Map distance from gene to centromere is 110bp.
Genetic map distance is roughly proportional to the physical distance, i.e. the amount of DNA between two loci. Gene map distance is the distance between two points on a chromosome that are counted by the number of crossovers between them.
For example, suppose we have in Arabidopsis species is 1.0 cM this means that this species contains approximately 150,000bp and contains approximately 50 genes in the loci . Thus, Genetic map distance is a unit for measuring distance between genes on a chromosome according to the frequency of recombination between them.
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When a human donor gives a pint of blood, it usually requires how many weeks for
the body
RESERVE of red corpuscles to be replaced? Is it:
When a human donor gives a pint of blood, it usually requires 7 weeks for the body RESERVE of red corpuscles to be replaced.
What are red corpuscles?Red blood cells, also referred to as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues—via blood flow through the circulatory system.
Moreover, red blood cells carry oxygen from our lungs to the rest of our bodies. Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.
Therefore, blood and lymph cells are both considered to be corpuscles because they are suspended in liquid within the body. Sometimes the word is used to mean simply "a small piece of something,".
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which of the statements correctly contrasts anabolic and catabolic pathways?anabolic pathways are exothermic, whereas catabolic pathways are endothermic.anabolic pathways are aerobic, whereas catabolic pathways are anaerobic.anabolic pathways are biosynthetic, whereas catabolic pathways are degradative.anabolic pathways are exergonic, whereas catabolic pathways are endergonic.
The statement that correctly contrasts anabolic and catabolic pathways is: (3) Anabolic pathways are biosynthetic, whereas catabolic pathways are degradative.
Anabolic pathways are biosynthetic that means they are involved in the formation of molecules. The process combines smaller molecules to form large macromolecules. This process usually requires the input of energy. It is a part of metabolic reactions. The example is synthesis of glycogen from glucose.
Catabolic pathways are also a set of metabolic reactions. It is a degradative pathway because it breaks the large macromolecules into smaller units. The pathway usually releases energy. The examples are glycolysis, beta oxidation, etc.
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intervertebral discs comprised of fibrocartilage are found within what type of joints? multiple choice question. symphyses syndesmoses synchondroses sutures
Intervertebral discs comprised of fibrocartilage can be found at the symphyses.
Intervertebral discs are discs made of cartilage that function to prevent spinal structures from rubbing against each other and serve as cushions for the spine. Cartilage which is made of dense, clear, bluish-white and very strong material has two types of joints, one of which is the symphysis joint where the bones are connected by flat fibrocartilage discs which remain unhardened throughout life., for example, the intervertebral disc and pubic symphysis which join the pub part of the right and left vertebrae. For this reason, the symphysis joint is often referred to as a fibrocartilaginous joint.
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a particular virus strain is highly effective in activating an immune response. in other words it has a high degree of
A particular virus strain is highly effective in activating an immune response. in other words it has a high degree of immunogenicity .
Immunogenicity tells about the capability of a molecules to induce cellular and humoral immune response. Immunogenicity of any antigen is defined by four properties these are Foreignness, molecular size, chemical composition and heterogenicity .
Proteins and few polysaccharides have immunogenic properties, that allows them to induce humoral immune responses They are chemically more complex also bacteria , have so many different proteins and each different protein have different epitopes.
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for the eukaryotic dna sequence shown, what region of the dna will be transcribed into mrna? a. 1-123 b. 21-101 c. 41-101 d. 41-123 hint
The dna's 41-100 area will be translated into mrna for such eukaryotic DNA sequence that has been shown.
What constitutes a eukaryotic?Any cell or creature that has a distinct nucleus is called a eukaryote. The nucleus, which houses the clearly defined chromosomal (bodies containing the hereditary material), is surrounded by a nuclear membrane in eukaryotic cells.
