Three factors which limit descriptive and comparative investigations are:
The way you must write hypothesesThe number of observations you can makeThe amount of time or money requiredWhat are scientific investigations?Scientific investigation simply refers to a plan or way of making scientific enquires, testing and confirming possible results
So therefore, the amount of time or money required is one of the limitations of scientific research
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Scientists are hopeful that npy can be used in combination with gnrh to treat certain cases of female infertility. Individuals with a deficiency in what receptor system would be most likely to benefit from such a treatment?.
According to the research, individuals with a deficiency in GnRH receptor system would be most likely to benefit from such a treatment.
What is GnRH receptor system?It is follicle-stimulating hormone being the main regulator of reproductive functions, estrogen levels rise during the menstrual cycle until enough estrogen is present to stimulate the release of GnRH and luteinizing hormone.
Progesterone in high concentrations (eg, during the luteal phase of the menstrual cycle or during pregnancy) reduces the response of the pituitary to GnRH.
Therefore, we can conclude that according to the research, individuals with a deficiency in GnRH receptor system would be most likely to benefit from such a treatment.
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An inherited defect in the ability to produce hemoglobin, usually seen in persons of Mediterranean background is: Aplastic anemia Pernicious anemia Sickle cell anemia Thalassemia 15.
An inherited defect in the ability to produce hemoglobin, usually seen in persons of Mediterranean background is thalassemia.
What is anemia and how it causes?Anemia is a condition where there are either too few red blood cells or too little hemoglobin in them.Iron-deficiency anemia, pernicious anemia, aplastic anemia, and hemo- lytic anemia are the three types of anemia.The immune system targeting the stem cells in your bone marrow is the most frequent cause of aplastic anemia. Radiation and chemotherapy treatments are two more variables that might harm bone marrow and alter blood cell formation.Aplastic anemia that runs in the family is transmitted genetically from father to offspring. Compared to acquired aplastic anemia, it is typically diagnosed in childhood and is significantly less frequent.
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The presence of five digits is a plesiomorphic characteristic and is, therefore?
The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates.
What is true about the presence of five digits on hands and feet?The occurrence of the five digits on both the hands and feet i known to be a kind of a primitive mammalian trait, and it is one that can also be seen in majority of primates.
Note that a lot of animals around in the world today are known to only have five digits (in the fingers or toes). The act of having five fingers in in a lot of cases is seen mostly as a recessive trait.
Therefore, The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates is correct.
See full question below
The presence of five digits is a plesiomorphic characteristic and is, therefore:
Group of answer choices
A. a primitive mammalian pattern retained to some degree in most primates
B .the only truly distinctive primate trait
C. characteristic only of apes and humans
D. characteristic only of primates
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A single-cell atlas of non-alcoholic fatty livers identifies regulatory genes that control de novo lipogenesis
A Final statement or concluding statement
It should be noted that not all gut microbiota promote fatty liver disease; some strains act as "probiotics," mitigating the negative effects of other gut microflora.
This is supported by evidence that butyrate, as demonstrated in NAFLD rat models, may be the mechanism by which some bacteria inhibit progression from benign hepatic steatosis to NASH. Changes in the microbiome may thus influence an individual's risk of developing NAFLD, progressing to NASH, or developing the metabolic syndrome.
Hepatic de novo lipogenesis (DNL) is the biochemical process of synthesising fatty acids from acetylCoA subunits produced by a variety of cell pathways, most notably carbohydrate catabolism.
In addition to glucose, which is the most common source of carbon units for DNL, fructose is a profoundly lipogenic substrate that can drive DNL, which is significant given the increased use of fructose in corn syrup as a sweetener.
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Describe the hygiene hypothesis and the role that eosinophils play in it. Why does having a parasitic worm help us
In medicine, the hygiene hypothesis states that early childhood exposure to particular microorganisms (such as the gut flora and helminth parasites) protects against allergic diseases by contributing to the development of the immune system.
