Which of these scenarios is
similar to the process of
facilitated diffusion?
A. Going to jail
B. Being locked out of your house
C. Being escorted into a building
D. Building a LEGO tower
Answers
The scenario that is similar to the process of facilitated diffusion is being escorted into a building since it involves an agent making movement easier. The correct option is C.
What is facilitated diffusion?Facilitated diffusion is the movement of molecules of a substance from regions of high concentration to regions of low concentration facilitated by certain transmembrane proteins in cells.
Facilitated diffusion helps move molecules of substances across the selectively permeable cell membrane of cells.
Therefore, in facilitated diffusion, an agent helps to make the movement of molecules faster.
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Answer: Being escorted into a building
Explanation:
Related Questions
Bully whippets are homozygous for a deletion of two base pairs in the myostatin gene. This deletion changes an mRNA codon in the middle of the myostatin mRNA from UGU to UGA. Use your knowledge of the genetic code to determine the effect of this mutation on the structure of the resulting protein.
Answers
Explanation:
The deletion of two base pairs in the myostatin gene in bully whippets results in a frameshift mutation. This means that the reading frame of the mRNA is shifted, causing all subsequent codons to be read incorrectly. The mutation changes an mRNA codon in the middle of the myostatin mRNA from UGU to UGA, which is a stop codon.
UGU normally codes for the amino acid cysteine, but UGA does not code for any amino acid. Instead, it signals the end of the protein chain. Therefore, the mutation results in premature termination of the myostatin protein synthesis.
The resulting protein will be truncated and incomplete, lacking the C-terminal portion of the myostatin protein. This deletion is likely to affect the function of the myostatin protein, which is a negative regulator of muscle growth. As a result, bully whippets have increased muscle mass and strength compared to other whippet breeds.
Answer:
The genetic code is a set of rules that dictates the correspondence between the nucleotide sequence in DNA or mRNA and the amino acid sequence in proteins. Each codon in the mRNA specifies a specific amino acid, and the reading of the codons occurs in sets of three.
In this case, the deletion of two base pairs in the myostatin gene changes an mRNA codon from UGU to UGA. The codon UGU encodes for the amino acid cysteine, while UGA is a stop codon that signals the end of translation. Therefore, the mutation results in a premature termination of translation, leading to the production of a truncated protein that lacks a portion of the myostatin protein's normal sequence.
Since myostatin is a negative regulator of muscle growth, the mutation in the bully whippets leads to a loss of function of the myostatin protein, resulting in increased muscle mass and the "bully" phenotype observed in these dogs.
if t takes P-wave five minutes to travel from the epicenter of an earthquake to seismic station, approximately how long will it take for a S-wave to travel the same distance?
Answers
An S-wave would therefore need to travel the same distance from the epicenter to the seismic station in about 8.33 minutes.
S-waves move at a speed that is typically between 60% and 70% that of P-waves. For this computation, a cautious estimate of 60% is used.
We can calculate the time it would take for an S-wave to traverse the same distance if P-waves take five minutes to reach the seismic station by dividing the P-wave time by 0.6:
Time for S-wave equals Time for P-wave / 0.6, or 5 minutes divided by 0.6 results in 8.33 minutes.
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Answer as many as u can
Answers
Answer:
8Aa
BABA8Ab
AACC8Ac
CBDRicketsWhich of these is a hazard of commercial fishing?
A. a drop in the water table
B. reduced demand for seafood
C. injury from machinery
D. increased biodiversity
Answers
The injury from machinery is a hazard of commercial fishing.
What does commercial fishing mean?Commercial fishing is the activity of catching fish and other seafood for profit, particularly among wild species. It supplies a large amount of food around the world, but those who practice it as an industry sometimes look for long conditions from the ocean's limits, in adversaries.
If any damage to machinery occurs, it will end commercial fishing, causing deaths and oil in the seas.
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A cleft chin is a dominant trait. One parent is heterozygous for cleft chin, and the other parent does not have a cleft chin. What is the probability that the offspring will have a cleft chin? 1 out of 4 2 out of 4 3 out of 4 4 out of 4
Answers
Answer:
2 out of 4
Explanation:
Let the allele for cleft chin be represented by A, while the alternate recessive version would be a.
