A new microorganism is isolated from a lake and is placed into a solution of KCl. The voltage difference across its membrane is measured at 120 mV. How much energy is required to move a proton from the negative side of the membrane to the positive side?

Answers

Answer 1

Answer: [tex]\Delta U=[/tex] 1.922x10⁻²⁰ Joules

Explanation: Electric Potential Energy (U) is the energy a charged object has due to its location in an electric field and it will only exist with the object is charged.

Voltage or Electric Potential Difference (V) is external work done to move a charge from one point to another in a electric field.

These terms have a relationship, which is given by:

[tex]\Delta U=q\Delta V[/tex]

where

q is the charge

Proton is positive and has a charge of 1.6x10⁻¹⁹C.

Unit for potential energy is Joule (J). The relation between mV and J is

1mV = 10⁻³J

Then:

V = 120x10⁻³

V = 0.12

So, for a proton to move from the negative side of a membrane to the positive:

[tex]\Delta U=q\Delta V[/tex]

[tex]\Delta U=1.6.10^{-19}.0.12[/tex]

[tex]\Delta U[/tex] = 1.922 x 10⁻²⁰

Energy necessary to transport a proton from negative side of the membrane to the positive is 1.922 x 10⁻²⁰J.


Related Questions

Why do you think ANIMAL CELLS are able to survive without the types of cell walls that are present in nearly every other group of organisms? Provide 3 answers.

Answers

Answer:

They survive because these cells need a high permeability to be able to maintain the internal cellular balance in relation to the external environment that surrounds them, and this is due to their high energy demand, their multi-complex and multiple functions, and the capacity for constant homeostasis with the environment. that surrounds them.

Explanation:

In addition, some cells need to transmit signals, second messengers or even to fulfill a function to exchange compounds for their transmembrane, this is what makes the human system together with other systems of other animals is extremely open and is in constant energetic exchange, in addition to Unlike plant cells, plant cells are under an autonomous regime, they do not need to take energy from the environment but they manufacture it themselves, and it fulfills a great function that is to provide structure and support, the wall they have is what gives it the ability to fulfill these two functions.

Explain the characteristics you observed when studying the epithelial types of the Epithelial Tissue from Kidney and Epithelial Tissue from Dermis and Epidermis images.

Answers

Answer: The epithelial tissue is a membranous tissue which has a function of covering.

Explanation:

The cuboidal epithelial tissues are present in the proximal convoluted tubules or PCT these tissues help in absorption of materials present in the filtrate generated in the glomerulus. These includes necessary salts, glucose, amino acids, water, gets selectively reabsorbed.

The stratified squamous epithelium are present in dermal layer of the skin. The dermal layer is the layer which receives the nerve supply of blood and nourishment. The epithelium helps in secretion of sweat and protection against microorganisms.  

Today we use the word bureaucracy to refer to any organization that has many departments. T F

Answers

the answer would be true

Today, the word "bureaucracy" is used to refer to any organization that has many departments, which is a false statement as bureaucracy is related to government administration.

What is the significance of the bureaucracy?

The importance of bureaucracy includes making sure that governmental tasks are carried out effectively and efficiently by skilled professionals who are authorities in their fields and are capable of handling their tasks with a high degree of competence. They make sure that government policies are applied consistently and fairly. They are tasked with providing information and support to regular individuals who require it since they are a crucial part of public administration and governance.

Hence, today the word "bureaucracy" is used to refer to any organization that has many departments, which is a false statement as bureaucracy is related to government administration.

Learn more about the bureaucracy here.

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Which are properties of metals? Check all that apply
Dullness
Malleability
Ductility
Poor conductors of heat
Good conductors of heat

Answers

Metals are malleable
Metals are ductile
Metals are good heat and electricity conductors
Metals lose electrons in reactions.

Answer:

2,3, and 5

Explanation:

got it right on edge

i will mark u brainliest!!! What is on the biology module 3 dba? pleasee only leave real answers im struggling lol.

Answers

Answer:

WHat school?

Explanation:

FLVS: What are mutations and how do they occur? Explain their effects on organisms.

Explain how DNA is involved in creating genetic variation within a species. Is this considered a mutation, if so why?

Describe how you can use a Punnett square to predict the probability that offspring will inherit a trait. Provide explanations of genotypes and phenotypes.

Compare mitosis and meiosis. What type of cells are created through mitosis and meiosis and what is the function of each? What makes these processes vital to our survival?

Summarize how protein molecules are made through transcription and translation. Where do these processes take place?

What is genetic engineering? Provide an example of a positive example of genetic engineering technology and its impact on health and genetics.

These should be the questions.

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Red blood cells are able to maintain homeostasis because they are bathed in blood, which is to the fluid in the cells themselves.