What is the role of eosinophils in hygiene hypothesis ?Eosinophils are multifunctional granulocytes that contribute to initiation and modulation of inflammation.
Eosinophils are extremely versatile effector cells that damage tissues or modulate the activity of other immune and stromal cells.Why does having a parasitic worm help us ?This is because parasitic worms have evolved strategies to block parts of the human immune system.
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How can food handlers reduce bacteria to safe levels when prepping veggies for hot holding?
Cooking the food to its right temperature can help food handlers reduce bacteria to safe levels when prepping veggies for hot holding.
Different foods have different temperatures, so to reduce bacteria the food is to be cooked to its required minimum internal temperature. once the food reaches its required temperature, we must try to hold the food at that temperature for a specific amount of time.
Hot food must be kept hot and cold food cold to prevent bacteria from growing. Cold food must be at 41°F or lower and hot food must be 135°F or higher.
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What are the correct molar coefficients for balancing the following chemical reaction?
(NH4)3PO4 +
HCI →
NH4Cl +
H3PO4
The correct molar coefficients will be 1, 3, 3, and 1 respectively.
Balancing chemical equationsA balanced chemical equation is an equation that obeys the law of conservation of atoms.
In other words, the number of atoms of the elements in the reactants must be equal to the number of atoms of the same elements in the products.
Hence in the reaction with the chemical equation: [tex](NH_4)_3PO_4 +HCI --- > NH_4Cl +H_3PO_4[/tex]
The number of atoms of N, H, P, O, and Cl in the reactants must be the same as in the products.
Thus, the balanced equation of the reaction, in this case, will be:
[tex](NH_4)_3PO_4 +3HCI --- > 3NH_4Cl +H_3PO_4[/tex]
Therefore, the correct molar coefficients for balancing the equation are 1, 3, 3, and 1 respectively.
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Think about an academic subject (biology) that inspires you. describe how you have furthered this interest inside and/or outside of the classroom.
Answer:
Biology is the study of Living organisms whereby they are clustered into distribution , origin , behavior , anatomy their physiology and morphology.
Biology as a subject has changed my views and conspiracies about the existence of organisms in their ecosystem .Its like from biology you get to know the meaning of life in details right from the origin to death of the organism .
As a human being I have realized much on how biology helps even beyond the class , since I have learnt the reason why each organism belongs to a certain habitat and specific niche of the ecosystem , I have learnt to respect and conserve such organisms as they deserve to exist in that habitat , and their is an interdependency whether direct or indirect .
Also with the knowledge I have acquired on anatomy and the physiology of organisms , I can do a first aid to an individual who has suffered outdoor pass outs or injuries to reduce the impact of the situation before he or she reaches the hospital .
I believe biology has impacted a very important part of my life and I look forward to take further studies in this field to broaden my knowledge even more .
Select the correct answer. in cellular respiration, where do the high-energy electrons that move through the electron transport chain originate? a. water b. nadh and fadh2 c. nad and fad d. glucose
Answer:
the answer is nadh and fadh
Explanation:
High-energy electrons are released from NADH and FADH2, and they move along electron transport chains, like those used in photosynthesis. The electron transport chains are on the inner membrane of the mitochondrion. As the high-energy electrons are transported along the chains, some of their energy is captured.
Select the correct answer from each drop-down menu. in a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. it was observed that there were more squirrels and fewer raccoons. this situation indicates that . the least amount of energy from the sun will be received by the .
humans,animals and living earth
What are the major mechanisms of epigenetic genome modification?
The major mechanisms of epigenetic genome modification are DNA methylation, histone modifications, and non-coding RNA-associated gene silencing.
DNA methylation is the process in which there is an addition of methyl groups to the DNA molecule. When there is the presence of methyl groups on a gene , it is turned off. Thus, no protein formation takes place from that gene.