A parent that is heterozygous for cleft chin would have the genotype Aa.
A parent without cleft chin would have the genotype aa.
Aa x aa
Aa Aa aa aa
Aa - cleft chinned = 2/4
aa - normal chin = 2/4
Thus, two out of every four (2/4) of their offspring would have cleft chin.
Lewis is running in a race. His muscles need oxygen. Which best describes how multiple systems interact to bring him into homeostasis?
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the skeletal system.
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the skeletal system.
Answers
Answer:
The circulatory stem brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
Explanation: Hope this helps! :)
What is meant by the term primary producer in the food chain?
Answers
Answer:
Hmm...
Explanation:
Think plants, grass, algae, etc. Base of the food chain.
\( \large{ \underline{ \bf{Primary \: Producers}}}\)
They are autotrophic organisms which fix up the solar energy and manufacture their own food from inorganic material.They form the base of the food chain constituting first tropic level \( \sf (T_1) \).Example: Phytoplankton, Grasses, Trees, etc.The diagram shows the Sun-Earth-Moon system during a
solar eclipse.
Which two conditions must be met for a solar eclipse to occur?
A. Earth blocks sunlight from reaching part of the Moon's surface.
B. The Moon crosses through Earth's orbit during a new moon.
C. Earth crosses through the Moon's orbit during a full moon.
D. The Moon blocks sunlight from reaching part of Earth's surface.
Answers
The two conditions that must be met for a solar eclipse to occur are:
B. The Moon crosses through Earth's orbit during a new moon.D. The Moon blocks sunlight from reaching part of Earth's surface.What is a solar eclipse?A solar eclipse is a celestial event that occurs when the Moon passes between the Sun and the Earth, blocking the Sun's rays and casting a shadow on a portion of the Earth's surface. During a total solar eclipse, the Moon completely covers the Sun, revealing the Sun's outer atmosphere, or corona, which is otherwise not visible.
During a solar eclipse, the Moon passes between the Sun and the Earth, blocking the Sun's rays from reaching a portion of the Earth's surface. This can only occur during a new moon, when the Moon is positioned between the Sun and Earth, and its shadow falls on the Earth's surface.
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A group of rabbits lives in an area that normally has mild winters that are not too cold. This
winter, however, is very cold with lots of snow. Which trait would best help a rabbit survive this
environmental stress? *
(1 Point)
A. extra thick fur
B. long ears
C. dark colored fur
D. little body fat
Answers
Answer:
A. Extra thick fur
Explanation:
Because the winter is cold and little body fat and a dark colored fur will get it killed faster, but long ears can help the bunny hear the danger but I don't think there will be any predetors out in the harsh snow.
Flowers shaped for their pollinators, specific camouflaged color patterns of animals, and a beaver's enormous front teeth for gnawing are all examples of
Answers
Flowers shaped for their pollinators, specific camouflaged color patterns of animals, and a beaver's enormous front teeth for gnawing are all examples of adaptation
What is adaptation ?The modification of an organism to its environment in order to increase its chances of survival is known as evolutionary adaptation, or simply adaptation.
A living thing can modify itself to fit its surroundings. A plant growing at a higher altitude, for instance, might change its metabolism or the types of nutrients it needs to thrive. Another perspective on adaptation is genetic.
An animal's morphological or behavioural characteristics that aid in their better survival in their environment are referred to as adaptations. In other words, an adaptation is something a person does or has on their body that facilitates locating food, water, partners, and shelter.
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The geologists at Penn State recorded a lag time of 140 seconds between the P and S waves for an earthquake. How far is Penn State from the epicenter?
Answers
The distance from Penn State to the epicenter of the earthquake is approximately 350 kilometers.
How far is Penn State from the epicenter?To determine the distance between Penn State and the epicenter of the earthquake, we can use the time lag between the P and S waves, which is related to the distance from the epicenter through a mathematical formula that depends on the speed of seismic waves in the Earth's interior.
