It is TRUE that cell is the smallest unit of life and can grow, reproduce, and perform certain basic functions.
The smallest component of all living things, including human tissue, that is capable of independent existence. The cell membrane, nucleus, and cytoplasm make up a cell's three basic structural components. The cell membrane, which encloses the cell, regulates the molecules that enter and exit the cell. The nucleus is a component of the cell that houses the nucleolus and the majority of the DNA. Most RNA is produced there as well. The fluid found inside a cell is called cytoplasm. The Golgi complex, the mitochondria, and the endoplasmic reticulum are among the additional minute cell components that are found there. Most chemical processes and protein synthesis take occur in the cytoplasm. More than 30 trillion cells make up the human body.
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The actual question is:
True, or False
Cell is the smallest unit of life and can grow, reproduce, and perform certain basic functions.
Phagocytosis, pinocytosis, and receptor-mediated endocytosis all involvea. the export of macromolecules.b. invagination of the plasma membrane.c. the intake of large particles.d. the intake of specific fluids by the cell.e. the presence of receptor proteins.
Phagocytosis, pinocytosis, and receptor-mediated endocytosis all involves
option b. invagination of the plasma membrane.
Endocytosis is the process by which particles that are too large to pass passively through the cell membrane are taken inside. Pinocytosis is the ingestion of liquid particles, whereas phagocytosis is the ingestion of large food particles. Large particles are transported across the cell membrane via receptor-mediated endocytosis, which employs specialised receptor proteins.
Phagocytosis is the process by which a cell extends its membrane and internalises a large particle, such as a bacterium. Similar processes, such as pinocytosis, involve the cell engulfing extracellular fluid droplets and absorbing any dissolved chemicals within them. Because the chemicals transported into the cell are specific ligands that could bind to the endocytosed receptors, receptor-mediated endocytosis is more selective.
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What is the skeletal system? Answer in
2-4 sentences, including the words
below:
bones
structure
movement
ligaments, cartilage, or tendons
What is a tube that carries air from the larynx to the lungs?
The trachea (windpipe) is the section of the lungs that continues below the larynx (LAIR-inks). The trachea's walls are coated with tough cartilage rings, which keep it open. To keep liquids and other items from entering the lungs, cilia that line the trachea pull them out of the airways.
the passageway that joins the bronchi with the voice box (larynx) (large airways that lead to the lungs). also referred to as a windpipe. It is an important respiratory system component. The trachea (windpipe) is the section of the lungs that continues below the larynx (LAIR-inks). The trachea's walls are coated with tough cartilage rings, which keep it open. To keep liquids and other items from entering the lungs, cilia that line the trachea pull them out of the airways.When you breathe in, air enters your lungs from your larynx. It then passes through your trachea and into your bronchi.
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thickened regions of circular muscle that function like valves to control the flow of contents at various points in the GI tract is called?
Sphincters are the thickened areas of circular muscle that act as valves to regulate the flow of contents at different points inside the gastrointestinal (GI) tract.
Muscle is a kind of tissue that can be found in various body parts and is in charge of generating force and movement. The body moves both voluntarily and involuntarily thanks to the cooperation of muscles, bones, tendons, and ligaments. Muscular system, smooth muscle, and pericardium are the three different types of muscle cells that make up the human body. Skeletal muscle, which is attached to bones, is in charge of voluntary movements like running and walking. Smooth muscle, which is present in the walls of blood vessels and organs, is what causes uncontrollable movements like the compression of the tummy during digestion. Blood is pumped throughout the body by cardiac muscle, which is located in the heart.
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How does the SA node generate an action potential?
The heart's intrinsic pacemaker, the SA node (SAN), generates spontaneous action potentials (APs) through a system of coupled oscillators whose common output initiates each normal heartbeat.
