Carl Woese compared r rna sequences to generate the tree of life, establishing the three-domain system.
Three Domain System is a biological classification brought by Carl Woese in 1977 that splits cellular life forms into archaea, bacteria, and eukaryote domains.Archaea is Otherwise known as archaebacteria, contains unicellular prokaryotic organisms that lives in harsh climates. Ancient Do not contain peptidoglycan in cell wall.Bacteria is Otherwise known as bacterium, contains unicellular, prokaryotic organisms which Includes common bacteria and those that cause disease and Contains peptidoglycan in cell wall.Eukaryote Includes animals, plants, fungi, and protists.Basis of Three Domain System is the Sequence of nucleic acids in RNA (makes up ribosomes - produce proteins)To know more about Three Domain System visit : https://brainly.com/question/26344149
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which statement does not describe an antibiotic mechanism of action, thus enabling the antibiotic to kill bacteria?
Answer:
They prevent the formation of the phospholipid bilayer
Explanation:
The statement from above which does not describe an antibiotic mechanism of action, thus enabling the antibiotic to kill bacteria is:
It prevent the formation of phospholipid bilayer.
The correct answer choice is option a
Generally, antibiotics are usually administered and prescribed by healthcare professionals for health conditions caused by bacteria.
BacteriaBacteria are microscopic and unicellular organisms which belong to the group of organisms known as Monerans.
They can found on air, in water, in the soil and also even inside living organisms.
However, bacteria are also the causative agents or pathogenic microorganisms of some diseases.
Also, antibiotics are usually administered and prescribed by healthcare professionals for health conditions caused by bacteria.
Some few characteristics of bacteria are:
They are unicellular organismsThey are microscopicThey are either saprophytes or parasitesThey exhibit as- e- x - ual reproductionComplete question:Which statement does not describe an antibiotic mechanism of action, thus enabling the antibiotic to kill bacteria?
a. It prevent the formation of phospholipid bilayer
b. Inhibition of Cell Wall Synthesis.
c. Alteration of Cell Membranes.
d. Inhibition of Nucleic Acid Synthesis
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HELPPPPP ME WITH THIS PLEASE!!!
all genetic characteristics are not inherited. how can this be explained?
When it comes to different strains of hantavirus, which one is of LEAST concern to humans?
A.
Hantaan
B.
Puumala
C.
Prospect Hill
D.
Sin Nombre
Answer: C, Prospect Hill.
Explanation: it's in the notes that this strain has no evidence of infecting humans.
Prospect Hill is the strain of hantavirus that is of least concern to humans. Therefore, option (C) is correct.
What is hantavirus?Hantavirus is a group of viruses that primarily infect rodents and can cause severe illness in humans. These viruses are transmitted to humans through contact with infected rodents, their droppings, urine, or saliva, or by inhaling dust contaminated with the virus. Hantavirus infections can lead to a range of symptoms, including fever, muscle aches, fatigue, and respiratory distress.
In some cases, the infection can progress to a severe and potentially fatal respiratory illness known as hantavirus pulmonary syndrome (HPS). Hantavirus infections are most commonly reported in rural areas, particularly in regions with high rodent populations. Prevention measures include avoiding contact with rodents, sealing up rodent entry points, practicing proper sanitation and hygiene, and taking precautions when cleaning up rodent-infested areas.
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what are 5 resources valued by human society?
Answer:
Water, Oil, Coal, Forests, Iron
Explanation:
hope this helps
Answer:
Water, Oil, Coal, Forests
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This photo shows a child receiving an oral vaccine against polio, a disease caused by a virus that infects neurons. Given that the body cannot readily replace most neurons, why is it important that a polio vaccine stimulate not only a cellmediated response but also a humoral response?
PolioPolio vaccine produces antibody in the blood called humoral responses ,it prevents to spread polio virus to the immune system.
What is the difference between OPV and IPV vaccine?OPV is administered orally, giving defence in the mouth , intestine and blood. Because polio viruses spread through the mouth and thrive in the intestines , it's crucial to protect both of these areas. An injectable vaccine called IPV offers protection in the blood.
