The parameters to be considered as DDT moves up are concentration and bioaccumulation of DDT
DDT known as dichlorodiphenyltrichloroethane is a persistent organic pollutant that can move up the food web of an ecosystem, accumulating in higher trophic levels over time. As DDT moves up the food web, it is important to monitor environmental parameters affected by its presence. Some of the key parameters to monitor include:
The concentration of DDT in biotic samples: This can be measured by collecting samples of plants, and animals, from different food web levels and analyzing them for the presence of DDT.The concentration of DDT in the environment: This can be measured by collecting samples of soil, water, or air and analyzing them for the presence of DDT.Bioaccumulation of DDT: This can be measured by analyzing the tissues of plants and animals for the presence of DDT, and determining its concentration in different organs or tissues.Behavioral changes in plants and animals: Changes in the behavior of plants and animals can be monitored to determine if they are being affected by DDT.Read more about DDT on:
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14.The graph above shows a predator vs. prey relationship in an ecosystem. Which of the following is MOST consistent with the evidence in the graph?
aquarium a contains warm water and several fish; b contains cold water, several fish, and aquatic algae; c contains warm water and several frogs; and d contains warm water and sedentary animals. which aquarium should have a large amount of air bubbled into it to maintain good oxygenation of the water?
Aquariums have to have a huge amount of air bubbled into it to hold precise oxygenation of the water
massive amount of air, due to the fact the oxygen-sporting capacity of heat water is low.
An aquarium is a vivarium of any size having at least one transparent facet in which aquatic plant life or animals are saved and displayed. Fishkeepers use aquaria to maintain fish, invertebrates, amphibians, and aquatic reptiles, which include turtles, and aquatic flora. The time period aquarium, coined via English naturalist Philip Henry Gosse, combines the Latin root aqua, which means 'water', with the suffix -atrium, which means a place for relating to.
according to the studies having an aquarium is many fitness advantages lessening pressure, blood strain, and heart charge improvement, higher nice sleep, lessening tension and pain, the remedy of excited youngsters, Alzheimer's therapy, and improve productiveness
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer: A. plant trees
Explanation:
Which pituitary hormone causes a decrease in the amount of water lost in the kidneys?
Answer:
Antidiuretic hormone (ADH)
Explanation:
ADH regulates the amount of water that is reabsorbed into your kidneys while they filter waste from your blood.
Dichotomous keys consist of a series of paired choices, called couplets, that reflect physical characteristics of the organism.
a. True
b. False
Dichotomous keys is a device that enables to become aware of an unknown organism.
A dichotomous secret is a chain statements inclusive of 2 alternatives that describe traits of the unidentified organism. Conventional dichotomous keys include a chain of paired alternatives referred to as couplets. Each couplet gives the consumer with opportunity and extraordinary units of characters that distinguish one organization of organisms from the other.
Dichotomous keys include a chain of statements with alternatives in every step with a purpose to lead customers to the precise identification. This form of key isn't difficult to use, however makes greater experience whilst college students adopt the procedure of creating one earlier than using.
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when a sperm cell enters a secondary oocyte, what event in the oocyte is immediately triggered? when a sperm cell enters a secondary oocyte, what event in the oocyte is immediately triggered? ovulation meiosis i meiosis ii cytokinesis mitosis
The meiosis II event is immediately triggered as soon as a sperm cell enters a secondary oocyte.
The oocyte is stopped in its tracks as the main oocyte during the first meiotic division. Each menstrual cycle, the gonadotropin hormone (also known as a luteinizing hormone) encourages the completion of meiosis 1 on the day before ovulation. Two haploid daughter cells are produced following meiosis: one develops into a secondary oocyte and the other becomes the first polar body. Meiosis 2 begins in the newly created secondary oocyte, stops during metaphase and continues after fertilization.
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Suppose that the quantity of chain saws sold increased from 200 to 400 when the price fell from $225 to $175. Over this price range, the absolute value of the price elasticity of demand for chain saws is.
Answer: 2.67
Explanation:
since that will be the chain saw demand price elasticity in absolute terms, or isa.
When the price fell from $225 to $175, the sales increased from 200 to 400. The price elasticity of demand is 3.5
The price elasticity of demand measures how sensitive the change of quantity to the change of price.
Price elasticity of demand = % change in quantity / % change in price
In the given problem:
change in quantity = 400 - 200 = 200
% change in quantity = 200/200 = 100%
change in price = $175 - $225 = -$50
% change in price = 50 / 175 = 28.57%
Note that we always take the absolute or positive value when calculating the price elasticity.