The lag time between the P and S waves is 140 seconds, which means that the seismic waves traveled from the epicenter to Penn State in 140 seconds.
The speed of seismic waves in the Earth's interior depends on the type of rock they pass through. On average, the speed of P waves is about 6 kilometers per second, while the speed of S waves is about 3.5 kilometers per second.
Using the formula:
distance = speed x time
we can calculate the distance from Penn State to the epicenter as:
distance = (6 km/s - 3.5 km/s) x 140 s
distance = 2.5 km/s x 140 s
distance = 350 km
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Which is of the following is necessary for natural selection? 1. There must be a shortage of food 2. There must be a change in the environment, causing individuals to change 3. There must be some genetic differences among the individuals of a species 4. all of the above
Answers
Answer:
It's 3!
Explanation:
There must be genetic differences so the best fitted organisms will survive. If they were all the same then no one would be best fitted and Natural Selection wouldn't be able to occur
It's not 1 because a food shortage isn't required, there's always competition for food sources
It's not 2 because there doesn't need to be a change in the environment for natural selection, just for evolution.
And it can't be 4 if 1 and 2 are wrong!
Hope this helped!
Which diagram correctly shows how heterozygous alleles are found on homologous chromosomes
Answers
The following figure accurately depicts how heterozygous alleles can be located on homologous chromosomes: Aa ( The first diagram ).
What is chromosome and its function?DNA is ordered most highly in chromosomes. The primary role of chromosomes is to transport DNA and pass genetic material by one generation to the next. Cell division depends heavily on chromosomes. They shield the DNA against damage and tangling.
Is chromosome a sperm?Male cells include X and Y chromosomes, whereas female cells have two X chromosomes. Sperm cells have either an X or a Y chromosome, whereas all egg cells have an X chromosome. Because of this arrangement, the sex of the baby is decided by the male during fertilization.
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Answer:
the last image, (a, a)
Explanation:
i put Aa (the first one) and it was wrong
Which is an example of substances reacting chemically?
a. Paper being cut into small pieces
b. Chocolate melting in a pan
c. Flour and sugar mixed together in a bowl
d. Iron and oxygen forming rust
Answers
Answer:
D
Explanation:
Iron and oxygen forming rust.
Answer:
D
Explanation:
Iron and Oxygen forming rust is a chemical reaction. It creates something new and it changes its chemical formula. Both signs of a Chemical Reaction
The Mohorovicic discontinuity is the __________.
A) division between the lithosphere and asthenosphere
B) boundary between solid and molten rock
C) transition from granitic to basaltic crust
D) boundary between outer core and inner core
E) boundary where crust gives way to mantle
Answers
The line between the crust and mantle is known as the Mohorovicic Discontinuity, abbreviated Moho. This barrier is situated at a depth of the Earth's surface of about 2891 kilometres.
The boundary between both the crust and the mantle is currently known as the Mohorovii discontinuity, sometimes referred to as the Moho. It is a distinct leap in seismic wave velocity. As you are surely aware, the earth's surface and mantle are separated by the Mohorovicic Discontinuity. It would be constructed of many elements, including oxygen, iron, sodium, silicon, & aluminium. Rocks that make it up the Earth's crust & mantle would contain these elements.
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E FilI in the blanks :
1. Carbon dioxide is released during the process of_.
2. Exchange of gases in plants takes place through the cracks in bark is_.
3. Yeast undergoes_
respiration
4. The final products obtained in the anaerobic respiration are_,_,_.
5._ is the energy currency of the cells.
6. The breathing and respiration in woody stem of a plant takes place through_.
7. During Marathon race, we sometimes get painful contractions of leg muscles due to the accumulation of_.
8. The process of respiration which releases energy takes place inside the cells of the body is known as_.
9. The mechanism by which organisms obtain oxygen from air and release carbon dioxide is called_.
10. Seat of respiration is_.
Answers
Answer:
1. Carbon dioxide is released during the process of cellular respiration
2. Exchange of gases in plants takes place through the cracks in bark is Lenticel
3. Yeast undergoes aerobic respiration
4. The final products obtained in the anaerobic respiration are lactic acid, carbon dioxide, and water
5. ATP-Adenosine Triphosphate is the energy currency of the cells.
6. The breathing and respiration in woody stem of a plant takes place through lenticels
7. During Marathon race, we sometimes get painful contractions of leg muscles due to the accumulation of lactic acid
8. The process of respiration which releases energy takes place inside the cells of the body is known as cellular respiration
9. The mechanism by which organisms obtain oxygen from air and release carbon dioxide is called breathing.
10. Seat of respiration is mitochondria
Credit to Kirstenbruke3376
Which two statements correctly describe the theory of plate tectonics?