The action of oral polio vaccine is two pronged. OPV antibodies in the blood to all three types of polio virus andand in the event of Infection,this protects the individual against polio paralysis by preventing the spread of polio virus to the nervous system.
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Which two functional groups are always found in amino acids? a) carbonyl and amino groups b) carboxyl and amino groups c) amino and sulfhydryl groups d) hydroxyl and carboxyl groups
The two functional groups which are always found in amino acids are carboxyl and amino groups and is denoted as option B.
What are Amino acids?These are substances which are derived from protein is broken down through series of enzymatic actions and are the building blocks of life as they are responsible for the growth and repair of worn out tissues.
They contain elements such as nitrogen, carbon, hydrogen etc and their structure is made up of a basic amino group (―NH2) and an acidic carboxyl group (―COOH).
This is therefore the reason why option B was chosen as the most appropriate choice.
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what technological advancement was necessary before scientists could begin to observe cells? a. invention of the microscope b. invention of the balanc
The invention of the microscope was required before researchers could start studying cells.
The correct answer is A.
Who made the microscope?Zacharias Janssen
The usage of a microscope, a discovery that dates back to the late 16th century and a modest Dutch eyeglass manufacturer named Zacharias Janssen, has helped every major branch of science. One classification is based on the element that interacts with the material to produce the image, such as light or photons (for optical microscopes), electrons (for electron microscopes), or a probe (scanning probe microscopes).
Which two basic types of microscopes are there?There are two different kinds of microscopes: Simple and compound microscopes both consist of lenses, with a simple microscope having a single lens and a compound microscope having multiple lenses.
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which one of the following statements concerning cardiac muscle cells is true? they are multinuclear cells. they require an external stimulus to undergo contraction they possess numerous caveolae. they are spindle shaped. they are joined together end-to-end by intercalated disks
The statements concerning cardiac muscle cells which is true- they are joined together end-to-end by intercalated disks.
cardiac muscle cells are the involuntary and striated muscles that are present in the wall of the heart.
The myocardium is divided into endocardium (the inner layer) and pericardium (outer layer)
They are unicellular muscles with which are joined together by the intercalated disc and are encased by collagen fibres which forms the extracellular matrix.
They don't need an external stimuli and keep working so that the pumping of the heart is not stopped. The stimuli started from the sino atrial node which gets transmitted to the all over the heart muscles.
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Dominant groups tend to use negative stereotypes of minorities when the minorities appear to be?
Dominant groups tend to use negative stereotypes of minorities when the minorities appear to be threatening.
What are stereotypes?The term stereotypes are awkward ideas that are targeted at a particular group of people. These stereotypes may not actually be a reflection of the situation of the person against whom the stereotypes are peddled.
The minority groups in several countries are the victims of these stereotypes. Hence, dominant groups tend to use negative stereotypes of minorities when the minorities appear to be threatening.
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Resistance in strength training is the equivalent of _____ in cardiorespiratory exercise.
Answer:duration
Explanation:
The resistance in strength training is the equivalent of intensity in cardiorespiratory exercise. These are metabolic equivalents used to measure the fitness of an individual.
What are Cardiorespiratory exercise?Cardiorespiratory fitness (CRF) is the ability of the circulatory and respiratory systems of an individual to supply oxygen to skeletal muscles during vigorous physical activity. The primary measure of the CRF is VO₂ max.
Activities like walking, jogging, running, cycling, swimming, climbing, hiking, skiing, and dancing are some of the pure cardiorespiratory exercises. Sports such as soccer, basketball, squash and tennis helps an individual to improve his/her cardiovascular fitness.
Metabolic equivalents (METs) are the rates used to measure the intensity of an exercise and the uptake of oxygen. MET measures the energy expenditure at rest.
