Answer:
where's the specimen buddy ????
Explanation:
Catalysts increase the rate of a reaction by
A) being consumed during the reaction.
B) raising the temperature of the reaction.
C) raising the concentration of the reactants.
D) lowering the activation energy of a reaction.
Answer:
d
Explanation:
It increases the reaction rate by lowering the activation energy for a reaction
Catalysts increase the rate of a reaction by lowering the activation energy of a reaction. Thus, Option D is correct.
what is activation energy?Energy is defined as the capacity to do work, while activation energy is completely different that is In a chemical reaction the energy required to form an activated complex .
In a chemical reaction minimum amount of extra energy required by a reactant to convert into product called activation energy.
It can be represented as Ea and measured in the form of joules or kilojoules per mole or kilocalories per mole.
Two major factors which influence activation energy, such as Nature of Reactants like ionic reactant.
Here the value activation energy will be due to an attraction between two reactants.
Second factor is the role of Catalyst, that is positive catalyst will lower the activation energy where as negative catalyst increase the activation energy.
Hence, Option D is correct.
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Identify the organelles labeled on the cell to the right.
A
B
C
D
E
F
A cell is the smallest unit of any living species and is responsible for functions, structural building and growth. Cells contain organelles inside them that have various functions and roles.
The labelling of structures are:
A: NucleusB: LysosomeC: CentrioleD: CytoplasmE: Cell membraneF: MitochondriaThe roles of cell organelles are:
The nucleus is the main hereditary and regulatory organelle of cells and stores the genetic material called DNA.Lysosomes have digestive enzymes that break the extra or damaged cells. They also digest some viruses and bacteria that invade the body.Centrioles are found in pairs near the nucleus and forms spindles during the process of mitosis and meiosis.The cytoplasm is a viscous fluid inside the cell membrane where all the organelle lies and functions as a medium in cellular chemical reactions.The cell membrane acts as a barrier between the outer and inner cell environment and allows the entry and exit of proteins transport.Mitochondria is the most vital cell organelle and produces the energy required for cell functioning. It is the place where chemical reactions occur to produce ATP.Therefore, the correct labelling are A: Nucleus, B: Lysosome, C: Centriole, D: Cytoplasm, E: Cell membrane and F: Mitochondria.
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why does the nuclear membrane break down and go away during cell division
Answer:
f
Explanation:
Answer:
The nuclear envelope (NE) is actively remodeled during mitosis. Microtubule-organizing centers (MTOCs) insert into the NE in closed mitosis. The NE disassembles during open mitosis to facilitate spindle formation. Membrane bending, composition and stabilization are associated with MTOCs.
You are tasked with reviewing a scientific manuscript to determine whether it hould be published. Based on the following abstract, briefly describe 3 reasons why you would ject this paper for publication due to the incorrect use of methods or interpretation of the ata from those methods.
Wetlands play a large role in carbon and nutrient cycling, yet the microorganisms in wetlands are understudied. Here we examine grazing, viral lysis, and microbial community structure in a Louisiana wetland. Metaproteomics of the microbial community showed that Archaea were the dominant microbes present in this environment. We next examined the mortality of bacteria using the gut pigment method and the frequency of visibly infected cells, concluding that only 5% of the bacteria were being grazed per day by microzooplankton, but 20% of the bacteria were estimated to be infected with lytic viruses. Finally, we used the viral reduction method to show that only 5% of the bacteria had lysogenic viral infections. This study provides new insights into the roles of microbes, including Archaea, in this highly productive wetland system. a) ( 4 points) Reason 1 to reject the manuscript: b) ( 4 points) Reason 2 to reject the manuscript: c) ( 4 points) Reason 3 to reject the manuscript:
a) Reason 1 to reject the manuscript: Lack of appropriate controls and validation for metaproteomics analysis, making the claim of Archaea dominance unreliable.
b) Reason 2 to reject the manuscript: Inadequate methods for assessing bacterial grazing and viral lysis, leading to potentially inaccurate conclusions about their impact in the wetland.
c) Reason 3 to reject the manuscript: Insufficient description and validation of the viral reduction method used to estimate lysogenic viral infections, undermining the reliability of the results.
a) Reason 1 to reject the manuscript: Inadequate method for assessing microbial community structure
The manuscript relies on metaproteomics to determine microbial community structure in the wetland. However, metaproteomics alone may not provide a comprehensive understanding of microbial diversity and abundance. It is essential to employ complementary methods like 16S rRNA gene sequencing or shotgun metagenomics to validate and support the findings. Without utilizing other techniques, the study's conclusions regarding the dominance of Archaea may be incomplete or biased.
b) Reason 2 to reject the manuscript: Flawed interpretation of grazing and viral lysis data
The manuscript claims that only 5% of bacteria in the wetland were being grazed per day by microzooplankton based on the gut pigment method. However, this method has limitations and can lead to an underestimation of grazing rates. The authors should have considered using additional approaches such as fluorescence microscopy or stable isotope tracer experiments to accurately assess grazing impact.