Answers

Answer:

this is not a question it is a statement

Explanation:

Please answer
Answer answer answer answer answer answer answer

Answers

Answer:

The nucleus is like the principal of a school, the cell membrane is like a school building, and the mitochondria is like the staff in a school.

Explanation:

Definitions:

The nucleus of a cell contains the majority of the cell's genetic material, and coordinates cell activities like protein synthesis and cell division.The cell membrane is the semipermeable membrane of a cell that surrounds the cytoplasm (the material inside the cell other than the nucleus).The mitochondria is "the powerhouse of the cell", because it produces most of the chemical energy needed to power the cell's chemical reactions.

The nucleus is like the principal of a school: the nucleus controls the cell, much like how the principal controls the school.

The cell membrane is like a school building: the cell membrane forms a boundary between the cell and outside environment, much like how the school building separates you from outside.

The mitochondria is like the staff in a school: the mitochondria powers the cell, much like how the staff in a school keep the school running.

Answer:

Answer

Explanation:

Answer

pls help !!!!!!!!!!!

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the answer is isotonic

Describe limits to cell division.

Answers

Answer:

All cells in the body have this internal control and most cells only divide between 50-70 times before they stop or die.

The study of cells is called cell biology.

The cell theory is given by Rudolf Virchow

The postulates of a cell theory are as follows:-

All the organism is made up of cellThe structure and the functional unit of life is the cell.All the pre-existing cell is made up of old cell.

The limits of the cell division are cancer cells. The cancer cell does not stop after a limit. It divides continuously and forms a tumor.

Hence, the correct answer is a cancer cell.

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How does ground water relate to lakes or rivers?

All lakes and rivers are replenished by groundwater.
When ground water reaches the surface it can form lakes or rivers.
Groundwater can affect the size of lakes and rivers.
Lakes and rivers produce groundwater.

Answers

B is the answer you are looking for

Answer:

When ground water reaches the surface it can form lakes or rivers.

Explanation:

Groundwater in valleys is often pushed under pressure by rainwater that falls on the nearby highlands. If the water table reaches the surface, a lake, a river, or a spring is formed. A spring in desert country is surrounded by plants that take advantage of the water supply, forming an oasis. Water now coming to the surface at oases in the Sahara Desert came from rain that fell on hills near the desert during the Middle Ages--eight hundred to one thousand years ago.

Hope this helps   :)))))

1
ushat is Environment. Pollution?
Se distinguish between-biodegeable and none biodegrabable
Pollutants
e) choose the biodegradable pollutants from the list given
below Sewage :DDT hadioactive waste agricultsal Waste​

Answers

Answer:

Explanation:

the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected. is called environmental pollution.

biodegradable substance are those which decompose naturally left beneficial

to the environment and are used by

but non biodegradable resources are the waste which do not decompose naturally. these waste cause pollution to the environment resulting harmful effect on living beings.

Sewage and agricultural waste are biodegradable waste.

offering 15 pts
*I'm looking for a high-quality complete answer. One or two sentences will not suffice. looking for about two paragraphs. :)

A biologist from another galaxy might think that automobiles are a dominant form of life on planet Earth. Automobiles move, consume gasoline and oil, and produce wastes. They are sheltered in garages and respond to stimuli. Automobiles age and break down, but new automobiles appear every year. They evolve, changing in appearance from year to year.

What arguments would you use to persuade the alien visitor that cars are not alive?

Answers

Answer:

Organisms need 6 things to be considered living which are, responsiveness to the environment, the ability to reproduce, having a metabolism, being able to breathe, maintaining homeostasis, being able to pass down traits, and made of cells. Cars, do not have the ability to reproduce, do not maintain homeostasis, cannot pass down traits, do not have a metabolism, etc... a living being needs to fit all of the criteria to be considered living. In this case, cars do not fit the criteria.

Knowing this, you would tell the alien about the 6 things needed to be considered a living being. After that, you would tell the criteria that the car does not fit which would then explain how a car is in fact, not a living being.  

Explanation:

If a cell in G1 has 20 chromosomes, then at the end of meiosis I there will be _________ chromosomes in each daughter cell, and __________ sister chromatids in each daughter cell.

Answers

Answer:

10 chromosomes

20 chromatids

Explanation:

Meiosis is the process by which sexually reproducing organisms produce gametes for sexual reproduction. Meiosis, which reduces the chromosomal number of the parent cell by half, occurs in two stages namely: meiosis I and meiosis II.

Meiosis I is where the actual reduction in chromosomal number takes place because homologous chromosomes are separated in this stage. For example, a cell in G1 that has 20 chromosomes will have 10 chromosomes in each daughter cell at the end of meiosis I.

Since, DNA replication occurs in the S-phase, sister chromatids are formed for each chromosome. Hence, there would be 20 sister chromatids joined together by a centromere at the end of meiosis I.

in your own, explain why you think that geologists find relative dating useful
i need the answer ASAP

Answers

Answer:

Because they can compare their findings with other geologest and their results.

