Which steps are important when designing and conducting a scientific experiment

Answer:

yes

Explanation:

Friction slows things down. It causes a opposite force on the book causing the speed to slow and come to a stop.

Gel electrophoresis is a widely used technique in molecular biology that allows for the separation of DNA fragments based on their size and charge.

The process involves several steps:

Preparation of the gel: A gel matrix, usually made of agarose or polyacrylamide, is prepared and poured into a gel tray. Small wells are created at one end of the gel, which will hold the DNA samples.

Loading the samples: DNA samples, which have been treated with restriction enzymes to generate fragments of different sizes, are loaded into the wells of the gel.

Applying an electric field: The gel tray is immersed in a buffer solution, and an electric field is applied across the gel. One end of the gel serves as the positive electrode (anode), and the other end as the negative electrode (cathode).

Migration of DNA fragments: When the electric field is applied, negatively charged DNA fragments migrate through the gel towards the positive electrode. Smaller fragments move more quickly through the gel matrix, while larger fragments move more slowly.

Visualization of DNA bands: After the electrophoresis is complete, the DNA fragments are visualized using stains or fluorescent dyes. The bands formed on the gel represent the separated DNA fragments, with each band corresponding to a specific size.

By analyzing the position and intensity of the DNA bands, researchers can determine the size of DNA fragments and gain insights into various genetic phenomena, such as gene mapping, DNA sequencing, and genetic variation analysis.

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Based on the last set of chromosomes, the sex of the Tasmanian devil is male. This is because the Y chromosome is much smaller.

If an individual has two similar sex chromosomes, XX, it is female. If an individual has one X and one Y sex chromosome, it is male.

Therefore, if you know the specific sex chromosome makeup of an individual's last set of chromosomes, you can determine their biological sex. In Tasmanian devils, females have two similar chromosomes, XX, and males have an X and a Y chromosome.

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Answer:

Atmospheric pressure is a source of air from high to high pressure regions, the middle of the earth, the center of the globe, the southern hemisphere, and the connection between the globe and the unit. Between atmospheric pressure and winds to a difference in

The experiment is designed to test "What is the effect of increasing heat on the heart rate of Daphnia?" The microscopic water flea is placed in a petri dish and examined under a directed microscope that is fastened with a heat-producing lamp.

The heartbeat of the Daphnia is then counted for 15 seconds at two-minute intervals, allowing the researchers to observe and measure any changes in the heart rate of the Daphnia as a result of the increased heat. The fact that the Daphnia was placed under a heat-producing lamp and its heart rate was measured at various intervals further supports the conclusion that the experiment was designed to test the effect of heat on the heart rate of Daphnia.

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Answer: the answe is TRUE

Explanation: got it right on edge

Answer:

T

Explanation:

EDGE 2022

Answer:

None

Explanation:

They are all symptoms or effects of the disease.

spongiforma squarepantsii is a Fungus

The mushroom, a native of Borneo, is Spongiforma squarepantsii, one of only two known members of the Spongiforma genus.

Explanation:

Spongiforma squarepantsii is a species of fungus in the family Boletaceae, genus Spongiforma.

Answer:

When the population reaches its carrying capacity.

Explanation:

As a population grows, there is more competition for resources which can limit a population. There are also natural disasters that can play a role too such as disease. Another factor that is part of carrying capacity is the size of the habitat. If there is no room, then the population cannot increase.

Answer: When the organisms compete

Explanation:

ap3x

Answer:

kinda blurry so I hope I answered everything correctly!

A. The Linear equation would be x + y = 50

B. Ted spends 35 minutes practicing the breaststroke every day.

Ted spends 50 minutes every day swimming so x +y = 50 (let us say x is butterfly stroke and y is breaststroke). Since he practices the breaststroke for 20 more minutes than the butterfly stroke we have:

2x + 20 = 50

2x = 50 - 20

2x = 30

x  =30 / 2

x  = 15

y = 15 + 20  =35 minutes

C. No, it is not possible for Ted to have spent 45 minutes practicing the butterfly stroke every day because of the time constraint.

Answer:

1. Food cycle- With Global Warming on the rise the food cycle is being thrown off due to some animals dying off because they aren't getting used to the extreme sudden heat this can also affect humans especially if we seafood. Global warming affects the ocean too killing off a lot of sea creatures that we eat sometimes like Shrimp for example. Study shows that Global Warming is heating up the ocean cooking the live shrimp in the ocean.

2. Timing of seasonal changes- Study shows that places that don't get hit by snowy weather in the Wintertime are getting pounded by winter storms. A perfect example of this is East Coast getting hit by wintery weather while West Coast sees some high temperatures with no moisture this is caused by global warming.

