Concept explainers
The cell theory states that
- all living things are composed of cells.
- cells are the smallest units of living organisms.
- new cells come from pre-existing cells by cell division.
- all of the above.
- a and b only.
Introduction:
The cells form aggregate to function as individual unit called a tissue. The tissues of different types regulating one specific function forms organs and various organs destined to control an individual system form organ system of the body.
Answer to Problem 1TY
The correct answer is option (d) all of the above.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) all of the above.The cell theory states that all living organisms are made up of cells that are the smallest and the most fundamental unit of the living organism. The cells arise from already existing cells as a result of cell division. These three postulates define cell theory. So, the correct answer is option (d).
Explanation for incorrect answer:
Option (a) all living cells are composed of cells.The cell theory states three postulates and explains that all living organisms are made up of cells, but this in only the only postulate of cell theory. So, this is an incorrect option.
Option (b) cells are the smallest units of living organisms.According to cell theory the cells are the most fundamental and smallest component of the living organisms, but this is not the only postulate of cell theory. So, this is an incorrect option.
Option (c) new cells arise from pre-existing cells by cell division.New cells arise from pre-existing cells is the postulate of cell theory given by Rudolf Virchow, but this is not the only postulate of cell theory. So, this is an incorrect answer.
Option (e) a and b only. According to cell theory the living organisms are made up of cells and the new cells come from pre-existing cells through cell division but there is also a third postulate stating that cells are the smallest unit of living organism. So, this is an incorrect answer.
The cell theory states that all living cells are made up of smallest unit called cells that arise from pre-existing cells through cell division. Hence, the correct answer is option (d) all of the above.
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Chapter 4 Solutions
Principles of Biology
- From the list below, identify the statement that is not a component of modern cell theory: Group of answer choices All living things contain one or more cells Cells arise from other cells Cells are the basic units of life - containing metabolic and hereditary processes All cells contain a cell wallarrow_forwardWhich of the following statements is not part of the cell theory? A. All cells are surrounded by a cell wall. B. All living cells come from division of preexisting cells. C. Every living organism consists of one or more cells.arrow_forwardThe cells of all organisms divide and new cells are created out of the thin air. This is the tenet of the cell theory. True or false ?arrow_forward
- Which of the following statements are true according to Cell Theory? Choose all that apply. All currently living things are generated by other living things Living things must contain more than one cell V Living things are made of cells Living things can arise from non-living matterarrow_forwardEach of the following is a main idea of the cell theory EXCEPT: O all cells are similar in structure and function. O all organisms are composed of cells. O all cells come from pre-existing cells. O the cell is the basic unit of life.arrow_forwardWhich tenet of the cell theory is supported by the concepts of mitosis and meiosis? Cells are the fundamental unit of life. All living things are made up of cells Living things are made up of at least one cell Cells come from pre-existing cells.arrow_forward
- . Which of the following is not a part of the cell theory? a Cells come from pre-existing cells. b All living organisms are composed of cells. c The basic unit of life is the cell. d Cells contain membrane-bound organelles.arrow_forwardWhich of the following is NOT part of the cell theory? All living things are composed of one or more cells Cells are the basic unit of life Cells MUST contain DNAarrow_forwardRemember that your body is made up of millions of cells! Cells work together and perform various functions depending on their cell type. It is important to understand that cells are a part of an organism's levels of organization. Fill in the following chart and draw a picture that represents each levelarrow_forward
- To determine:Whether the life of a cell ends after mitosis and cytoplasmic division.Introduction:Ever organisms present in the environment contains cell. The cell is the basic “fundamental unit” of life. Cell performs a number of important functions. These are termed as cellular activities. Reproduction is also an important cellular activity. All the new cells are formed from the old cell. The process by which a cell produces its progenies is termed as reproduction. Mitosis and cytoplasmic division are types of reproduction.arrow_forwardExplain the the following cell theory: - all living organism are composed of one or more cell - cell is the basic structural and functional unit of living organisms - all cells arise from pre-existing cellsarrow_forwardWhich of the following statements is NOT true about the cell theory? a. All cells arise spontaneously. b. All cells arise from preexisting cells. c. All living organisms are made up of cells. d. Cell is the basic unit of life.arrow_forward
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