O A. It does not explain the discovery of one type of fossil on multiple
continents.
B. It explains how continents have shifted over time.
O C. It proves that the theory of continental drift is incorrect.
D. It was developed based on data that scientists collected about
the ocean floor.
Answers
Answer:
B and D
Explanation:
The following two statements correctly describe the theory of plate tectonics:
It explains how continents have shifted over time.It was developed based on data that scientists collected about the ocean floor.What is the theory of plate tectonics?Plate tectonics is the theory that ties continental motion and seafloor spreading together. Lithosphere is topped with oceanic and/or continental crust to form plates. Seafloor spreading causes plates to move around on the Earth's surface. Seafloor spreading is caused by convection in the mantle. At mid-ocean ridges, oceanic crust is formed. Over time, the crust slides away from the ridge.hence the continents move due to plate tectonics.learn more about theory of plate tectonics here:
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Select the correct answer.
Kelvin's cow is showing signs of poor health. The cow is staying away from the herd and is not alert in its environment. The veterinarian believes that the cow is affected by
some type of infection. He also states that the lack of white blood cells in the cow is making it less resistant to the infection. Which system of Kelvin's cow is not functioning
properly?
А. muscular system
B. endocrine system
C. nervous system
D. circulatory system
Answers
Answer:
Circulatory system.....
Pick 1 macromolecule and show/explain how digestion breaks it down and biosynthesis builds a polymer
( any macromolecule is fine!)
Need help ASAP
Answers
B. F. Skinner developed many of the principles ofSelect one:a. classical conditioning.b. operant conditioning.c. iconic memory.d. echoic memory.
Answers
B. F. Skinner developed many of the principles of operant conditioning. This type of learning involves modifying behaviors through reinforcement or punishment.
What are the principles of B. F. Skinner?
B. F. Skinner is best known for developing the principles of operant conditioning, which involve the use of rewards and punishments to shape behavior through learning. This type of conditioning focuses on the consequences of behavior and how they influence future actions.
In contrast, classical conditioning focuses on associating a previously neutral stimulus with a significant one, while iconic memory and echoic memory are related to visual and auditory memory, respectively. Skinner also studied memory and how it is impacted by conditioning, particularly through the reinforcement of certain behaviors to improve memory retention. Therefore, Skinner's work encompassed both learning and conditioning, as well as their relationship to memory.
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The use of a vaccine to stimulate the immune system to act against a specific pathogen is valuable maintaining homeostasis because.
Answers
The use of a vaccine to stimulate the immune system to act against a specific pathogen is valuable in maintaining homeostasis because it helps to prevent diseases and infections from spreading throughout the body.
Vaccines introduce weakened or inactivated forms of pathogens or their components into the body, triggering an immune response without causing severe illness. This exposure enables the immune system to recognize the pathogen and produce specific antibodies and immune cells to target and eliminate it.
By stimulating the immune system, vaccines enhance the body's ability to defend against future infections by the same pathogen. This immune memory response allows for a faster and more robust reaction if the individual encounters the actual pathogen later on.
As a result, vaccines help maintain homeostasis by reducing the likelihood of illness and controlling the spread of infectious diseases within a population.
Furthermore, vaccines contribute to overall population health and well-being. By achieving high vaccination rates, herd immunity can be established, protecting individuals who are unable to receive vaccines due to medical conditions or age.
This collective immunity helps maintain a balanced and stable environment, limiting the transmission and impact of infectious diseases on a larger scale.