Hence,
Price elasticity of demand = % change in quantity / % change in price
= 100% / 28.57% = 3.5
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genomic instability leads to the accumulation of many passenger mutations that do not directly impact tumor progression.genomic instability leads to the accumulation of many passenger mutations that do not directly impact tumor progression. a small percentage of the total number of mutations in a cancer cell are driver mutations.a small percentage of the total number of mutations in a cancer cell are driver mutations. driver mutations are those mutations that occur in every type of cancer.driver mutations are those mutations that occur in every type of cancer. lung cancer cells from two different patients could have different driver mutations.lung cancer cells from two different patients could have different driver mutations. a single driver mutation is sufficient for cancer development.a single driver mutation is sufficient for cancer development. a small percentage of the total number of mutations in a cancer cell are passenger mutations.
Genome, exome, and transcriptome sequencing analysis has been used more frequently in large-scale molecular characterization projects like the ICGC [5] and TCGA [15] as a result of its ability to detect genomic variations in cancer. This has aided in the identification of oncogenic drivers and potential drug targets. The genomic characterization of cancer, advancements in our understanding of cancer biology, and novel approaches to determining the cause of cancer, patient stratification, disease management, and response monitoring have all been particularly helpful.
inGenomicstability is regarded as the fundamental component of the molecular classification of cancer; the induction of genomic instability results in greater mutational rates, which accelerates the accumulation of "adaptive drivers" As a result, there are more passengers on the road, which can counteract the negative effects of these drivers and slow the growth of tumors [16]. The most prevalent kind of genomic instability is chromosomal instability, which is characterized by a high frequency of chromosome structural changes in tumor cells. Microsatellite instability is a special case of this kind of genomic instability and is defined by the expansion or contraction of the oligonucleotide repetitions contained in microsatellite sequences [17,18]. Another variant is characterized by an enhanced nucleotide mutation rate.
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a scientist creates a d1 receptor knockout mouse. how would this affect the functioning of the basal ganglia?
A scientist develops a d1 receptor deletion animal. Since the input from the cerebral cortex to spiny neurons is not improved, the basal ganglia function is affected.
The most prevalent dopamine receptor in the central nervous system is the dopamine receptor D1 (Drd1), which belongs to the D1-like receptor family. The striatum, limbic system, cortex, and cardiovascular system all have the receptor. In the brains of vertebrates, a set of subcortical nuclei known as the basal ganglia (BG) or basal nuclei are present. There are some distinctions between humans and certain primates, namely in the striatum's split and the separation of the globus pallidus into an exterior and internal part.
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the endocrine or hormone-secreting cells of the gastrointestinal tract are located in or closest to which layer of the gut wall?
The mucosa layer of the gut wall is where the endocrine or hormone-secreting cells of the gastrointestinal system are found.
Specialized cells of the digestive system and pancreas having an endocrine role are called enteroendocrine cells. In reaction to diverse stimuli, they create gastrointestinal hormones or peptides that are then released into the circulation for systemic effects, spread as local messengers, or are sent to the enteric nervous system to trigger neural responses. The mucosa is the digestive system's innermost layer. It encircles the lumen of the tract and is in direct touch with food that has been digested (chyme). The mucosa is made up of three layers: the connective tissue-rich lamina propria; the epithelium, which is where the majority of digestive, absorptive, and secretory functions take place.
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1. describe what happens at the e, p, a sites of ribosomes during translational initiation, elongation, and termination.
During elongation, tRNAs move through the A, P, and E sites of the ribosome, as shown above. This process repeats itself many times as new codons are read and new amino acids are added to the chain.
What are ribosomes?These are small particles measuring from 20 nm to 30 nm, without membranes and made up of proteins and ribosomal RNA (rRNA). Some authors claim that ribosomes are non-membranous organelles, others, however, assume the idea that they, due to the absence of membranes, cannot be considered cellular organelles.
In eukaryotes, ribosomes are made up of four types of ribosomal RNA and approximately 80 different proteins. Most ribosomal RNA is produced in the nucleolus, while proteins are produced in the cytoplasm. The proteins that will form the ribosome migrate from the cytoplasm to the nucleus and associate with ribosomal RNA, forming subunits that migrate to the cytoplasm.
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Which color is the tube and stopper that is used to collect specimens for serum analysis?
The tube & stopper used to collect samples for serum analysis are red, signifying a serum tube either with or without a gel or clot activator.
Used mostly for serology and chemical tests, tube without gel separator. Antibody screening in blood banks uses 10mL Red top tubes.
