Heat controls microbial growth is done by the process of conjugation. Heat is a popular and powerful tool for preventing the development of microorganisms. The correct option is conjugation.
What is Conjugation methods-
Conjugation methods are frequently utilized in laboratory aseptic techniques. However, because conjugation penetrates cells more effectively than dry heat, it is often the more successful treatment.
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which condition or factor for coronary artery disease (cad) suggests a greater genetic contribution than environmental contribution to its development? quizleet
Beginning to be understood are the genetic components that underlie the significance of inheritance in atherosclerosis.
A number of risk variables, including plasma lipoprotein levels, inflammation, and vascular calcification, have been found to be modulated by genetic variation, such as mutations or common polymorphisms.Risk factors for CAD include obesity, inactivity, poor diet, and tobacco use. Your chance of developing CAD is also increased by a family history of the condition, particularly if the condition was present at a young age (50 or younger)Important genetic roots of coronary artery disease (CAD) are compared to environmental influences in terms of importance. On the basis of family and twin studies, a method that produces high-quality data, the heritability of CAD has been estimated to be between 40% and 60%.To know more about atherosclerosis
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specific gravity indicates: a) the amount of blood in the urine b) the amount of water in the urine c) the amount of dissolved substances in the urine d) the amount of acid in the urine
Specific gravity indicates the amount of dissolved substances in the urine.
What is urine?As it travels through the nephrons and down the renal tubules of the kidney, urea, along with water and other waste products, creates the urine. both ureters. From the kidneys to the bladder, urine travels through these tiny tubes. The excretory organs remove some additional, frequently poisonous compounds from the circulatory fluids and expel them from the body through urine, which is a liquid or semisolid solution of metabolic wastes. Urine often reflects an organism's needs for water in terms of composition.
What is specific gravity?The difference between an object's density and that of a standard substance is its specific gravity. Depending on its value, the specific gravity might indicate whether an object will float or sink in our reference substance. A laboratory test called urine specific gravity reveals the concentration of all chemical particles in the urine.
Thus from above conclusion we can say that specific gravity indicates the amount of dissolved substances in the urine.
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you have discovered an organism that lives inside the gastrointestinal tract and does not contain a nucleus. based on what you know of cellular respiration, how does it obtain its energy?
an organism that lives inside the gastrointestinal tract and does not contain a nucleus. Based on cellular respiration, it obtains its energy through glycolysis.
Glycolysis is a series of reactions that converts glucose into two molecules of pyruvate, each with three carbons. Glycolysis is a metabolic pathway that has been around for a very long time and is used by the great majority of living things on the earth today.
In living things, the process of cellular respiration begins with glycolysis. However, since glycolysis doesn't require oxygen, a lot of anaerobic organisms—organisms that don't use oxygen—also have this pathway.
The complete question is:
You have discovered an organism that lives inside the gastrointestinal tract and does not contain a nucleus. Based on what you know of cellular respiration, how does it obtain its energy?
a. glycolysis and the citric acid cycle
b. photosynthesis and the citric acid cycle
c. glycolysis
d. photosynthesis
e. glycolysis, the citric acid cycle, and the electron transport chain
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the aortic semilunar valve question 7 options: is the location of the pacemaker cells of a normal heart. prevents blood flow from the right ventricle to the right atrium. prevents blood flow from the left ventricle to the left atrium. prevents blood flow from the pulmonary artery to the right ventricle. prevents blood flow from the aorta to the left ventricle.
The pulmonary artery and right ventricle, as well as the aorta and left ventricle, are connected by semilunar valves. These valves permit blood to flow forward into the arteries but stop blood from flowing backward into the ventricles.
The aortic valve aids in maintaining proper blood flow through the heart. Blood flow to the body and the rest of the heart might be impacted by an unhealthy or damaged aortic valve.
Tricuspid valve refers to the valve on the right side of the heart that separates the upper (right atrium) and lower chambers (right ventricle).
