Answer:
Hello.
• gels can melt during electrophoresis, the buffer can become exhausted, and different forms of genetic material may run in unpredictable forms.
• And the strengths could be that it separates based on size, it is relatively easy to do.
Which is not an example of a particular phenotype being the reason a species has survived in their environment?
Q.
Which is NOT an example of a particular phenotype being the reason a species has survived in their environment?
A-A black wolf in a pack of grey wolves in the forest
A researcher is studying the plants and animals in a particular biome. The observations include ferns, large woody vines, monkeys, sloths, and boa constrictors. In which biome is the researcher located?
Tropical Rain Forest is the biome that include ferns, large woody vines, monkeys, sloths, and boa constrictors.
What is Tropical Rain Forest?Tropical rainforests are the rainforests that occur in the regions of tropical rainforest climate where there is no dry season. Due to such type of climate, there is greater amount of biodiversity.
So we can conclude that Tropical Rain Forest is the biome that include ferns, large woody vines, monkeys, sloths, and boa constrictors.
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Assuming that the population was in hardy-weinberg equilibrium for the g locus, what percentage of moths in the natural population was white in 1962 ?.
The percentage of moths in the natural population that was white in 1962 is : 4%
What is Hardy-weinberg equilibrium ?Hardy-weinberg equilibrium states that the sum total of all the genes of an individual in a population is constant when the disturbing factors such as genetic drift does not occur
p² + q² + 2pq = 1
Determine the percentage of moths in 1962Applying the equation below
p² + q² + 2pq = 1
p = frequency of dominant allele
q = frequency of recessive allele
q² = frequency of h0m0zygous recessive genotype
p² = frequency of h0m0zygous dominant genotype
From the graph
Frequency of G allele ( i.e p ) = 0.8
percentage of white moths = q²
Note : p + q = 1 ---- ( 1 )
Insert value into equation ( 1 )
0.8 + q = 1
therefore ; q = 0.2
Hence the percentage of white moths = ( 0.2 )² = 0.04
= 4%
Hence we can conclude that The percentage of moths in the natural population that was white in 1962 is : 4%
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What is the proper name of the plasma membrane found on a muscle fiber?
Answer:
Answered below
Explanation:
the plasma membrane of a skeletal muscle fiber is called the sarcolemma. The sarcolemma invaginates into the cytoplasm of the muscle cell (sarcoplasm). This forms membranous tubules that pass across the muscle cells.
In the Hardy-Weinberg principle, the actual number values of p and q will not change if five specific conditions are being met. This indicates
Question 1 options:
evolution is occurring only because of mutations
evolution is not occuring
evolution is occurring rapidly because of climate change
evolution is occurring because of natural selection
In the Hardy-Weinberg principle, the values of p and q will not change if evolution is not occurring.
What is the Hardy-Weinberg principle?The Hardy-Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies in a population.
The Hardy-Weinberg principle states that allele and genotypic frequencies remain constant in absence of evolutionary forces.
These evolutionary forces include nonrandom mating, gene drift, gene flow, mutation and natural selection.
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During administration of blood transfusion, a child complains of chills, headache, and nausea. Which action should the nurse implement?
Answer:
stop the transfusion notify doctor
It is very much necessary to be careful while one is in health care organization. During administration of blood transfusion, a child complains of chills, headache, and nausea the nurse should stop the transfusion immediately and notify the healthcare provider.
What are nursing ethics?Nurses are helpers for patients which find a balance while delivering care to patient. There are four main principles of nurse ethics, they are autonomy, beneficence, justice, and non-maleficence.
Each patient has the right to make their own decisions according to their own beliefs and values.
Thus, during administration of blood transfusion, a child complains of chills, headache, and nausea the nurse should stop the transfusion immediately and notify the healthcare provider.
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What type of reaction is represented by the following chemical equation? Explain your answer. 2Na + 2HCl → 2NaCl + H2 + heat
Answer:
This when the metal react with acid.
Explanation:
This is because the HCl is the chemical symbol for hydrochloric acid and Na is the symbol for sodium and when these 2react it forms
sodium chloride + hydrogen + heat
What is the role of DNA?
a: to allow substances to enter the cell
b: to fight infections
c: to encode genetic information and control the cell
d: to release cytotoxins
Answer:
c
Explanation:
every thing related to dna is encoding or transcribing genetic info or genes
Answer:
To encode genetic information and control the cell
Explanation:
I GUESS
A species of squirrel has skin cells that contain 20 chromosomes. How many chromosomes would be found in the sperm produced by heat same squirrel?
Answer:
40
Explanation:
40 chromosomes would be found in the sperm produced by heat same squirrel
40 chromosomes would be found in the sperm produced by heat same squirrel.
What are Chromosomes?A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibres in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
The highest possible level of DNA and protein organisation is seen in chromosomes. Chromosomes' primary job is to carry DNA and pass genetic material from one generation to the next. Cell division involves the critical function of chromosomes. They guard against tangles and damage to the DNA.
For above given example, if 20 chromosomes are present in skin cells, then the squirrel will have 40 chromosomes in the sperm cells.
Thus, 40 chromosomes would be found in the sperm produced by heat same squirrel.
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Describe a physical adaptation of chipmunks. Use complete sentences.
Answer:
A physical adaptation of chipmunks would be their fur thinness or thickness. If their environment demands that they need thicker fur to keep them warm, they will start to grow more fur to adapt physically to the environment.
Explanation:
With your group, list at least three possible uses and/or products of the energy absorbed by the oak leaves that did not contribute to the production of biomass
Answer:
heat loss, energy for cellular process: transpiration, other forms of water, oxygen, carbon dioxide loss
Explanation:
The energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.
What is Biomass?The material from previously living organisms known as biomass is utilised to produce bioenergy. Examples include wood, wood byproducts, energy crops, agricultural waste, and organic waste from commercial and residential sources. The main biomass energy source nowadays is wood and wood waste.
Renewable organic material from plants and animals is known as biomass. Up until the middle of the 1800s, biomass accounted for the majority of the entire yearly U.S. energy consumption. Biomass is a popular fuel in many nations, particularly for heating and cooking in underdeveloped nations.
Thus, the energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.
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What are the 3 types of neurons?
Tq! :)
Answer:
sensory, motor, and interneurons.
Explanation:
For neurons in the brain, at least, this isn't an easy question to answer. For the spinal cord though, we can say that there are three types of neuronssensory, motor, and interneurons.
Answer:
Afferent "Sensory" Neuron
Interneuron "Associative Neuron"
Efferent "Motor" Neuron
Explanation:
The Afferent Neuron or Sensory Neuron receives information from the sensory receptors and carries the impulse from the sense receptors to the central nervous system. In this example the touch receptors in the skin are relaying information through the Afferent "Sensory" Neuron from the environment to the spinal cord.
The Interneuron or the Associative neuron is the transfer station or the decision making neuron. In the case of the reflex arc the Interneuron would make a decision to respond or not respond based upon the intensity of the stimulus.
The Efferent Neuron of Motor Neuron would then return the impulse back to the muscle or gland that would need to respond.
Which of the following best explains why conserving resources is important?
Answer:
we should listen to our elders
Explanation:
resources is important
Approximately
% of the available energy is passed from organisms at one trophic level to organisms at the next trophic level.
Approximately 10% of the available energy is passed from organisms at one trophic level to organisms at the next trophic level. This is known as the 10% rule or the 10% energy transfer efficiency.
What is 10% rule?Energy flows through trophic levels in an ecosystem starting with producers (plants or algae) that convert sunlight into chemical energy through photosynthesis. When herbivores consume these producers, only a fraction of the energy stored in the plants is assimilated into their bodies, while the rest is lost as waste or used for metabolic processes like respiration. This assimilated energy becomes available to the next trophic level.
As energy moves up the food chain, similar inefficiencies occur at each level. Carnivores that consume herbivores receive only about 10% of the energy stored in their prey. This pattern continues as energy is transferred to higher-level predators.
