The parasites which are usually found in stools look like worms and are mainly roundworms, pinworms etc.
There are several parasites which can be present in the intestines as they basically feed off our body. Worms which are present in our gut eventually happen to pass through the digestive system and get excreted out of our body through the stool or feces. Even if we are not showing any symptoms, we can still find signs of worms in our stool.
The worms which are present in the human feces can take a number of shapes and appearances. For roundworms, we will find pieces of worms in our feces. In the case of pinworms, we will be able to see thin, white colored worms which happen to appear like pieces of thread.
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What is the pathway of the cardiac conduction system?
The electric impulse travels from the sinus node to the atrioventricular node (additionally referred to as AV node).
There, impulses are bogged down for a completely brief period, then keep down the conduction pathway thru the package deal of His into the ventricles. The conduction system includes specialized coronary heart muscle cells, located in the myocardium. There is a skeleton of fibrous tissue that surrounds the conduction device which may be visible on an ECG. Dysfunction of the conduction device can reason abnormal coronary heart rhythms consisting of rhythms which are too speedy or too slow. he cardiac conduction system (CCS) (additionally referred to as the electric conduction device of the coronary heart) transmits the alerts generated with the aid of using the sinoatrial node – the coronary heart's pacemaker, to reason the coronary heart muscle to contract, and pump blood via the body's circulatory system.
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how did the structure of dna reveal how it stored information?
The structure of DNA revealed how it stored information through its double helix shape and the sequence of nucleotides that made up the strands. The DNA molecule consists of four types of nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G).
Two complementary strands of nucleotides make up the double helix structure of DNA, which is joined by hydrogen bonds between the bases of the nucleotides. Cytosine pairs with guanine, while adenine pairs with thymine. The DNA can properly and effectively reproduce itself thanks to base pairing, guaranteeing that the genetic information is passed on to the next generations.
DNA's nucleotide sequence contains the instructions needed to create and maintain an organism. Genes are sections of DNA that hold the blueprints for creating particular proteins. The amino acid sequence of the protein that a gene codes for depends on the nucleotide sequence of that gene. The genetic code can be altered by mutations in the DNA, which can modify the structure and function of proteins. These changes can have a substantial impact on the traits and health of an organism.
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The angiosperm life cycle undergoes an alternation of generations - one multicellular stage is haploid and another multicellular stage is diploid. Based on your knowledge of the angiosperm life cycle, can you categorize the following structures as haploid, diploid, or something else?endosperm, female gametophyte, sperm cell, flower, sporophyte, male gametophyte, zygote, egg cell
Two cells make up each pollen grain: one reproductive cell that will split into two sperm and the other cell that will develop into the pollen tube. Diagram depicting the life cycle of
The reproductive system is what?
the reproductive system explained A reproductive organs is a grouping of organs and mechanisms that aid in the creation of new, closely related young living beings. Males and females both have a reproductive system, which is a group of organs that generates gametes and sex hormones.
What connection exists between sexual and reproductive processes?
One of the basic functions of the living world is reproduction. The diverse reproductive systems of both human males and females enable sexual reproduction, a more complex and highly evolved process. The gametes (sperm and ova) are formed by the human reproductive system, which also feeds and helps them fuse.
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the structural framework of nucleotide polymers consisting of sugars and phosphate groups linked by phosphodiester bonds.A. PurineB. double helixC. nitrogenous baseD. sugar phosphate backbone
The structural framework of nucleotide polymers consisting of sugars and phosphate groups linked by phosphodiester bonds is the sugar-phosphate backbone. (option D)
The sugar-phosphate backbone is a repeating structural unit that forms the basis of DNA and RNA molecules. It consists of alternating sugar and phosphate groups linked by phosphodiester bonds. The sugar component of the backbone is either deoxyribose (in DNA) or ribose (in RNA). The phosphate groups link the sugars together through phosphodiester bonds, creating a chain-like structure.