The largest blood vessel in your body is the aorta. It transfers your heart's oxygenated blood to the rest of your body.
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Certain reactions in cells are endergonic. How do cells make those reactions proceed?.
In sickle cell anemia, the defective hemoglobin differs from the normal hemoglobin by?.
Hemoglobin S, an aberrant hemoglobin molecule, sticks to other hemoglobin molecules in sickle cell disease patients and forms long, rod-like formations.
What does hemoglobin do?Red blood cells include a protein called hemoglobin, which distributes oxygen to your blood carries oxygen while returning carbon dioxide to your lungs. A low red blood platelet count indicates a low hemoglobin level, which can be determined by a hemoglobin test.
Is a high hemoglobin count okay?A related dangerous ailment is unlikely to be indicated by a high hemoglobin count if there are no other abnormalities. Adults with congenital heart disease are one example of a condition that might result in a high hemoglobin count. symptoms of COPD getting worse.
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the way light hits organisms in the open ocean impacts how easily both predators and prey can see each other. having darker dorsal pigmentation and lighter ventral pigmentation is called what?
Having darker dorsal pigmentation and lighter ventral pigmentation is called countershading.
Many animals have countershading, which is characterised by a darker dorsal surface and a brighter ventral surface. Many people believe that the dorsoventral pigment polarity is an adaptive colouring for camouflage. In contrast, genetic colour polymorphism in terrestrial animals results in the frequent occurrence of noncountershaded (melanistic) morphs within a species.
Although it may also improve thermoregulation or provide UV protection, this dorsoventral pigment polarity is ecologically explained as an adaptation for camouflage through the concealment of self-shadow and/or background matching.
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how is it possible for a muscle to shorten during contraction when there is no actual change in the length of the thich and thin filaments
They go past one another, shortening the sarcomere but maintaining the length of the filaments.
What purpose do the filaments serve?Microtubules, actin filaments, & intermediate filaments make up the cytoskeleton of a cell. These elements aid in the organization of the cell's components and give its cell its form. These provide the foundation for cellular division & movement too though.
From what is filament made?Traditional filaments are coils of wire that are housed inside glass bulbs and look somewhat like springs. Due to its high melting point, tungsten is typically used in their construction. The ability of tungsten to withstand heat is essential to the operation of filament lamps.
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in the telomere, the 3'-end is single-stranded with a 14-16 base overhang. there are two reasons for the 3'-end being longer than the 5'-end. the first is that the g-t strand (3'-end) is extended by the telomerase enzyme. what is the second reason?
The 3'-end is single-stranded with a 14-16 base overhang. there are two reasons for the 3'-end being longer than the 5'-end. the first is that the g-t strand (3'-end) is extended by the telomerase enzyme. the second reason is the C-A strand (5'-end) is enzymatically degraded.
A telomere is the region of repetitive DNA sequences at the end of a chromosome.
They protect the chromosome ends from DNA degradation, recombination, and DNA end fusions
The overhang in telomere is due to incomplete end replication.
They gets shorten during replication to avoid gene deletions.
the daughter chromosomes lose the 3′ overhang which was present in the parent and therefore, in the absence of telomerase this will accordingly result in the telomere shortening
if telomere are long, the cellular machinery result in a bit of telomere becoming looped off each time cells replicate DNA and divide,
as telomere shorten, chromosome themselves become vulnerable to damage and cell dies
therefore, shortening of telomere is necessary.
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Alexander the great, napoleon, mussolini, and hitler all suffered from which phobia? ailurophobia claustrophobia arachnophobia triskaidekaphobia.
Ailurophobia or fear of cats Alexander the great, napoleon, Mussolini, and Hitler all suffered.
Alexander the Great, Napoleon, Mussolini and Hitler, all suffered from ailurophobia the fear of cats. Ailurophobia is the extreme and irrational fear of cats.
