Can you see organelles such as ribosomes without an electron submicroscope?

Biologically, the microstructure is generally based on cells, while the submicrostructure is based on organelles.

The submicroscopic structure can only be seen by electron microscopy.

Ultrastructure.

Also known as ultrastructure. It refers to the observation of various microstructures in cells that cannot be clearly distinguished under an ordinary light microscope. The resolution limit of ordinary light microscope is about microns, the thickness of cell membrane, endoplasmic reticulum membrane and nuclear membrane, the diameter of ribosomes, microsomes, microtubules and microfilaments are all smaller than microns, so these cell structures cannot be observed with ordinary light microscopes, and various submicroscopic structures in cells must be observed with electron microscopes with higher resolution.

Microstructure Cellular structures that can be observed in a normal light microscope. There are a wide variety of research methods in cell biology. Observation and analysis are the basic methods of cell research.

Microscopes are the main tools used for cell observation, and the microscopes currently used include ordinary light microscopes, dark-field microscopes, phase contrast microscopes, fluorescence microscopes, and electron microscopes. The ability of various microscopes to recognize microscopic objects is called resolution. The maximum magnification of an ordinary optical microscope is 1000 to 1500 times, and the minimum distance between two points can be resolved is microns, and it cannot be resolved if it is less than this distance.

Therefore, it is generally accepted that the resolution limit of ordinary optical microscopes is about microns. The structures in the cell, such as chromosomes, chloroplasts, mitochondria, centrosomes, nucleolus, etc., are more than microns in size and can be seen with ordinary light microscopes, so these structures belong to the microstructure of the cell.

Organelles such as ribosomes cannot be seen under the light microscope, only cell structures such as cell membranes, cytoplasm, and nucleus can be seen.

Why are ribosomes invisible with a light microscope? - The object to be observed is too small, and the resolution of the optical microscope is not enough!

Because: the resolution limit of ordinary light microscope is about microns, the thickness of cell membrane, endoplasmic reticulum membrane and nuclear membrane, the diameter of ribosomes, microsomes, microtubules and microfilaments are all less than microns, so these cell structures cannot be observed with ordinary light microscopes!

The structure observed by electron microscopy is called a submicroscopic structure.

The organelles that can be observed are: endoplasmic reticulum, ribosomes, high-by-rothalgi apparatus, lysosomes, mitochondrial motifs, chloroplasts, microbodies, vacuoles, cell cover, galloping skeleton, flagella, and cytosol.

Organelles are submicroscopic structures in which ribosomes are attached to the endoplasmic reticulum or dispersed in the cytoplasm and are therefore not visible under a light microscope.

Under the light microscope, only vacuoles, chloroplasts, and sometimes mitochondria can be observed.

Ultrastructure, also known as submicrostructure. It refers to various microstructures in cells that cannot be clearly distinguished by observation under ordinary light microscopes, but can be observed under electron microscopes (the resolution limit of ordinary light microscopes is about microns, the thickness of cell membranes, endoplasmic reticulum membranes and nuclear membranes, and the diameters of ribosomes, microbodies, microtubules and microfilaments are all smaller than microns), such as various organelles.

The resolution limit of ordinary light microscope is about microns, the thickness of cell membrane, endoplasmic reticulum membrane and nuclear membrane, the diameter of ribosomes, microsomes, microtubules and microfilaments are all smaller than microns, so these cell structures cannot be observed with ordinary light microscopes, and various submicroscopic structures in cells must be observed with electron microscopes with higher resolution. )

The organelles that can be seen under the light microscope are: chloroplasts, vacuoles, and stained mitochondria.

Microstructures with diameters smaller than microns are seen under the electron microscope, and microstructures are seen under the optical microscope.

Submicrostructure, also known as ultrastructure, refers to various microstructures in cells that cannot be clearly resolved under ordinary light microscopes.

a. Observation of ribosomes requires the use of an electron microscope to imitate caution, a correct;

b. Ribosomes are the only organelles shared by prokaryotic cells and eukaryotic cells, b correct;

c. Antibodies belong to secreted proteins, which are synthesized on ribosomes attached to the endoplasmic reticulum, and c is wrong;

D. Ribosome is the place where protein is synthesized, that is, it is the place where amino acids are combined into polypeptide chains according to mRNA information

Therefore, c

Why do you use a light microscope to see the ribosomes in the beam rolling holes? ——The observation object is too small, and the optical microscope is not enough to distinguish the reputation!

Because the resolution limit of an ordinary light microscope is about microns, the thickness of the cell membrane, endoplasmic reticulum membrane and nuclear membrane, and the diameter of ribosomes, microsomes, microtubules and microfilaments are all less than microns, so these cell structures cannot be observed with an ordinary light microscope!