Answer and Explanation:
To promote a good DNA extraction through the Chelex extraction protocol, it is important to follow some measures, which are essential for the entire process to take place efficiently.
The most important measure is to avoid contamination. In this case, all surfaces, container and substances used must be properly sterilized, preventing unnecessary elements from coming into contact with the DNA sample or the protocol reagents.
It is important that the researcher is wearing clean, appropriate clothing and gloves when using this protocol. This avoids impurities and contamination with the researcher's DNA.
Another precaution must be taken with the DNA sample and the reagents that will be used during the extraction. All must be stored correctly, preventing their degradation, especially the DNA, which is a very unstable molecule.
Finally, the researcher must strictly follow all the steps of the protocol as indicated.
I need help with this question !
The signs used depend on the species being surveyed and include the presence of runways and tracks on *
1 point
(a). soft substrates
(b) hard substrate
(c) dry mud
(d) rocks
Answer:
(a). soft substrates
Explanation:
Mobile organisms can be measured by both direct and indirect methods. Direct methods may involve observing the actual behavior (e.g., scoring via timing). Moreover, indirect methods are those where the technique used depends on the species being examined, collecting information such as through recording of tracks in the soft substrate (e.g., mud, sand, snow), presence of fur/feathers, droppings (mammals), etc. For example, indirect observation of insects may involve the determination of exoskeletons, sounds, etc.
If the velocity of a can increases from 30 ms-1 to 90 ms -1, the kinetic energy
increases by
a. 8 times
b. 9 times
c. 7 times
d. 6 times
which of the following are structures common to all chordates? choose all that apply a dorsal nerve cord b, lungs c, true jaws d, pharyngeal breathing apparatus e, backbone
Answer:
tbh, dk
Explanation:
lol
Please answer ASAP will mark brainliest
Answer:
If your body doesn't have enough iron, it can't produce enough healthy oxygen-carrying red blood cells – which can lead to anemia. Anemia is a condition in which the body is not producing enough hemoglobin. With anemia, your cells aren't getting enough oxygen.
Explanation:
Why do people sneeze and cough?
I will give brainly if you explain why.
The sneezing is release of air that helps the body to get rid of irritants in our nose and throat, like allergens, dirt, and dust.
Coughing is by forcing the air out of the lungs with high pressure, to clear the throat of these foreign particles.
Sakura tested the pH of several solutions. Which substance are acidic?
Answer: cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
Explanation:
The substances given are:
cola-flavored soda: 2.6
cranberry juice: 2.9
dish soap: 7.3
pickle juice: 5.5
seawater: 8.0
lye soap: 13.0
Based on a pH scale, an acidic solution is one that has a pH that is below 7, a solution is neutral if the pH is 7 while a basic solution has a pH of above 7.
Therefore, the acidic substance will be:
cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
Which of the following is an example of non Mendelian pattern of inheritance
Answer:
Genomic imprinting represents yet another example of non-Mendelian inheritance. Just as in conventional inheritance, genes for a given trait are passed down to progeny from both parents. However, these genes are epigenetically marked before transmission, altering their levels of expression.Answer:
Just as in conventional inheritance, genes for a given trait are passed down to progeny from both parents.
Hope it help
Which diagram correctly shows how h-zygous alleles are found on h-logous chromosomes?
Answer: I'm pretty sure it's the third one
Explanation:
Answer:
C
Explanation:
Took the quiz about Chromosomes on Edge
What are the steps and information necessary to describe wounds?
Answer:
it's not my fault if you are wrong or not it's your test
Answer:
When it comes to determining the severity of a wound, assess the wound is crucial to determine the appropriate plan of care. The critical steps in assessing the wound include: location, stage, undermining/tunneling, measurement, tissue type/color, drainage/odor, anatomical structures, periwound skin and pain.
what is the important of deamination process in mammals ?
Answer:
In situations of excess protein intake, deamination is used to break down amino acids for energy. The amine group is removed from the amino acid and converted to ammonia.
hope it helps
reasons why transpiration is important in plant
what are the advantages of genetically modified plants
Answer:
advantages are of genetically modified plants are the desired traits it results in but also they well-grown fruits and vegitables will be plump, ripe and delicious.
Explanation:
All cells, whether they are bacterial cells or human cells, share two basic steps of gene expression:
Answer:
They both hold genetic information and ribosomes
Please answer both ASAP Will Mark brainliest
Answer:
Mitosis Has Single Nuclear Division results in 2 Nuclei
2 Daughter Cells Are Produced 2 diploid cells.
Meiosis Has 2 Rounds of Nuclear Division resulting in 4 Nuclei
4 Daughter Cells Are Produced. 4 haploid cells
Both Have Cells divide and Reproduce
Explanation:
the resources and conditions such as food water and climate that need to be present for a species to survive are known as
abiotic factors/components
i think hope that helps
The ecological niche of a species has been defined with the aid of the resources it requires and through its function or characteristic inside the surroundings.