Exposure therapy is considered to be one of the most effective treatments for phobias. This therapy works by exposing the patients with the one they fear . Therapy begins by looking at the picture of cats and gradually close interaction to decrease fear .
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The birth of the study of human relations within business organizations can be traced to?.
The Hawthorne studies can be traced to the birth of the study of human relations within business organizations.
The Hawthorne investigations, which Elton Mayo and Fritz Roethlisberger carried out between 1924 and 1932, gave rise to the human relations movement. The Hawthorne Effect is when participants in an experiment try to alter or enhance their behavior only because it is being assessed or researched. In the late 1920s and early 1930s, Western Electric's facility in the Chicago suburb of Hawthorne conducted tests that led to the invention of the phrase.
Hawthorne studies were created to look at ways to boost employee productivity. According to the Hawthorne theory of management, employee productivity is also dependent on management's concern for their well-being and the pay they are paid.
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the diagnosis for this patient is likely an autoimmune disease called . in which case, the patient's immune system is making antibodies that bind to , decreasing their function. inhibitors of are commonly used to treat the effects of this disease. in severe cases, the may be removed to reduce the release of hormones that stimulate antibody-producing cells. temporary removal of the harmful antibodies from the blood may be accomplished by a technique called .
The diagnosis for this patient is likely an autoimmune disease called myasthenia gravis. In which case, the patient's immune system is making antibodies that bind to acetylcholine receptors, decreasing their function. Inhibitors of acetylcholinesterase are commonly used to treat the effects of this disease. In severe cases, the thymus may be removed to reduce the release of hormones that stimulate antibody-producing cells. Temporary removal of the harmful antibodies from the blood may be accomplished by a technique called plasmapheresis.
What is myasthenia gravis?Myаstheniа grаvis (MG) is а chronic аutoimmune disorder in which аntibodies destroy the communicаtion between nerves аnd muscles, resulting in weаkness of the skeletаl muscles. Myаstheniа grаvis аffects the voluntаry muscles of the body, especiаlly those thаt control the eyes, mouth, throаt аnd limbs.
Your question is incomplete, but most probably your full question was
Case Study: A woman in her mid-30s began to experience drooping eyelids followed by difficulty in swallowing. As the condition progressed she began to feel an overall weakness. Tests indicated that she had an abnormally low number of acetylcholine receptors on her skeletal muscle cells.
Complete each sentence with the correct word or phrase regarding this patient.
thymusthyroidmultiple sclerosismyasthenia gravisacetylcholinesteraseacetylcholine receptorsplasmapheresisFor more information about myаstheniа grаvis refer to the link:
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Organisms such as some cyanobacteria convert gaseous nitrogen into other nitrogen compounds that other organisms can use to produce organic material. They are referred to as
It is referred to as FIXATION OR FIXATION OF NITROGEN. Bacteria like CYANOBACTERIA transform air nitrogen into useful, dissolved forms.
What illnesses do cyanobacteria cause in people?Depending on how you were exposed to cyanobacteria, there are different symptoms. Aside from liver damage, symptoms include contact dermatitis, stomach cramps, nausea, vomiting, diarrhea, fever, sore throat, headaches, muscle and joint discomfort, and mouth blisters.
What makes cyanobacteria valuable to humans?Current thinking is that cyanobacteria are a significant source of nutrients and biofuels, and they play a key role in original, creative, and energy-efficient designs. Because they have low requirements for organic resources and are autotrophic organisms, cyanobacteria are ideal for use
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A population of plants contains individuals with flowers that are yellow or red.
Over time, the population changes so that most individuals have orange
flowers. Which term describes the process that has occurred in this
population?
OA. Directional selection
B. Stabilizing selection
OC. Genetic drift
D. Disruptive selection
Answer:
Explanation:
Yes, It can be happned
The population change so that most of the individuals have orange flowers is an example of directional selection. Thus, the correct option is A.