The nitrogenous bases, which include purines and pyrimidines, are attached to the sugar component of the backbone and project inward towards each other in the center of the molecule, forming the double helix shape of DNA. The sugar-phosphate backbone provides stability and structure to the DNA molecule, allowing it to store and transmit genetic information.
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which type of muscle tissue contain striations when viewed through a microscope
The type of muscle tissue that contains striations when viewed through a microscope is skeletal muscle tissue.
Skeletal muscle tissue is the muscle tissue that is attached to bones and is responsible for voluntary movement. The striations that are visible in skeletal muscle tissue are due to the organized arrangement of the contractile proteins, actin, and myosin, within the muscle fibers.
These striations give skeletal muscle tissue its characteristic striped or striated appearance when viewed under a microscope. In contrast, smooth muscle tissue and cardiac muscle tissue do not typically exhibit striations when viewed through a microscope.
Skeletal muscle tissue is composed of long, cylindrical cells called muscle fibers. These fibers are multinucleated, meaning they contain multiple nuclei within each cell, and are surrounded by connective tissue that forms tendons, which attach the muscle to the bone.
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the fossil of what reptile was used to support the idea of a supercontinent gondwana? multiple choice pterosauris mesosaurus serpentina glossopteris
Mesosaurus fossils were used to support the theory that Gondwana was a supercontinent.
Why do biologists examine fossils?Body fossils are examples of once-living objects that provide information about where and when life existed. Due to the fact that they preserve a brief period of time when an organism was still alive, trace fossils are useful because they "animate" the extinct animals or plants.
What is the discussion of fossil biology?A fossil is an organism or an organism's activity that has been preserved as a cast, impression, or mold that has been partially or completely calcified. In the lack of intact soft tissues, a fossil provides palpable, physical proof of ancient life and has served as the cornerstone of the idea of evolution.
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What organism is found in freshwater habitats and can infect a person if they inhale mist or droplets?
a. Legionella
b. Naegleria fowleri
c. Salmonella typhi
d. E. coli
The organism that is found in freshwater habitats and can infect a person if they inhale mist or droplets is (a) Legionella
What is Legionella?
Legionella is a type of bacteria that is commonly found in freshwater environments such as lakes, rivers, and streams. It can also be present in man-made water systems, including cooling towers, hot tubs, and plumbing systems.
Legionella is commonly found in natural and man-made water sources, such as lakes, rivers, cooling towers, hot tubs, and plumbing systems. The bacteria can survive and multiply in warm water environments, particularly those that are not properly maintained or cleaned.
Legionella bacteria are known to cause a type of pneumonia called Legionnaires' disease, which can be contracted by inhaling mist or small droplets of water that are contaminated with the bacteria. The disease can be severe and even life-threatening, particularly for individuals with weakened immune systems or underlying medical conditions.
Preventive measures such as proper maintenance and cleaning of water systems and regular testing for Legionella are important in preventing the spread of the disease. If a person is suspected to have contracted Legionnaires' disease, prompt medical attention is necessary for diagnosis and treatment.
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what percentage of cancers come from acquired genetic mutations of the tumor suppressor gene?
Up to 5% to 20% of cancers come from acquired genetic mutations of the tumour suppressor gene.
Cancer-suppressing DNA. These traits offer protection. They typically prevent cell development by:
- observing the rate at which cells proliferate to produce new cells
- repairing faulty DNA
- regulating the time of cell death
A tumour suppressor gene mutation causes uncontrollable cell growth. Eventually, they might even develop growth. Tumour suppressor genes include p53 or TP53, BRCA1, and BRCA2.
Hereditary breast or ovarian tumours are more likely to strike women with germline abnormalities in the BRCA1 or BRCA2 genes than they are to strike men with these mutations. In both males and women, they raise the chance of melanoma and pancreatic cancer.
The p53 or TP53 gene is the one that is most frequently altered in cancer patients. Over 50% of tumours have a damaged or absent p53 gene. Most abnormalities in the p53 gene are inherited. Although germline p53 mutations are uncommon, those who have them have a greater chance of getting a wide range of cancers.