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ASAP Please please Help
1.The rate of photosynthesis can be measured as the volume of oxygen released by a
plant per minute. The number of bubbles of gas released per minute from waterweed is
counted.
a.The gas collected in this experiment is not pure oxygen. Suggest a reason for this.
Answer:
photosynthisis is the rate of reaction of the chloroplasts in the plant. the oxygen is collected from the plant and transformed to oxygen
Explanation:
hope this helps
Photosynthisis is the rate of reaction of the chloroplasts in the plant. the oxygen is collected from the plant and transformed to oxygen.
What happens during cellular function?One of the cellular functions is making food/creating energy. Plant cells do this the best as they have chloroplasts that can turn sunlight, water, and carbon dioxide into glucose and oxygen via photosynthesis.
The relationship between the structures found in cells and functions carried out by cells related to protein formation and transport or the capture, storage, and usage of energy is known as golgi body appratus.
This glucose is then turned into usable energy when it has transported to the mitochondria where it has been turned with oxygen into carbon dioxide and ATP via cellular respiration. The ATP is taken around the cell and distributed to where it is needed via the Golgi apparatus.
Therefore, One of the cellular functions is making food/creating energy. Plant cells do this the best as they have chloroplasts. Photosynthisis is the rate of reaction of the chloroplasts in the plant. the oxygen is collected from the plant and transformed to oxygen.
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novel mechanism for regulation of epidermal growth factor receptor endocytosis revealed by protein kinase a inhibition
The novel mechanisms for the regulation of epidermal growth factor receptor endocytosis are revealed by protein kinase A inhibition. So this is a correct statement.
What is EGFR?The receptor tyrosine kinases known as the ERBB family, which includes the epidermal growth factor receptor (EGFR), play crucial roles in both healthy physiological states and malignant situations.
The extracellular and intracellular domains of the receptor tyrosine kinases undergo dynamic conformational changes when they contact their ligands, which causes the transphosphorylation of tyrosine residues in the C-terminal regulatory domain.
These act as docking sites for molecules that come after them and cause metastasis, invasion, proliferation, and the avoidance of apoptosis, all of which are crucial for the cancer phenotype.
Therefore, the statement is correct.
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During the redox reaction in glycolysis (step 6 in Figure 9.9), which molecule acts as the oxidizing agent? The reducing agent?
How do the Riffles affect the level of oxygen in a River?
(Please help!!)
The goal of a command economy is to
Explanation:
it is to supply enough food, housing and other basics to meet the needs of everyone in the country
A physical model is often used to show the complex structures that exist in
many cells. Which sentence best describes a benefit of using a model of a
cell?
The best phrase that describes a benefit of using a one-cell model is Integrating heterogeneous datasets and Identifying limits of our knowledge.
What is a model cell?The model cell is a testing center where people can experiment with ideas, embrace failure as a path for learning, and put new concepts into action
3D cell models provide more physiologically relevant conditions than 2D cell cultures, as they closely mimic the microenvironments, cell-to-cell interactions and biological processes that occur in vivo.
With this information, we can conclude that Since they account for individual behavior at the cell level such as cell proliferation, cell migration or apoptosis, cell-based models are a useful tool to study the influence of these behaviors on how tissues are organised in time and space.
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What is the biological roles of human?
Glucose is a carbohydrate formed by using energy to convert carbon dioxide and water bonded glucose molecules. What type of reaction does this represent?.
Glucose is a carbohydrate formed by using energy from the sun to convert carbon dioxide and water into glucose molecules through a reaction called photosynthesis.
Photosynthesis is the process by which plants use carbon dioxide, water, and energy from the sun to convert it into oxygen and sugar molecules called glucose. Plants use their organelles called chloroplasts to store energy from the sun. Chloroplasts have thylakoid membranes that possess a pigment known as chlorophyll. Chlorophyll is responsible for giving green color to plants.
Photosynthesis can be divided into light-dependent and light-independent reactions. Light-dependent reactions take place in the stroma, the space between thylakoid membranes and chloroplast. It uses light energy from the sun to convert into chemical energy in the form of ATP and NADPH. ATP and NADPH provide energy to assemble sugar molecules, synthesized by photosynthesis, called glucose.