The use of vaccines in stimulating the immune system is crucial for maintaining homeostasis by preventing and controlling infectious diseases, promoting individual and population health, and establishing herd immunity to safeguard vulnerable individuals.
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You are stranded on a boat in the middle of the ocean with no fresh water on board. However, you are not alone, and some of those with you want to drink ocean water. You tell them they should not do that but they don’t believe you. Use your understanding of osmosis to convince them WHY drinking salt water is very bad and a potentially deadly idea.
Answers
Answer: Your welcome!
Explanation:
Osmosis is the process by which water moves from an area of low salt concentration to an area of high salt concentration. When you drink salt water, the water in your body has a lower salt concentration than the salt water you are consuming. The salt water will then try to move into your cells, attempting to balance out the salt concentrations. This process causes your cells to swell as they become filled with water, and too much of this can cause cells to rupture. Additionally, salt water causes dehydration because the body can’t process the salt, and the body will expel water to try to dilute the salt. So drinking salt water can be extremely dangerous because it can lead to dehydration and can cause cells to rupture.
During the citric acid cycle what happens to acetyl-CoA?
Answers
Answer:
The citric acid cycle: In the citric acid cycle, the acetyl group from acetyl CoA is attached to a four-carbon oxaloacetate molecule to form a six-carbon citrate molecule. Through a series of steps, citrate is oxidized, releasing two carbon dioxide molecules for each acetyl group fed into the cycle.
Explanation:
In humans, clubfoot has a heritability of 0.8. Expression of clubfoot is a. strongly influenced by environmental factors. b. determined by dominant alleles at least 80% of the time. c. inherited from an affected person 80% of the time. d. solely dependent on inheritance of the clubfoot gene(s). e. strongly dependent on inheritance of the clubfoot gene(s) but also influenced by environmental factors.
Answers
The correct answer is e. Clubfoot has a high heritability of 0.8, indicating a strong genetic component. However, environmental factors also play a role in the expression of the condition.
Heritability refers to the proportion of variation in a trait that is due to genetic factors. A heritability of 0.8 indicates that 80% of the variation in clubfoot can be attributed to genetic factors. This suggests that clubfoot is strongly influenced by inheritance of the clubfoot gene(s). However, environmental factors such as prenatal exposure to tobacco smoke, drugs, or infections can also affect the development of clubfoot.
Furthermore, not all individuals who inherit the clubfoot gene(s) will necessarily develop the condition, indicating that other factors are also involved. Therefore, the expression of clubfoot is strongly dependent on inheritance of the clubfoot gene(s) but is also influenced by environmental factors.
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what is the force that causes the fi ltration of the blood by capillaries in the kidneys to occur?
Answers
The force that causes the filtration of the blood by capillaries in the kidneys to occur is known as glomerular filtration pressure or net filtration pressure.
It is a combination of three pressures:
Glomerular hydrostatic pressure: This is the pressure of the blood against the walls of the glomerular capillaries. It is the primary driving force for filtration and tends to push fluid out of the capillaries and into the renal tubules.
Capsular hydrostatic pressure: This is the pressure exerted by the fluid already present in the renal tubules against the walls of the tubules. It tends to oppose filtration by pushing fluid back into the capillaries.
Blood colloid osmotic pressure: This is the pressure exerted by the proteins in the blood, which tend to pull fluid back into the capillaries.
The net filtration pressure is the difference between the glomerular hydrostatic pressure and the sum of the capsular hydrostatic pressure and the blood colloid osmotic pressure. A positive net filtration pressure results in filtration of the blood, while a negative net filtration pressure results in reabsorption of fluid back into the capillaries.
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what does a centromere hold together?
Answers
Answer:
Structure in a chromosome that holds together the two chromatids
Explanation:
which statement best describes how enzymes function in the body?
Answers
Answer:
Qual afirmação descreve melhor como as enzimas funcionam no corpo?