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what can be considered the source of life and is also one of the most important nutrients found in food?
The most crucial nutrient that a human requires is certainly water. Without water, a human can only last a few days.
What are nutrients ?Nutrients, which are chemicals derived from food, are needed by all living organisms in order to produce energy, develop, grow, and reproduce. Following digestion, nutrients are disassembled into their component parts for use by the body. The two main types of nutrients are micronutrients and macronutrients.
What makes nutrition important?A nutrient is a chemical needed by the body in survival, development, and reproduction, according to the Health Organisation. In other words, micronutrients provide us with energy and enable our bodies to carry out necessary tasks. Nutrients are essential for life and are needed by every organism on our planet!
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Question 30. Which of these statements does not offer support for the scientific importance of the schuenzel et al study?schuenzel et al submitted. Docx few hypersaline sediment microcommunities have been sampled. Bacteria communities were sampled temporally (over multiple years) and spatially (over multiple locations). Bacteria were identified using the gene 16s rrna. Microbial communities play a major role in the ecosystem including contributing to nutrient cycling
Biology is the study of living things and how they relate to one another and to other elements of their environment.
This is crucial since, according to Cain et al., the definition of environment is the group of abiotic, or non-living, species that interact with live organisms, you can conclude that biology investigates energy to the extent that it is used by organisms.
According to research on rat learning and brain structure (Greenough et al., 1990; Wallace et al., 1992), early psychological exposure impacts the nervous system's development and determines a person's susceptibility to psychiatric problems later in life.
Learning organizes and reorganizes the brain, and various sections of the brain might be ready to learn at different periods. Learning alters the physical structure of the brain and structural changes affect the functional organization of the brain.
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which physiological response occurs first when a client experiences sudden hypovolemia caused by hemorrhage
When a client experiences sudden hypovolemia caused by hemorrhage, the first physiological response that occurs is the activation of the sympathetic nervous system.
What happens with hemorrhage?The sympathetic nervous system is responsible for the "fight or flight" response and helps the body respond to stress by increasing heart rate, constricting blood vessels, and increasing the release of adrenaline and other stress hormones. In response to hypovolemia, the sympathetic nervous system activates to increase cardiac output, which helps to maintain blood pressure and perfusion to vital organs.
In addition to sympathetic activation, other physiological responses occur in response to hypovolemia, including the release of the antidiuretic hormone (ADH), which helps the body retain water, and the activation of the renin-angiotensin-aldosterone system (RAAS), which helps to maintain blood pressure and fluid balance. However, the sympathetic nervous system response is the first and most immediate response to sudden hypovolemia caused by hemorrhage.
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which structures would be found in a bacterium, but not in a human cell?
Bacteria lack a membrane-enclosed nucleus, in contrast to eukaryotic (true) cells. A area of the cell known as the nucleoid is where the chromosome, a single continuous strand of DNA, is localized but not confined.
The presence of peptidoglycan, which is situated directly outside of the cell membrane, distinguishes the bacterial cell wall from that of all other organisms. An equal number of N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) residues alternate in the polysaccharide backbone that makes up peptididoglycan.
Many eukaryotic cell structures are absent from bacteria. They lack a nucleus, for instance. They also lack organelles that are attached to membranes, such chloroplasts and mitochondria. Bacterial cells have DNA that is distinct from eukaryotic cells.
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Correct Question:
What type of structures would be found in a bacterium, but not in a human cell?
what is oxyhemoglobin dissociation curve
The oxygen-hemoglobin dissociation curve shows the relationship between the quantity of oxygen bound to haemoglobin and the partial pressure of oxygen in the blood.
Several physiologic factors, including pH, carbon dioxide (CO2), temperature, and 2,3-Disphosphoglycerate, are accountable for shifting the curve left or right. The impact of temperature on the curve is fairly simple. At greater temperatures, oxygen unloading is preferred, resulting in a rightward shift.