3. Extinction Risks- Another study shows that some animals such as elephants, Siberian Tigers, red Pandas are all on the Endangered species list due to the sudden change in the weather because of Global Warming which brings the extinction-level to an almost high rate. People all around the world are trying all they can to prevent animal species to go extinct and as I mentioned before if a species goes extinct it'll throw off the food cycle.    

4. Range shifts- Since the temperatures are changing dramatically because of global warming it is causing a lot of species to migrate to a new area this is their way of surviving instead of dying off this can also disrupt the food cycle because if a certain species a predator perhaps moves to a different area the prey species will increase and those predators that migrated to a new area is causing a lot of habitat changes to another species its like natural selection and can cause a pretty bad change

So that is why people are up and arms about global warming and why they want to hurry up and come up with a plan to stop global warming or figure out a way to cool down the Earth because it'll not only end in species' extinction but it can lead to Human extinction.

Hope this helped :)

Answer:

the source

Explanation:

Answer: option C.

Mutations are essential for evolution to occur because they produce variations within a population.

Explanation:

This is because Mutation refer to change in the genetic content or DNA composition of organisms. Therefore , for evolution to occur there must be Mutation because it is the main source of genetic variation or causes genetic variation needed for evolution.

Mutation is important as the basics of evolution because it produce a new DNA sequence for a gene function, which lead to the formation of new allele.

DNA replication is a highly accurate process that ensures the correct duplication of genetic material during cell division. However, it is not perfect, and occasional errors or mutations occur. The biological and evolutionary importance of this imperfection lies in two main aspects: genetic diversity and adaptation.

Firstly, these mutations contribute to genetic diversity within a population, providing a variety of traits and characteristics that can be beneficial for survival and reproduction. Genetic diversity is crucial for the long-term survival of a species, as it enables populations to adapt to changing environments and avoid the negative consequences of inbreeding, such as reduced fitness and increased susceptibility to disease.

Secondly, the imperfections in DNA replication facilitate adaptation through natural selection. When an environment changes, individuals with advantageous mutations are more likely to survive and reproduce, passing their favorable genetic traits to the next generation. Over time, this process results in the evolution of species better suited to their environments.

In summary, the imperfections in DNA replication are biologically and evolutionarily important because they promote genetic diversity and facilitate adaptation through natural selection. While high fidelity is necessary for maintaining genetic stability and function, a certain level of imperfection is essential for the survival and evolution of species.

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Answer:

If you don't, finger prints will get on it. ... Place an object on the slide and drop some water over it. Then, drop a cover slip over it at a 45 degree angle.

Explanation:

Answer:

Prions archea, viroids bacteria, viruses protists are acellular while fungi is cellular.

While viruses have indeed been closely researched for more than a century for infections of people and animals, most viruses, particularly those that infect microorganisms, are still poorly understood. 

Pathogenic RNA molecules are known as viroids. Contagious protein particles are identified as prions. Viruses are larger than that of viroids. Viroids are larger than prions in size.

Molds, wild yeasts, as well as mushrooms are examples of fungi. Numerous fungi are multicellular and also have nuclei in their cells. A protein-encased DNA or RNA core defines viruses being non - cellular organisms. Some scientists disagree with the notion that viruses are living things.

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DNA analysis can be used to distinguish different species by comparing specific regions of their DNA sequences.

To distinguish different species by their DNA, scientists primarily focus on comparing specific regions of the DNA sequences that are highly variable among species. One commonly used region is the mitochondrial DNA (mtDNA), which is inherited maternally and has a higher mutation rate compared to nuclear DNA. Another region is the ribosomal RNA genes (rRNA), which exhibit variations among species.

The process typically involves extracting DNA samples from different organisms, isolating the target region of interest, and sequencing the DNA to determine the nucleotide sequence. The sequences obtained from different species are then compared to identify differences and similarities.

These differences can be used to create DNA profiles or genetic markers specific to each species. Advanced techniques such as DNA barcoding or whole-genome sequencing can provide more comprehensive information and aid in species identification.

By comparing DNA sequences, scientists can uncover genetic variations unique to different species, allowing them to distinguish and classify organisms accurately. This information is valuable in various fields, including taxonomy, conservation biology, forensic science, and evolutionary research.

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Assuming all of the primary oocytes complete the process of oogenesis, then 110 secondary oocytes would be formed.

One secondary oocyte and one polar body are produced during the primary oocyte's first meiotic division (non functional cell). One ovum and one secondary polar body are produced after the fertilised secondary oocyte completes meiosis II. The first oocytes are not split further. They either develop into secondary oocytes or cease to do so. The outermost ovarian layers are where oogenesis occurs. Oogenesis begins with a germ cell that resembles an oogonium and proceeds through mitosis to multiply in number. Before birth, the stages of oogenesis that lead to the creation of primary oocytes take place. Primary oocytes stop dividing at that point. They either degenerate or develop into secondary oocytes.

