What happens during diffusion? responses
a. particles move from an area that is more concentrated to an area that is less concentrated.
b. particles move from an area that is less concentrated to an area that is more concentrated.
c. particles move to different areas but always return to their starting point.
d. particles move slightly but stay in almost the same place?

Answers

Answer 1

The answer should be A, particles move from an area that is more concentrated to an area that is less concentrated.

The process of diffusion happens naturally, no extra energy is needed for this process. Think of a cup of water. If you put a drop of blue ink to the cup of water, you will see that at first the ink stays in a drop, then slowly spread out to the other parts of water until the whole cup of water is blue. This is the process of diffusion. The ink particles moves from a area of higher concentrated (the drop) to the area of lower concentration (the rest of the water). The net movement of diffusion happens until equilibrium, where both sides of the solution has a same concentration of solute (ie. The whole cup of water turns blue). At this time, the particles still move freely, but they don't have a net movement (the particles moving to the left side equals to the one moving to the right).

Note that diffusion applies to any fluid (liquid/gas), and the net movement must be down a concentration gradient.

Answer 2

Final answer:

During diffusion, particles move from an area that is more concentrated to an area that is less concentrated.

Explanation:

During diffusion, particles move from an area that is more concentrated to an area that is less concentrated.

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Related Questions

A journal whose articles are critically reviewed by experts in the field is called a:

Answers

A journal whose articles are critically reviewed by experts in the field is called a: peer reviewed journal.

Peer reviewed journals also known as scholarly journals, are journals that contain articles written by experts and are critically reviewed by many other experts in the field before the publication of the journal in order to ensure that the article is of good quality. When reviewing the journals, the reviewers do not know the article’s author, so that the article fails or succeeds based on its own value and not the owner’s reputation.

Moss spores form inside capsules that break open and shoot spores into the environment. Which does not help carry these spores to new areas? water

rhizoids

animals

wind

Answers

It is a rhizoid. That is the outgrowth of root hair on the underside of the thallus which will help to anchor a plant in place.

What is the species name of a frog that is between 1.5 and 6 inches long, has warts on its skin, and has a triangular mark between its eyes? question 3 options: bufo boreas litoria caerulea pseudacris crucifer acris crepitans?

Answers

What is the species name of a frog that is between 1.5 and 6 inches long, has warts on its skin, and has a triangular mark between its eyes?

Bufo boreas

Acris crepitans

Litoria caerulea

Pseudacris crucifer

-->Acris Crepitans is the correct answer.

Identify the two main regions of a typical mollusk's body

Answers

Head foot and visceral mass

Most of the mollusks species are gastropods. The body of the mollusk is made of shell and fleshy part. The fleshy part is divide into foot and visceral mass. Foot is a distinct feature of mollusk. They use it mainly for locomotion. The visceral mass involves the organs for circulation, digestion and other important processes in living organism. The visceral mass has two external flaps of tissue called as the mantle. It secretes calcerous shell and encloses a mantle cavity.

The main regions of a typical mollusk's body is head foot and visceral mass. The Mollusks are soft bodied invertebrates. They have 4 body parts that are head and foot, shell, visceral mass and mantle. The main two parts are the head and foot and visceral mass. The Visceral mass is where digestion, respiratory, reproductive and excretory are held. On the other hand the foot is used to give a sense of balance and the head is used to carry one or two tentacles.

The flow of surface run-off can be controlled by building retaining walls called _____.

Answers

Final answer:

The flow of surface run-off can be controlled by building retaining walls called levees, which are key components of flood control systems. In addition to levees, reservoirs collect and store water for various uses, and conservation efforts are important for sustainable water management. Aqueducts and desalination are other methods used to meet freshwater demands.

Explanation:

The flow of surface run-off can be controlled by building retaining walls called levees. The purpose of a levee is to prevent the overflow of rivers, lakes, or oceans from flooding adjacent land. Levees are often part of a larger flood control system, which may include dams and reservoirs. By building a levee, water is contained within the riverbanks, and the risk of flooding to surrounding areas is reduced.

