Question and answer
Which of the following is NOT a part of an ATP molecule? A. adenine B. ribose C. chlorophyll D. phosphate
Chlorophyll B is, chemically, very similar to hemoglobin (the stuff that carries oxygen in your bloodstream and gives it that lovely red color). [ [ However, hemoglobin is an iron porphyrin (Fe surrounded by four pyrroles, which are organic ring molecules with nitrogen atoms surrounding the Fe), whereas chlorophyll (A&B) is a magnesium porphyrin. Chlorophyll is an effective photoreceptor
(capture light energy efficiently) because they have alternating single and double bonds. Because of a slight difference in their structures, A and B tend to absorb light over different ranges of wavelengths, and therefore the two complement each other in biological systems (i.e. in plants). However, it is not enough to just absorb the light energy; there must also be efficient means of transferring that energy to chemical potential (i.e. to transform it into a form that it can be used to do some work). In biological systems, a complex sequence of reactions within a cellular structure, called a chloroplast, uses the light energy to make chemical energy by reducing CO2. In other words, your "bio-solar cell" would have to somehow either (1) mimic this process, which sounds pretty tough, or (2) somehow transfer energy directly into the motion of electrons (which could cause a current, etc.). Then, you would have to figure out a way to make a cell which would prevent the chlorophyll from degrading. Anyway, what I wanted to say was, it is tough to make a solar cell that is more efficient than a chloroplast; it absorbs photons with near-unit efficiency (almost every photon that hits a chlorophyll molecule gets absorbed) and transforms light energy to chemical energy very efficiently as well. But a plant can always make more of it when it starts to degrade, and a solar cell made by man cannot repair itself. I hope these meandering observations helped! Robert Topper ] ]
Expert answered|rutie|Points 35|
Question|Rated good
Asked 12/15/2010 9:12:57 AM
0 Answers/Comments
Get an answer
Ask Weegy or search for 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
Plaintiffs in tort suits are seeking a(n) A. waiver. B. tort. C. remedy. D. immunity.
Weegy: B. tort User: Jorie slipped and spilled his hot coffee on Tim. Tim retaliated by throwing his lemonade on Jorie. Jorie committed A. no tort. B. assault. C. battery. D. inflection of emotional distress. Weegy: A. no tort. User: Copyrights protect A. any expression that is registered with the copyrights office. B. any ... (More)
Question
Expert Answered
Asked 12/14/2010 8:04:23 AM
0 Answers/Comments
Going to court instead of using mediation or negotiation can sometimes make this type of case worse. A. murder B. divorce C. shoplifting D. robbery
Weegy: B. divorce User: Which position requires advocacy? A. judge B. jury C. defense attorney D. arbitrator (More)
Question
Expert Answered
Asked 12/14/2010 11:08:26 AM
0 Answers/Comments
16,974,218 questions answered
Popular Conversations
3x + 2x = -35
Weegy: 1/4 (2x ? 12) = 2/3 (3x + 9); 1/2x - 3 = 2x + 6; 1/2x - 2x = 6 + 3; -3/2x = 9; x = 9 ? (-3/2); x = 9 * ...
7/30/2014 12:20:31 PM| 2 Answers
7+8+8=? User: 7+9
Weegy: 8/7/9=(8/7)/9= 1.143/9=0.127;
7/30/2014 3:17:02 PM| 2 Answers
Determine whether the verb tense shift in the sentence below is ...
Weegy: The moderator asked for questions as soon as the speaker has finished. The verb tense shift is INAPPROPRIATE. ...
7/30/2014 4:08:17 PM| 2 Answers
4 5/6 + x = 8
Weegy: The answer for : (x^8+x^4)/x is (x^4+x^8)/x = sum_(n=-infinity)^infinity (piecewise | 1 | n = 7 2 | n = 0 7 | n ...
7/30/2014 4:17:44 PM| 2 Answers
The moderator asked for questions as soon as the speaker has ...
Weegy: a. appropriate :) User: By the time negotiations began, many pessimists have expressed doubt about ...
7/30/2014 4:30:09 PM| 2 Answers
Consider the poem, “The Soul Selects her own Society.” Select an ...
Weegy: A. Unnatural selection would be a title that reflects the main idea of the poem. User: In “The Soul Selects ...
7/30/2014 4:43:37 PM| 2 Answers
What year did the United States enter World War I? A. 1917 ...
Weegy: The United States enter World War I in: 1917. User: The first oil well was drilled in what geographical ...
7/31/2014 6:18:32 AM| 2 Answers
18-7x=-20.5 what is the value of x
7/31/2014 8:22:22 AM| 2 Answers
That man is a famous hockey player. a. Action verb b. Linking verb
Weegy: A linking verb is a verb that connects the subject of a sentence to the complement. User: The winter air ...
7/31/2014 8:47:58 AM| 2 Answers
The harvesting of wheat in British Columbia is an example of ...
Weegy: The harvesting of wheat in British Columbia is an example of A. ecological imperialism. User: Which of the ...
7/31/2014 10:34:41 AM| 2 Answers
Weegy Stuff
S
R
L
1
1
P
C
1
P
1
1
L
P
C
P
C
1
P
C
L
P
C
1
P
C
Points 2600 [Total 21600]| Ratings 1| Comments 2590| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
Points 2469 [Total 15022]| Ratings 1| Comments 2459| Invitations 0|Online
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
Points 2432 [Total 17561]| Ratings 0| Comments 2432| Invitations 0|Offline
S
L
1
Points 1793 [Total 3976]| Ratings 2| Comments 1773| Invitations 0|Offline
S
L
1
1
1
1
L
1
Points 1530 [Total 7707]| Ratings 2| Comments 1510| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 1053 [Total 10661]| Ratings 0| Comments 1053| Invitations 0|Offline
S
1
L
Points 888 [Total 4563]| Ratings 2| Comments 868| Invitations 0|Online
S
P
C
L
P
L
1
Points 828 [Total 5882]| Ratings 4| Comments 788| Invitations 0|Online
S
Points 195 [Total 199]| Ratings 0| Comments 185| Invitations 1|Offline
S
R
R
Points 160 [Total 348]| Ratings 1| Comments 140| Invitations 1|Offline
Home | Contact | Archive | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.