Explanation:

determine what foods you would take with you on your journey develop a supply list must by 2 paragraphs.

PLEASE HELP ​

Answers

On a Journey to and island i would take a Blade. The blade will he useful to cut tress to make various sorts of Things such as bark to start fires and Bamboo to make beds/tools. Also the blade will help me hunt Food and cut the meat to make it edible.
On the journey i would also take Fire starters because you need a fire for various of things. With the fire you made from the fire starters you can cook food and clean water for survival. Also you can Keep warm during the cold with said fire.

Which of these mechanisms exerts gene control by suppressing transcription in eukaryotes?

A. Acetylation of histone proteins
B. Methylation of DNA
C. Action of activator proteins

Answers

Sets of transcription factor proteins buying a specific DNA sequences in or near a gene and promote or repress its transcription into RNA. Which i believe its C

Answer:

Its B. Methylation of DNA I just took the test.

Explanation:

Which property of water allows it to moderate the temperature of nearby areas of land by resisting temperature changes? How is this important for living organisms?

Answers

Answer:

land because ask water

Explanation:

What is crossing-over, during what phase does it occur, and what is its significance?

Answers

Answer:

Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up. Hope this helps :)

Explanation:

The fruits have several purposes. Which purposes might be similar to those of a cone?

Answers

Answer:

Flowers and cones have different structures. Cones when mature have a woody texture and is made up of scales while flowers have colorful petals, sepals and both male and female reproductive portions are called stamens and pistils.

Explanation:

Answer:

the other side of a cone

Explanation:

what's the best way to study for a final exam in 2 days??​

Answers

So people learn very differently and there is not a correct way to study. If you are a memory person then I would do flash cards. If you are a sports type person then I would say study while bouncing a ball. If your teacher lets you have music make a playlist and study while listening to it. Also if you make up rhymes or saying for things you are more likely to remember them. If you are artistic then draw pictures to help you remember certain things. Also peppermint helps you remember things. Lastly study before you go to bed and get at least 8 hours of sleep before the test. This will put what you studied into long term memory instead of short term. Lastly don’t stress to much because it’s harder to remember what you studied when stressed.
GOOD LUCK ON YOUR EXAM!!

Please help it’s urgent!!! For these 2 questions

Answers

First one is endothermic since you are adding heat
Second one is 75% of our body is water
Hope this helps!!
Plz make me brainliest!

Answer:

The first question is endothermic change of state. The second answer is 75% of our bodies are made up of water

Explanation:

I think this is the answer Hope this helps and I'm sooo sorry if this is wrong.

Animal and plant organs are organized into organ systems, thus resembling the way you organize

Answers

nimal and plants organs are organized into organ systems,much like you organize your homework in. ... The animals in which cells are organized into structural and functional units ... You organize files by storing

Which part of the brain is used to integrate incoming information and send it to the appropriate portion of the cerebrum?

Answers

Answer:

the Brarin that what it is

Sucrose is an organic compound made by plants for quick energy.

What type of organic compound is sucrose?

(a.protein
(b.carbohydrate
(c.lipid
(d.nucleic acid

Answers

Carbohydrates are a large family of organic compounds that contain carbon, hydrogen, and oxygen.
The answer is B.

As shown in the diagram above, at several locations warm, less dense water cools

Answers

What exactly are you trying to ask ??
I don’t see a diagram

Try reducing the level of fossil fuel percentage increase and decrease deforestation by 1 GT per year. Predict what will happen to the atmospheric carbon levels and record it in your Data Table. Run the simulation to test your hypothesis. Were you correct? Were you surprised by the result? What about your result surprised you?

Answers

Answer: The atmosphere can handle almost 700 billion tons of carbon in it. The carbon levels are increasing due to industrial revolution.

Explanation:

The overload of the emission of carbon in the atmosphere surprised me. The data was recorded and investigated for 2000 to 2100. Different parameters like ocean water and fossil fuel. The fossil fuel when burn contribute to the release of carbon monoxide and carbon dioxide gas. The oceanic water release the decomposed carbon dioxide by calcium carbonate of coral reefs and respiration of aquatic animals.

Soil horizons develop as a result of?

Answers

Answer:

translocation, additions, transformation, and removal.

Explanation:

Soil horizons are the result of these four things.

The memory of facts and experiences that people consciously know and can easily recite is known as
memory

Answers

Answer:

also known as EXPLICIT memory, are long term memories relating to specific facts and events that can be verbally stated. ... Memory of facts and experiences that one can consciously know and "declare", Information or knowledge that can be consciously recollected; also called declarative memory.

Explanation:


Organisms that must get there energy from food or other living things are
called:
zenotrophs
heterotrophs
autotrophs
plants

Answers

Answer:

b

Explanation:

heterotrophs animal

What is a feedback mechanism?

Answers

Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself
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