What activates an SA node?Autonomic nerve fibers regulate firing of the sinus node to initiate initiation of the subsequent cardiac cycle, thereby influencing heart rate
Where do action potentials generated at SA nodes propagate?Action potentials generated by the SA node propagate across the atria primarily by intercellular conduction at velocities of approximately 0.5 m/s.
How are action potentials triggered in SA nodules of heart?Cardiac action potentials originate from the sinus node high in the right atrium. The cell spontaneously depolarizes and initiates spontaneous depolarization of action potentials at a constant rate from the sinus node.
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Collecting vessels are formed by the convergence of several lymphatic ________ .
Answer:
capillaries
Explanation:
I hope this helps... :)
political attitudes, how much television people watch, and whether or not people get divorced are all influenced by
political attitudes, how much television people watch, and whether or not people get divorced are all influenced by socioeconomic status.
What is political attitudes?Political attitudes refer to the way in which individuals view and engage with the political system. This can include beliefs about the role of government, the effectiveness of political institutions, and the legitimacy of certain political ideas. Political attitudes can be affected by a variety of factors such as education, media, family, and personal experiences. Individuals from different backgrounds may have different political attitudes and values, which can lead to differences in how they view and engage with the political system. Political attitudes can also shape the way in which individuals participate in the political process, from voting to engaging in activism. By understanding the different political attitudes in society, we can better understand how to navigate the political system and create meaningful change.
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1 A. how is DNA Replicated
DNA replication occurs in three major steps which are the opening of the double helix and the separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
What is DNA replication?DNA replication is defined as the biological process of making two identical copies of DNA from a single original DNA molecule that occurs in all living organisms, serving as the most essential part of biological inheritance.
DNA replicates in the S phase of the cell cycle and begins at specific regions in the DNA called DNA replication 'origins'. Many proteins participate in DNA replication and the process is subject to a check by cell surveillance mechanisms called cell cycle checkpoints.
Thus, DNA replication occurs in three major steps which are the opening of the double helix and the separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
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Pollution: What's in the Citarum River?
What chemicals and objects are found in this river?.
Explain the relationship between mRNA, tRNA, and amino acids in the production of proteins.
The information about what protein needs to be created is carried by the mRNA (messenger RNA). Here, it is written which amino acid belongs where. Its tRNA (transport RNA)
What exactly is 'pure' protein?
The health effects of "pure" protein, whether it comes from animal or plant foods, are likely to be comparable, while the health consequences of the amino acid composition can vary. Some of the proteins in food are "complete," which means they have all of the more than twenty different kinds of amino acids required for the body to produce new proteins.
Why is protein important? What is it?
The body is made up of protein, which may be found in almost every organ, tissue, and body part, including muscle, bone, skin, and hair. It contributes to the production of hemoglobin, which transports oxygen in the blood, and enzymes, which drive numerous chemical reactions. You are made up of at least 10,000 distinct proteins, which also keep you that manner.
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In what ways do the macroscopic features of bacterial colonies differ than those of molds?
Mold colonies tend to be fuzzy, but bacterial colonies are often smooth. While germs exist in a range of hues, moulds are often white, grey, or green in appearance.
What kinds of bacteria colony are there?Bacterial colonies can be classified as round, asymmetrical, filamentous, spindle, rhizoid, or concentric based on their shape. They are classified as whole, lobate, undulate, filaments, and irregular based on the form of their edge.
How can a bacterial colony be recognised?Each distinct colony contains a single cell membrane or group that has undergone recurrent division. The resultant cells have gathered to create an observable patch due to being retained in one location. The majority of bacterial colonies have a colour that is either white or creamy yellow and have a roughly round shape.
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waves of muscular contractions that propel food along the gastrointestinal tract are called ___
Waves of muscular contractions that propel food along the gastrointestinal tract are called Peristalsis
What exactly is peristalsis, and where does it occur?Peristalsis is the wave-like movement of the muscles that lining your digestive tube. Peristalsis is the movement of food through your digestive system. It begins in your throat when you swallow and continues through your oesophagus, stomach, and intestines as you digest.
