Why Are All Cells Not The Same

By MathHelloKitty

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Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages. That’s because all cells are surrounded by a structure called the cell membrane — which much like the walls of a house serves as a clear boundary between the cell’s internal and external environments.

What characteristics are common to all cells?

All cells share four common components: 1) a plasma membrane an outer covering that separates the cell’s interior from its surrounding environment 2) cytoplasm consisting of a jelly-like region within the cell in which other cellular components are found 3) DNA the genetic material of the cell and 4) ribosomes …

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What are the limitations of the cell theory?

The shortcomings or drawbacks of cell theory are: Viruses are considered as acellular entities or organismsthat do not have cell machinery yet they are taken into account as organisms in this cell theory. Matthias Schleiden and Theodor Schwann did not know the mechanism of the cel.

Why don t all plant cells look the same?

Explanation: As our body is divided into different tissues eg – our muscular cells differ from our skin cells (epithelium) they are not similar in structure. … That is why plant cells differ in the structure according to their location and function.

Do all cells of our body look alike in terms of shape size and structure what similarities do they have class 9?

Answer : Cells don’t look alike because different shapes and structures are needed for different tasks. For example a neuron is a long “string” shape in order to stretch to connect to other neurons.

Do you know about any different types of cells or about the organizational structure of cell?

Based on the organization of their cellular structures all living cells can be divided into two groups: prokaryotic and eukaryotic (also spelled procaryotic and eucaryotic). Animals plants fungi protozoans and algae all possess eukaryotic cell types. Only bacteria have prokaryotic cell types.

Do all cells look alike in terms of shape size and structure in the temporary mount of onion peel?

The cells of the onion peel will all look the same regardless of the size of the onion they came from. These small structures that we see are the basic building units of the onion bulb. These structures are called cells.

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Do all cells have the same DNA?

Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA) but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Are all cells the same in the human body?

The cells inside our bodies are “specialized.” This means that each type of cell performs a unique and special function. For this reason each of the 200 different types of cells in the body has a different structure size shape and function and contains different organelles.

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Are all cells microscopic?

Cells are microscopic meaning they can’t be seen with the naked eye. The reason cells can grow only to a certain size has to do with their surface area to volume ratio. … Here surface area is the area of the outside of the cell called the plasma membrane.

Why do you think plants and animals have many different types of cells as opposed to having only one cell type?

Both plant and animal cells have a cell membrane but only the former has a cell wall. The absence of a wall makes it possible for animals to develop different types of cells and tissues. Plant cells also have a chloroplast.

Why all living organisms are composed of one or more cells?

The unified cell theory states that: all living things are composed of one or more cells the cell is the basic unit of life and new cells arise from existing cells. … All organisms are made up of one or more cells. Cells arise from other cells through cellular division.

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How a cell can make a difference?

Different cells have different jobs to do. Each cell has a size and shape that is suited to its job. Cells that do the same job combine together to form body tissue such as muscle skin or bone tissue. Groups of different types of cells make up the organs in your body such as your heart liver or lungs.

Are atoms and cells the same thing?

Atoms belong to chemistry and cells belong to biology. Atoms are smaller than cells and in a way even cell is made by atoms. Cells are composed of molecules and molecules are made by atoms. Matters or things with physical entities can not exist without atoms and we living beings can not function without cells.

Which other part of a cell has the same chemical composition as the cell membrane?

The part of a cell which has the same chemical composition as the cell membrane is the plasma membrane. Plasma membrane is also called as the cell membrane as it divides the interior portion of the cell from the outside environment.

In what way are cells similar to atoms?

In what way are cells similar to atoms? Cells are similar to atoms because they are building blocks of all living life.

What characters are not present in all cells?

All have cell membranes (sometimes called plasma membranes) but not all eukaryotic cells have cell walls:

  • Plant cell walls consist mainly of cellulose.
  • Fungal cell walls are made of chitin.
  • Animal cells do not have cell walls.

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Which structure is not a component of all cells?

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