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PolarNik [594]
3 years ago
11

Some photosynthetic bacteria contain the protein bacteriorhodopsin, which absorbs light and pumps protons out of the cell direct

ly. Briefly describe how such a cell could use bacteriorhodopsin and an H+ATPase to make ATP using light.
Biology
1 answer:
Yanka [14]3 years ago
6 0

Answer:

Explanation:

Bacteriorhodopsin is one of the simplest protein from a family of a protein called opsin which is present in photosynthetic bacteria, algae and few fungi.

The bacterio-rhodopsin acts as an active light-gated proton pump which can pump the protons against their concentration gradient and then establishes concentration gradient across the membrane.

When the photosynthetic bacteria gets exposed to the light, bacteriorhodopsin pumps the proton from the cytosolic side to outside. This establishes electric motive force across the membrane which causes disequilibrium of protons.

The protons move back from the outside of the membrane to inside through H+ATPase which help allow the generation of ATP in the cell.

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goldfiish [28.3K]

Answer:

The surface area of a cube = 6a2 where a is the length of the side of each edge of the cube. Put another way, since all sides of a cube are equal, a is just the length of one side of a cube. We have 96 = 6a2 → a2 = 16, so that's the area of one face of the cube.

Explanation:

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4 0
3 years ago
Short note sentence describe the terms pure culture and mixed culture​
yaroslaw [1]

Answer:

A pure culture consists of only one type of microbe while a  mixed culture has two or more than two microbes.

Explanation:

A pure culture consists of only one type of microbe.

While a mixed culture consists of more than one type of microbes. such cultures may comprise of different species of bacteria or a group of bacteria, viruses and other pathogens.

In mixed culture the microbe species living together may harm each other existence.

4 0
3 years ago
Lack of ______ has been linked to increased risk for autoimmune diseases. zinc iron vitamin C vitamin D
Eva8 [605]
Lack of vitamin D has been linked to increased risk for autoimmune diseases.
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5 0
3 years ago
Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?
aalyn [17]

Answer:

Mitochondria and the chloroplast

Explanation:

Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.  

In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.

Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.

In both mitochondria and chloroplast,have these mechanisms for the production of ATP .

7 0
3 years ago
A food preservation method in which microorganisms metabolize components of a food is called
Firdavs [7]
<span>A food preservation method in which microorganisms metabolize components of a food is called </span>fermentation.
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8 0
3 years ago
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