Question

Question #c9f4c

Answer 1

There are many contributors to the cell theory

Explanation:

Anton von Leeuwenhoek (1632-1723) was a Dutch scientist whose observations through a microscope contributed greatly to the cell theory. Robert Hooke further developed the microscope and also studied plant cells. Rudolf Virchow, Theodor Schwann, and Matthias Schleiden also helped contribute.

Cells are building block(s) in all creatures- every living thing has at least one cell. The theory revolves around the fact that the cell is the basic structure.

Answer 2

In the mid 1800's, Schleiden and Schwann, along with Rudolf Virchow, formulated the three big ideas of the Cell Theory:

• `"All living things are made of cells."`
• `"The cell is the basic component of all living things."`
• `"All cells come from pre-existing cells."`

Explanation:

The Cell Theory is a central concept in Biology.

Here are its three core principles:

• `"All living things are made of cells (and the products of cells.)"`

• `"The cell is the basic structural and functional unit of all living things."`

• `"All cells come from pre-existing cells."`

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`1838`   Schleiden and Schwann formulate the Cell Theory.

The two German scientists are jointly credited with formulating the Cell Theory.
http://geography.name/matthias-schleiden-theodor-schwann-and-cell-theory/

`1855`   Rudolf Virchow adds that all cells come from pre-existing cells
https://study.com/academy/lesson/rudolf-virchow-discovery-cell-theory-contributions.html

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Here is some earlier work that led up to the Cell Theory

`1665`   Robert Hooke uses the word "cell" to describe the cell walls of cork.

Here is the famous drawing of what he saw through a microscope:

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`1674`   Antony van Leeuwenhoek becomes the first person to see living cells

Here's a drawing of what he saw in a drop of pond water by looking through a microscope.

https://www.pinterest.com/pin/191121577916897336/?lp=true

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Here's a good place to find out more about the Cell Theory
https://www.saylor.org/site/wp-content/uploads/2010/11/Wiki-Cell-Theory.pdf