Answers
rRNA genes were employed by Carl Woese to research the evolution of living things. Genes from 16 ribosomal proteins from numerous unidentified microorganism species were used by Jillian Banfield.
What was the finding of Carl Woese?Woese and his postdoctoral fellow George Fox proposed that the "archaebacteria" (now known as Archaea) they had discovered were as unrelated to bacteria as bacteria are to eukaryotes in 1977 publication ,the National Academy of Sciences.
Carl Woese categorized creatures in what ways?Woese identify this "third form of life," comparing the sequences of one specific molecule essential to cellular function, called ribosomal RNA, has since become the norm for identifying and categorizing all species.
Learn more about DNA here:
https://brainly.com/question/264225
#SPJ1
Related Questions
explain four example of cybercrime
Answers
Answer: Hacking.
XSS: Cross-Site Scripting.
Denial-of-Service Attack.
Phishing Scam.
Spamming.
Explanation:
In tomato plants, the production of red fruit color is under the control of an allele RR. Yellow tomatoes are rrrr. The dominant phenotype for fruit shape is under the control of an allele TT, which produces two lobes. Multilobed fruit, the recessive phenotype, have the genotype tttt. Two different crosses are made between parental plants of unknown genotype and phenotype. Use the progeny phenotype ratios to determine the genotypes and phenotypes of each parent.
Cross 1 progency 3/8 two-lobed, red
3/8 two-lobed, yellow
1/8 multilobed, yellow
Cross 2 progency 1/4 two-lobed , red
1/4 two-lobed, yellow
1/4 multirobed red
1/4 multilobed yellow
Answers
Answer and Explanation:
Due to technical problems, you will find the correct answer and complete explanation in the attached file
Which source of energy causes air pollution when buned?
Answers
The combustion of fossil fuels generates carbon dioxide, and methane, among other greenhouse gases that cause pollution. Fossil fuels were formed millions of years ago, from the remains of dead plants and animals. Fossil fuels include oil, coal, and natural gas.
we can conclude that the correct answer is:
Answer: The source of energy causes are fossil fuels.Which is NOT a way that the
respiratory system filters the air
we breathe?
A. cilia
B. mucus
C. saliva
Answers
Answer:
C
Explanation:
Saliva is through the mouth and is too break down food and has nothing to do with the respretory system
Hope this helps!
LIMITED TIME!!!!!! HELP!!!!!!!!
In the Galapagos Islands, species of tortoises have been found on
different islands that cannot interbreed. They came from the same
tortoise ancestor, but over time they became separate species
because they were on different islands. Today there are a total of 9
different Galapagos tortoise species. Which type of isolation is
this?
Select one:
A, episodic isolation
B, geographic isolation
C, temporal isolation
D, behavioral isolation
Answers
Answer: B
Explanation:
The Galapagos tortoises became separate species because they were on different islands. This is an example of geographic isolation, where the separation of physical barriers (in this case, different islands) prevents gene flow and leads to the divergence of populations and the eventual formation of new species
How is the nitrogen cycle important to humans?
A.It produces free nitrogen that humans can breathe.
B.It converts nitrogen into a form that humans can obtain by eating other organisms.
C. It produces nitrogen compounds that humans can breathe.
D. It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
Answers
The nitrogen cycle is important to humans in the following way: it converts nitrogen into a form that humans can obtain by eating other organisms (option B).
What is the nitrogen cycle?Nitrogen cycle is the natural circulation of nitrogen in a series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
During the nitrogen cycle, atmospheric nitrogen is converted to nitrogen oxides by lightning and deposited in the soil by rain, where it is assimilated by plants and either eaten by animals (and returned as faeces) or decomposed back to elemental nitrogen by bacteria.
The usable form of nitrogen that is assimilated by plants becomes accessible to humans when they consume the plants, hence, depicting the importance of the nitrogen cycle.
Learn more about nitrogen cycle at: https://brainly.com/question/1615727
#SPJ1
identify and explain two quality issues for business failure
Answers
Lack of strategy
lack of market management
when did human activity affect a few species and cause them to trophic cascade
Answers
Human activity has caused trophic cascades in several species, with one notable example being the reintroduction of gray wolves to Yellowstone National Park in 1995.
Prior to their reintroduction, the park's ecosystem had suffered due to the absence of wolves, as their absence had allowed the elk population to grow unchecked, resulting in overgrazing of vegetation and a decline in biodiversity.
Once the wolves were reintroduced, they began to prey on the elk, which reduced the elk population and allowed vegetation to recover. As a result, the habitat of other species, such as beavers, songbirds, and even fish, improved, as they were able to utilize the newly regenerated vegetation.
