular organisms consist of specialized cells which perform specific functions.

How are structure and function related in living things?

Function and structure are related, because of a certain structure a living thing make contain makes the object function the way it does. The relationship of a structure and function is the structuring levels from molecules to organism ensure successful functioning in all living organism and living system.

Which of the following is a defining characteristic of living organism?

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

What do you think are the characteristics necessary for an organism to survive in any changes in the environment?

All organisms must be able to obtain and use resources, grow, reproduce, and maintain stable internal conditions while living in a constantly changing external environment.

Why does the cell membrane contain protein and carbohydrate?

This ensures that the nonpolar tail of saturated hydrocarbons is protected from the aqueous environment. The lipid component of the membrane mainly consists of phosphoglycerides. Later, biochemical investigation clearly revealed that the cell membranes also possess protein and carbohydrate.

What is the membrane bound space found in the cytoplasm called?

Ans: (c) The vacuole is the membrane-bound space found in the cytoplasm. The vacuole is bound by a single membrane called tonoplast. Q10. Which of the following is not true for an eukaryotic cell?

What is the lipid component of the membrane mainly composed of?

The lipid component of the membrane mainly consists of phosphoglycerides. Later, biochemical investigation clearly revealed that the cell membranes also possess protein and carbohydrate. The ratio of protein and lipid varies considerably in different cell types.

What is a common characteristic feature of plant sieve tube cells?

A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is Ans: (d) A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is absence of nucleus. Q2.