Similarly, the estimation that 20% of bacteria were infected with lytic viruses might be misleading. The method used to estimate viral infection should be clearly described, and alternative techniques, such as viral particle counts or viral metagenomics, could provide more robust evidence of viral activity. Without appropriate validation, the conclusions drawn from these data may be unreliable.
c) Reason 3 to reject the manuscript: Insufficient evidence for viral reduction assessment
The viral reduction method employed in the study claims that only 5% of the bacteria had lysogenic viral infections. However, the manuscript does not provide adequate details about the specific methodology employed for viral reduction and how it measures lysogenic infections. Additional controls, such as heat-treated samples or comparisons to untreated samples, are necessary to ensure the validity of the results. Without proper experimental design and controls, the conclusions drawn from the viral reduction data lack sufficient evidence and reliability.
Overall, these three reasons highlight methodological shortcomings and inadequate interpretation of data in the manuscript. The inclusion of complementary methods, careful consideration of limitations, and rigorous experimental design are essential for the publication of this study.
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if a trait currently affects fitness but arose under different conditions in the past for a different function, what is it considered currently?
If a trait that currently affects fitness, arose under different conditions in the past for a different function, it is considered as an exaptation.Exaptations are traits that evolved for one function but have been co-opted for a new function. For example, feathers initially evolved in dinosaurs for insulation and display but were later co-opted for flight.
In this scenario, feathers are an exaptation, because their original function did not involve flight but was later co-opted for that function.Exaptation does not refer to traits that have evolved in the past and no longer serve a function. Rather, it refers to traits that currently serve a function but evolved for a different function.
These traits do not refer to those that have evolved in the past and no longer serve a function but instead refer to traits that currently serve a function but evolved for a different function. Many of the traits that organisms currently possess have evolved for different functions.
They might have been selected for a specific task, but through time, it may no longer be useful for that same purpose. Rather than disappearing from the organism altogether, the trait might be put to use for some other function.Exaptations are an important part of this process and demonstrate the complexity and adaptability of the biological world.
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Which of the following tables correctly matches the complex molecules and what
they can break down into?
The table that correctly matches the complex molecules with respect to what they can break down into is the second one.
What is meant by complex molecules?The Complex molecules may be defined as the types of molecules which are typically constructed up of chains and rings that significantly contain atoms of hydrogen, oxygen, and nitrogen, as well as carbon in their structure.
Some examples of organic complex molecules are proteins, nucleic acids, carbohydrates, fats, lipids, etc. Proteins are considerably broken down into amino acids because they are the building blocks of proteins. Similarly, carbohydrates are broken down into simple sugars, while fats are broken down into fatty acids.
Therefore, the table that correctly matches the complex molecules with respect to what they can break down into is the second one.
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how do hydrogen bonds make water cohesive?
Answer:
Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other.
Explanation:
what are two constants in this experiment
Answer:
I do not see any experiment, your gonna have to post a picture of it or type out what it is.
Which cellular process takes place in the ribosomes that are bound to the
endoplasmic reticulum?
A. The replication of nucleic acids
B.The breakdown for waste material
C.The conversion of radiant energy to glucose
D.The synthesis of new proteins
Answer:
I belivie the answer is C
Explanation:
The endoplasmic reticulum can be smooth or rough, and in general its function is to produce proteins so that the rest of the cell can function. The rough endoplasmic reticulum contains ribosomes, which are small, round organelles whose job is to make these proteins. Sometimes when proteins are made improperly, they get caught in the endoplasmic reticulum and overload it, leaving it cramped, in a way, and the proteins don't go where they should go. Then there is the smooth endoplasmic reticulum, which has no ribosomes in it, and which produces other substances that the cell needs. Thus, the endoplasmic reticulum is an organelle that is really a workhorse in the production of proteins and substances that the rest of the cell needs.
I hope help you
how plants will be affected by change in water intermolecular forces
a plant cell is placed in a hypotonic solution. turgor pressure will…
When a plant cell is placed in a hypotonic solution, turgor pressure will increase.
A hypotonic solution is a solution in which the solute concentration is lower than that of the cell. When a plant cell is placed in such a solution, water enters the cell by osmosis.
As a result of the cell membrane and cell wall's resistance, the cell swells up, causing turgor pressure to increase.