Histone modification is the process in which histone proteins, can be modified by the addition or removal of methyl or acetyl groups. DNA is wrapped around histone proteins, and histone proteins can be modified by the addition or removal of methyl or acetyl groups. Due to these modifications. it affects how tightly DNA is wrapped around histones and genes can be turned off and on.
Non -coding RNAs control gene expression by sequence specific interactions with regulatory regions.
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An organism that uses organic carbon for its carbon needs and sunlight for its energy needs would be called a __ quizlet
Autotroph
An organism that uses organic carbon for its carbon needs and sunlight for its energy needs would be called an autotroph.
What are autotrophs?
An organism that has the ability to make its own food from inorganic materials is known as an autotroph. Contrarily, heterotrophs are organisms that are dependent on the eating of other species for their survival because they are unable to manufacture their own nutrients. Because they frequently provide food for heterotrophs, autotrophs are crucial producers in the ecosystem.
The most prevalent kinds of autotrophs are plants, which make their own food through the process of photosynthesis. In order to create nutrition from light, plants contain a specialized organelle called a chloroplast within their cells. These organelles generate glucose, a basic sugar needed for energy, as well as oxygen as a byproduct when combined with water and carbon dioxide. In addition to providing nutrients for the producing plant, glucose also serves as an energy source for the plants' consumers. Algae, plankton, and some varieties of bacteria are additional examples of autotrophs that engage in photosynthesis.
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For the cross in Part B, predict the frequencies of each of the phenotypes in the F1 progeny, and determine the genotype(s) present in each phenotypic class.
The genotype(s) present in each phenotypic class.
yellow round: 3/8, RrYY, RrYy (x2)yellow wrinkled: 3/8, rrYY, rrYy(x2)green round: 1/8, Rryygreen wrinkled: 1/8, rryyGenotype AaBbCc can produce 8 types of gametes, i.e., ABC, Abc, ABc, AbC, abc, aBC, aBc and abC.What is the genotypic ratio of the F1 generation?
Since that component is regarded as dominant, generation F1's genotype ratio of 100 percent Ss hybrid resulted in 100 percent smooth pea production. Mendel was producing the Ss X Ss hybrid by self-fertilizing those F1 individuals.What is the genotype of the green pod plant?
Due to the dominance of green (G) over yellow (g), plants with G in their genotypes produce green pods. The only plants with yellow pods are gg-genotype plants.What is the phenotype of F1 progeny?
Given that one dominant and one recessive allele were transmitted from the parents, the F1 generation exhibits a uniform round yellow phenotype, as predicted by the first law.
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A four-year-old patient exhibits hemorrhagic colitis and is treated via intravenous rehydration. The pathogen is a gram-negative rod. It is isolated and differentiated from related organisms based on its ability to ferment lactose and its inability to ferment sorbitol. Which of the following is a likely diagnosis
The most likely diagnosis of Gastroenteritis based on the presence of organisms which can ferment lactose and its inability to ferment sorbitol is called enterohemorrhagic E. coli.
What is Enterohemorrhagic E. coli?This is referred to a type of pathogen which is a strain of E.coli and causes severe intestinal infection thereby damaging it and leading to bloody diarrhea being observed. Individuals can be infected through food sources such as raw or uncooked meat etc.
This organism mentioned above also has the ability to ferment lactose but not sorbitol and is usually treated using rehydration therapy and requires blood transfusion in sever cases.
This is therefore the reason why Enterohemorrhagic E. coli was chosen as the most appropriate choice.
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Which of the following is not a con of solar power?
Select one:
a.
It contributes to global warming.
b.
It requires expensive technology.
c.
It is not available at night.
d.
It is not available when it is cloudy.
It contributes to global warming is not a con of solar power because this type of power does not produce pollution.
What is the disadvantage of solar power?One of the big disadvantages of solar power is that it requires high initial cost of installation because it is an expensive technology. Requires sunny weather to work best which means that it does not work at night. It has low energy conversion rate. Solar panels are fixed at to one location and we can not move it easily from one place to another.
