Question and answer
Why is it important to differentiate between eukaryotic and prokaryotic cells? What do you think is the biggest difference between the two?
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
Ask a question
Not a good answer? Get an answer now. (FREE)
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
explain how atoms make up organic compounds, which make up all living organisms, addressing all three domains
Weegy: The earliest forms of life evolved a set of mechanisms for extracting energy from the chemicals around them and from sunlight by transferring electrons from one element or molecule to another. [ All life on Earth continues to rely on this ability to move electrons, and the electron transfer reactions, invented by the earliest bacteria and passed on to all other living organisms, form a nested set of biologically catalyzed elemental ... (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 4/18/2012 2:54:13 PM
0 Answers/Comments
use nephromegaly in a sentence
Weegy: She was diagnosed of urinary tract infection secondary to nephromegaly. (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 4/19/2012 11:07:27 AM
0 Answers/Comments
Are there abbreviations in healthcare that are safe to use and some that are not?
Weegy: Frank Federico, RPh, is concerned about abbreviations and acronyms from a patient safety point of view. Federico is content director for the Institute for Healthcare Improvement in Cambridge, Massachusetts. [ One area that particularly concerns him is the use of abbreviations for medications. Federico says one of the more serious safety concerns is the fact that the meaning of an abbreviation may differ from one hospital to another. For ... (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 4/20/2012 12:15:49 PM
0 Answers/Comments
why is it important for an HCA to have the five skills of medical communication?
Weegy: It i necessary in order to come up with new and flexible ways to work smarter. User: The five skills are: - reading - listening - thinking, analyzing and understanding - writing or (typing) and spelling - speaking and pronouncing (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 4/21/2012 9:52:23 PM
0 Answers/Comments
Think about what you would do with a facility supporting healthcare if the people that worked there did not speak medical language or understand what the clients needs were be and how to meet those needs. Would you come back?
Weegy: No. I would not come back to the facility. Why would I look for advice from doctors who don't understand my concerns? I want a doctor/ health person whom I can not only trust but rely on to get the job done correctly. User: one is Joint Commission, another is QSEN, and one more is IOM (Institute of Medicine)- take a look at these sites- are any concerned with safety of patients and health professionals? (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 4/21/2012 10:00:57 PM
0 Answers/Comments
Home | Contact | Terms | Privacy | Social | ©2013 Purple Inc.
Ad
Popular Conversations
Solve the inequality 5x
Weegy: 5x User: Solve the inequality 5x Weegy: 5x User: Solve the inequality 12x Weegy: It will be c.x User: Solve the ...
4/23/2014 4:34:04 PM| 7 Answers
Solve for x. x - 8 = -20 -28 -12 12 28
Weegy: 6(x - 2) = 4, 6x - 12 = 4, 6x = 4 + 12, 6x = 16, x = 16/6, or 8/3 in simplest form. User: The sum of ...
4/23/2014 1:27:55 PM| 3 Answers
5x + 4y + 15 + 2x - 8y - 5=
Weegy: The answer for 5x - 4y = 12 is y = 1/4 (5 x-12). User: 8(5a - b) - 6(4b-4a)= Weegy: a^2 - 5a - 6 = (a + ...
4/23/2014 8:09:04 PM| 3 Answers
Which country is not a permanent member of the U.N. Security ...
Weegy: the country which is not a permanent member of the UN council is (c) China. User: Who holds veto power in the ...
4/23/2014 10:11:57 AM| 2 Answers
Zeller, Inc., has 50,000 shares of stock outstanding. Zeller declares ...
Weegy: Zeller, Inc., has 60,000 shares of stock outstanding. Zeller declares a dividend of $580,000. ...
4/23/2014 10:05:10 AM| 2 Answers
What is the European Union?
4/23/2014 11:36:33 AM| 2 Answers
The United States and its allies launched operation “Desert Storm” in ...
Weegy: The United States and its allies launched operation “Desert Storm” in response to Iraq’s invasion of KUWAIT in ...
4/23/2014 11:50:36 AM| 2 Answers
troupe
Weegy: Chorus can be defined as a group of persons who speak or sing in a given part or composition in drama or ...
4/23/2014 11:53:48 AM| 2 Answers
Weegy Stuff
S
L
P
C
L
P
C
Points 1846 [Total 7233]| Ratings 0| Comments 1846| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
Points 1817 [Total 9698]| Ratings 0| Comments 1817| Invitations 0|Online
S
1
L
C
L
Points 914 [Total 5717]| Ratings 4| Comments 874| Invitations 0|Offline
S
1
L
1
L
P
Points 582 [Total 7259]| Ratings 2| Comments 562| Invitations 0|Offline
S
L
Points 480 [Total 2927]| Ratings 2| Comments 450| Invitations 1|Offline
S
L
1
1
1
Points 316 [Total 3582]| Ratings 7| Comments 246| Invitations 0|Offline
S
R
Points 267 [Total 379]| Ratings 6| Comments 187| Invitations 2|Offline
S
Points 217 [Total 217]| Ratings 6| Comments 137| Invitations 2|Offline
S
Points 170 [Total 586]| Ratings 0| Comments 170| Invitations 0|Offline
S
1
Points 165 [Total 495]| Ratings 4| Comments 125| Invitations 0|Offline