Another method of controlling water flow is through the use of sandbags, which can be placed around potential breaches or leaks in levees or embankments as a temporary measure. According to Environmental Biology 207, sandbags can balance a massive body of water by creating a barrier that stops further flow. Reservoirs also play an essential role by collecting water and storing it for use during drier periods, providing benefits such as water supply, hydroelectric power, flood control, and recreation.

Conservation and Sustainable Management of Water

Conservation is crucial for sustainable water management, involving measures like high-efficiency appliances and behavioral changes to reduce water consumption. In areas where water is scarce, desalination can provide fresh water by removing salt from seawater, although this process is expensive and energy-intensive. Aqueducts transfer water from regions where it is abundant to those where it is needed, but they can lead to controversial political issues and environmental impacts on the source regions.

The ________ is the area of the brain where higher level thinking and self-regulation occur.

Answers

The Prefrontal Cortexis the area of the brain where higher-level thinking and self-regulation occur; the peak of overproduction takes place at about 1 year of age.

Prefrontal Cortex is the area of the brain where its the highest level thinking and self regulation occur.

Hope it helped!

Answer will be bold!

What phrase BEST describes a community?

A. the different types of predators in an area
B. the various species of plants in an area
C. all populations of organisms living in an area,

Answers

A community is all populations of organisms living in an area. All members of the various species inhabiting a particular geographical area are considered part of the community of the area.

Answer: The correct answer is -

C. all populations of organisms living in an area.

Explanation:

Community can be described as interacting group of populations belonging to different species, inhabiting any particular location.

For instance, a forest of trees and growing plants, which is also inhabited by different animals and microbial population forms biological community of that area.

Continuous cell lines differ from primary cell lines in that question 12 options:
a.viruses can be grown in continuous cell lines.
b.continuous cell lines can be maintained through an indefinite number of generations.
c.continuous cell lines always have to be reisolated from animal tissues.
d.continuous cell lines are derived from primary cell lines.
e.continuous cell lines are from human embryos.

Answers

Continuous cell lines differ from primary cell lines in that continuous cell lines are derived from primary cell lines.

Continuous cell lines can be propagated indefinitely, while primary cell lines have a limited lifespan.

Option (b) is correct.

Continuous cell lines differ from primary cell lines in that they can be maintained and propagated through an indefinite number of generations, whereas primary cell lines have a limited lifespan and eventually undergo senescence or cell death.

Continuous cell lines are derived from primary cell lines through a process called immortalization, where they acquire the ability to divide indefinitely. These cell lines are often used in research laboratories and biotechnology applications because of their ability to provide a continuous and consistent source of cells.

Unlike primary cell lines, continuous cell lines do not need to be reisolated from animal tissues repeatedly. They can be cultured in the laboratory under specific conditions, and they are widely used for studying cell biology, drug testing, vaccine development, and viral propagation, among other applications.

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Name one negative consequence of exponential human population growth.
greater biodiversity
increased pollution
longer life expectancy

Answers

The only negative option given is: increased pollution. Humans unfortunately cause pollution through producing garbage, driving cars, producing human waste (sewage) and growing crops and raising livestock. The more people there are, the more pollution results. It is worth noting that people in developed nations generally cause more pollution because they consume more per capita that people in developing nations.

Answer:

The correct answer is "B" increased pollution

Explanation:

got it on USAtestprep ;D

Which of the following events encouraged Somali fishers to become modern-day pirates?

A. The Somali government's inability to protect its resources
B. Attack
s by international pirates on Somali fishers
C. The illegal entry of cargo ships into Somali waters
D. Legal fishing in Somali waters by international fishers

Answers

Answer:

Explanation:

Legal fishing in Somali waters by international fishers encouraged Somali fishers to become modern-day pirates. Therefore, option (D) is correct.

Who were Somali fishers?

Somali fishers are individuals who work in the fishing industry in Somalia, a country located in the Horn of Africa. Due to a lack of effective government control and the effects of overfishing by foreign fleets, Somali fishers have faced significant challenges in recent years. The depletion of fish stocks in Somali waters has made it difficult for local fishers to make a living, leading some to turn to piracy as a means of survival.