It is utilized for the mentioned laboratory tests to collect serum. Use a red-top tube if a test calls for a specimen, not a gold top since the gel separator might impede the analysis.
Each evacuated blood product tube has a color-coded plastic and rubber cap on top of it. The type of chemicals in the tube is indicated by the tube's color. Chemicals like anticoagulants that keep the blood intact for laboratory processing are examples of additives.
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what structure allows the diaphysis of the bone to increase in length? group of answer choices epiphyseal plate osteon lacunae epiphyseal line
The epiphyseal plate, which is compatible with response option "C," is the structure that permits the diaphysis of the bone to lengthen until early childhood. This is frequently referred to as the growth plate. Mature bones have the epiphyseal line, which is the remaining portion of the epiphyseal plate.
The region of growth in a long bone is called the epiphyseal plate. Hyaline cartilage makes up the layer where ossification takes place in developing bones. Cartilage develops on the epiphyseal side of the epiphyseal plate. Ossification of the cartilage on the diaphyseal side permits the diaphysis to lengthen. The diaphysis of the bone can lengthen until early adulthood thanks to the epiphyseal plate. When growth slows, the cartilage of the epiphyseal plate is replaced by bone, which subsequently becomes the epiphyseal line. One of the two forms of osseous tissue that make up bones is the compact bone. The diaphysis might lengthen because to the hyaline cartilage found in the epiphyseal plate. when this expansion halts.
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Who has right of way at an uncontrolled junction?
At an uncontrolled junction, drivers are required to give the right of way to the vehicle that approaches the junction first if there isn't a stop sign or traffic light.
The vehicle on the right has the right of way if two or more vehicles arrive at the junction at the same time. Some other conditions are:
Pedestrians have the right-of-way at four-way stops at all times.When merging, a motorist must give way to any oncoming traffic.A motorist must give way to other cars and pedestrians in the main route when crossing the highway or accessing it from a side road.Learn more about yielding the right of way here:
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in studying the rates of evolution of regions across the genome, scientists identify several regions evolving more rapidly than neutral sites in humans but not in chimps. how should they interpret this result?
Selection for new mutations will result in higher than neutral rates of evolution. Such changes are especially clustered in human genes associated with resistance to diseases that likely plagued early human populations.
The total collection of DNA instructions present in a cell makes up the genome. The human genome is made up of 23 pairs of chromosomes that are found in the cell's nucleus and one tiny chromosome that is found in the mitochondria. Everything a person needs to grow and operate is encoded in their DNA.
What three sorts of genomes are there?
As we discovered in the above example, there are three genome types that exist since the mutation is A–G: AA, AG, and GG. The GG type of these three genome types has the most anti-alcohol action, whereas the AA type has the least activity and can hardly digest alcohol.
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Process by which four haploid cells are formed from one diploid cell is ?​
One diploid cell divides into four haploid cells during the meiotic process.
Starting with a single diploid cell and ending with four haploid cells, meiosis entails two nuclear and cell divisions without interphase in between. The four phases of each division meiosis I and meiosis II are prophase, metaphase, anaphase, and telophase.
Meiosis is characterized by DNA replication, two rounds of cell division, and the production of four daughter cells, each of which has half as many chromosomes as the parent cell. Meiosis I and Meiosis II are the names of the two meiotic divisions.
Gametes or sex cells are created during meiosis. Four haploid daughter cells, each formed during meiosis, are created.
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Read the statements that follow.
Pea plants have a mutation that causes their flowers to be white instead of purple. This mutation does not affect a plant's fitness or ability to reproduce because pea plants
are self-pollinated.
Which type of mutation is described in the statements?
Obeneficial mutation
O negative mutation
neutral mutation
O
O positive mutation
Answer: neutral mutation
Explanation: nothing really changed minus he colour that's why it netural
glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting __________.
Glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting less than 3 minutes.
Glycolysis is the universal process of breakdown of glucose as it occurs in aerobic as well as anaerobic organisms. The process occurs in the cytoplasm and does not require oxygen. The end product of glycolysis is the three carbon molecule called pyruvate.
Carbohydrates are the organic biomolecules required by the body for energy and body-building. Chemically carbohydrates are the polyhydroxy aldehydes and ketones. There are three types of carbohydrates: monosaccharides, disaccharides and polysaccharides. Carbohydrates help in providing the instant energy to the body.
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glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting __________.
Glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting Generally less than 3 minutes.