Motilin is a hormone that is secreted cyclically during fasting by entero-endocrine cells (Mo cells) in the upper small intestine. Motilin increases gastric and small intestinal motility, causing undigested food to migrate into the large intestine.
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what happens if one testicle is larger than the other
It is not uncommon for one testicle to be slightly larger than the other, and in most cases, it is not a cause for concern. However, if the difference in size between the two testicles is significant.
One of the most common causes of testicular asymmetry is a varicocele, which is a swelling of the veins in the scrotum that can cause one testicle to be larger than the other. Varicoceles can affect blood flow to the testicle, leading to decreased fertility and possibly testicular pain. Another possible cause of testicular asymmetry is a hydrocele, which is a buildup of fluid in the scrotum that can cause one testicle to appear larger than the other. Hydroceles are usually painless and can be treated with surgery if they become bothersome. In rare cases, testicular asymmetry can be a sign of testicular cancer. Testicular cancer typically causes a painless lump or swelling in one testicle, which may be accompanied by other symptoms such as testicular pain or discomfort, a feeling of heaviness in the scrotum, or a dull ache in the lower abdomen or groin. It is important to see a doctor if you notice any of these symptoms or changes in the size or shape of your testicles. In summary, while mild differences in testicular size are normal, significant asymmetry may be a sign of an underlying medical condition, such as a varicocele, hydrocele, or testicular cancer.
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as the evolutionary biologist in charge of a student project to create a phylogenetic tree that better clarified the evolutionary relationships between the species listed in the accompanying figure, you asked the students to pose a question that would be a logical first step to better understand the evolutionary history of the group. which student question would be the best starting point?
b) Can we evaluate evidence to determine the relationships of species D, E, and F? evolutionary history of the group
Evolutionary history refers to the development and diversification of life on Earth over billions of years, as organisms have evolved and adapted to changing environments through natural selection and other processes. It encompasses the genetic, morphological, and behavioral changes that have occurred in different species and lineages over time, as well as the relationships and branching patterns between different groups of organisms. By studying the evolutionary history of different organisms, scientists can gain insight into the processes that have shaped life on Earth, including the role of major events like mass extinctions and the emergence of new evolutionary innovations.
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The full question was :
As the evolutionary biologist in charge of a student project to create a phylogenetic tree that better clarified the evolutionary relationships between the species listed in the accompanying figure, you asked the students to pose a question that would be a logical first step to better understand the evolutionary history of the group. Which student question would be the best starting point?
a) Can we investigate the genetic relationships between species A and G?
b) Can we evaluate evidence to determine the relationships of species D, E, and F?
c) Can we compare DNA evidence for taxa B and C?
d) Can we evaluate the DNA sequence of taxon G?
e) x
are cyanobacteria named for their ability to degrade areas comtaminated with cyanide?
Answer: Cyanobacteria are of interest (and are named for) their ability to degrade areas contaminated with cyanide.
Explanation:
Answer:
Big no
Explanation:
Cyanobacteria are not named for their ability to degrade areas contaminated with cyanide. The name cyanobacteria comes from the blue-green pigmentation of these microorganisms, which is due to the presence of a blue-green photosynthetic pigment called chlorophyll. Cyanobacteria are capable of carrying out photosynthesis and producing oxygen, much like green plants, but they are not known for their ability to degrade areas contaminated with cyanide.
just tell me if you kinda confuse
ALLEN
in what way do megasporangia differ from microsporangia?
In contrast to microsporangia, which generate spores that grow into male gametophytes, megasporangia reproduce asexually that become female gametophytes.
What in biology is a megasporangium?Plants' female reproductive system includes the megasporangium. It might also be referred to as an ovule. It is made up of an integument and a nucellus. After maturation, the ovule might change in size and form.
What is the popular name for Megasporangia?- The megasporangium, sometimes referred to as the ovule, is a tiny structure that is joined to the placenta by a stalk called a funicle. A area known as the hilum is where the ovule's body and funcle connect. .