In addition, the activities of international ships, including illegal fishing and dumping of toxic waste, have further damaged the environment and the livelihoods of local fishers. The issue of Somali piracy has become a complex problem involving economic, environmental, and political factors.

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During which trimester is the developing embryo susceptible to damage that could lead to birth defects due to the fact that there is such a rapid amount of change taking place in the embryo?

Answers

Hello :)

I believe its during the 2nd trimester

Hope this helps :)

Answer:

A. first trimester

Explanation:

this is the riskiest weeks because of the fact that you dont know if it is going to survive

One of the characteristics of a nutritious diet is that the foods provide enough of each essential nutrient, fiber and energy. this principle of diet planning is called:

Answers

This principle of diet planning is called adequacy. An adequate diet provides the human body with energy and nutrients for optimal growth, maintenance and repair of tissue, cells and organs. Water, carbohydrates, fats, proteins, vitamins and some minerals comprise the six nutrient classes that are relied upon for performance of essential functions and activities.

If you looked at unknown cells under a microscope, what could lead you to correctly conclude that they are prokaryotic cells

Answers

The main difference between a prokaryotic cell and a eukaryotic cell is that the prokaryotic cell have no true nucleus instead its genetic material is just suspended in its cytoplasm termed as nucleoid. The nucleus when viewed under the microscope is a membrane bound which is easily distingushable compared to the nucleoid.

Another distinguishing feature is that prokaryotic cells are usually smaller than eukaryotic cells.

A minimum of 100 years of isolation is required for two populations to accumulate enough differences to be considered different species. true or false: a minimum of 100 years of isolation is required for two populations to accumulate enough differences to be considered different species.

a. True

b. False

Answers

false, it would not accumulate enough differences to be considered different species.

______________ is the tendency of new parts of the brain to take up the functions of the injured parts.

Answers

Answer:

Plasticity

Hope this helps

Excess of which vitamin can cause toxic effects of excess perspiration and fishy body odor

Answers

Choline is a vitamin responsible for metabolism, maintenance of the integrity of cell membranes, and most commonly, for the synthesis of the major neurotransmitter acetylcholine. In the excess choline in the body results in toxicity manifested as excess perspiration, fishy body odor, diarrhea, and low blood pressure.

which of the following separates layers of different density?
A)Incline
B)Halocline
C)Thermocline
D)pycnocline

Answers

The answer should be D. Hope I Helped!

Answer:pycnocline

Explanation:

I just had a question that was the opposite, instead of asking density and the answer is pycnocline, mine was asking pycnocline and the answer was density

Circulatory systems compensate for _____. circulatory systems compensate for _____. the problem of communication systems involving only the nervous system the need to cushion animals from trauma temperature differences between the lungs and the active tissue the slow rate at which diffusion occurs over large distances

Answers

Circulatory systems compensate for the slow rate at which diffusion occurs over large distances.

Diffusion is the process of molecules moving from a place of high concentration to a place of low concentration, which happens thanks to the chemical potential gradient, such as the concentration gradient (the difference in the concentrations). This process is used by our cells, for example, in the transport of oxygen, since it can diffuse through the cell membrane and into the cell, when the concentration of oxygen is higher in the intercellular space.
Diffusion is generally a slow process when it comes to large distances, so for example, oxygen would take a lot of time to get from one place in the body to another, since it would have to diffuse through millions of cells.
This is where the circulatory system comes into play. Thanks to the circulatory system, the oxygen can simply enter the blood flow, and be transported by the hemoglobin in the red blood cells from our lungs to all the cells in our body much faster. Same goes for different molecules that the circulatory system transports, like nutrients, amino acids, carbon dioxide, hormones. These are all transported throughout our body at a rate much faster than the rate of diffusion, and diffusion is used in the capillaries, at the target cells after the molecules have already been transported by the blood.