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Answer:

Using celsius water freezes at 0, and water boils at 100.

Explanation: That is the purpose of the celsius scale to measure between those two points.

Answer:

make sure you read the answer carefully to modify it

Explanation:

Biology is a vast field of science that explores the complexities of living organisms and their interactions with the environment. Within biology, there are numerous fields and professions, each with its own unique set of challenges, opportunities, and contributions to the advancement of knowledge. One field of biology that I find particularly interesting is genetics, and the job that I have chosen to write about is a genetic counselor.

Genetics is the scientific study of genes, heredity, and genetic variation in living organisms. It encompasses a wide range of topics, including the structure and function of genes, genetic inheritance patterns, and the role of genes in disease and evolution. Genetic counselors are healthcare professionals who specialize in the interpretation and communication of genetic information to individuals and families. They work in a variety of settings, including hospitals, clinics, research institutions, and private practice.

The field of genetics has come a long way since the discovery of the structure of DNA in 1953. Today, genetic counselors play a crucial role in the delivery of personalized medicine, as they help patients and their families understand the potential implications of genetic information on their health and wellbeing. They provide information about the risk of inherited diseases and genetic disorders, as well as the benefits and limitations of genetic testing.

To become a genetic counselor, one must complete a master's degree in genetic counseling from an accredited program. This typically involves coursework in genetics, counseling, psychology, and medical ethics, as well as supervised clinical experience. Genetic counselors must also obtain certification from the American Board of Genetic Counseling, which requires passing an exam and meeting continuing education requirements.

In addition to counseling patients and their families, genetic counselors also collaborate with other healthcare professionals, such as physicians, geneticists, and researchers. They may participate in research studies, genetic testing programs, and the development of new therapies and treatments for genetic disorders.

One of the most exciting aspects of genetics is its potential to revolutionize healthcare. As we learn more about the genetic basis of disease, we can develop more targeted and effective treatments, and improve our understanding of how to prevent and manage genetic disorders. Genetic counselors play a critical role in this process, as they help patients navigate the complex and often emotionally charged landscape of genetic testing and diagnosis.

In conclusion, genetics is a fascinating field of biology that has the potential to transform healthcare and improve the lives of millions of people around the world. Genetic counselors are an essential part of this field, as they provide education, support, and guidance to patients and their families, and help bridge the gap between science and society. If you are passionate about genetics and counseling, then a career as a genetic counselor may be the perfect fit for you.

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Answer:

The main biome in Alaska is Tundra.

Explanation:

According to the map the state Alaska's main environment is covered in light blue which in this case indicates the tundra biome. In case you were not aware Alaska is the northwestern most region.

I hope this helps! :D

Answer:

protons

Explanation:

Among the viruses mentioned, Rotavirus is not associated with blood infection.

Rotavirus is primarily known to cause gastroenteritis, which is an infection of the digestive system. It spreads through the fecal-oral route, primarily through contaminated food or water. Rotavirus affects the lining of the small intestine, leading to symptoms like diarrhea, vomiting, and fever, particularly in infants and young children.

On the other hand, HIV (Human Immunodeficiency Virus), Hepatitis C, and Hepatitis B are blood-borne viruses. HIV is primarily transmitted through certain body fluids, including blood, semen, vaginal fluids, and breast milk. It attacks the immune system, leading to acquired immunodeficiency syndrome (AIDS).

Hepatitis C and Hepatitis B are both forms of viral hepatitis that can infect the liver. They are primarily transmitted through blood-to-blood contact, such as sharing contaminated needles, receiving infected blood transfusions, or having unprotected sexual contact with an infected person.

In summary, while Rotavirus causes gastroenteritis, HIV, Hepatitis C, and Hepatitis B are associated with blood infection.

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The most marine organisms are found in Shallow coastal water ( A )

Most Marine Organisms live on coastal habitats even though these habitats are about 7% of the total ocean waters. while the majority of the open ocean waters constitute the habitat for about 50 to 80% of life found on earth.

Most marine organisms live in shallow coastal waters because of the accessibility to sunshine and oxygen while the deep ocean waters are always very dark having little access to sunshine almost throughout the years.

Hence we can conclude that most marine organisms are found in the shallow coastal waters of the ocean.

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Answer:

2 ATP

Explanation:

During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi --> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation. The specific form of glucose used in glycolysis is glucose 6-phosphate.

Decomposers like fungi act as an intermediary. They “unlock” the nutrients held within insoluble, organic compounds and release the resulting soluble nutrients into the soil and water. Plants are then able to take those soluble nutrients up through their roots for their own use.

The organisms that obtain their energy from other organisms are called consumers. All animals are consumers, and they eat other organisms. Fungi and many protists and bacteria are also consumers.