The low energy transfer efficiency can be attributed to several factors. First, organisms expend energy for basic metabolic processes, such as respiration, movement, and growth, which reduces the energy available for transfer. Second, energy is lost as heat during these metabolic processes. Additionally, not all parts of an organism are consumed or digested by predators, resulting in energy losses through waste.
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A sequence of dna that codes for a specific, detectable product, such as a protein or rna is called a
Gene is a sequence of DNA that codes for a specific, detectable product, such as a protein.
What is a Gene?
This is defined as the basic physical and functional unit of heredity and occupy a fixed position on a chromosome.
It is also the sequence of DNA that codes for a specific, detectable product, such as a protein or RNA.
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A sequence of DNA that codes for a specific, detectable product, such as a protein or RNA is called a Gene.
What do you mean by RNA?RNA may be defined as a single-stranded molecule that has a shorter chain of nucleotides that carries genetic information that is translated by ribosomes into various proteins necessary for cellular processes.
Gene is the sequence or stretch of the DNA which carries genetic information. It is the nucleotide sequence that can synthesize functional proteins or enzymes.
Therefore, a sequence of DNA that codes for a specific, detectable product, such as a protein or RNA is called a Gene.
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Which explains how the economic situation in chile in 1980 affected its government? chile’s improving economy led to the government overthrowing a military junta. chile’s worsening economy led to the government electing a socialist president. chile’s worsening economy led to the government being overthrown by a military junta. chile’s improving economy led to the government launching populist programs.
The economic situation best describe by Chile’s worsening economy led to the government being overthrown by a military junta.
What is the economic history of Chile?The economic condition of Chile changed over time.
Due to a worldwide recession, the GDP of Chile dropped to 14.1 in 1980.
The value of the currency is overvalued.
Due to the Asian crisis, in 1997 economic growth depletion started.
Thus, the correct option is C.
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Answer:
C.
Chile’s worsening economy led to the government being overthrown by a military junta.
Explanation:
yes
Which of the following is/are most likely to be part of the gastrointestinal reflex pathway? 1. Stretch receptors 2. Neurons of the autonomic nervous system 3. Muscle fibers of the transversus abdominus.
The stretch receptors and neurons of the autonomic nervous system are parts of the gastrointestinal reflex pathway.
What is Gastrointestinal reflex?This is usually stimulated by senses as a result of the presence of stretch receptors and neurons of the autonomic nervous system.
They help in controlling the release of acids in the stomach and also suppresses the release of digestive proteins.
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I need help I don't understand
PLEASE HELP MEEE!!!
(A simple answer would be great no links please and thank you)
An experiment is
testing how
different fertilizers
affect plant
growth. Which of
the following
would be the
CONTROL
GROUP in this
experiment?
A. the growth of the
plants
B. the fertilizers
C. multiple groups with
the same plant and
fertilizer
D. a plant without
fertilizers
Answer: B
Explanation:
A. the growth of the plants
Fertilizers provide essential nutrients to plants in form of soluble salt compounds, and directly affect plant growth. ... Excess fertilizer alters the soil by creating too high of a salt concentration, and this can hurt beneficial soil microorganisms.
There are how many types of nitrogenous bases?
Answer:
4
Explanation:
There are 4 nitrogenous bases and they are Adenine, Thymine, Cytosine and Guanine (in RNA, Thymine is replaced by Uracil)
Answer:
Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G).
Explanation:
DNA is a polynucleotide. Each nucleotide is made up of deoxyribose sugar, a phosphate group and nitrogenous base. In DNA, there are four main kinds of nitrogenous bases. Adenine (A), guanine (G), thymine (T), and cytosine (C) are the four bases of DNA (C). Purine bases are adenine and guanine, whereas pyrimidine bases are thymine and cytosine. Base pairing occurs between complementary bases on two strands of double-stranded DNA. By two and three hydrogen bonds, A and G link with T and C, respectively. In RNA, uracil is present instead of thymine.
A town’s population size has been slowly increasing for the past five years. The town’s total electricity use has also slowly increased, until last year when it decreased slightly. Explain what could have caused the decrease in the town’s total electricity use.