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which molecules are considered organic?
those containing hydrogen
those containing carbon
all natural
those containing phosphorus
According to the research, the correct option is those containing carbon. Molecules are considered organic when they contain carbon.
What are organic molecules?It refers to those that come from living beings, that is, they are compounds of biological origin, which contain carbon, proteins, lipids, carbohydrates are organic molecules.
In this sense, they are compounds with carbon-hydrogen, carbon-carbon or other covalent bonds since the formation of covalent bonds is easy for carbon, which achieves its stability by creating bonds with other carbons in closed or open chains.
Therefore, we can conclude that according to the research, the correct option is those containing carbon. Molecules are considered organic when they contain carbon.
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during strenuous exercise, when muscles are not being supplied with enough oxygen, a shift in metabolism results in the breakdown of pyruvic acid to lactic acid. what is this change in metabolism called?
The Change is called ATP. For muscle to contract, ATP must be present in muscle fibers. ATP is offered from the subsequent sources:
inside the muscle fiber. ATP available in muscle fibers can sustain muscular contraction for several seconds. phosphocreatine. creatine phosphoric acid, a high-energy molecule stored in muscle cells, transfers its high-energy phosphate group to ADP to create ATP. creatine phosphoric acid in muscle cells can generate enough ATP to sustain shortening for about 15 seconds. Glucose stored in cells. Intracellular glucose is stored in carbohydrate glycogen. Through the organic process of glycogenolysis, glycogen is weakened to release glucose. metastasis then produces ATP from glucose. Glucose and fatty acids extracted from the bloodstream. When energy demand is high, glucose from glycogen stores within the liver and fatty acids from adipocytes and fat stores in the liver are released into the bloodstream. Glucose and fatty acids are haunted by muscle cells from the bloodstream. metastasis produces ATP from these high-energy molecules. internal respiration is that the process by which ATP is extracted from high-energy molecules. Several important metabolic pathways are involved, a number of which require the presence of oxygen. the most methods are summarized as follows.
Glycolysis breaks down glucose into pyruvate and produces two molecules of ATP within the absence of oxygen. the assembly of ATP without oxygen is termed anaerobic respiration, and glycolysis is named an anaerobic process because oxygen isn't employed in the varied metabolic steps of this pathway. During anaerobic respiration, pyruvate is converted to lactate. carboxylic acid is converted (via liver enzymes) to pyruvate, and within the presence of oxygen pyruvate can enter the mitochondria
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Which statement gives an advantage of multicellular organisms?
Answer:
Cells are able to provide support
Explanation:
There are multiple cells in these organism, so these cells help carry out multiple functions.
Shaniqua is a holistic veterinarian who specializes in phytotherapy. She is speaking before a class of veterinary students, discussing the efficacy of using herbs and plants to promote animal wellness. One student asks Shaniqua why she believes that herbal remedies are superior to traditional medications, given that many medications are derived from plants. How will Shaniqua MOST likely reason with this student? A. She will say that the pharmaceutical manufacturers are dishonest about their use of plants in medicines. B. She might note that there are more studies done on the use of herbal remedies than there are of prescription medications. C. She will explain that companies supplying herbal remedies have better motives than pharmaceutical companies. D. She might say that using a whole herb instead of just a component of it is thought to cut down on unintended side effects.
She might note that there are more studies done on the use of herbal remedies than there are of prescription medications.
Define herbal remedies.Products made from plants known as botanicals or herbs are known as herbal goods, botanical products, or phytomedicines and are used to treat ailments or maintain health. A product manufactured from plants called a herbal supplement is only meant to be consumed internally.
Although they are FDA-regulated and only contain pure chemicals, many prescription pharmaceuticals and over-the-counter drugs are also made from plant components. Herbal supplements may contain whole plants or plant parts.
