You have new items in your feed. Click to view.
Question and answer
Question 17 . Plasma membranes are selectively permeable. This means that anything can pass into or out of a cell. the plasma membrane regulates the passage of material into and out of the
cell. glucose cannot enter the cell. plasma membranes must be very thick.
Please clarify your question.
Expert answered|cerise|Points 30|
Question
Asked 9/2/2011 10:24:34 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.
Questions asked by the same visitor
how can the avian orgin spread to humans?
Weegy: Transmission through human is rare. migratory birds are among the carriers of the H5N1 virus it may spread to all parts of the world (More)
Question
Expert Answered
Asked 9/2/2011 6:44:57 PM
0 Answers/Comments
Nearly all fatal conditions, whether intrinsic or extrinsic, are influenced by a complex interaction of biological, psychological, and environmental (social) factors. True False .
Weegy: Intrinsic motivation comes from inner psychological factors whereas extrinsic motivation comes from outside factors, such as a boss, a teacher, the law, and so on. (More)
Question
Expert Answered
Asked 9/2/2011 8:08:04 PM
0 Answers/Comments
what is the mitochondrial theory of aging ?
Weegy: The mitochondrial theory of aging is often considered as an extension and refinement of the free radical theory (Harman 1972; Miquel et al 1980). [ Mitochondrial DNA mutations accumulate progressively during life and are directly responsible for a measurable deficiency in cellular oxydative phosphorylation activity, leading to an enhanced reactive oxygen species production. This latter results in an increased rate of mitochondrial DNA damage and mutagenesis, triggering the onset of a “vicious cycle” of exponentially increasing oxidative damage and dysfunction, which ultimately culminates in death. Supporting the primary importance of mitochondria in the aging process and in determining longevity, it has been documented that several mutagenic chemicals and lipophilic carcinogens (eg, polycyclic aromatic hydrocarbons) tend to preferentially damage mitochondrial DNA (Wunderlich et al 1970; Allen and Coombs 1980; Niranjan et al 1982; Rossi et al 1988). It can then be hypothesized that a life-long exposure to these environmental toxins may lead to a preferential accumulation of mitochondrial DNA damage and accelerate aging. ] (More)
Question
Expert Answered
Asked 9/2/2011 8:31:10 PM
0 Answers/Comments
In 1997, Ischemic heart disease was the leading cause of death in the U.S. A. True B. False .
Weegy: A. True (More)
Question
Expert Answered
Asked 9/2/2011 8:42:24 PM
0 Answers/Comments
26,579,839 questions answered
Popular Conversations
What does the term "suffrage" mean? A. great suffering B. the ...
Weegy: The right of people to gather for whatever nonthreatening purpose they desire is: peaceful assembly. User: ...
12/6/2016 6:37:32 AM| 2 Answers
20 for $1.56
Weegy: 20+56= 76 User: $3.78 for 6
12/6/2016 7:28:29 AM| 2 Answers
What is believed to be one of the main reasons Secretary of State ...
Weegy: D. encourage foreigners to immigrate to the United States. User: For most of the 19th century, which nation ...
12/6/2016 9:45:21 AM| 2 Answers
The Presidential campaign for Calvin Coolidge was led by ___.
Weegy: The Presidential campaign for Calvin Coolidge was led by Charles Dawes. User: The philosophy that Western ...
12/6/2016 9:48:48 AM| 2 Answers
Weegy Stuff
S
P
Points 178 [Total 450] Ratings 1 Comments 168 Invitations 0 Offline
S
Points 59 [Total 59] Ratings 0 Comments 59 Invitations 0 Online
S
P
Points 50 [Total 482] Ratings 0 Comments 50 Invitations 0 Offline
S
P
P
Points 44 [Total 723] Ratings 0 Comments 44 Invitations 0 Offline
S
Points 21 [Total 43] Ratings 0 Comments 11 Invitations 1 Offline
S
Points 16 [Total 292] Ratings 0 Comments 16 Invitations 0 Offline
S
Points 15 [Total 15] Ratings 0 Comments 15 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Online
S
Points 8 [Total 8] Ratings 0 Comments 8 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Online
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.