What are eukaryotic cells primarily used for?Conclusion. Within eukaryotes, organelles perform a variety of specialised tasks include energy synthesis, photosynthesis, and membrane creation. The majority are membrane-bound organelles that serve as the locations of particular biochemical processes.
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According to the results of this experiment, germination of tobacco seeds during the first week is ______.
According to the results of this experiment, germination of tobacco seeds during the first week is increased by exposure to light.
It is presumable that light affects the germination of tobacco seeds in at least two different ways. It does this by first turning on the PHY signal pathway, which releases photo-dormancy and encourages germination. Second, in tobacco seeds that are not photo-dormant, light speeds up endosperm rupture. Therefore, on performing an experiment to germinate tobacco seeds, germination would increase on exposure to light.
Because the tobacco seed is so tiny, it must be sown indoors. It needs a minimum temperature of 65 degrees in order to germinate. Six weeks before the last frost, plant the seed in seed compost rather than potting soil. When planting, just lay the seed directly on top of the compost.
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a mitotic daughter cell has just been formed and contains 12 non-replicated chromosomes. how many replicated chromosomes were contained in the parent cell before the two daughter cells were formed?
During mitosis, the number of replicated chromosomes contained in the parent cell before two daughter cells are formed is still 12 chromosomes.
The number of chromosomes does not change during mitosis. The phase in which the cell prepares for division is called interphase. If a cell has 12 chromosomes during interphase, the number of chromosomes in each daughter cell remains 12 even after mitosis ends.
The characteristics of mitosis are:Cleavage takes place once.The number of daughter cells produced is two.The number of chromosomes in the daughter cells is the same as the number of chromosomes in the parent cell, which is 2n (diploid).The properties of the daughter cells are the same as those of the parent.Occurs in body cells (somatic cells) for example in embryonic tissue, including root tips, stem tips, and cambium circles.The mitotic division aims to multiply cells such as the growth or repair of damaged cells.Learn more about mitosis here https://brainly.com/question/23750975
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a country with an age distribution graph in the shape of an inverted (upside down) triangle, (with the point facing downward) would be experiencing what in the years ahead: a. rapid future population growth b. declining future population growth c. no change in future population growth d. no prediction can be made from these types of graphs
A country with an age distribution graph in the shape of an inverted (upside down) triangle, (with would be experiencing declining future population growth.
The term "diminishing" refers to a graph with an inverted "pyramid" or triangle shape age structure, which shows a population that is getting smaller. The population will decrease since the generations in reproductive years have given birth to a generation that is smaller than themselves. With its broad top and noticeably narrower base, the inverted triangle shape demonstrates all of this. Therefore, option B marks the right choice.
Comparing differences between a region's male and female populations can be done using a population pyramid. Additionally, they display the total number of dependents (children and, occasionally, elderly people) as well as the demographic makeup of the population at any given time.
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what morphological features have traditionally been used to classify animals, but are now recognized as being less useful in determining evolutionary relationships than originally thought
segmentation; presence/absence of a coelom are the morphological features that have traditionally been used to classify animals but are now recognized as being less useful in determining evolutionary relationships.
Animals are primarily divided into groups based on their physical and developmental traits, such as their body plans. The morphological symmetry of genuine animals' body plans is one of their most notable characteristics. This implies that the distribution of their bodily components along an axis is balanced. The number of tissue layers that form throughout development, the existence or absence of an internal body cavity, and other aspects of embryological development, such as the mouth's and the anus's genesis, are additional characteristics.
The complete question is:
What morphological features have traditionally been used to classify animals, but are now recognized as being less useful in determining evolutionary relationships than originally thought?
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can the biological species concept be applied to organisms that reproduce both asexually and sexually
The concept of biological species does not apply to asexual organisms.
The concept is dependent on interbreeding on diverse species , the concept cannot be applied on asexual organism because their reproduction takes place as a result of mutation in their DNA.