Herbal supplements are available in a variety of forms, including dried, chopped, powdered, liquid, capsules, and more.
swallowed as tinctures, tablets, or powdermade into teaApplying gels, lotions, or creams to the skinin the bath waterto know more about herbal check the link given below
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Scientists are attempting to identify the specific type of leukemia a person has based on cell surface structures.
The statement 'Scientists are attempting to identify the specific type of leukemia a person has based on cell surface structures' is based on scanning electron microscope.
What is scanning electron microscope?The scanning electron microscope is an especial class of optical procedure to identify cellular structures by using an electron flow beam.
This technique is very useful for analyzing micronanoparticles images in different types of solid materials.
In conclusion, the statement 'Scientists are attempting to identify the specific type of leukemia a person has based on cell surface structures' is based on scanning electron microscope.
Complete question:
Choose the microscopy technique that's could best for the needs of each scenario.
Scientists are attempting to identify the specific type of leukemia a person has based on cell surface structures.
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What anatomical term would you use to refer to the positioning of body parts in relation to the midsagittal plane?
The anatomical term used to refer to the positioning of body parts in relation to the midsagittal plane is Medial and/or lateral.
What is the medial and lateral plane?In anatomy, the medial and lateral planes make reference to toward midline and away from midline of the human body, respectively, in regard to the midsagittal plane.
In conclusion, the anatomical term used to refer to the positioning of body parts in relation to the midsagittal plane is Medial and/or lateral.
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Which pharmacokinetic process is affected when medications are given to a patient who has a history of gastric bypass surgery?
The name of the pharmacokinetic (i.e., the PK) process affected when medications are given to a patient who has a history of gastric bypass surgery is known as absorption.
What are pharmacokinetic properties?The pharmacokinetic properties can de be defined as the physical-chemical properties of compounds in a given solution, which are fundamental during drug development and formulation selection processes in therapeutics.
In conclusion, the name of the pharmacokinetic (i.e., the PK) process affected when medications are given to a patient who has a history of gastric bypass surgery is known as absorption.
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What is the activity that occurs during the movement of the plates under a volcano. 15 paragraphs pls.
The activities that occur during the movement of the plates under a volcano is the melting of the mantle which rises through the plate.
What is a Volcano?This is referred to as an opening which is present the earth's crust through and is characterized by the escape of substances such as lava, gases etc through it.
Volcanoes have plates which are found under it and experience varying degree of movement as a result of the increase in the temperature and pressure around it.
This leads to the melting of the mantle which is found in the earth crust which then rises through the plate.
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What signs and symptoms does the nurse expect a client diagnosed with bacterial pneumonia to exhibit?
The most common signs and the symptoms does the nurse expect to a client who diagnosed with bacterial pneumonia is to exhibit cough with thick yellow, the green, or the blood-tinged mucus. the stabbing chest pain that worsens when they coughing or they breathing. sudden onset of the chills severe enough to make that you shake. fever of around 102-105°F or above (fever lower than 102°F )
The Most of the people with pneumonia respond well to the treatment, but the pneumonia can be very serious and they even deadly. You are more likely to have the complications if you are an older adult, a very young child, or have a weakened immune system, or have a serious medical problem like diabetes or the cirrhosis.
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fill in the blank question. the splitting or diverging of a population into two or more is known as cladogenesis.
the splitting or diverging of a population into two or more species is known as cladogenesis.
What does cladogenesis mean?Cladogenesis is an evolutionary phenomenon that results from the divergence of taxa brought about by strong selection for the adjustment of sister populations from a common origin to different environments as a result of their isolation from each other on anatomical, physical properties, geographic, seasonal, ecological, and/or ethological (behavioural) levels.
A new animal or plant species is developed through speciation. When a group within a species splits from those other individuals of its family and develops its own distinct features, this is known as speciation.
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why is nutrient cycling important to an ecosystem
Which term describes the distribution of charges in a water molecule?
O organic
O polar
O even
O negative
Answer: I thonk polar
Explanation:
me is big BRAIN