So we can conclude that It contributes to global warming is not a con of solar power because this type of power does not produce pollution.
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Coalescent theory uses which two values when evaluating diversity of population and attempting to estimate recent history of a population?
Coalescent theory uses Effective population size (Ne) and mutation rate (µ) hen evaluating diversity of population and attempting to estimate recent history of a population.
A genealogy's gene divergence distribution can be modeled using the coalescent. It is frequently used to calculate population genetic characteristics in natural populations, including population size, migration rates, and recombination rates.Every finite set of genes or alleles has a "coalescent point" where all descendants converge to a single ancestor (i.e., they "coalesce") under the conditions of genetic drift alone.To measure population genetic diversity, it is frequently utilized. characteristics including the size of the population, migration patterns, and Rates of recombination in unmanipulated populationsIt was first created by as the "n-coalescent" Kingman (1982). Others call it the "Kingman." "the coalescent," or simply "the coalescent".learn more about Coalescent theory here: https://brainly.com/question/9640986
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________ is a postexercise snack that has been shows to increase muscle glycogen stores and protein synthesis. a. Cheese b. Almonds c. Chocolate milk d. Bananas e. Whole-grain tortillas
The correct answer is Option c (Chocolate milk).
What is a good post-workout snack?When you work out, your muscles use their glycogen energy stores. Some of the muscle proteins also get damaged, especially during strength workouts. Therefore, after workout it is important to consume protein in combination with moderate carbohydrate.A diet rich in carbohydrates increases endurance performance because of the extra store of carbohydrates in the muscles and liver, called glycogen.Chocolate milk has everything you need after a workout—carbs, protein, fluids and electrolytes. Low-fat chocolate milk contains a combination of carbohydrates and protein which is just right for refueling weary muscles.Cottage cheese is an excellent source of both whey protein and casein protein which replenish muscles.Almonds provide protein, fiber and healthy fats.Bananas reduce inflammation and replenish muscle glycogen stores, ultimately promoting quicker recovery.Whole-grain tortillas provide fiber and protein.Learn more about post-exercise snacks here:
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What type of chromosomal abnormality can lead to multiple copies of a gene, some of which can incur mutations that can lead to the evolution of a new function?
A trisomy is a chromosomal condition characterized by an additional chromosome. A person with a trisomy has 47 chromosomes instead of 46.
Trisomy means the presence of an extra chromosome in some or all of the body's cells. This results in a total of three copies of that chromosome instead of the normal two copies. For example, Down syndrome (trisomy 21) is caused by having three copies of chromosome 21 instead of the usual two copies.
This genetic condition is the result of a genetic mutation where your cells don't divide as they should. You can't prevent this abnormality from happening during cell division.
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Holding your breath while ascending can lead to: Select one: A rupture of the tiny air sacks in the lungs, known as alveoli. A lung overpressure (overexpansion) injury. Arterial gas embolism (AGE). All of the above.
Holding your breath while ascending can lead to all of the above options.
Surfacing excessively fast or holding the breathing while swimming to the surface can make the air in the lungs expand which is known as pneumonic barotrauma. This might break lung tissue, which can prompt gas bubbles to be delivered into the blood vessel dissemination (arterial gas embolism).
The air in the lungs becomes risky when an individual ascends. On the off chance that somebody holds their breath while rising to the surface, the lungs and the air inside them extend as the water pressure decreases. Since that air has no place to escape, it continues to expand against the walls of the lungs, no matter what the organ's capacity.
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Which biomolecules are responsible for the brilliant coloring of anoxygenic phototrophs (e.g., some are bright orange, pink, or red)
carotenoids biomolecules are responsible for colouring anoxygenic autotrophs.
what are autotrophs ?
