Question

2.1 structure and function of cells
cells
cells are the basic units of
and
in living things. cells form the parts of every organism and carry out all of its
. a single cell has the same needs as an entire
. those functions can include obtaining
, bringing in nutrients and
, and getting rid of
. most organisms have bodies with many different cells that work together to help the organism to stay alive,
, and
.
cell theory
the invention of the
made the discovery of cells possible. robert
made drawings of what he saw when he looked at the bark of
oak trees. hooke thought that the empty spaces he observed looked like tiny rooms, so he named them the \ \. anton van leeuwenhoek was the first person to see
cells. matthias
noticed that all
were made of cells. theodor
came to the conclusion that
are made of animal
. the
theory is a widely - accepted explanation of the relationship between cells and
things. the cell theory states the following:
● all
things are made of

● cell are the basic unit of
and
in living things
● all
cells are produced from existing

microscopes
the cell theory could not have been developed without
. light microscopes focus light through
to produce a magnified image.
microscopes use beams of
that can scan the surface of the specimen. both types of microscopes do the same job in different ways, and both rely on two important properties—
(the condition when objects appear larger than they are) and
.
a microscope image is useful when it helps you to see the
of an object clearly. the higher the
of an image, the better you can distinguish two separate structures that are close together. in general, for
microscopes, resolution improves as magnification
. electron microscopes provide images with great
and high magnification.

Explanation:

Cells are the basic units of structure and function in living things. The cell theory was developed through the work of several scientists using microscopes. Microscopes use magnification and resolution to help view cells. Light microscopes use light, while electron microscopes use electron beams.

Answer:

Cells are the basic units of structure and function in living things. Cells form the parts of every organism and carry out all of its life - functions. A single cell has the same needs as an entire organism. Those functions can include obtaining nutrients, bringing in nutrients and oxygen, and getting rid of wastes. Most organisms have bodies with many different cells that work together to help the organism to stay alive, grow, and reproduce.
The invention of the microscope made the discovery of cells possible. Robert Hooke made drawings of what he saw when he looked at the bark of cork oak trees. Hooke thought that the empty spaces he observed looked like tiny rooms, so he named them the "cells." Anton van Leeuwenhoek was the first person to see living cells. Matthias Schleiden noticed that all plants were made of cells. Theodor Schwann came to the conclusion that animals are made of animal cells. The cell theory is a widely - accepted explanation of the relationship between cells and living things. The cell theory states the following:

• All living things are made of cells
• Cells are the basic unit of structure and function in living things
• All new cells are produced from existing cells

The cell theory could not have been developed without microscopes. Light microscopes focus light through specimens to produce a magnified image. Electron microscopes use beams of electrons that can scan the surface of the specimen. Both types of microscopes do the same job in different ways, and both rely on two important properties—magnification (the condition when objects appear larger than they are) and resolution.
A microscope image is useful when it helps you to see the details of an object clearly. The higher the resolution of an image, the better you can distinguish two separate structures that are close together. In general, for electron microscopes, resolution improves as magnification increases. Electron microscopes provide images with great detail and high magnification.