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3 years ago

Explain the “Chemiosmotic Model of ATP Production”.

Biology

1 answer:

aev [14]3 years ago

8 0

Answer:

The electron transport chain (ETC) is located in the mitochodrial cristae. As electrons move from one protein complex to the other via redox reaction, energy is used to pump hydrogen ions (H+) from the matrix to the intermembrane space of the mitochondria. As hydrogen ions flow down the concentration gradient from the intermembrane space to the mitochodrial matrix, ATP is synthesized by the enzyme ATP synthase.

The ATP synthase complex can be compared to the gates of a dam. when the gates of a hydroelectric dam are opened, water rushes through, and electricity (energy) is produced. Similarly, when H+ ions flow down a gradient from intermembrane space into the matrix, the enzyme ATP synthase synthesizes ATP from ADP and inorganic phosphate or Pi. This process is called chemiosmosis because ATP production is linked with the establishment of a proton (H+) gradient across the membranes.

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Cystitis is most often caused by Group of answer choices Escherichia coli. Leptospira interrogans. Candida albicans. Neisseria g

djyliett [7]

Answer:

Cystitis is most often caused by Escherichia coli. It is a urinary tract infection and can occur due to sexual intercourse too. Women suffers with cystitis more than men as women have shorted urethra and bacteria reaches the bladder faster.

Explanation:

Cystitis is caused by bacteria Escherichia coli and lead to swelling of the bladder. It can also lead to irritation and damage to the bladder. The infected person has the urge to urinate more frequently and has the burning sensation. Cystitis can lead to complications such as blood in the urine and kidney infection. The other types of cystits are drug-induced, intestinal, radiation, and chemical cystitis. It can also develop as a result of diabetes, and kidney stone.

Learn more about the treatment of cystitis here:

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3 0

2 years ago

When plants are stressed by dry conditions, they secrete the hormone abscisic acid (ABA) and in response the stomata close, even

dimaraw [331]

Answer:

C. K+ ions flow out the the guard cells and water flows out the cells.

Explanation:

The turgidity of the guard cells allows the opening and closing of the stomata. This is especially necessary when it comes to water conservation in plants. In order for the cells to become turgid or flaccid, there must be the influx and out ward movement of water via osmosis.

In order for this the occur the osmotic pressure of the cellular environment must change and this is done by changing the solute concentration.

The pumping in of K+ ions out the cell allows the solute concentration to decrease and this in turn encourages the movement of water across a concentration gradient through a semi-permiable membrane.

The water leaves the guard cells and they become flaccid. This causes the stomata to be covered.

4 0

3 years ago

Read 2 more answers

A living thing is surrounded by its

natima [27]

It is surrounded by it's environment.

7 0

3 years ago

A bacterial cell that contains an outer membrane and periplasmic space stains pink to red on Gram stain. Which one of the follow

anastassius [24]

Answer:

a. No discrepancy is present; organisms that contain an outer membrane and periplasmic space should stain pink because of their cell wall composition.

Explanation:

Gram stain is the staining method used to differentiate bacterial species into two groups, gram-positive and gram-negative bacteria. Factors that will differentiate gram-positive from gram-negative include the coloration of bacteria, the composition and chemical and physical properties of cell walls. In these tests, bacteria that have an outer membrane and a periplasmic space are considered gram negative and pink in color (sometimes similar to red) due to their cellular composition. For this reason we can state that there is no discrepancy present in the bacteria exposed in the question; Because this bacterium has an outer membrane and a periplasmic space, then it is normal for the bacteria to turn pink due to its cell wall composition.

6 0

3 years ago

Find the kinetic energy of a ball moving at 45 m/s with a mass of 0.18kg

mamaluj [8]

Answer:182.25 joules

Explanation:

Mass=0.18kg

Velocity=45m/s

Kinetic energy=(mass x(velocity)^2)➗2

Kinetic energy=(0.18 x 45^2) ➗ 2

Kinetic energy=(0.18x45x45) ➗ 2

Kinetic energy=364.5 ➗ 2

Kinetic energy=182.25

Kinetic energy=182.25 joules

5 0

3 years ago