What is Directional stabilization?In population genetics, the directional selection is a mode of negative natural selection through which an extreme phenotype is favored over the other phenotypes in a population, that causes the allele frequency of that particular allele to shift over time in the direction of that particular phenotype.
A population which changes over time so that most of the individuals have orange flowers is an example of directional stabilization.
Therefore, the correct option is A.
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how common are mutations during dna replication? a. about 5 nucleotides in 6.5 billion are changed during each replication. b. about 50 nucleotides in 6.5 billion are changed during each replication. c. no nucleotides are changed during each replication. d. about 5,000 nucleotides in 6.5 billion are changed during each replication. e. about 500 nucleotides in 6.5 billion are changed during each replication.
The mutations are common in the sense that about 5 nucleotides in 6.5 billion are changed during each replication (Option a).
What is the mutation rate?The mutation rate refers to the number of nucleotide changes that emerge at each replication cycle of the DNA molecule, which varies between different types of organisms, especially when comparing prokaryotes and eukaryotes.
Therefore, with this data, we can see that the mutation rate is the number of alterations in the DNA molecule after replication and the number is variable between different groups of species in nature.
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which type of self-tolerance entails differentiation of regulatory t cells that limit inflammatory cytokine secretion in secondary lymphoid tissue and at sites of inflammation
Functional deviation is a kind of self-tolerance that entails the differentiation of regulatory t-cells that limit inflammatory cytokine secretion in secondary lymphoid tissue and at sites of inflammation.
The immune system's capacity for self-tolerance is its capacity to see its own antigens as non-threats while correctly waging an attack against alien substances. Normal physiological function and general health depend on this equilibrium of immune defense and self-tolerance.
Normal self-tolerance is primarily maintained by clonal deletion of maturing peripheral T and B cells as well as clonal deletion of developing T and B cells.
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According to Table 3 and your pictures, which is better able to absorb enough
nutrients to supply its total volume, a small cell or a large cell? Explain.
Smaller single-celled organisms have a high surface-to-volume ratio, allowing them to survive by relying on waste disposal and oxygen diffusion. If the items have a higher surface area to volume ratio, this technique may work better.
Why is the size of the cell advantageously small?Because cells are so tiny, they may optimise their surface area to volume ratio. More molecules and ions can pass the cell membrane per unit of cytoplasmic volume in smaller cells due to their greater ratio. The reason why cells are so little is so that they can swiftly take in nutrition and expel waste.
The volume to surface area ratio is more favourable for material exchange with the environment via diffusion in smaller cells. Volume controls how much enters and exits the cell, whereas surface area controls the pace at which nutrients are taken in or eliminated.
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5) in contrast to inorganic catalysts, enzymes have an intricately shaped binding surface called the . a) substrate b) cofactor c) active site d) apoenzyme e) holoenzyme
In contrast to inorganic catalysts, enzymes have an intricately shaped binding surface called the - active site.
The correct option is c.
Proteins called enzymes aid in accelerating our bodies' chemical processes, or metabolism. Some compounds are created, while others are broken down. Enzymes are a part of all living things. Enzymes are created by our bodies spontaneously.
The vital function of enzymes is to reduce the activation energy of a process, or the amount of energy required for the reaction to start. In order to facilitate the chemical bond-breaking and bond-forming processes, enzymes bind to reactant molecules and keep them in place.
Metals and their oxides supported on porous materials are examples of inorganic catalysts, also known as heterogeneous catalysts, which imitate the exquisite function of enzymes found in nature's catalysts. Through adsorption, the reactants attach to the active sites on the metal surface.
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in poodles, black fur is dominant to white fur. a black poodle is crossed with a white poodle. in a litter of four, all of the puppies are black. what is the best conclusion? group of answer choices
The most appropriate conclusion is that the black poodle is most likely homozygous. two identical alleles present at a specific gene location.
What does a homozygous example entail?If you have two identical copies of a gene, you are said to be homozygous for that gene. It is the opposite of such a heterozygous genotype, in which the alleles are distinct. People with recessive features, such as red hair or blue eyes, are always homozygous for the that gene.
