We learned several things about cells that support the view of cells as a fundamental unit of life. Which of the following is one of them? A living thing is completely made of cells, just like a brick wall is made of bricks. Cells can grow and reproduce. Cells all have a similar, simple shape. Cells have internal structures called organelles.

When you look around, you see both living and non-living things. Youmust have wondered and asked yourself – ‘what is it that makes anorganism living, or what is it that an inanimate thing does not have whicha living thing has’ ? The answer to this is the presence of the basic unit oflife – the cell in all living organisms.All organisms are composed of cells. Some are composed of a singlecell and are called unicellular organisms while others, like us, composedof many cells, are called multicellular organisms

Assertion: Organisms are made up of cells.Reason: Cells are the structural unit of living organisms. A cell keeps itschemical composition steady within its boundary

Select the correct answer.Read this summary of a scientific theory:Cells are the most basic structural and functional units of life. All living organisms are made up of one or more cells. All cells that are alive in the world today came from pre-existing cells.Which of the following would require this theory to be modified? A. Scientific observations show that microscopic organisms living in the deep ocean are not made up of cells. B. A survey finds that a majority of people believe viruses carry out the basic processes of life. C. The DNA of unicellular and multi-cellular organisms is shown to have many fundamental similarities. D. A prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets.

Which of the following is a concept of the cell theory?Group of answer choicesThe basic structure of cells varies greatly, and is determind by the function of the cell.Only higher organisms are composed of cells.Simple cells can arise spontaneously from rotting vegetation.A cell is the basic structural and functional unit of living organisms.The subcellular organelle is the basic unit of life.

Cells are the most basic building block of life, and they are living things themselves. Evaluate what this means each cell is able to do, and the implications this has for both unicellular and multicellular organisms. Remember MRS GREN in your answer.