There are invaginations of the plasma membrane inside the bacterium. Would photosynthesis be possible with such an arrangement, and what would you expect to find in the invaginated membrane if these bacteria were photosynthetic?
2006-12-19 08:21:34 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Well, I'm not so sure about this invagination thing, I'd imagine there would be a lot of inpenisations that would like to get in them. Stupid jokes aside, It is not the chloroplasts that make photosyntheis possible, but the chemical chlorophyll inside them that do the trick.
There are a few types of photosynthetic organisms that do not have chloroplasts. An algae called Spyrogyro (Sp?) has a spiral shaped stationary organelle attached to it's cell wall, which makes it capable of photosynthesis. maybe these are the invaginations you are talking about.
A number of other cells have no organelles, and photosynthesize thanks to the chlorophyll that floats freely inside the cytoplasm.
2006-12-19 08:36:02 · answer #1 · answered by ye_river_xiv 6 · 0⤊ 0⤋
Cyanobacteria.
> Would photosynthesis be possible with such an arrangement
Yes.
> what would you expect to find in the invaginated membrane if these bacteria were photosynthetic?
A form of chlorophyll, and an equivalent of the cytochromes. Generally, a way of getting energy from light, and transferring it to high energy electrons to make ATP or similar short-term energy storage.
2006-12-19 10:43:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Free-living green photosynthetic bacteria (closely related to chloroplasts).
No invaginations, but a complex internal system -- thylakoids.
Free-living purple photosynthetic bacteria (closely related to mitochondria)
Invaginations.
2006-12-19 08:46:47 · answer #3 · answered by novangelis 7 · 0⤊ 0⤋
all bacteria that are photosynthetic do not have chloroplats, there are cyanobacteria, purple-sulfur bacteria, etc, thwy have invaginations in their membranes that contain cholorphyll, bacteriochorophylls, and pigments such as phycobilins, and carotinoids
REMEMBER: definition of prokaryotes(bacteria and archaea) is the absence of membrane bound organelles, so NO bacteria have what we know as chloroplasts, bacteria have membrane bound reaction centers and pigments though
2006-12-19 09:27:15 · answer #4 · answered by jennypjd 3 · 0⤊ 0⤋
No Chloroplasts, no Photosynthesis
2006-12-19 08:30:28 · answer #5 · answered by Anonymous · 0⤊ 0⤋