Final answer:

The circulatory system compensates for the slow rate at which diffusion occurs over large distances, facilitating efficient transport of materials within the body. Additionally, it also compensates for the limitations of having only the nervous system for communication by disseminating signals broadly to the body via hormones and other messengers.

Explanation:

The circulatory system compensates for the slow rate at which diffusion occurs over large distances, amongst other functions. Within the body, materials like oxygen, nutrients, and waste products need to be transported from one region to another. Relying on simple diffusion would be quite inefficient due to the slow rate at which it processes. Therefore, the circulatory system acts as a network of highways, speeding up the transport process significantly.

Furthermore, it's critical to understand that the circulatory system also compensates for the problem of communication systems involving only the nervous system. While the nervous system is crucial for fast and targeted responses, the circulatory system disseminates hormones and other signals broadly to the entire body. It’s a slower communication method, but it affects all parts of the body simultaneously, which can be beneficial for many types of responses.

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How does using killed or weakened bacteria in an immunization help the body prevent infections?

A.) Antibodies are formed that fight those types of bacteria.
B.) The body develops a fever that kills beneficial bacteria.
C.) Bacterial reproductive cycles are disrupted.
D.) Bacteria-fighting viruses are activated.,

Answers

The answer is A.) Antibodies are formed that fight those types of bacteria.

To explain, your immune system protects you from invasive bacteria by attacking and destroying them. The problem is that your system needs to recognize invading organisms like bacteria. Remember that bacteria cells have many of the same types of structures as your own cells, and you do not want your immune system to attack your own body. Special cells called T-cells and B-cells participate in this process. To make a long story short, antibodies are special molecules that your immune system "labels" invading bacteria with, so that it knows what to attack. These antibodies only fit on molecular structures of the targeted bacteria.

When a dead or weakened bacteria, or even pieces of a bad bacteria are introduced to the body, the B-cells and T-cells create antibodies that label that specific type of bacteria, or even its parts. They also remember how to make them in the future, so that later, when and if infected with a live version of that bacteria, the immune system already makes the antibodies to fight that infection. The process can work for viruses too.

Answer:

A. antibodies

Explanation:

Bacitracin blocks the transport of nag and nam across the cytoplasmic membrane to the cell wall. like other antimicrobials that block cell wall synthesis, this would result in weak cell walls and __________.

Answers

Bacitracin blocks the transport of nag and nam across the cytoplasmic membrane to the cell wall. Like other antimicrobials that block cell wall synthesis, this would result in weak cell walls and cell lysis. Antimicrobilas that act by inhibiting cell wall synthesis include beta-lactams, vancomycin and cycloserine and isoniazid and ethambutol among others. They prevent bacteria from increasing amount of peptidoglycan, they have no effect on existing peptodoglycan layer and therefore are effective only for growing cells.

Final answer:

Bacitracin is an antibiotic that inhibits bacterial cell wall synthesis, causing the cell wall to weaken and eventually leading to cell lysis or the bursting of the cell due to osmotic pressure. This means that the bacitracin is particularly effective against certain types of bacteria, while not harming human cells. It is commonly used in topical ointments due to potential kidney damage from prolonged use.

Explanation:

Bacitracin is a peptide antibiotic that inhibits bacterial cell wall synthesis by blocking the movement of peptidoglycan precursors, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM), across the cell membrane. The cell wall becomes weak due to insufficient peptidoglycan, a major component of the cell wall in bacteria. This results in cell lysis, where the cell bursts due to osmotic pressure because the cell wall can't hold the cell contents.

Bacitracin, like other cell wall synthesis inhibitors such as B-lactams and glycopeptides, exhibits selective toxicity as it targets a feature not present in human cells - peptidoglycan in the cell wall. Antibacterials like bacitracin are effective and popular because they do not harm human cells at the same time as they kill bacterial cells, which makes them particularly potent against Gram-positive bacteria like Staphylococcus and Streptococcus commonly found on the skin. However, it's important to note that prolonged use of bacitracin can lead to kidney damage, so it is often used in combination with other antibiotics like neomycin and polymyxin in topical ointments such as Neosporin.

