Differentiate between: a.) plant cell and animal cell, b.) prokaryotic and eukaryotic cell?

Question

Differentiate between: a.) plant cell and animal cell, b.) prokaryotic and eukaryotic cell?

Answer 1

a plant cell has a cell membrane surrounded by a cell wall made of cellulose. Also a plant cell contains not centrioles.  Plants cells are stacked like bricks to give strength to the plant. Aminal cells have not cell membrane thus "oval" in shape and have move ability to move and have centrioles.

A eukaryotic cell contains organelles such as a true nucleus, endoplasmic reticulum, golgi, bodies, ribosomes, etc.  where a prokaryotic cell has no organelles, no true nucleus surrounded by a membrane, and the nucleus will usually be oval in shape and just a single strand of DNA

Answer 2

Plant cell: Has  a membrane AND a cellulose cell wall. Has chloroplasts for photosynthesis. Stores carbohydrates as starch. Has a uniform, regular shape.

Animal Cell: No cell wall, but a membrane. No chloroplasts. Stores carbohydrates as glycogen. A more fluid shape (because more flexible).

Prokaryotic cells (like bacteria) have no mitochondria, hardly any organelles, has only a loop of DNA.

Eukaryotic cells: have mitochondria, DNA and chromosomes, and many organelles like Golgi apparatus, lysosomes etc...

Answer 3

a) Plant cells contain large central vacuole, chloroplasts (if it is a photosynthetic plant cell) and a cellulose cell wall not found in animal cells.

b) Eukaryotic cells have their chromosomes (DNA) contained in a nucleus, prokaryotic cells don't.

Hope this helps!

Answer 4

A)  Plant cells have cell walls, which make them appear rectangular-shaped.  These structures are composed of cellulose, hemicellulose, and a variety of other materials.



B)  Plant cells have chlorophyll, the light-absorbing pigment required for photosynthesis.  This pigment is contained in structures called chloroplasts, which makes plants appear green.



C)  Plants cells have a large, central vacuole.  While animal cells may have one or more small vacuoles, they do not take up the volume that the central vacuole does (up to 90% of the entire cell volume!).  The vacuole stores water and ions, and may be used for storage of toxins.

`Eukaryotic cells have a true nucleus, bound by a double membrane. Prokaryotic cells have no nucleus. The purpose of the nucleus is to sequester the DNA-related functions of the big eukaryotic cell into a smaller chamber, for the purpose of increased efficiency. This function is unnecessary for the prokaryotic cell, because its much smaller size means that all materials within the cell are relatively close together. Of course, prokaryotic cells do have DNA and DNA functions. Biologists describe the central region of the cell as its "nucleoid" (-oid=similar or imitating), because it's pretty much where the DNA is located. But note that the nucleoid is essentially an imaginary "structure." There is no physical boundary enclosing the nucleoid.

Eukaryotic DNA is linear; prokaryotic DNA is circular (it has no ends).

Eukaryotic DNA is complexed with proteins called "histones," and is organized into chromosomes; prokaryotic DNA is "naked," meaning that it has no histones associated with it, and it is not formed into chromosomes. Though many are sloppy about it, the term "chromosome" does not technically apply to anything in a prokaryotic cell. A eukaryotic cell contains a number of chromosomes; a prokaryotic cell contains only one circular DNA molecule and a varied assortment of much smaller circlets of DNA called "plasmids." The smaller, simpler prokaryotic cell requires far fewer genes to operate than the eukaryotic cell.

Both cell types have many, many ribosomes, but the ribosomes of the eukaryotic cells are larger and more complex than those of the prokaryotic cell. Ribosomes are made out of a special class of RNA molecules (ribosomal RNA, or rRNA) and a specific collection of different proteins. A eukaryotic ribosome is composed of five kinds of rRNA and about eighty kinds of proteins. Prokaryotic ribosomes are composed of only three kinds of rRNA and about fifty kinds of protein.

The cytoplasm of eukaryotic cells is filled with a large, complex collection of organelles, many of them enclosed in their own membranes; the prokaryotic cell contains no membrane-bound organelles which are independent of the plasma membrane. This is a very significant difference, and the source of the vast majority of the greater complexity of the eukaryotic cell. There is much more space within a eukaryotic cell than within a prokaryotic cell, and many of these structures, like the nucleus, increase the efficiency of functions by confining them within smaller spaces within the huge cell, or with communication and movement within the cell.