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
19,172,228 questions answered
Popular Conversations
Simplify 5t + (t - 3) - [(7t + 5) - (8 - 3t)].
Weegy: 5t + (t - 3) - [(7t + 5) - (8 - 3t)] The simplified form is -4t User: ax + by + c, 2ax - 3by + c, and by - c ...
1/26/2015 12:15:43 PM| 4 Answers
Simplify 5(R + 2) - 6
Weegy: 5(R + 2) - 6 5R + 10 - 6 5R + 4 User: Simplify 3 - (2 - 8) Weegy: (3)/(7)-(4)/(m) = (3m/7m) - (28/7m) = (3m ...
1/26/2015 7:21:10 AM| 3 Answers
If you multiply a trinomial by a monomial, what type of polynomial ...
Weegy: If you multiply two binomials together, the product will be TRINOMIAL. User: When using FOIL to multiply the ...
1/26/2015 8:55:33 AM| 3 Answers
Simplify 3x + (-12x) - 5x. -14x -9x 10x 20x
Weegy: A)-14x. 3x + (-12x) - 5 = -14x User: Simplify 3x + 3 + 2. 3x + 5 5x + 3 8x User: Simplify -12x + ...
1/26/2015 12:27:43 PM| 3 Answers
Solve. m -5= 1/32
1/26/2015 2:19:45 PM| 3 Answers
Our esteem-based needs are met by developing self-respect and ...
Weegy: Our esteem-based needs are met by developing self-respect and achieving our personal goals. This is TRUE. ...
1/26/2015 9:09:19 PM| 3 Answers
What is the product?
1/26/2015 7:44:26 AM| 2 Answers
multiply completely, then place the answers in the proper location on ...
Weegy: x=-1 and x=-1/5 for the equation 5x^2+6x=-1 User: factor the following polynomials, then place the answers in ...
1/26/2015 7:49:09 AM| 2 Answers
Is the given point interior, exterior, or on the circle (x + 2)2 + (y ...
Weegy: (x^4 + 81) (x - 3) = x^5 - 3x^4 + 81x - 243 User: Is the given point interior, exterior, or on the circle ...
1/26/2015 8:07:10 AM| 2 Answers
Weegy Stuff
S
L
Points 1775 [Total 1796]| Ratings 0| Comments 1775| Invitations 0|Offline
S
L
P
L
P
Points 1347 [Total 6624]| Ratings 0| Comments 1347| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
P
Points 600 [Total 15611]| Ratings 0| Comments 600| Invitations 0|Offline
S
L
Points 438 [Total 1119]| Ratings 2| Comments 418| Invitations 0|Offline
S
1
L
L
Points 223 [Total 6923]| Ratings 0| Comments 223| Invitations 0|Online
S
P
C
L
P
L
1
Points 90 [Total 6678]| Ratings 1| Comments 80| Invitations 0|Offline
S
Points 87 [Total 102]| Ratings 0| Comments 87| Invitations 0|Offline
S
L
Points 77 [Total 1638]| Ratings 0| Comments 77| Invitations 0|Offline
S
Points 63 [Total 445]| Ratings 0| Comments 63| Invitations 0|Offline
S
Points 50 [Total 52]| Ratings 0| Comments 0| Invitations 5|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.