Biological species concept defines a species as members of populations that actually or potentially interbreed in nature, not dependent on similarity or appearance. Their appearance are useful in identifying species, but it does not define species. On the other hand A single biological species concept based on gene flow is applicable to all cellular form of life .
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explain the cellular/molecular reason why individuals with both alleles have patches of each phenotype, rather than a mixture of both.
Alleles may exhibit codominance or incomplete dominance instead of being fully dominant or recessive to one another.
The type of relationship between alleles, with a heterozygote phenotype intermediate between the two homozygote phenotypes, is called incomplete dominance. An example is a hybrid between a homozygous white-flowered plant , homozygous plant with red flowers , a plant with pink flowers would result in offspring.
Codominance, in which both alleles are concurrently expressed in the heterozygote, is closely connected
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What is a group of cells that run from left to right and are identified by numbers?.
Using the concepts of cell ,we got that range is a group of cells that run from left to right and identified by numbers.
Cell, in biology, is basically the basic membrane-bound unit that contains the fundamental molecules of life and of which all the living things are composed. A single cell is also a complete organism in itself, such as a bacterium or yeast. Other cells which acquire specialized functions as they mature. These cells cooperate also with other specialized cells and become building blocks of large multicellular organisms, such as humans and other animals.
Hence, the group of cells that run from left to right and are identified by numbers is range.
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if meselson and stahl never saw their original band of labeled dna move or change, what would that have supported?
If Meselson and Stahl never saw their original band of labeled DNA move or change, the experiment would have supported the model of semi-conservative.
The experiment carried out by Meselson and Stahl proved that DNA replicates semi-conservatively, i.e., each strand of a DNA molecule acts as a template for the synthesis of a new, complementary strand. These studies, according to Meselson and Stahl, demonstrated the semi-conservative nature of DNA replication. The DNA strands split apart and replicated one another, resulting in daughter molecules that included both an "old" and a "new" DNA strand.
When a new double-stranded DNA molecule is created, one strand will come from the original template molecule, making DNA replication a semi-conservative process. There will be a brand new strand created. In order to separate various compounds in a solution, Meselson and Stahl utilized density-gradient centrifugation. Later, they used the same technique to separate DNA molecules in a solution.
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the rate of decay for carbon-14 is -0.693 b and its the half-life is 5,730 years. if an organism has 45% of its carbon-14 compared to the living sample. how old is the fossil?
If the organism has 45% of its carbon-14 compared to the living sample then the fossil is 6555 years old.
Given that,
ln [tex]N_{t}[/tex]= ln N₀ − λt
= ln ([tex]N_{t}[/tex] / N₀) = − λt
We can the value of λ using the expression,
λ = 0.693 / [tex]t_{1/2}[/tex]
= 0.693 / 5730
= 1.209 × 10⁻⁴ a⁻¹
Putting in the numbers we get,
ln (45 / 100) = 1.209 × 10⁻⁴ a⁻¹ × t = -0.7985
t = 0.7985 / (1.209 × 10⁻⁴)
t= 6555 years
Hence the sample is 6555 years old.
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6. Why do you think that changing the temperature changes the rate of
photosynthesis?
The quantity of enzyme-substrate collisions limits the pace of photosynthesis at low temperatures. The rate of photosynthesis rises as a function of temperature because there are more collisions as a result.
Why does the rate of photosynthesis first rise with temperature and then fall?Photosynthesis is a specialized enzyme-based process. The enzymes involved in this process operate best at a certain temperature.
Enzymes denature if the temperature rises over the maximum optimal temperature, which slows the rate of photosynthesis.
The rate of photosynthesis grows as the temperature rises, much as other chemical processes.
Enzymes, which regulate photosynthesis, get denatured at high temperatures. The rate of photosynthesis therefore reaches its peak.
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question mode multiple choice question neurotransmitters function multiple choice question. only to stimulate neurons to fire. neither to stimulate nor inhibit neuron firing. only to inhibit neurons from firing. to stimulate or inhibit neuron firing.