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The hormone epinephrine binds to β adrenergic receptors on smooth muscle cells of the bronchioles, causing them to dilate (increase in diameter). thyroid hormone is essential for the synthesis of β adrenergic receptors; therefore, in the absence of thyroid hormone, epinephrine cannot trigger bronchodilation. this concept is known as __________.

Answers

The answer is permissiveness.

Thyroid hormone exerts a significant effect on the ability of the smooth muscle cells in bronchioles to respond to other hormones, especially catecholamines (including epinephrine). Thyroid hormone binds to the receptors on the surface of the cells and allow more receptors to accept epinephrine, which in turn, allows bronchodilation.

The loss of a fetus before the 20th week of pregnancy is referred to as a(n) ___________. The medical term is spontaneous abortion, but the condition is not an abortion in the common definition of the term. A) toxemia. B) miscarriage. C) ectopic pregnancy. D) embryonic pregnancy.

Answers

I am pretty sure it is B, my second choice is D, its definitely not A or C.

I hope this helps you:)

the answer is mscarriage, b.

Answers

Insertion of a narrow flexible tube, or catheter, through a blood vessel into the heart to withdraw blood samples, measure pressures, and inject contrast medium for imaging purposes is called Cardiac catheterization. Cardiac catheterization is a procedure to examine how well the heart is working. A thin, hollow tube called a catheter is inserted into a large blood vessel that leads to the heart. It is normally performed if one has a disease of the heart muscles, valves, or coronary arteries. During this procedure, the pressure and blood flow in the heart can be measure and therefore a problem or a disease can be diagnosed; or the efficiency at which the heart is working.

Which structure provides a protective outer covering for bones and assists with fracture repair?

Answers

Periosteum is the thin yet tough outermost layer of bones. Its many collagen fibers support the bone and firmly connect it to the surrounding structures. Osteogenic cells in the periosteum play a vital role in the growth and repair of bony tissue.

Yesterday nadia consumed 250 grams of carbohydrate, 75 grams of protein, and 60 grams of fat. 57) what percentage of calories of her day's intake came from fat?

Answers

number of calories gained when eating different types of food differs. Some food types are more fattening relative to other types.
the number of calories consumed when eating carbohydrates -
- 4 calories/ gram * 250 g = 1000 calories
calories gained eating proteins -
- 4 calories/gram * 75 g = 300 calories
calories gained eating fats
- 9 calories/ gram * 60 g = 540 calories
total amount of calories consumed = 1000 + 300 + 540 = 1840 calories

percentage of calories coming from fats = 540/1840 *100% = 29.3 %

The term "hearing impaired" is preferred by most deaf adults. true false

Answers

This would be false.

"what advantage do organisms that reproduce sexually have over organisms that reproduce asexually?"

Answers

Organisms that reproduce sexually have greater genetic and thus characteristic variations, and so, are able to withstand more selection pressures if they so happen to change or become greater. This increases the chances of survival for that species itself.

Organisms that reproduce asexually are genetically identical to each other. They are unlikely to withstand any changes in selection pressures.

Hope this helps! :)

A woman age 49 years has sought care from her primary care provider because of "intimacy problems." upon questioning, the woman reveals that she is experiencing sexual desire, but that intercourse causes her significant pain. in the absence of sexual activity, the woman states that she does not have any significant vaginal discomfort. what would the clinician recognize that this client is most likely experiencing? dyspareunia vulvodynia vaginismus a sexually transmitted infection (sti)

Answers

The clinician recognize that a 49 years old woman is likely to be experiencing is Dyspareunia

Dyspareunia is a painful sexual intercourse due to medical or psychological cause. The pain can primarily be on external surface of the genitalia or deeper in the pelvis upon deeper pressure against the cervix. It can affect a small portion of the vagina or it may felt over the surface.

What is the term given to the genetic makeup of the organism?

Answers

genotype is the answer

Structural unemployment can be caused by ____________.

Answers

It can be caused by fluctuations in the business cycle.

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Hope this helps ! Good Studying !

Photon

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