A primary producer, also referred as an autotroph, is an organism that uses energy from light or inorganic chemical reactions to create complex organic compounds from simple ones.
what do you mean by anoxygenic ?
anoxygenic means, when photosynthetic takes place without oxygen.
what are biomolecules ?
A chemical substance that is present in life forms is termed as biomolecule. The building blocks of life, biomolecules play critical role in all life forms.
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If you classify individuals by type of cerebral palsy, this variable would be considered.
Cerebral Palsy is often classified by severity level as mild, moderate, severe, or no CP.
What is cerebral palsy?A series of conditions known as cerebral palsy (CP) have an impact on a person's mobility, balance, and posture. The most typical motor impairment in children is cerebral palsy. Cerebral refers to something involving the brain. Palsy refers to muscle weakness or functional issues.
Main cause:Typically, a condition that interferes with a developing baby's brain in the womb results in cerebral palsy. These include periventricular leukomalacia, which is damage to the white matter of the brain, possibly as a result of a decreased blood or oxygen supply (PVL)Life expectancy of a person with cerebral palsy ranges from 30 years to 70 years.
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The image below shows the distribution of members of a population. What type of distribution is shown?
A) Uniform
B) Clumped
C) Random
D) Irregular
The population distribution shown in the image is uniform.
What is uniform distribution?A population is said to be uniformly distributed when members of the population are uniformly distributed over the total area available for the population.
In the image, individuals in the population are more or less at an equal distance from one another and cover the entire area available to the population.
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(a) The following account was written by a confused student.
Rewrite the paragraphs with the mistakes corrected:
"Shortly after a heavy meal, glucose is absorbed from the large
intestine, and its concentration in the blood cells goes up.
This rise is detected by the liver, which releases the hormone
insulin into the blood. Insulin makes the pancreas remove the
extra glucose from the blood and store it as starch.
Later on, the concentration of glucose in the blood drops. The
liver breaks down fat so that it goes up again.
(6 marks) (6 words need changing!)
(b) Explain why, some time after the meal, the blood glucose
concentration falls below its correct level.
(2 marks)
Answer: Shortly after a heavy meal, the glucose levels increase. This rise is detected by the liver, which releases the hormoneinsulin into the blood. Then cells in the pancreas release insulin, causing the body to absorb glucose from the blood and lowering the blood sugar level to normal.
Explanation:
What is the subunit composition of bacterial rna polymerase holoenzyme? what are the functional roles of the different subunits?
RNA polymerase holoenzyme sub-units includes α (two copies), β, β' and ω sub-units. which is sigma factor plus the core enzyme ,composed of five sub-units-a2BB'w.
The sub-unit of bacterial RNA polymerase has implicated in all steps of transcription initiation, which includes promoter recognition and opening, priming of RNA synthesis. RNA polymerase is essential units of life which is found in all living organisms as well as many viruses.
The role of sigma factor is to recognize the promoter sequence. Holoenzyme is consist of RNA synthesis from sigma 70 specific bacterial and phage promoters.RNA polymerase ,principle factor for initiation of transcription in bacteria , the sigma sub-unit of RNA polymerase to form holoenzyme capable of promoter recognition.
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Which number identifies the system that serves as the site of nutrient and waste exchange between cells and the interstitial fluid?
The site for exchange nutrients and waste in capillaries.
Exchange of Gases, Nutrients, and Waste Between Blood and Tissue by diffusion Occurs in the Capillaries. Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of certain elements between your blood and tissues.
Plasma and interstitial fluid are very similar because water, ions, and small solutes are continuously exchanged between them across the walls of capillaries, through pores and capillary clefts.
Capillary walls contain small pores that allow certain substances to pass into and out of the blood vessel.
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Tons of biodegradable soild waste are produced each day in cities suggest some ways to change waste into energy.