Neurotransmitters have the ability to neither promote nor inhibit neuronal activation.
Option B is correct.
Multiple-choice question: Which neurotransmitter affects how muscles learn and remember things?Acetylcholine. Acetylcholine is the sole member of its class of neurotransmitters. It is the major neurotransmitter linked to motor neurons and can be found in both the central and peripheral nervous systems. 14 Along with memory and learning, it affects how muscles move.
How are movements regulated by neurotransmitters?Dopamine is a neurotransmitter that affects how we move and how we stand. Additionally, it modifies mood and is essential for both dependence and reinforcement. Muscle rigidity characteristic of Parkinson's disease is brought on by dopamine depletion in some areas of the brain.
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what ancient society we studied in this class produced stamp seals with images of animals like water buffaloes, tigers, and elephants, accompanied with glyphs that have never been deciphered?
Pashupati Seal of Harappan civilization from Mohenjo Daro produced stamp seals with images of animals like water buffaloes, tigers, and elephants.
A seal is a tiny, portable artifact that can be fashioned of a variety of materials, including stone, metal, bone or ivory, and various synthetic pastes.
The Pashupati Seal of the Harappan civilization from Mohenjo Daro is the most well-known seal. A seal-shaped figure is in the center, sitting cross-legged, surrounded by various animals, including an elephant, a tiger, a rhino, and a buffalo to its right.
Commercial uses for these seals included making clay tags for sacks that carried goods to various locations and sealing the mouths of jars by pressing the seals against soft clays. These seals were also employed in trading activities.
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↓ please help asap! ↓
All of the following are negative consequences of enhanced greenhouse gas effect EXCEPT.
1) decreased temperatures
2) increased UV insolation
3) melting glaciers and ice caps
4) increasing sea levels
All of the following are negative consequences of enhanced greenhouse gas effects except melting glaciers and ice caps as it is a part of a positive feedback loop.
This positive feedback loop, which also actively raises temperatures, especially in the Arctic areas, has a substantial impact on the local ecology.
In comparison to other planets, the earth's temperature is one of its most striking and distinctive features. There are many different biological forms on the globe, and they all survive. The current increase in global warming on Earth is a result of a number of factors, including human activity, industrial waste, and trapped greenhouse gases.
Global warming has caused the ice sheets to begin to melt. As the white snow sheets melt away, the black ocean water, rocks, and flora hidden behind them are more easily seen; this phenomenon is regarded to create a positive feedback loop. Since the ice sheets are white, most of the incident light is reflected when they melt. The local ecology is significantly impacted by this positive feedback loop, which also actively elevates temperatures, particularly in the Arctic regions. Darker ocean water has a tendency to absorb more radiation, which boosts temperatures even more and speeds up global warming.
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Which ventilation allows warm air to escape while drawing in fresh, cooler air?
O Active
O Passive
O Natural
O Automatic
Passive ventilation allows warm air to escape while drawing in fresh, cooler air.
The correct option is B.
What is ventilation?Air is moved through the conducting tubes between both the lungs and the atmosphere during ventilation, often known as breathing. Pressure gradients created by the diaphragm or thoracic muscles flexing cause the air to travel through the channels.
Why is ventilation important biology?To keep the gradients in gas concentration in the alveoli, a breathing system is required. The concentration of carbon dioxide and oxygen between both the blood and the alveoli causes gas diffusion.
What differentiates ventilation from respiration?The processes of respiration and metabolism are separate. Physiologic respiration involves the exchange of gases in the cells and the alveoli (external respiration). Mechanical ventilation involves the movement of air (internal respiration).
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The main function of prop roots in mangroves is to
A. aerate the plant
B. produce and store food
C. keep mangroves upright
D. absorb water far below the earth
what information could be obtained from wolf scat? a. dna profiles b. vegetation preference c. presence of arthritis d. amount of urea e. time since last meal
DNA profiles could be obtained from wolf scat. DNA profile can inform a scientist about the origins of the sample's DNA, including whether it came from a man, woman, or any other type of organism.