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Cartoonists create animated films by drawing a sequence of ____ or cells
Cartoonists create animated films by drawing a sequence of frames or cells. These frames are individual drawings of images that when displayed in rapid succession, create the illusion of motion, similar to how a flipbook works. When drawing these cells, cartoonists take into account the fluidity of the movements.
the expressions of the characters, and the overall narrative of the film. The process of creating an animated film starts with storyboarding, where the sequence of scenes and actions are sketched out. This is followed by creating the character designs, which will be used in the final film.
Once these designs are finalized, the animators will start drawing the frames or cells, keeping in mind the storyboard and the desired movements. Each frame is meticulously drawn by hand, taking into account even the slightest of movements.
After all of the cells are completed, they are photographed or scanned and transferred to a computer for further editing. This includes adding color, sound effects, and voiceovers. Finally, the individual frames are stitched together to create the final animated film that viewers see on the screen.
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what are the most economically 'productive disasters'?
Answer:
1. Disasters increase scarcity and reduce the output of economies.
In simplest terms, inputs are necessary for outputs; fewer inputs means fewer outputs. When a disaster damages or destroys resources – whether labor, capital, or natural resources – total production in the economy must fall.
The production possibilities frontier (PPF) is used by economists to model “production possibilities” – the output possible in an economy making full use of its available resources. The PPF shrinks when disasters reduce the availability of the resources used to make goods and services.
Explanation:
A human pancreatic cell obtains O2 Fuel molecules such as glucose and building material such as amino acids and cholesterol from its environment and releases CO2 as a waste product of cellular respiration. In response to hormonal signals the cell secrets digestive enzymes. It also regulates its ion concentration‘s by X changing with its environment. Based on what you have just learned about the structure and function of cellular membranes write a short essay that describes how such a cell accomplishes these interactions with its environment
Answer:
Cells Can Respond to Changes in Their Environments. Chemicals that could move through cells, either through diffusion through the cell membrane or by the action of transport proteins, and could bind directly to proteins within the cell and modulate their activities.
Explanation:
Cells Can Respond to Changes in Their Environments -:The environments in which cells grow are often rapidly changing. Cells, for instance, can consume all of a certain food source and must use others. Cells have developed strategies for adapting their biochemistry to function in a changing world in response to signals suggesting environmental change. The modifications can take many forms, including changes in the activities of pre-existing enzyme molecules, changes in the synthesis rates of new enzyme molecules, and changes in the processes of membrane transport.
To form colonies with specialized functions, some cells may interact -: Early organisms lived exclusively as single cells. Such organisms interacted with one another only indirectly by competing for resources in their environments. However, some of these species have evolved the capacity to construct colonies that involve several interacting cells. In such classes, the presence of surrounding cells, which may be in direct contact with one another, dominates the environment of a cell. These cells communicate with one another by a variety of signaling mechanisms and may respond to signals by altering enzyme activity or levels of gene expression. Cell differentiation can be one result; differentiated cells are genetically similar but have distinct properties because they express their genes differently.
As individual single cells, some modern organisms will turn back and forth from existence to existence as multicellular colonies of differentiated cells. One of the best described is the slime mold Dictyostelium. In suitable environments, this organism lives as individual cells; under conditions of starvation, however, the cells come together to form a cell aggregate. The cells expand, replicate and live as individual cells when they arrive in a well-stocked location until the food supply is again depleted. This aggregate will migrate as a unit to a potentially more favorable environment, often called a slug, where it then forms a multicellular structure , called a fruiting body, which rises significantly above the surface on which the cells are developing. Wind will move cells released from the top of the fruiting body to places where the supply of food is more abundant.
Hence, the answer is given about the cell interaction with its environment.
1) In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
10 pounds of Fish and 0 pounds of Fruit is an attainable combination.
True
False
2)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
11 pounds of Fish and 0 pounds of Fruit is an efficient combination.
Select one:
True
False
3)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
As Crusoe spends more time catching fish and hence catches more fish, what happens to the opportunity cost of one more pound of Fish?
Select one:
a. none of the answers
b. Does not Change
c. Indeterminate
d. Decreases
e. Increases
Clear my choice
4)
In Possibility A, Crusoe can produce 0 pounds of fish and 28 pounds of fruit.
In Possibility B, Crusoe can produce 4 pounds of fish and 24 pounds of fruit.
In Possibility C, Crusoe can produce 7 pounds of fish and 19 pounds of fruit.
In Possibility D, Crusoe can produce 9 pounds of fish and 13 pounds of fruit.
In Possibility E, Crusoe can produce 10 pounds of fish and 7 pounds of fruit.