What is homozygous? imageThe chromosomes in humans are divided into two groups. Allele pairings are referred to either homozygous or heterozygous. Homozygous people are those who have two copies of the same allele (RR or rr). While heterozygous refers to a particular organism with multiple alleles (Rr).
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Which of the following is true about ecological succession?
O secondary succession is much slower than primary succession
O Primary succession comes after secondary succession
O During succession one species replaces another species over time
O a tornado would cause primary succession to occur
O secondary succession occurs when bare rock is colonized by organisms such as algae
Answer:During succession one species replaces another species over time
Explanation:example: If lichen comes first, then grass or whatever will gradually replace the the lichen (or another example, that one was kinda bad)
What is composed of cells that produce hormones and secrete them into the bloodstream?.
Endocrine gland composed of cells that produce hormones and secrete them into the bloodstream
Hormones are your body chemical messengers and they travel in your bloodstream to tissue or organ and endocrine gland which are the special groups of cell and make hormones and the major endocrine gland are the pituitary and thymus, thyroid and adrenal and in addition men produce hormones in their testes and women produce them in their ovaries and the endocrine gland system include cell, tissue and organ that are collectively called endocrine gland that's why endocrine gland release hormones into the bloodstream this let the hormones travel to cell in other part of the body
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which characteristic makes hemoglobin's structure such a good match for its function as an oxygen carrier
The characteristic makes hemoglobin's structure such a good match for its function as an oxygen carrier is that each hemoglobin molecule can bind four oxygen molecules.
What is hemoglobin?The iron-containing oxygen-transporting metalloprotein known as hemoglobin, often known by the abbreviations Hb or Hgb, is found in the red blood cells of almost all vertebrates as well as some invertebrate organs. The oxygen from the respiratory organs is transported to the rest of the body by hemoglobin in the blood.
What is the characteristic of hemoglobin?Hemoglobin is a two-way respiratory carrier that facilitates the movement of carbon dioxide back and forth from the lungs to the tissues. Hemoglobin's affinity for oxygen in arterial circulation is high, but its affinities for carbon dioxide, organic phosphates, hydrogen, and chloride ions are low.
Thus from above conclusion we can say that the characteristic makes hemoglobin's structure such a good match for its function as an oxygen carrier is that each hemoglobin molecule can bind four oxygen molecules.
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hat is the function of major histocompatibility complex (mhc) proteins? they promote phagocytosis by binding to antigens. they facilitate antigen recognition by t cell receptors. they stimulate cell division. they trigger endocytosis of the antigen.
The purpose of MHC molecules is to bind and display pathogen-derived peptide fragments on the cell surface so that the relevant T lymphocytes can recognise them.
What are MHC proteins, or major histocompatibility complex proteins?MHC, or the major histocompatibility complex, is a set of genes that produce proteins located on the cell surfaces and that aid the immune system in identifying foreign objects. In all higher vertebrates, MHC proteins are present. The complex in humans is also known as the HLA (human leukocyte antigen) system.
What exactly are MHC proteins, and why are they crucial?The major histocompatibility complex (MHC) is a collection of genes that code for cell surface proteins that play a significant part in the immune response. MHC molecules have a major role in how they display antigens.
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Diya wants to test the effect of listening to different types of music on the human heart rate. She takes the resting heart rate of her test subjects then has them listen to one type of music for 5 minutes and takes their heart rate again. Each test subject repeats the test listening to three different types of music.
What is the independent variable in Diya’s experiment?
A. Listening for 5 minutes
B. Effect of listening
C. Different types of music
D.Heart rate
What is the purpose of tRNA? Answer choices:
A. It carries DNA to the ribosome.
B. It contains a sequence of transcribed DNA out of the nucleus.
C.It is the major part of the ribosome.