DNA profiling is the process of obtaining a particular DNA pattern, or profile, from an individual or a sample of body tissue.
Human DNA profiles can be used to establish parentage or determine the source of a DNA sample from a crime scene.
The following purposes of DNA profiling include identifying the likely source of a bodily fluid sample connected to a crime or crime scene and revealing family links.
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an organism that thrives in the desert does not do well in a tropical rainforest. when there is plenty of water, shouldn't the organism do even better? explain.
Since these organisms are well adapted to the desert, putting them in a tropical rain forest where there is more than enough water for them will have the opposite effect of what would happen if more water were applied: it will have a negative impact.
Any organic, living system that performs as a standalone unit is referred to as an organism. All living things are made up of cells. Taxonomy separates species into protists, bacteria, and archaea, which are unicellular microorganisms, or multicellular animals, plants, and fungi.
A living item is considered an organism if it has an organized structure, is capable of responding to stimuli, can reproduce, grow, and can adapt to its environment. Therefore, every animal, plant, fungus, protist, bacterium, or archaeon found on Earth would be considered an organism.
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two 6-base sequences are present in bacterial promoters: tataat (located 10 nt upstream from the start site) and ttgaca (located 35 nt upstream from the start site). what is the significance of the fact that these two base sequences are different?
The significance of these two base sequences is that both the location of start site and the direction of transcription can be established.
What are the base sequences?
The order of the nucleotides composing the alleles within a DNA or RNA molecule is indicated by a series of bases denoted by a set of five different letters, which is known as a nucleic acid sequence. Sequences are often presented according to convention from the 5' end to the 3' end. The sense strand is used for DNA.
What are bacterial promoters?
Conserved DNA regions called bacterial promoters are crucial for the start of transcription. When we think of the classic paradigm, we typically picture promoters in intergenic areas upstream of genes enlisting RNAP holoenzyme to start transcription in one direction, leading to the production of an mRNA.
Hence the significance of these base sequences is to know the the location of start site and direction of transcription.
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in a diploid individual, one chromosome carries f and b genes, and the homologous chromosome carries different forms (alleles) of these same genes, f and b. see the image below for an illustration of the diploid, the original cell at the start of meiosis. if there is no crossover of the non-sister chromatids during the early phases of meiosis, the genotypes of the resulting gametes will be:
The resulting genotype would be fB, fB, Fb, Fb if no crossing over of non-sister chromatids occurs during the early stages of meiosis
Homologous recombination is the genetic outcome of a physical exchange between two aligned identical DNA regions on two distinct chromosomes or on the same chromosome (HR). Numerous markers surround the exchange region, and HR is present on the majority of homologous chromosomes.
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Would the damaged cells in the lymph nodes be immune cells or breast cells?
Immune cells
Breast cells
Answer: I think the immune system due to it being an highway for the immune system and is important for it.
Explanation: Yea i think immune possibly.
Answer:
immune would be the correct answer.
Explanation:
plato
how does taste work? what type of signaling is it? long distance? short distance? contact dependent? a mix?
The taste buds are peripheral sensory organs that have the ability to respond to various sapid chemicals. These organs transmit by synapses between taste cells and primary afferent sensory fibers to afferent nerves. Signals of taste begin as soon as food particles are recognized by the receptor protein on taste bud cells.
What are the different kinds of signaling?
• Paracrine signaling/ short distance signaling
• Autocrine signaling
• Endocrine signaling/ long distance signaling
• And Direct contact
These are the 4 basic kinds of signaling found between cells.
Therefore taste bud signaling would be a short distance signaling as they communication between cells is quick and near.
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which cells of the pancrease secrete insulin? which cells secrete glucagon? what are the effector cells for each of these hormones?