This is a classic example of a trophic cascade, where the removal or addition of one species can have a cascading effect on the rest of the ecosystem.
Human activities such as hunting, deforestation, and pollution have disrupted many ecosystems, causing trophic cascades that can have far-reaching consequences for biodiversity and ecosystem functioning.
Learn more about biodiversity here:
https://brainly.com/question/13073382
#SPJ1
The complete question is:
When did human activity affect a few species and cause them to trophic cascade?
Which statement describes the Mercalli scale?
1 This scale measures seismic waves based on their size.
2 This scale rates an earthquake according to how much damage it causes.
3 This scale produces a single rating for earthquakes that reach the surface.
4 This scale measures the magnitude of an earthquake based on the size of seismic waves.
Answers
Answer:
2- this scale rates an earthquake according to how much damage it causes
Mercalli scale rates an earthquake according to how much damage it causes. So, the correct option is B.
What is Mercalli scale?The Mercalli scale was invented by Giuseppe Mercalli in 1902, is not regarded as a scientific method for measuring the strength of an earthquake.
The Mercalli scale is used in the observations of people who experienced an earthquake to estimate the intensity, which is measured based on the degree of impact or damage to humans, objects, buildings, and other man-made things.
The scale typically measures the intensity of an earthquake using data such as effects on the Earth, the environment and humans that help predict whether an earthquake was fatal.
Thus, Mercalli scale rates an earthquake according to how much damage it causes. So, the correct option is B.
Learn more about Mercalli scale, here:
https://brainly.com/question/16948307
#SPJ6
Which of the following is evidence for the endosymbiosis theory?
Answers
Answer:
Mitochondria and chloroplast contain DNA similar to bacterial DNA
Explanation:
Both mitochondria and chloroplast have their own DNA, which by then was known to contain the hereditary material of organisms. Mitochondrial DNA has a simple circular structure, which is structurally similar to bacteria DNA and is more or less the same size.
Your answer is correct!
Find the mass of an object that has a density of 1.5 cm3 and has a volume of 8 cm3
Answers
A patient has undergone procedures in the dental office to improve his periodontal health. The patient had severe periodontal disease and has shown moderate improvement, although he states his "gums are still bleeding." The patient already has undergone a series of radiographs, a periodontal chart, and intraoral photographs that were taken before the treatment began. What instruments and forms should the dental assistant have ready for the dentist for this patient's next examination? What must the dental assistant do during and after the examination?
Answers
Answer:
A dentist is a health practitioner which specializes in oral health and
treatment plans for individuals.
The instruments and forms the dental assistant should have ready for this
patient’s next examination include:
Briault probe
Cotton forceps
Explorers
Mouth mirror
Periodontal probe
Straight probe
These instruments should be used to check the cause of the bleeding and
administer the right treatment. and is the reason why an examination has
to be conducted.
Explanation:
Wich of the following occurs in all species of living organisms and may lead to an increase in genetic variation?
Answers
Answer:
The answer is Mutation. (Tell me if this is not an answer choice)
is it possible for humans override reflex action think about what happens if you pick up a boiling hot mug of tea explain your answer
Answers
Answer and Explanation:
Through many media sources, it is seen that people can "override" the human reflex action.
The way those people are able to be seemingly unaffected by actions and objects that would normally make others flinch or react is by training themselves to be unaffected. They may still feel pain but won't instantly react to the pain.
For example, everyone will feel pain to a boiling hot mug of tea. For many, when they touch the mug, they will pull their hand/finger away due to the intense heat the mug has. For those who trained to not reflex, they may be able to hold on longer than most others to the mug of tea. Even so, they may still pull away from the mug as it is hurting their hand.
Have a good day!
Help I have been trying to figure this out for hours !
Answers
Assuming that this is asking where transcription (DNA to RNA) occurs, then the answer would be in the nucleus.
what you would do as an anthropologist regarding these customs based on what you have learned about the work of anthropology throughout the semester. Would you work to eliminate these customs because they cause harm to some members of the community? Or, would avoid changing any aspect of these cultures simply because their customs offend our sensibilities?
Answers
Anthropologists investigate the idea of culture and how it relates to people's lives in various historical and geographic contexts. In order to understand our own society better, they research other cultures. For aid in interpreting the present, they research the history.
In what ways does anthropology advance our knowledge of colonialism's effects?In order to fulfil colonial demands, anthropological study also looks at the culture of the colonial endeavour itself, emphasising the establishment of hierarchies and the process of resource exploitation.
The study of every facet of human existence is possible thanks to anthropology. It serves as a portal to the abyss. We may learn about ourselves, our past, present, and future via the study of anthropology. The study of anthropology fosters global interconnectedness.
learn more about Anthropologists refer
https://brainly.com/question/1799013
#SPJ1
What are the ecological relations the takes place in terrestrial ecosystem grassland?