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specialized lymphatic capillaries located in the villi of the small intestine are the?
The answer is enterocytes. Enterocytes, sometimes referred to as absorptive cells, are the main cells of the small intestine that are in charge of absorbing nutrients, electrolytes, and water.
Due to the existence of microvilli, which increase the surface area and aid in the absorption process, they are located in the small intestine lining and are specifically designed for absorption. Enzymes, hormones, and mucus that aid in food digestion are also secreted by enterocytes. It is the job of the enterocytes, specialized cells found in the small intestine, to absorb nutrients from food particles that have been digested. Aside from these functions, they also transport ions and electrolytes, secrete digestive enzymes, and take part in the immunological response.
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Livestock are mammals produced on farms and ranches for food and other
purposes.
True
False
Livestock are mammals produced on farms and ranches for food and other purposes is referred to as a true statement.
What is a Livestock?This is used to describe the domesticated animals which are raised in an agricultural setting to provide labor and produce diversified products for consumption such as meat, eggs etc.
In this scenario we were told that the animals are produced om the farm for food and other purposes which therefore means that true is the correct choice.
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Consider a signal transduction pathway that utilizes cAMP as a second messenger to activate PKA (Protein Kinase A). Which of the following situations will result in the cellular response?
(a) The G protein releases GDP and binds to GTP
(b) The target protein (adenylyl cyclase) is inactive
(c) The regulatory subunits of PKA (Protein Kinase A) are bound to the catalytic subunits
(d) The appropriate G protein is bound to GDP
Think of a signal transduction pathway that activates PKA by using cAMP as a second messenger (Protein Kinase A). Which of the subsequent circumstances will cause the cellular response is
The correct option is a
The situation that will result in the cellular response in a signal transduction pathway that utilizes cAMP as a second messenger to activate PKA (Protein Kinase A) is option (a) - The G protein releases GDP and binds to GTP.
When an extracellular signal binds to a G protein-coupled receptor, the receptor activates a G protein, which then releases GDP and binds to GTP. The GTP-bound G protein then activates adenylate cyclase, which converts ATP into cAMP. The cAMP then binds to and activates the regulatory subunits of PKA, causing them to dissociate from the catalytic subunits. The free catalytic subunits of PKA are then able to phosphorylate target proteins and initiate the cellular response.
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Cellular processes are occurring in our bodies every second of every day. There are many mechanisms behind the methods of cellular transport. Your task is to read each case summary and determine a suspect based on evidence.
Possible Suspects: Osmosis Sally, Maggie Diffusion, Jenny Active Transport
Crime Description:
The suspect was reported to have quietly entered “CellBuck’s Coffee House” which was sparsely populated on that foggy Saturday morning on March 17, 2012. The first witness reported that the suspect glided into the establishment like a ghost. The suspect was reported to have floated about the room spreading her aromatic charm. The suspect is accused of stealing Mike Hematocyte’s wallet as she charmed him with her hypnotic aroma. The men that she touched during this experience were reported to have been so mesmerized that they could not recall her features. The female witness stated that just before she left, it was as if she was a magician floating through the air as she disappeared from the establishment back into the foggy mist.
The suspect based on evidence is Maggie Diffusion.
What evidence proves that?
The description of the suspect "gliding into the establishment like a ghost" and "floating about the room spreading her aromatic charm" suggest a passive and effortless movement, which is consistent with the mechanism of diffusion.
We know that during diffusion, substances move from an area of high concentration to low concentration, without the use of energy.
Another evidence is the fact that the men who were touched by the suspect were reported to have been "mesmerized" and "could not recall her features" which also suggests a chemical or biological process at work, which could also be related to diffusion of a substance that affected their perception.
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the carrying capacity for a population of frogs in a rainforest ecosystem is 840 frogs, and the maximum rate of increase for this population is 1.0 per individual per year. using the logistic population growth model, what is the approximate population growth rate for 212 frogs?