Make a claim about natural selection
Answer:
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others
Explanation:
A ____________ uses direct elimination of acids, bases, or carbon dioxide from the body in order to adjust systemic acidity.
Answer:
Physiological Buffer
Explanation:
How many dna molecules are in three pair of homologous chromosomes
Answer:
Thus during metaphase of mitosis, each chromosome (i.e., each chromatid pair) will contain two molecules
Explanation:
double stranded DNA (one molecule per sister chromatid). The following diagram depicts the behavior of one homologous pair of chromosomes during mitosis.
Six DNA molecules are there in three pairs of homologous chromosomes. This is because each homologous chromosome will contain two molecules of double-stranded DNA.
What do you mean by Homologous chromosomes?Homologous chromosomes may be defined as two chromosomes of the same length, position, and structure one inherited from the father's side and the other from the mother's side.
The amount of genetic material may vary from phase to phase of the cell cycle. But at the time of metaphase during mitosis, each chromosome will possess two molecules of DNA.
Therefore, Six DNA molecules are there in three pairs of homologous chromosomes.
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What happens is a cell does not recognize something
Answer:
Generally, if a cell does not recognize something, it will launch an immune response.
Explanation:
This is why individuals who have organ transplants must be put on immunosuppressants, when cells do not recognize a foreign body they will immediately assume it is harmful and make an attempt to attack it.
How would an increase in atp affect the rate of glycolysis?.
Answer:
The rate would slow down.
Explanation:
as ATP binds to the regulatory site, lowering phosphofructokinase activity.
At which point on a cladogram do two species share an ancestor?.
Answer:
The node
Explanation:
Each branch point on the cladogram represents where species split off into new ones. The node represents the last point at which 2 new species shared a common ancestor.
Which of the following best describes the total amount of carbon in the system made up of the Earth and its atmosphere?
A. It remains constant because oxygen converts to carbon in the geosphere and hydrosphere.
B. It continually increases as carbon is produced during cellular respiration and trapped in the atmosphere.
C. It continually decreases as carbon is used up during photosynthesis and trapped in the biosphere.
D. It remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere.
Answer:
A
Explanation:
It remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere.
helpppp
What body systems interact and work to expel wastes from the body?
A.
nervous and excretory
B.
nervous and circulatory
C.
digestive and circulatory
D.
digestive and excretory
Answer:
A. and D.
The nervous system removes cervical and metabolic waste from the brain, helping prevent brain problems. Your digestive system cleans the body by removing toxins, and your liver works to clean. The excretory system cleans your blood, allowing for healthy blood that is free of waste.
If you cannot pick more than one option, I would go with D.
Determine whether each phrase mainly describes surface ocean currents or deep ocean currents. found near the top of the ocean caused by prevailing winds caused by differences in water density caused by differences in water temperature influenced by rotation of earth found closer to the ocean floor
Influenced by rotation of Earth
caused by prevailing winds
found near the top of the ocean
The phrases that describe deep Ocean currents are :
caused by differences in water
found closer to the ocean floor
caused by differences in water density
Surface ocean currents are found near the top of the ocean, and they are caused by prevailing winds. The wind creates a force on the surface of the ocean, which causes water to move in the direction of the wind.
What are these currents responsible for ?These currents are responsible for redistributing heat around the planet, making them an important factor in regulating climate.
Deep ocean currents, on the other hand, are caused by differences in water density and temperature. Cold, dense water sinks to the bottom of the ocean, creating a current that can move across the ocean floor.
This process is known as thermohaline circulation, and it helps to redistribute nutrients and oxygen throughout the ocean, making it an important factor in marine ecosystems.
The rotation of the earth also influences ocean currents. Due to the Coriolis effect, surface currents in the Northern Hemisphere tend to flow clockwise, while currents in the Southern Hemisphere tend to flow counterclockwise. This effect is caused by the rotation of the earth and the resulting centrifugal force.
Finally, currents that are found closer to the ocean floor are deep ocean currents. These currents are slower and less visible than surface currents but can have a significant impact on the ocean's circulation and the Earth's climate.
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