Answers
A terrestrial ecosystem is a population of land-based species and the relationships between biotic and abiotic elements in a specific space. The tundra, taigas, temperate deciduous woods, tropical rainforests, grasslands, and deserts are a few examples of terrestrial ecosystems. A location's temperature range, average annual precipitation, soil type, and amount of light all affect the sort of terrestrial ecosystem that can be found there.
What is an ecosystem?Plants, animals, and other species are biotic factors. Along with rocks, temperature and humidity are abiotic variables.The health of the entire Earth system is determined by ecosystems, which are the basis of the biosphere.Every component of an ecosystem is directly or indirectly dependent upon every other component. An ecosystem's temperature changes frequently have an impact on the types of plants that may flourish there, for example. Animals that rely on plants for food and shelter must evolve with the times, relocate to another ecosystem.Even the Gobi's chilly desert ecosystems are different from Antarctica's icy desert ecosystems. A continent almost entirely composed of barren, Antarctica is covered by a massive ice sheet. This arid ecology supports only a small number of birds, including skuas, and only a few mosses thrive there.To learn more about ecological, refer to:
https://brainly.com/question/842527
#SPJ9
1. Why is the sodium-potassium transport mechanism called a "pump"?
Answers
Answer:
It pumps Na+ (Sodium) into the cell, and it pumps K+ (Potassium) out of the cell.
Explanation:
It uses active transport, which is why it is a pump; pumps use energy in the form of ATP.
It's simply denotes to
entrance of Sodium ion(Na+)Exit of potassium ion (K+)This happens because of density tendency
They use the energy source as ATP or adrenosine tri phosphate
How can disease transmission be traced to the original carrier?
Answers
Answer:An individual capable of transmitting a pathogen without displaying symptoms is referred to as a carrier. A passive carrier is contaminated with the pathogen and can mechanically transmit it to another host; however, a passive carrier is not infected.
Explanation:
This image shows a freshwater stream flowing into an ocean. How does the addition of fresh water affect the salinity of the ocean water?
Answers
The addition of fresh water from a stream reduces the salinity of the ocean water at the point of discharge.
When a freshwater stream flows into the ocean, it brings a lower concentration of salt compared to the seawater. This dilutes the ocean water, reducing its salinity at the point where the freshwater is discharged.
However, the effect on the ocean's overall salinity is usually insignificant as the ocean is a vast body of water with a huge volume and the addition of freshwater is relatively small.
Additionally, the movement of ocean currents disperses the freshwater, reducing the localized effect even further. Nevertheless, significant inputs of freshwater from melting glaciers or heavy rainfall can have a larger impact on the ocean's salinity in the affected regions.
For more such questions on salinity, click on:
https://brainly.com/question/31178324
#SPJ11
Main Steps of the Scientific Method: 1. ________________________________________ 2. ________________________________________ 3. ________________________________________ 4. ________________________________________ 5. ________________________________________ 6. ________________________________________
Answers
The scientific method is a systematic approach used by scientists to investigate and understand the natural world these steps are iterative, meaning that scientists often repeat the process, refining their hypotheses and experiments to gain a deeper understanding of the phenomenon under investigation.
It involves a series of steps that help ensure objectivity, reproducibility, and reliability in scientific research.
The main steps of the scientific method are as follows:
Observation: The first step involves making careful observations of a phenomenon or a problem in the natural world.
Scientists use their senses or instruments to gather data and identify patterns or interesting phenomena.
Question: Based on the observations, scientists formulate a research question that addresses the underlying cause or mechanism of the observed phenomenon.
The question should be specific and testable to guide the subsequent steps.
Hypothesis: In this step, scientists propose a possible explanation or solution to the research question.
The hypothesis is a tentative statement that can be tested through further experimentation or observation.
It should be based on existing knowledge and provide a clear prediction.
Experimentation: Scientists design and conduct experiments to test the hypothesis.
They manipulate variables, control conditions, and collect data to analyze and draw conclusions.
The experiment should be carefully planned, with appropriate controls and statistical methods to ensure accurate and reliable results.
Analysis: After collecting the data, scientists analyze the results using statistical methods or other analytical techniques.
They examine the data to determine if it supports or refutes the hypothesis.
This step involves organizing and interpreting the data to draw meaningful conclusions.
Conclusion: Based on the analysis, scientists draw conclusions about the hypothesis.
If the data supports the hypothesis, it may be accepted as a plausible explanation.
If the data does not support the hypothesis, scientists may revise the hypothesis or propose alternative explanations.
Through this iterative process, scientific knowledge advances and contributes to our understanding of the natural world.