The oxygen dissociation curve is a graph that depicts the percentage saturation of oxyhemoglobins at different oxygen partial pressures. The curve depicts the oxyhaemoglobin and haemoglobin equilibrium at different partial pressures. The partial pressure of oxygen in the alveoli is very high.
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where in the organelle are these molecules stored before they are used in photosynthesis?
In plants and algae, photosynthesis occurs primarily in chloroplasts. Within the chloroplasts, there are different compartments where various molecules are stored before they are used in photosynthesis.
Here are some examples: Pigments, such as chlorophyll, carotenoids, and phycobilins, are stored in the thylakoid membranes, which are a series of flattened, interconnected sacs within the chloroplasts.
These pigments capture light energy and transfer it to other molecules to drive photosynthesis. Enzymes involved in the light-dependent reactions of photosynthesis are also located in the thylakoid membranes.
ATP synthase, an enzyme that produces ATP, is located in the thylakoid membranes as well. Starch, a storage molecule that is produced during photosynthesis, is stored in the stroma, which is the fluid-filled region surrounding the thylakoid membranes.
Overall, the storage locations of molecules involved in photosynthesis within chloroplasts are highly organized and compartmentalized. This helps to ensure that the reactions of photosynthesis proceed efficiently and that the necessary molecules are available when they are needed.
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carbohydrates provide living cells with a major source of what?
Answer:
vit
amin
Explanation:
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nutrient the body uses to build and maintain cells and tissues and provide energy; may also act as hormones or enzymes.
The nutrient that the body uses to build and maintain cells and tissues, and provide energy, and may also act as hormones or enzymes, is called "protein."
Proteins are made up of long chains of amino acids and are essential for the growth and repair of tissues, as well as for the production of enzymes and hormones that regulate various bodily processes. Protein-rich foods include meat, fish, poultry, eggs, dairy products, beans, and nuts.
Protein provides numerous benefits to the body. Here are some of the most important benefits of protein:
Building and repairing tissues: Protein is essential for building and repairing tissues in the body. This is particularly important for athletes, bodybuilders, and people recovering from injuries.
Muscle development: Protein is necessary for muscle development and maintenance. It provides the building blocks needed to support muscle growth and repair.
Overall, protein is a crucial nutrient that provides numerous benefits to the body, and it is essential for overall health and wellbeing.
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what major paired vessels supply oxygenated blood to the head and neck regions? specify veins or arteries.
The major paired vessels that supply oxygenated blood to the head and neck regions are the carotid arteries and the jugular veins.
The carotid arteries are two major blood vessels that originate in the chest and supply oxygenated blood to the head and neck regions. There are two carotid arteries, one on each side of the neck, and they each divide into two branches: the internal carotid artery, which supplies blood to the brain, and the external carotid artery, which supplies blood to the face, neck, and scalp.
The jugular veins are also paired vessels that drain deoxygenated blood from the head and neck regions back to the heart. There are two jugular veins, one on each side of the neck, and they run alongside the carotid arteries. The internal jugular vein is the larger of the two and drains blood from the brain and the deep tissues of the neck and face, while the external jugular vein drains blood from the superficial tissues of the face and neck.
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A potent inhibitor of platelet aggregation released by endothelial cells is:
A. Epinephrine
B. Prostacyclin
C. Ristocetin
D. Thromboxane A2
Option A is Correct. Epinephrine is a powerful inhibitor of platelet aggregation produced by endothelial cells. Despite not being an aggregating agent, pinephrine potentiates human platelet activation.
Nitric oxide (NO), which is released from endothelial cells, prevents platelet aggregation by causing soluble guanylyl cyclase (sGC) to be activated. This causes an increase in cGMP and the activation of protein kinase G (PKG), which phosphorylates downstream proteins, lowers Ca2+ levels, and inhibits integrins.
As cyclo-oxygenase is a crucial enzyme in platelet prostaglandin processing, aspirin prevents platelet aggregation by irreversibly inactivating it, whereas other nonsteroidal anti-inflammatory medications including sulphinpyrazone produce reversible and dose-dependent suppression of the same enzyme.