Counting deaths at the same pace, a population of 275 squirrels would grow by around 239 squirrels every year.
The rate of per capita growth slows as a population approaches the carrying capacity, a limit imposed by the environment's limited resources, according to the formula: dN/dT=rN1-N/K. N = 212, k = 840, and r = 1 are taken as givens. Finding: After adding value, r=? rN1-N/K=dN/dT, where dN/dT = 1 x 212 1-212/840 As a result, dN/dT=158.57 (approx). Final response: This is the correct option (c). It follows that the population will grow by 158 frogs annually. The growth rate (r), where "n" is the number of years in the period, is calculated by multiplying the difference between the population at the end of the period under consideration (P0) and the current population (Pt) by 100. Using this knowledge.
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Which characteristic of a planet indicates whether the planet is made of solid rock or gas?
Atmosphere
O Presence of moons
O Presence of rings
O Surface composition
Answer:Surface composition
Explanation:The surface composition of a planet will tell you what the planet is composed of. Solid rock planets are able to have rings and moons if their gravitational pull is strong enough, therefore the only correct answer is surface composition.
Answer:
So the answer is: O Surface composition
Explanation:
The surface composition of a planet indicates whether the planet is made of solid rock or gas. If a planet has a solid surface, it is likely composed of solid rock. If a planet does not have a solid surface, it is likely composed of gas.
The presence of moons, the presence of rings, and the atmosphere of a planet do not necessarily indicate the composition of the planet, so those options are not correct.
So the answer is: O Surface composition
What condition is a mushroom like growth from the surface of a mucous membrane?
Pendunculated polyps are tissue growths that resemble mushrooms and are attached to the mucous membrane of the colon by a long, thin stalk.
Polyps are microscopic, scaly, or mushroom-shaped growths that develop inside the mucosa or right next to it. Inflammatory polyps, lymphoid polyps, and fibroepithelial polyps are only a few of the various varieties. The sore is known as a deep tissue injury when it's not an open wound present but the tissues underneath have been harmed (DTI). There might be a blood-filled blister or a region of skin that appears dark red or purple. Vesicles with a diameter more than 0.5 cm are called bullae. Bullae's thin walls make them prone to rupture. Bullae are large blisters that develop from second-degree burns. the soft inner lining that lines several bodily cavities and organs.
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when two populations no longer share the same gene pool, then ______ has occurred.
2. Identify how specifically identified components of the limbic system affect behavior,
sensations and emotions in humans. Be sure to provide abundant explanatory detail
and examples of limbic system functions.
The limbic system controls behavior, sensations and emotions in humans.
What is the limbic system?The limbic system is a complex network of brain structures that play a crucial role in regulating a wide range of behaviors, sensations, and emotions in humans. The specific components of the limbic system and how they affect behavior, sensations, and emotions include:
Hippocampus: The hippocampus is involved in memory formation and retrieval, spatial navigation, and emotional regulation. It is essential for creating new memories and linking them to emotional experiences.
Amygdala: The amygdala is a key center for processing emotions and is involved in the experience of fear and anxiety. It also plays a role in processing sensory information and generating emotional responses to external stimuli.
Thalamus: The thalamus is involved in sensory processing, particularly in the processing of touch, taste, and visual information. It also plays a role in regulating consciousness and attention.
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Which amino acid is most likely to participate in hydrogen bonding with water? To answer this you will need to look at the R-groups (.e. side chains) of each the amino acids. Use can use the slide in the lecture notes or go to Fig. 4.2 (Structures of the 20 amino acids) found in the text book.a. asparagine b. Oleucinec. valined. alanine e. phenyilanine
Answer: chicken amino acids
Explanation:
if a gene is found only on the x chromosome and not the y chromosome, it is said to be
A gene is considered to be "X-linked" if it can be identified exclusively on the X chromosome and not the Y chromosome.