The metabolic process that turns glucose into pyruvate is glycolysis. The high-energy molecules adenosine triphosphate and reduced nicotinamide adenine dinucleotide are made from the free energy that is released during this process. A sequence of ten reactions called glycolysis is initiated by enzymes.
It lasts anywhere from ten seconds to two to three minutes after beginning physical activity. Glycogen, our stored form of glucose, provides the energy for glycolysis. Glycolysis breaks down glucose, a 6-carbon molecule, in two stages in the cytoplasm.
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soon after amniotic vertebrates appeared, two different evolutionary lineages began to diverge. they are:
Amniotes dispersed across Earth's surface and eventually dominated the land vertebrate kingdom. They quickly split into the synapsids and sauropsids, two clades whose lineages are still extant today. Protoclepsydrops, a fossil synapsid from around 312 million years ago, is the oldest fossilized synapsid known. Hylonomus and Paleothyris, two sauropsids from the order Captorhinida, are most likely the oldest known sauropsids (c. 306–312 million years ago). Based on the outmoded notion of the evolutionary grand chain of being, earlier literature, particularly those written before the 20th century, may refer to amniotes as "upper vertebrates" and amniotes as "lower vertebrates."
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if an aerobic gram-negative rod causing bacteremia proves to be resistant to aminoglycosides, the mechanism of resistance is most likely due to:
The most prevalent form of resistance to aminoglycosides is enzymatic modification. There are more than 50 distinct enzymes known. High-level resistance is the product of enzymatic change.
Gram-negative bacteria have a membrane covering their outer surface that protects them from their surroundings. This membrane can be used by these bacteria to block the entry of specific antibiotics. Aminoglycosides are effective bactericidal antibiotics that work by rupturing the bacterial cell's outer membrane. They work together to combat some gram-positive organisms and are very effective against aerobic, gram-negative bacteria. The mechanism of action of aminoglycosides requires inhibition of polypeptide synthesis. In fact, some of them, such as streptomycin, cisomycin, and gentamicin, are thought to increase the incorporation of specific amino acids into the polypeptide of the ribosome-polyribonucleotide system, which is thought to lead to codon misreading.
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What is a niche (in a simple definition)?
What niche would a monarch butterfly have and why?
(please explain in your own words)
A niche may be defined as a place or an area where the functional role is played by an organism in an ecosystem. It is known that every living organism has a particular feeding habit that is decided by nature.
What is an advantage of niche?An advantage of a niche can be determined by the fact that it can be regarded as an area or set of environmental factors or the surrounding of an individual where it performs its functional role.
Monarch butterflies contribute to the health of our planet. While feeding on nectar, they pollinate many types of wildflowers. They have a type of niche known as a generalized niche.
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The _______ membrane of the maculae sacculi and utriculi are important in sensing gravity and motion?
It is otolithic membrane is the membrane of the maculae sacculi and utriculi are important in sensing gravity and motion
Vestibule is a place of the internal ear which includes the saccule and the utricle, every of which include a macula to locate linear acceleration.
Its feature is to locate vertical linear acceleration. The macula of saccule lies in a almost vertical position. The otolithic membrane is a fibrous shape positioned within side the vestibular device of the internal ear. It performs a crucial function within side the brain's interpretation of equilibrium.
The membrane serves to decide if the frame or the top is tilted, further to the linear acceleration of the frame. Utricle and saccule are the 2 otolith organs within side the vertebrate internal ear. They are a part of the balancing device (membranous labyrinth) within side the vestibule of the bony labyrinth (small oval chamber). They use small stones and a viscous fluid to stimulate hair cells to locate movement and orientation.
The otolith membranes of the Maculae Sacculi and Utriculi are important for sensing gravity and motion, as they contain small crystals of calcium carbonate that trigger nerve impulses to the brain when the head moves.
Therefore, it is otolithic membrane is the membrane of the maculae sacculi and utriculi are important in sensing gravity and motion.
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what structure allows the lymphatic system to absorb dietary fats from the small intestine?
The initial lymphatics in the villi of the small intestine referred to as lacteals, acquire fluids, electrolytes, and proteins from their surrounding interstitial area.
What are Lacteals?Lacteals are the lymphatic capillaries that take in fat and fat-soluble nutrients in the villi of the small gut. Thanks to its large diameter than blood capillaries, fat molecules are absorbed by lacteals from the gut.
Villi that line the walls of the small gut soak up nutrients into the capillaries of the circulatory system and lacteals of the lymphatic device. Villi comprise capillary beds, in addition to lymphatic vessels known as lacteals.
