You have new items in your feed. Click to view.
Question and answer
Q: Why is it important to differentiate between eukaryotic and prokaryotic cells? What do you think is the biggest difference between the two?
A: Answer: Improve 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. ]
Expert answered|scijoe21|Points 775|
Question
Asked 4/24/2012 7:04:12 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
0 questions answered
Popular Conversations
Calculate the product 1/3 and 1/5
Weegy: The product of 1/3 and 1/4 is 1/12. Solution: 1/3 * 1/4 = 1/12
5/23/2017 9:39:31 PM| 1 Answers
Giving human characteristics to objects or ideas is
Weegy: Giving human characteristics to objects or ideas is PERSONIFICATION.
5/19/2017 10:58:38 PM| 0 Answers
Motivation refers to forces that
Weegy: Motivation refers to forces that: energize, direct, and sustain a person's efforts.
5/19/2017 10:41:24 PM| 0 Answers
Which branch of government makes the law
Weegy: The legislative branch of government makes the law.
5/24/2017 6:13:01 PM| 0 Answers
A tapeworm lives off the nutrients in an animal s digestive tract. ...
Weegy: A tapeworm lives off the nutrients in an animal's digestive tract. Therefore, a tapeworm is a PARASITE.
5/24/2017 10:19:19 AM| 0 Answers
Giving human characteristics to objects or ideas is
Weegy: Giving human characteristics to objects or ideas is PERSONIFICATION.
5/24/2017 10:17:32 AM| 0 Answers
Stage 1 of delivery averages about 8 hours but may be longer for ...
Weegy: Stage 1 of delivery averages about 8 hours but may be longer for first-time mothers. TRUE.
5/24/2017 10:12:05 AM| 0 Answers
The position from which you write about your subject is called your ...
Weegy: The position from which you write about your subject is called your POINT OF VIEW.
5/24/2017 10:03:54 AM| 0 Answers
Which type of tax is applied only to particular goods? A. excise ...
Weegy: Excise tax is applied only to particular goods.
5/23/2017 7:13:31 PM| 0 Answers
In “A Few Don’ts,” Pound encourages the use of __________instead of ...
Weegy: In A Few Don'ts, Pound encourages the use of The Concrete instead of the vagueness of abstractions. User: ...
5/22/2017 11:51:10 AM| 0 Answers
Weegy Stuff
S
Points 26 [Total 26] Ratings 0 Comments 26 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 366] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
P
P
L
P
P
P
Points 7 [Total 1730] Ratings 0 Comments 7 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 467] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.