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in what ways can mitochondria adapt to the changing needs of a cell?
A) They can change their location;C) They can change their number;D) They can change their shape; these are the ways that mitochondria adapt to the changing needs of a cell.
Mitochondria are highly dynamic organelles that can adapt to the changing needs of a cell in a number of ways. For example, they can change their location by moving to areas of the cell that require more energy, such as near the nucleus or the cell membrane. They can also change their internal structure, such as by forming more or fewer cristae. Additionally, mitochondria can change their number by either fissioning and dividing into two new mitochondria or merging with other mitochondria. Likewise, mitochondria can also change their shape in response to the demands of the cell. Finally, mitochondria are able to carry out glycolysis, which is the breakdown of glucose to produce energy. This ability to carry out glycolysis enables the mitochondria to provide a cell with energy when energy demands are high.
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complete question:In what ways can mitochondria adapt to the changing needs of a cell?
Choose one or more:
A) They can change their location.
B) They can change their internal structure.
C) They can change their number.
D) They can change their shape.
E) They can carry out glycolysis.
Which of the following evolutionary innovation of seed plants enabled them to outcompete ferns and other seedless plants that dominated through the end of the Carboniferous period?a. heterosporyb. reduced, dependent gametophytesc. vascular systemsd. flowers
The evolutionary innovation of seed plants that enabled them to outcompete ferns and other seedless plants that dominated through the end of the Carboniferous period is: (b) reduced, dependent gametophytes.
Carboniferous period is the period of the geological time scale that lasted from 359.2 to 299 million years ago during the late Paleozoic Era. It lies between the Devonian and Permian period. The species dominating during this period were lycopods, sphenopsids, seed ferns, true ferns. etc.
Gametophyte is the stage of the gamete production (therefore haploid) in the species exhibiting alternation of generations in their life cycle. This phase is responsible for producing the zygote. This fertilization property helped gametophytes to outcompete the ferns.
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The dendrites are the part of the ________, where signals from neighboring neurons are received.
a) terminal buttons
b) axon
c) neuron
d) synapse
The dendrites are the part of the synapse where signals from neighboring neurons are received. option d)
A synapse is a structure in the nervous system that allows a neuron (or nerve cell) to send an electrical or chemical signal to another neuron or the target effector cell.
Synapses are necessary for the transfer of nerve impulses from one neuron to the next. Neurons are specialized in sending messages to specific target cells, and synapses are the means by which they do so. The plasma membrane of the signal-passing neuron (the presynaptic neuron) comes into close contact with the membrane of the target (postsynaptic) cell at a synapse.
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Why is the U.S. Constitution important?
It is the supreme law of the land that creates three branches of government.
It is a declaration by the colonies that they refuse British rule.
It is a compromise between New Jersey and Virginia land claims.
It is a law written by Federalists to prevent Loyalists from gaining power.
which of the mrna processing events occurs in the nucleus of human cells?
All four of these activities are involved in how mRNA is processed. The 5 cap and poly tail are both introduced. Exons and introns make up the modern mRNA. By means of several enzymes, the introns are excised and the exons are spliced. So, option E is correct.
Before being carried from the nucleus to the cytoplasm for translation, the primary transcript, also called pre-mRNA, goes through a number of modifications, including capping, splicing, and polyadenylation.
In capping, a 7-methylguanosine cap is added to the pre-mRNA molecule's 5' end in order to prevent degradation and make it easier for the translation machinery to recognize it.
The procedure of splicing involves the removal of introns from the pre-mRNA sequence and the joining of the exons. The spliceosome, a combination of RNA and protein molecules, performs this function.
A poly(A) tail is added to the 3' end of the pre-mRNA molecule during polyadenylation, which is important for its stability and transportation to the cytoplasm.
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The complete question is:
Which of the mRNA processing events occurs in the nucleus of human cells?