Therefore, The initial lymphatics in the villi of the small intestine referred to as lacteals, acquire fluids, electrolytes, and proteins from their surrounding interstitial area.
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organisms that live on land are fundamentally the same as organisms that live in aquatic environments. t or f
The given statement is false that the land organisms are fundamentally the same as organisms that live in aquatic environments.
Aquatic environment refers to the water habitats that can be either freshwater or marine. The organisms of aquatic environments usually take the dissolved oxygen of water. However some are the terrestrial ones that can come out of water to breathe. The examples are: fishes, frogs, seals, whales, etc.
Land organisms are the ones that live entirely on land and cannot exist in water. They breather through the oxygen in the air. The example of such organisms are: humans, cats, dogs, lions, etc.
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According to the biological species concept, a species is a population whose members ______.
According to the biological species concept, a species is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring. The seperation between species is maintained by Reproductive isolation, which prevents gene flow between species. But in some cases, distinct species can occasionally interbreed producing Hybrid offspring.
The concept of biological species. The zoologist Mayr (1942), who defined species as "groups of actually or potentially interbreeding natural populations that are reproductively isolated from other such groups," was the first to produce the most quoted definition of what he called "biological species" in the nineteenth century.
Speciation is the process by which new species emerge. Speciation occurs when an ancestral species divides into two or more descendant species that are genetically distinct from one another and cannot interbreed. The biological species concept (BSC) was developed to aid understanding of biological diversity, specifically the widely observed fact that sexually reproducing organisms exist in more or less distinct phenotypic and genetic clusters rather than a continuum of forms.
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multigene families include two or more nearly identical genes or genes sharing nearly identical sequences. a classical example is the set of genes for globin molecules, including genes on human chromosomes 11 and 16. how might identical and obviously duplicated gene sequences have gotten from one chromosome to another?
By chromosomal translocation , A chromosomal translocation is characterized by the breakage of a chromosome and its whole or partial reattachment to another chromosome.
A segment from one chromosome gets moved to a nonhomologous chromosome or to a different position on the same chromosome during a translocation.
Translocations create chromosomes without the typical pairing partners and insert genes in novel linkage connections.
One of the most frequent forms of genomic rearrangements, chromosomal translocations serve as molecular markers for a variety of malignancies. They are regarded as the main factors in the development of malignancies, particularly lymphoma and leukemia.
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What type of inheritance pattern has the expression of two dominant alleles?
Codominance occurs when both alleles are dominant. The resultant trait is the result of both alleles being expressed equally.
The blood group AB is one example of this, since it results from the codominance of the A and B dominant alleles.
Codominant inheritance occurs when two separate variants (alleles) of a gene are expressed, each producing a slightly different protein. Both alleles have an effect on the genetic trait or determine the features of the genetic disease.
Codominant inheritance occurs when two separate variants (alleles) of a gene are expressed, each producing a slightly different protein. Both alleles have an effect on the genetic trait or determine the features of the genetic disease.
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What is the best explanation of how two organelles work together to maintain homeostasis within a cell?.
Organelles work together to maintain homeostasis by each performing different jobs that keep the cell alive. This division of labor helps keep the cell in balance, and different organelles rely on each other for their products. For example, the mitochondria make energy.
What two organelles work together in the cell?Mitochondria and peroxisomes are closely linked through membrane contact sites. In the past, researchers verified the close relationship between the two organelles by studying their spatial structure by using a series of experimental methods.Function of cell organelles is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.Learn about organelles here: brainly.com/question/2135497
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Part A-RNA interactions with MRNA and the ribosome th mHNA and the ribosome Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino acids. A ribosome has three binding sites, each of which has a distinct function in the tRNA-mRNA interactions. Drag the appropriate tRNAs to the binding sites on the ribosome to show the configuration immediately before a new peptide bond forms. Note that one of the binding sites should be left empty
Part A-RNA interactions with MRNA and the ribosome th mHNA and the ribosome Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino acids. Each type of tRNA has a sequence of three unpaired nucleotides called the anticodon.
That can bind to the corresponding triplet of nucleotides called the codon in a messenger RNA (mRNA) molecule by following the base pairing principles. The reading of codons in mRNA (5' -> 3') necessitates that the anticodons bind in the opposite direction, just as DNA replication and transcription need base pairing of nucleotides running in opposite directions. The translational unit is made up of the larger and smaller of the two ribosomal subunits. As the amino acid sequences are translated from the mRNA, proteins are created. For the expression of genes, all of these components cooperate. The amino acid linkages are formed as the anticodon reads the mRNA's sequence.
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