D. It transfers amino acids to the ribosome during protein sysnthesis.
Brainliest to first correct answer! Have a nice day^^ Ty
The main purpose of the the RNA is that It contains a sequence of transcribed DNA out of the nucleus.
What is the tRNA ?The term tRNA has to do with the kind of ribonucleic acid that is responsible for the process of transfers during the reproduction of cells. The term tRNA is the short form for the name transfer ribo nucleic acid.
The purpose of the transfer ribonucleic acids is that they are able to carry on the sequence of the DNA and this is how we can be able to transcribe the genetic information to the nucleus of the cell.
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Which of the following represents biodiversity of species at a given scale?
1. All of these.
2. 5 foot strip of ground
3. Within 5 miles
4. Within 5 minutes
The correct answer from above which biodiversity of species at a given scale is:
All of these.
The correct answer choice is 1.
What is meant by biodiversity of species at a given scale?Biodiversity can simply be defined as different forms of species of living organisms.
From the task given above, 5 foot strips of ground, within 5 miles and within 5 minutes all represent biodiversity of species at a given scale.
Biodiversity is not only limited to species but cut across aspects of genetics and ecosystems.
In conclusion, we now know that 5 foot strip of ground is one of the major scale of biodiversity.
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slight increase in numbers of lymphocytes: a.lymphopoiesis b.lymphocytosis c.lymphedema d.lymphoid e.lymphocytopenia
A slight increase in the number of lymphocytes is called Option B. Lymphocytosis.
A lymphocyte is a form of white blood cell within the immune system of most vertebrates. Lymphocytes include natural killer cells, T cells, and B cells. they're the primary form of cell observed in lymph, which triggered the call "lymphocyte". Lymphocytes make up 18% and 42% of circulating white blood cells.
A form of immune mobile that is made within the bone marrow and is observed within the blood and in lymph tissue. the two main varieties of lymphocytes are B lymphocytes and T lymphocytes. B lymphocytes make antibodies, and T lymphocytes assist kill tumor cells and assist control immune responses.
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synthetic hormones are beneficial to farmers but harmful to consumers justify the statement
Synthetic hormones are beneficial to farmers but harmful to consumers because they may remain in the food and therefore be harmful to human health, which is known as bioaccumulation.
What are synthetic hormones?Synthetic hormones are specific hormones used in crop production and animal production in order to increase yield or meat production, although it also raises concerns regarding bioaccumulation that may be harmful to human health.
Therefore, with this data, we can see that synthetic hormones may generate concerns in regard to the well-being of individuals and therefore these hormones should be tested before use.
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the pathological condition of the myocardium that is reversible and caused by a lack of oxygen to the tissue is:
The pathological condition of the myocardium that is reversible and caused by a lack of oxygen to the tissue is angina.
Angina is caused by reduced blood flow to the heart muscle. Blood carries oxygen, which the heart muscle needs to survive. When the heart muscle isn't getting enough oxygen, it causes a condition called ischemia.
Angina pain is often described as squeezing, pressure, heaviness, tightness, or pain in the chest. It may feel like a heavy weight lying on the chest. Angina may be a new pain that needs to be checked by a health care provider or recurring pain that goes away with treatment.
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which of the following choices correctly pairs a part of the digestive tract with a nutrient digested there? group of answer choices
The small intestine absorbs most of the nutrients in food.
The majority of the nutrients in your meal are absorbed in your small intestine before being transported by your circulatory system to other areas of your body for storage or utilization. A special type of cell helps nutrients pass through the gut lining and into the circulation. Simple sugars, amino acids, glycerol, certain vitamins, and salts are transported to the liver by your blood. When necessary, your liver processes, stores, and distributes nutrients to the rest of your body.
Fatty acids and vitamins are absorbed by the lymph system, a system of capillaries that transports white blood cells and a fluid called lymph throughout the body to fight infection.
The body creates the molecules required for energy, growth, and cell repair using sugars, amino acids, fatty acids, and glycerol.
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