For similar questions on scientific method
https://brainly.com/question/10759582
#SPJ8
Recombination frequencies can be easily calculated by adding the
number of offspring that are different from the parents, then dividing by
the total number of offspring. Let's say you are studying fruit flies and
you cross a wild type, grey female with a vestigial, black male. The F1
offspring are as follows: 650 wild type/grey, 595 vestigial/black, 107
wild type/black, and 91 vestigial/grey. What is the recombination
frequency between the genes for wing type and body color?
Answers
The recombination frequency between the genes for wing type and body color is 0.10.
What is genes?Genes are sections of DNA that contain the instructions for the production of proteins and other molecules that are essential for the functioning of living organisms. Genes are the basic units of heredity, and are passed down from parent to offspring through gametes. They are made up of DNA, which is a long molecule made up of four different building blocks known as nucleotides. Genes are responsible for determining the characteristics and traits of an organism, such as eye color, hair color, and even intelligence. Genes are also responsible for the expression of proteins, which are the molecules that carry out the instructions of the genes.
This is because there are a total of 1,443 offspring and 108 of them are different from the parents (107 wild type/black and 91 vestigial/grey).
The recombination frequency is calculated by taking the number of different offspring (108) and dividing by the total number of offspring (1,443), which gives 0.10.
To learn more about genes
https://brainly.com/question/1282944
#SPJ1
Soda lime absorbs carbon dioxide. Explain why the soda lime is used in this experiment.
Answers
Soda lime is often used in experiments involving respiration because it can effectively absorb carbon dioxide, which is a byproduct of respiration. If the carbon dioxide is not removed, it can build up and interfere with the functioning of the respiring system.
What is soda lime?Soda lime is an effective absorbent for carbon dioxide because it reacts with the gas to form solid substances that can be easily removed from the system. This makes it an ideal tool for removing carbon dioxide in experiments involving respiration.
Soda lime is often used in experiments involving respiration because it can effectively absorb carbon dioxide, which is a byproduct of respiration. During respiration, oxygen is consumed and carbon dioxide is produced as a waste product. If the carbon dioxide is not removed, it can build up and interfere with the functioning of the respiring system.
In an experiment involving respiration, soda lime can be used to absorb the carbon dioxide produced by the respiring system. This helps to maintain the proper balance of gases in the system and allows the experiment to be conducted accurately and efficiently.
Learn more about soda lime, here:
https://brainly.com/question/1366524
#SPJ1
An oil truck accidentally crashes on its way to a gas company. All of the oil spills out and infiltrates the nearby water system. What type of pollution is this an example of?
Answers
hii there,
Answer:
it is an the example of water pollution
Explanation:
Hope it helps you
Mark my answer as brainlist
have a nice day
When combined, two liquids turn into a solid. The mass of liquid i is
1509 and the mass of liquid 2 is 759.
What is the total mass of the new solid substance?
Answers
Answer:no
Explanation:
no
Help pls: As the human population has increased over time, wilderness lands have decreased.
What are the two main reasons that wilderness land has decreased?
Select the two correct answers.
• Pollution has harmed wilderness areas.
• Towns and cities have grown and expanded.
• Human activities have caused the climate to change.
• More land is needed for farming and ranching.
• People no longer need or want wilderness areas.
Answers
Answer:
• Pollution has harmed wilderness areas.
• More land is needed for farming and ranching.
Explanation:
A species of fish evolved over thousands of years to have gills that allowed the fish to swim deep in the sea. What’s the effect of this development on deep-water resources?
The fish developed the gills because of ____. Because the fish are now able to swim in deep water, their ____ in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will ____.
Answers
Answer:
genetic modification competitors increase
Explanation:
The fish developed the gills because of genetic modification. Because the fish are now able to swim in deep water, their competitors in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will increase.
Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream?
O the ability to attract prey by glowing
O extra gills, for oxygen extraction
O the ability to grow larger
O extra fat, for warmth
Answers
Answer:
B-Extra gills, for oxygen extraction
Explanation:
The dark bands seen under the microscope in a skeletal muscle fiber are concentrations of actin protein called l-bands . It is true or false.
Answers
Answer:
it is false
Explanation:
it appears as light bands under microscope
Answer:
false
Explanation:
because dark band seen under the microscope in a skeletal muscle fiber are concentration of actin protein are known as A bands because they are anisotropic when viewed with polarized light
The process Of passing of traits from parents to offspring is known as
Answers
Answer:
The transmission of characteristics from parents to offspring is called heredity.
Explanation:
The traits (such as eye color, hair color, and skin color) are passed in the form of genes (segments of DNA corresponding to particular traits), which are considered the unit of heredity.