In Possibility F, Crusoe can produce 11 pounds of fish and 0 pounds of fruit.
In case of a move from A to B, what is the opportunity cost of one more pound of Fish?
Select one:
a. 3 less pounds of Fruit
b. none of the answers
c. 1 less pound of Fruit
d. 2 less pounds of Fruit
e. 4 less pounds of Fruit
1) False 2) False 3) The opportunity cost of one more pound of Fish decreases as Crusoe spends more time catching fish 4) The opportunity cost of Fish from Possibility A to Possibility B is 3 less pounds of Fruit.
1) The given combination of 10 pounds of Fish and 0 pounds of Fruit is not attainable since it does not correspond to any of the possibilities provided. None of the possibilities mention this specific combination.
2) The combination of 11 pounds of Fish and 0 pounds of Fruit is not efficient. Efficiency refers to achieving the maximum possible output with the given resources. Since Possibility F allows Crusoe to produce 11 pounds of Fish and still produce 0 pounds of Fruit, it indicates that more Fruit could be produced without sacrificing Fish production. Therefore, it is not an efficient combination.
3) As Crusoe spends more time catching fish and catches more fish, the opportunity cost of one more pound of Fish decreases. Opportunity cost refers to the value of the next best alternative that is given up when making a choice. In this case, as Crusoe catches more fish, he has to allocate more time and resources to fishing, resulting in a decrease in the production of fruit. The decrease in fruit production represents the opportunity cost of producing one more pound of Fish.
4) The opportunity cost of one more pound of Fish when moving from Possibility A to Possibility B is 3 less pounds of Fruit. This is because Crusoe gives up the production of 3 pounds of Fruit (from 28 to 24 pounds) in order to produce 4 pounds of Fish instead of 0 pounds. The difference in Fruit production between the two possibilities represents the opportunity cost of producing one more pound of Fish.
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how is the length of treatment connected to the face that mycobacterial species tend to grow very slow
The length of treatment is connected to the fact that mycobacterial species tend to grow very slowly because these bacteria are slow growing and the rate of growth of the bacteria is a determinant of the duration of treatment needed to completely eliminate the bacteria.
The slow-growing nature of mycobacterial species makes it difficult to completely eliminate them with short-term antibiotic therapy. Tuberculosis and other diseases caused by mycobacteria are typically treated with long-term antibiotic regimens, often for six months or more, to ensure that all of the bacteria are eliminated.
The antibiotics used to treat tuberculosis and other mycobacterial diseases are typically bactericidal, which means they kill the bacteria, rather than simply inhibiting their growth. However, because mycobacterial species grow slowly, it can take a long time for the antibiotics to fully eliminate all of the bacteria in the body. Hence, the duration of the treatment is connected to the slow growth rate of these bacteria.
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Which of the following events would decrease competition for resources in an ecosystem? a disease reduces the population of rabbits in a grassland area a drought reduces the amount of water available to an ecosystem a fire has killed off a portion of the vegetation many offspring are produced in a single year
The event that would decrease competition for resources in an ecosystem is many offspring produced in a single year.
The ecosystem is the system that is formed by living beings (flora, fauna, and humans) and their interactions with the environment in which they live. In ecosystems, competition is common and intense. All living beings require food, water, light, space, and other resources, and not everyone can obtain them.A drought that decreases the amount of water available to an ecosystem can increase the competition for water. A disease that reduces the population of rabbits in a grassland area will reduce competition for food, but will not affect competition for other resources.
A fire that kills off a portion of vegetation will also reduce competition for food, but it may increase competition for other resources. The event that would decrease competition for resources in an ecosystem is many offspring produced in a single year. It reduces competition for food because the offspring will consume less food and have fewer needs than adult individuals. Therefore, the production of many offspring can lead to increased competition between the offspring for limited resources, but decreased competition between offspring and adults.
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1. IF A ROCK IS SOFT WILL IT break down fast
Answer:
if a rock it's self is readily broken apart it has lots of cracks and fractures, allowing rainwater to drain through it quickly.
Explanation:
I hope that helps sorry if it's wrong.
Using the drop-down menus, identify the structures
common to all cells.
Label A
Label B
Label C
Label D
Lol, never got that answer huh? Well for anyone else...
Label A - DNA
Label B - cell membrane
Label C - ribosomes
Label D - cytoplasm
edge 2020
Answer:
B, C ,D, A
Explanation:
where are the eletrons found in the structure of an atom
Electrons are found in orbits around the nucleus
Answer:
found in the nuculace
Explanation:
Most organisms contain the same codons.
True or false?