The pancreatic β-cell plays a key role in glucose homeostasis by using secreting insulin, the simplest hormone that is able to lower blood glucose awareness.
Glucagon is a peptide hormone secreted from the alpha cells of the pancreatic islets of Langerhans.
Even as the beta cell produces insulin, the most effective blood glucose-reducing hormone of the body, the alpha cell releases glucagon, which elevates blood glucose. under physiological situations, these mobile kinds have an effect on each other in a paracrine manner.
There are 3 basic styles of hormones: lipid-derived, amino acid-derived, and peptide. Lipid-derived hormones are structurally much like ldl cholesterol and include steroid hormones which include estradiol and testosterone.
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Read the article to learn more about the types of RNA, specifically mRNA and tRNA. Use the information to answer the following question.
RNA
Explain the roles of mRNA and tRNA in protein synthesis.
The messenger RNA or mRNA is a transcription molecule that carries the information of the DNA gene sequence to be used as a template to generate a polypeptide chain, while the transfer RNA or tRNA acts during translation to transport amino acids to the site of protein synthesis.
What is mRNA?The messenger RNA (mRNA) is a sequence obtained from the process of transcription which is complementary to the DNA gene sequence and serves to transport the genetic information from DNA to proteins. Moreover, the transfer RNAs (tRNAs) carry specific amino acids that are linked to the anticodon sequence and they are used during translation in the ribosomes.
Therefore, with this data, we can see that tRNA and mRNA are fundamental during protein synthesis.
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The messenger RNA or mRNA is a transcription molecule that carries the information of the DNA gene sequence to be used as a template to generate a polypeptide chain, while the transfer RNA or tRNA acts during translation to transport amino acids to the site of protein synthesis.
Explanation:
edge 2023
an enzymatic weight-gain supplement claims to help users digest all carbohydrates in fruits and vegetables. what key enzyme would you hope to see on the label?
An enzymatic weight-gain supplement claims to help users digest all carbohydrates in fruits and vegetables. Cellulase enzyme is present.
What is cellulase ?Cellulase (systematic name 4—D-glucan 4-glucanohydrolase) is any of a number of enzymes that catalyse cellulolysis, the breakdown of cellulose and some related polysaccharides, and is primarily produced by fungi, bacteria, and protozoans.
Endohydrolysis of (14)-D-glucosidic linkages in lichenin, cereal -D-glucan, and cellulose
The term is also applied to any naturally occurring combination or complex of numerous such enzymes that break down cellulosic material sequentially or cooperatively.
Cellulases convert the cellulose molecule into shorter polysaccharides and oligosaccharides, as well as monosaccharides (or "simple sugars") like -glucose. Because it makes a key plant component usable for food and use in chemical reactions, cellulose breakdown has significant economic significance. The 1,4-D-glycosidic bonds in cellulose, hemicellulose, lichenin, and cereal -D-glucans are hydrolyzed in this particular process. Compared to the breakdown of other polysaccharides like starch, the breakdown of cellulose is particularly challenging because the molecules of cellulose bind tightly to one another.
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defense of the body against a particular pathogen is provided by a) innate immunity. b) adaptive immunity. c) immunological surveillance. d) skin defenses.
The body's natural defenses against all disease types are known as innate immunity.
The innate, or nonspecific, immune system is one of vertebrates' two main immune defense systems, together with the adaptive immune system. Innate immunity is the oldest and most common immune response in plants, fungi, insects, and early multicellular animals in terms of evolutionary defense mechanisms (see Beyond vertebrates).
The following are some of the innate immune system's main responsibilities:
The complement cascade is activated to identify bacteria, excite cells, and promote clearance of antibody complexes or dead cells by producing chemical factors, such as chemical mediators referred to as cytokines.The adaptive immune system is triggered by antigen presentation and functions to identify and destroy foreign compounds in organs, tissues, blood, and lymph.To know more about natural defenses
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