Explanation:
l if you produce by the graduable waste you can send it for recycling into composed you can delete by the industrial scale by composting and idhar composting and array big digestion a d composting is more suitable for 5 days material 8 is more suitable for which basis and sliding is
We used the enzyme, taq polymerase, which is derived from the thermus aquaticus bacterium, in our pcr procedure. Why is this enzyme important for efficiency in pcr?.
The use of a thermophilic DNA polymerase such as Taq polymerase prevents the denaturation of the enzyme during the heating that is important to separate the newly synthesized strand. So using this enzyme simplifies the PCR technique and increases its efficiency.
Taq DNA polymerase is highly efficient, when it reaches the optimum temperature, it becomes fully functional. It also has a half-life of over two hours (at 92°C), high amplification capacity, and it can add upto 150 nucleotides per second. It is "special" enzyme because it comes from the bacterium Thermus aquaticus, which lives in hot springs. It is therefore thermostable even at high temperatures, while other polymerases (e.g. E. coli) are not.
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Non-primates have fewer digits (i.e. fingers and toes) compared to primates in order to:______.
a. climb more efficiently.
b. manipulate objects.
c. run faster.
d. have a finer sense of touch.
c. run faster is the correct option
Primates have large brains and dexterous limbs. Non-primates have small brains and inflexible limbs. The main differences between primates and non-primates are the size of the brain and the flexibility of the limbs.
Humans are primates and are a diverse group containing about 200 species. Monkeys, lemurs, and apes are our cousins, and we have all evolved from a common ancestor over the last 60 million years.
Primates: Humans, apes, monkeys, chimpanzees, gorillas, baboons, and orangutans are examples of primates.
Non-primates: Birds, reptiles, amphibians, and some mammals are not primates.
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Most gastric ulcers are caused by _____________.
a. excessive mental stress
b. overuse of aspirin and /or ibuprofen
c. overconsumption of alcohol
d. bacteria
Most of the gastric ulcers are caused by bacteria.
A sore when forms on the oesophageal, stomach, or small intestine lining. When stomach acid affects the lining of the digestive tract, ulcers develop. It is referred into three distinct ulcers-
An ulcer on the lining of the stomach or the first section of small intestine is referred to as a peptic ulcer.A gastric ulcer is referred to as such if it develops in stomach. Duodenal ulcers are those that occur in the duodenum.The causative agents of ulcer-
The majority of ulcers are brought on by an infection with the bacteria or germ H. pylori. The mucus that covers the lining of your stomach and the first portion of your small intestine is damaged by this bacteria (the duodenum)Another major reason are NSAIDs (non-steroidal anti-inflammatory drugs). These include over-the-counter painkillers and antipyretics such aspirin, ibuprofen, and naproxenLifestyle factors such as stress and alcohol consumptionThe answer to the most causative factor for gastric ulcer is d) bacteria.
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Which of the following statements is correct with respect to the use of oxidized sulfate by some bacterial groups
All of the above.
What are sulfur oxidizing bacteria?Any of a wide range of microorganisms that can metabolize sulfur and its components and are significant in nature's sulfur cycle are known as sulfur bacteria. Hydrogen sulfide (H2S), sulfur, and thiosulfate are a few of the typical sulfur compounds that are used by these bacteria as a source of energy. Sulfate is the end result of the oxidation of sulfur.
In deep earth deposits, Thiobacillus, which is common in both marine and terrestrial settings, produces sulfuric acid, which dissolves metals in mines but also corrodes concrete and steel. It also oxidizes sulfur, generating sulfates that are helpful to plants.
I understand the question you are looking for is this:
In seawater, sulfate is the most common anion after chloride. Which of the following is correct with respect to the use of sulfate by some bacterial groups?
Oxidized sulfur-containing molecules have redox potentials lower than those of the nitrogen series.Oxidized sulfur molecules such as sulfate and sulfite serve as electron acceptors.Sulfate and sulfite can receive electrons from hydrocarbons.Sulfate-reducing archaea and bacteria are widespread in the ocean.All of the above.Learn more about sulfur bacteria here:
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