Explanation:
espero ter ajudado boa noite
when two species occupy exactly the same niche, one species will be eliminated from the community by: A. the keystone species B. the superior competitor C. a secondary disturbance D. a primary disturbance
Answers
QUESTION 1 Exercise 11.10. Butterflies. Alice, Bob, and Charlotte are looking for butterflies. They look in three separate parts of a field, so that their probabilities of success do not affect each other. • Alice finds 1 butterfly with probability 17%, and otherwise does not find one • Bob finds 1 butterfly with probability 25%, and otherwise does not find one • Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one Let X be the number of butterflies that they find altogether. Write X as the sum of three indicator random variables, X1, X2, X3 that indicate whether Alice, Bob, Charlotte (respectively) found a butterfly. Then X= X1+X2 +X3. Find the expected value of X by finding the expected value of the sum of the indicator random variables. Your answer will have two decimal places. **This is a straight forward expected value of a sum of random variables, nothing fancy here! QUESTION 2 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? O A. Example 11.10, sampling without replacement O B. Example 11.11, sampling with replacement QUESTION 3 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. What is the expected value of getting the first head? This will be an integer answer. QUESTION 4 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The next step is to find the expected value of getting the second head. Because this is identical to finding the expected number of rolls for the first head (independent events), we just multiply the first head's expected value by 2. This will be an integer answer. QUESTION 5 Exercise 11.17 (a). Waiting for favorite song. Michael puts his iTunes on shuffle mode where songs are not allowed to be replayed. He has 2,781 songs saved on iTunes, and exactly one of these is his favorite. How many songs is he expected to have to listen to until his very favorite song comes up? Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? A. Example 11.11, sampling with replacement B. Example 11.10, sampling without replacement
Answers
In Exercise 11.10, the expected value of the number of butterflies found by Alice, Bob, and Charlotte is obtained by finding the expected value of the sum of three indicator random variables.
In Exercise 11.16, the expected value of the number of flips needed to get the second head in a coin flipping experiment is determined. These exercises involve different scenarios of sampling with and without replacement.
In Exercise 11.10, the expected value of X, the total number of butterflies found, is found by calculating the expected value of each indicator random variable (X1, X2, X3) representing whether Alice, Bob, and Charlotte found a butterfly, respectively.
The expected value of each indicator variable can be obtained by multiplying the probability of success (finding a butterfly) by 1 and the probability of failure (not finding a butterfly) by 0. Then, the expected value of X is calculated as the sum of the expected values of the indicator variables.
In Exercise 11.16, the expected value of X, the number of flips needed to get the second head, is determined. To find this value, we first need to find the expected value of getting the first head. This scenario is similar to Example 11.11, which involves sampling with replacement.
Each coin flip is an independent event, and the probability of getting a head is constant at 0.5.
Therefore, the expected value of getting the first head is 1/p, where p is the probability of success (0.5 in this case).
In Exercise 11.17 (a), the scenario of waiting for a favorite song in Michael's iTunes playlist involves sampling without replacement. Each song played is not replayed, and there is only one favorite song among the total number of songs.
Therefore, this scenario is similar to Example 11.10, sampling without replacement.
To find the expected number of songs Michael needs to listen to until his favorite song comes up, the formula for sampling without replacement is used, which is the reciprocal of the probability of selecting the favorite song at each step.
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Are hydrogen bonds formed between all molecules?
No because hydrogen can only form these bonds with oxygen atoms.
No because hydrogen can only form these bonds with highly electronegative atoms.
Yes because hydrogen can easily form bonds with atoms that have a neutral charge.
Yes because hydrogen can form these bonds with weakly electronegative atoms.
Answers
Hydrogen bonds are not formed between all molecules because hydrogen can only form these bonds with highly electronegative atoms (Option B).
What are the hydrogen chemical bonds?Hydrogen chemical bonds are a special class of bonds composed of hydrogen atoms and electronegative atoms such as oxygen which relies on the difference of electrical charges between these types of atoms in order to form strong chemical bonds.
Hydrogen bonds can be considered to be a dual dipole type of interaction between different atoms such as nitrogen or N, oxygen or O, which are able to interact with hydrogen due to these electrical charges (hydrogen is positive and O or N are negative)
Therefore, with this data, we can see that hydrogen chemical bonds are only formed by hydrogen in connection with highly negative atoms which include for example oxygen (O) or nitrogen (N).
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