X-linked geneAccordingly, the X chromosome's presence or absence determines whether the gene is inherited.In contrast to males, who only have one X chromosome and one Y chromosome, females have two X chromosomes, allowing them to inherit two copies of an X-linked gene. Males, on the other hand, only have one X chromosome. Due to the fact that males need only inherit one copy of the defective gene in order to manifest the feature, X-linked inheritance can cause some genetic illnesses, such as hemophilia and red-green color blindness, which are more prevalent in males than females.A gene is considered to be "X-linked" if it can be identified exclusively on the X chromosome and not the Y chromosome.learn more about X-linked gene here
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You probably know sharks have very sharp teeth, but did you know they never run out of them? If a shark loses a tooth, another moves forward from within the shark’s jaw, where it keeps a nearly unlimited supply of replacement teeth. This way, it’s almost impossible for a shark to end up without a full set of teeth. This is a phenomenon unique to the shark. No other animal in the world has teeth quite like the shark’s. A shark can go through as many as 20,000 teeth in its lifetime!Sharks have sharp teethSharks are cuddlyA shark's teeth are constantly being replacedSharks are scary creatures
Sharks are not typically considered cuddly creatures, as they are known for their predatory behavior and sharp teeth. However, it is true that a shark's teeth are constantly being replaced, and they can go through as many as 20,000 teeth in their lifetime.
As per the question given,
This is a unique phenomenon that is not seen in other animals. While sharks may be scary to some people, they are an important part of the ocean ecosystem and play a crucial role in maintaining a healthy balance of marine life.
This makes it nearly hard for a shark to lose all of its teeth. This is a shark-specific phenomena. No other animal on the planet possesses teeth like the shark. A shark may consume up to 20,000 teeth in its lifetime! Sharks have razor-sharp teeth. Sharks are adorable. The teeth of a shark are continually being replaced. Sharks are terrifying creatures.
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energy required by the cell is generated in the form of atp. atp is hydrolyzed to power many of the cellular processes, increasing the pool of adp. as the relative amount of adp molecules increases, they can bind to glycolytic enzymes, which will lead to the production of more atp. the best way to describe this mechanism of regulation is:
Option B) Allosteric activation and activation is the process of controlling the shape of an enzyme's active site to allow or prevent substrate entry.
Energy required by the cell is generated in the form of ATP. ATP is hydrolyzed to power many of the cellular processes, increasing the pool of ADP. As the relative amount of ADP molecules increases, they can bind to glycolytic enzymes, which will lead to the production of more ATP. The best way to describe this mechanism of regulation is allosteric activation
Some enzymes have more than one active site. The other site(s) is called allosteric site.
In this case, ADP released from the glycolytic reactions binds to the allosteric sites of glycolytic enzymes, activating them and causing further breakdown of glucose, hence ATP continues to be generated.
ATP + H2O ---> ADP + Pi + free energy
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Full Question: Energy required by the cell is generated in the form of ATP. ATP is hydrolyzed to power many of the cellular processes, increasing the pool of ADP. As the relative amount of ADP molecules increases, they can bind to glycolytic enzymes, which will lead to the production of more ATP. The best way to describe this mechanism of regulation is ________.
a. transcription
b. allosteric activation
c. feedback inhibition
d. cellular respiration
in appositional growth, chondrocytes within cartilage divide and secrete new matrix. true/false
True. Chondrocytes, which are the cells in charge of creating and maintaining the cartilage matrix, divide and secrete new matrix during a process called appositional growth,
Within cartilage, chondrocytes divide and secrete new matrix during appositional growth. cartilage that has become calcified. Two diaphysis and one epiphysis could define a long bone.
As opposed to interstitial growth, which occurs when the chondrocytes within the present cartilage matrix divide and produce new matrix, in the latter case. Chondrocytes in the perichondrium, the cartilage's outer layer, divide and secrete new matrix as the appositional growth process progresses.
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