A) splicing of exons
B) excision of introns
C) poly-A tail addition
D) 5' cap addition
E) All of the above.
what is the most likely cause of wheezing and hives
Epinephrine: Anaphylaxis, a life-threatening condition brought on by severe acute allergic reactions, can occur. Infections are the most frequent reason for hives.
Hives, face, mouth, or throat swelling, shortness of breath, wheezing, vomiting, and low blood pressure are a few symptoms. Urticaria is frequently brought on by foods including eggs, almonds, and shellfish. Aspirin and certain antibiotics, particularly penicillin and sulfa, are common causes of hives. The common cold and other viral infections are among the illnesses that can cause hives. Typical causes include an allergy attack, an infection, or a physical obstruction like a tumour or an inhaled foreign object.
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Some farmers are removing hedges in order to increase the size of their fields. this means that the hawthorn bushes is decreasing. Suggest how removing hawthorn bushes will affect the size of the dunnock population?
Answer:
because of destruction of their habitat.
Explanation:
Removing hawthorn bushes will affect the size of the dunnock population because of destruction of their habitat
Only a producer can use the sun’s energy or chemical energy to
make food. true or false
Answer:
There are also bacteria that use chemical processes to produce food. They get their energy from sources other than the sun, but they are still called producers. This process is known as chemosynthesis, and is common in ecosystems without sunlight, such as certain marine ecosystems.
Explanation:
What kind of adaptation is a long neck on a tortoise? *A. StructuralB. BehavioralC. FunctionalD. Physiological
Shape, height, hue, and other physical characteristics are all examples of structural adaptations. So the correct option is A.
The Blanding's The structural adaptation of turtles and other reptile species is very obvious: their carapace. The turtle's carapace helps keep predators away from its delicate internal parts. In case of peril, the turtle can also use it as a cover by hiding its head and flippers. Organisms use behavioral changes to help them live. Bird migration and cries are two examples of behavioral changes. Evolution is the cause of adaptation. A species changes over a lengthy span of time through evolution.
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the soma of psuedounipolar neurons is found in the gray matter of the spinal cord. T/F
It is true that the gray matter of the spinal cord contains the soma of pseudounipolar neurons.
Where in the spinal cord can you find pseudounipolar neurons?A dorsal root ganglion houses a pseudounipolar neuron's cell body. After exiting the cell body and the ganglion of the dorsal root, the axon enters the dorsal root and divides into two branches. The central branch reaches the spinal cord's dorsal columns, where it joins with other neurons to form synapses.
Where are neurons' soma found?Image result The soma—also known as the tree trunk—is where the nucleus of the neuron is located, where the neuron's DNA is kept, and where proteins are made so that they can travel along the axon and dendrites. In both the brain and the spinal cord, there are various types of neurons.
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Of the taxa listed on the phylogeny, which is more closely related to bats?A. Turtles and birds are equally related to batsB. coelacanthsC. The rootD. Caecilians
The correct option is A; Turtles and birds are equally related to bats. Based on these considerations, turtles are currently widely accepted to be the most closely related extant taxa to archosaurs .
And, with less certainty, to be the most closely related extinct taxa to sauropterygians (e.g. Li et al., 2008; Müller & Tsuji, 2007), although the above. The relatedness of two species in a phylogenetic tree has a very specific meaning. If two species have a more recent common ancestor, they are more related;
if they have a less recent common ancestor, they are less related. A monophyletic taxon is one that includes the most recent common ancestor of a group of organisms as well as all of its descendants [as in (a)]. Such groups are sometimes referred to as holophyletic.
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What is the main function of epiglottis?
The main function of the epiglottis is to prevent food and liquid from entering the trachea (windpipe) during swallowing.
What is the epiglottis ?The epiglottis is a flap of tissue located at the base of the tongue, and it is attached to the entrance of the larynx (voice box). During swallowing, the larynx moves upward and the epiglottis folds back over the larynx, forming a seal that prevents food and liquid from entering the airway.
This allows the food and liquid to pass down the esophagus and into the stomach, while keeping the airway clear for breathing.
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