Answer:
True
Explanation:
Answer:
True
Explanation:
"Theoretically, the genetic code is universal. This means that the same codon "means" the same amino acid in all organisms. For example, in both humans and bacteria, a codon made of three thymine DNA-letters will code for an amino acid called Phenylalanine."
Fill in the blanks:
National park is an __________
method of conservation of bio-diversity.
22 PŐĨŃŤŚ ÁŚ Á ŔĔŴÁŔĎ!
How can an ore threaten the environment?
one can threaten the environment by polluting because when u pollute it affects the air but people health not only that it affects our oceans and it can kill the animals. it also makes our air quality so bad by 2050 its gonna be so bad we will not be able to breathe. it also affects the ice where the polar bears are and right now its melting and so there wont be any place for the bears to lay or rest it will just be complete water
Can a population of rabbits grow continuously without a limit?
What characteristics are common between
mitochondria and chloroplasts?
I) ATP is produced;
II) DNA is present;
III) Ribosomes are present.
1. I only
2. II only
3. II and III only
4. III only
5. I, II and III
Answer:
I believe that the answer is Three
Explanation:
Even though both organelles are found in eukaryotic cells, both mitochondria and chloroplast have characteristics often found in prokaryotic cells. These prokaryotic cell characteristics include: an enclosed double membrane, circular DNA, and bacteria-like ribosomes.
Complements of Wikibooks.org
Explanation:
Mitochondria and chloroplasts are similar in size and features to prokaryotes. The deep folds of the inner mitochondrial membrane, called cristae, resemble the folds in the prokaryotic cell, called mesosomes. Both cristae and mesosomes function in aerobic cellular respiration.
is anaerobic respiration? write the word equation for the process.
Answer:
Some examples of anaerobic respiration include alcohol fermentation, lactic acid fermentation and in decomposition of organic matter. The equation is: glucose + enzymes = carbon dioxide + ethanol / lactic acid. Though it does not produce as much energy as aerobic respiration, it gets the job done.
what structure is highlighted? keratinocyte hair shaft cuticle of hair hair follicle connective tissue sheath
The hair follicle is the structure that is highlighted in the given question. The hair follicle is a organ found in mammals that cycles through complex regenerative phases, including growth (anagen), degeneration (catagen), and rest (telogen) phases.
During these phases, hair follicles undergo significant changes in length, diameter, and color.What is the hair follicle?The hair follicle is a small, sac-like structure situated in the subcutaneous tissue, which surrounds the hair root. It extends deep into the dermis and is formed by two layers of cells, the inner epithelial root sheath and the outer connective tissue sheath. These two sheaths surround the hair shaft and sebaceous gland, which produces an oily substance called sebum.The hair follicle is a multifunctional structure that performs several essential functions, including regulating hair growth, providing sensory information, thermoregulation, and immunological defense.
Hair follicles consist of various cell types, including keratinocytes, melanocytes, stem cells, immune cells, and neural cells. In conclusion, the highlighted structure is hair follicle.
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How many possible connections are there among the neurons of the brain?
(A) about 500 million
(B) about 500 trillion
(C) about 5 billion
(D) about 50 trillion.
The number of possible connections among the neurons of the brain is about 500 trillion (B).
Neurons are specialized cells that process and transmit information in the brain. Each neuron is connected to other neurons through synapses, which are the sites of communication between neurons. The number of possible connections between neurons in the brain is incredibly large.
According to estimates, the human brain has about 100 billion neurons, and each neuron can form connections with up to 10,000 other neurons. This means that the total number of possible connections in the brain is about 1 quadrillion (10^15).
However, not all possible connections are formed in the brain, and the actual number of connections is estimated to be around 150 trillion (10^14). Therefore, the correct answer to the question is an option (B) about 500 trillion.
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which process(es) has steps called prophase, metaphase, anaphase, and telophase?
a) meiosis and mitosis
b) mitosis and fertilization
c) fertilization only
d) meiosis only
Answer:
It should be A
Explanation:
a landslide blocks a river and creates a high mountain lake trapping a species of salmon and prevents them from returning to the ocean. this species survives and adapts to the lake environment. what is the best description of this event? group of answer choices genetic bottleneck mechanical isolation founder effect ecological isolation
The best description of the event where a landslide blocks a river and creates a high mountain lake that traps a species of salmon and prevents them from returning to the ocean.
now geographically isolated from the larger population in the ocean. This isolation from the larger population has caused a reduction in gene flow and, consequently, the genetic diversity of the species. Thus, the genetic structure of the species in the mountain lake has been shaped by the founder effect.
The founder effect is considered an essential evolutionary mechanism that can generate new species. Therefore, the event described in the question is best described as the founder effect.
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