What are the four types of ecosystems?forms of the ecosystemforest ecosystem.Grassland environment.Tundra atmosphere.wasteland surroundings.What is an atmosphere?An ecosystem is a geographic place in which flora, animals, and different organisms, in addition to climate and landscapes, paint together to shape a bubble of life. Earth science, Ecology, Geography, Human Geography, Meteorology, bodily Geography.
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Which is an example of biopsychology
i think its c but u go
Answer:
yeah its c most probable answer
Explanation:
How can histograms help you describe a population? Use the word bank above to help you explain your answer.
Answer: It shows the distribution of the population with respect to a characteristic, quantitative and continuous, such as the weight or height of a population. It is used to determine the degree of homogeneity of the values studied, or to see the degree of variability, and therefore, the dispersion of all the values taken by the parts.
Explanation:
A histogram is a graphical representation of a variable using bars. In such a bar, its area is proportional to the frequency of the values represented. Thus, it shows the distribution of the population, or of the sample, with respect to a characteristic, quantitative and continuous, such as the weight or height of a population. It is used to determine the degree of homogeneity of the values studied, or to see the degree of variability, and therefore, the dispersion of all the values taken by the parts.
In order to construct a histogram first we need to have a frequency table with all the information. On the abscissa axis (horizontal axis) the intervals are placed from smallest to largest. On the ordinate axis (vertical axis), the absolute frequencies of each of the intervals are represented. Then, the rectangular bars of equal width are drawn, and the height represents the absolute frequency. All bars touch the bars next to each other, unless an interval has zero frequency (the height of the bar will also be zero).
Thus, histograms are used to describe populations since they represent a variable and in what proportion of the population it is found.
The population can be given as the number of people living in a specific area. The histogram represents the population, with frequency as the function of the area.
What is a histogram?A histogram is the graphical representation of the data in the form of bars. The population is given as the number of people in an area.
The population in the area is termed as frequency. The bar graph represents the frequency of population as the function of the area and thereby helps in the determination of the population.
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Ok so for hair type I need the percentage for the whole punnett square
Answer:
It's probably 50%
Explanation:
Since Bb is repeated twice, it is 50%.
Hope this helps!
List down (five) 5 daily activities that use water. Opposite of it, write a sentence showing how water is
conserved in each activity.
Answer:
cooking.
watering.
washing plates.
washing clothes.
taking a bath.
Making Inferences Why do
you feel pain when you pull on
your hair or nails, but not when
you cut them?
Answer:
because the pain in our body is from the skin or tissue so when you pull the hair you are actually up rooting it from its attachment with ur skin hense you feel the pain
Like many multicellular organisms, plants have organs that perform specific
functions. Which of the following correctly pairs a plant organ with its function?
A Plant leaves capture nutrients from rain.
B Plant roots absorb water needed for photosynthesis.
C Plant stems store carbon dioxide for cellular respiration.
D Plant flowers provide the energy needed for eggs to develop.
Answer:
B) Plant roots absorb water needed for photosynthesis.
Tools, skills, and science knowledge is known as what?
Answer:
I think the answer is capital
During glycolysis, glucose is split in half, as it's name implies.
True
False
answer:
true
explanation:
during the process of glycolysis one molecule of glucose is broken in half to create two pyruvate molecules
hope this helped!
Answer:
true
Explanation:
What is the relationship between the economy and environmental quality? (3 points)
There is no relationship between the economy and environmental quality.
Generally speaking, better economies are associated with worse environmental quality.
Generally speaking, environmental quality initially declines and then improves as an economy grows.
Generally speaking, better economies are associated with better environmental quality.
Answer:
There is no relationship between the economy and environmental quality.
Environmental quality is a term related to different environmental cues such as, for example, air/water pollution, presence of noise, access to open public spaces, the visual impact of buildings, etc. Environmental quality can affect human health and the quality of life of the individuals in a given area/city. For example, water contamination is linked to the transmission of different diseases (e.g., gastroenteritis; encephalitis, hepatitis A), thereby negatively affecting human health and the quality of life of persons who don't have access to potable water. Similarly, poor air quality can be associated with respiratory diseases and cancer. The improvement in environmental quality does not necessarily involve economic resources. It is possible to improve environmental quality by:1-protecting people against climate change;
2-improving water/air quality;
3-reducing pollution;
4-reducing waste and increasing recycling;
5-limiting the visual impacts of new infrastructure; etc.
In conclusion, there is no direct association between the economy and environmental quality.
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explain tidal air in biology
Someone who can help me please thank you?
Answer:
The dna added on is to give the corn more strenghth
Explanation:
Why are antibiotics ineffective against viruses?
Answer:
antibiotics are useless against viral infections this is because viruses are so simple that they use their host cells to perform their activities for them. so antiviral drugs work differently to antibiotics by interfering with the viral enzymes instead
As altitude increases what happens to air pressure
Answer: It decreases
Explanation: