The statement which is not true regarding the bones and the skeletal system is: The osteoblasts help break down the extracellular matrix of bone tissue.
What are osteoblasts?
Osteoblasts are specialized mesenchymal cells that synthesize bone matrix and coordinate skeletal mineralization. These cells work in concert with osteoclasts to resorb bone in a continuous cycle throughout life. The unique function of osteoblasts requires large amounts of energy production, especially during the stages of new bone formation and remodeling. Research over the past 15 years has shown that osteoblasts secrete endocrine factors that integrate the metabolic demands of osteogenesis and overall energy balance through regulation of insulin production, feeding behavior, and lipid metabolism. increase. In this article, specific energy substrates (glucose, fatty acids). Promotes bone formation and promotes osteoblast differentiation.
Therefore, The statement which is not true regarding the bones and the skeletal system is: The osteoblasts help break down the extracellular matrix of bone tissue.
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in cats, short fur is dominant over long fur. if two cats that are both homozygous dominant for fur length are bred, which combination of offspring best represents the likely outcome of the cross?
That may be homozygous dominant or homozygous recessive, and it can be either AA or aa. A person who possesses two dominant "A" alleles for a specific gene is said to be homozygous for that gene. One who possesses two recessive "a" alleles and is homozygous for them will have the genotype "aa."
One of two types of organisms can exist: homozygous recessive (TT) or homozygous dominant (TT) ( tt ). Heterozygous denotes that an organism possesses both alleles (Tt) of a particular gene (hetero- means different).
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what would happen if the body allowed us to exhale all of the air out of our lungs?
As a result of the alveoli collapsing, there would be a buildup of carbon dioxide in the blood and an obstruction to oxygen absorption. Since the body’s cells require oxygen to function, the situation may be fatal.
What is the definition of inhalation and exhalation?
The act of inhaling involves pushing air into the lungs by contracting the diaphragm and respiratory muscles, which results in a negative pressure. Exhalation is the phase of breathing during which the respiratory muscles relax and air is extracted from the lungs.
What is the process of inhalation?
Air enters your lungs when you inhale (breathe), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out). Gas exchange is a procedure that is vital to life
What type of process is exhalation?
The elastic nature of the lungs makes exhalation a passive process. Internal intercostal muscles lower the rib cage and reduce thoracic volume during forced expiration, whereas abdominal muscles press up on the diaphragm, which constricts the thoracic cavity.
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Why is it important to récord all data and procedures in an experiment
It is important to record all data and procedures in an experiment because the evidence and the proof depend upon the data that is found in the scientific experiment.
What is the significance of the scientific data?The scientific data is important when the experiment is done, as from the data the result is gotten, and based upon the data, the research is carried out in a particular direction, and the further experiments and the possible mistakes can be identified through this data record.
Hence, it is important to record all data and procedures in an experiment because the evidence and the proof depend upon the data that is found in the scientific experiment.
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when a stem cell divides, it produces two daughter cells. one daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell. which factor will most directly determine what type of specialized cell will be produced?
The genes that are expressed are the factor that will most directly decide what kind of specialized cell will be created.
The building blocks of the body, stem cells are the cells that give rise to all other cells with specific roles in the body. In the body or in a lab, stem cells can divide to create new cells known as daughter cells under the correct circumstances.
Pluripotent stem cells called embryonic stem cells are produced from the inner cell mass of a blastocyst, a developing embryo prior to implantation. After fertilizations, 4-5 days later, human embryos comprised of 50–150 cells reach the blastocyst stage.
The two primary sources of stem cells are adult body tissues and embryos. In order to produce stem cells from other cells, scientists are also exploring with genetic "reprogramming" approaches.
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. the species geneticus isalmostoveris is a diploid and has an x number of 12. how many chromosomes would be expected in the following? (a) a monosomic (b) a trisomic (c) a triploid
The thread-like components known as chromosomes are found in the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA).
DNA is passed down from parents to children and contains the precise instructions that give each kind of living thing its individuality.
How many chromosomes would be expected in the following?
In a monosomy, the absence of one chromosome results in 2n-1
As the organism is diploid and the x number is 12, 2x=2n=24, which means that 23 chromosomes will be present.
hence, 2n-1 in a monosomic state
b. In a trisomy, there will be 25 chromosomes due to the addition of one chromosome (2n+1).
A triploid is one that has all of its chromosomes altered.
2n=3x= 36
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List three ways innovation in the Gilded Age changed America
Answer:
bridges and canals, elevators and skyscrapers, trolley lines and subways.
Explanation:
Innovations of the Gilded Age helped usher in modern America. Urbanization and technological creativity led to many engineering advances such as bridges and canals, elevators and skyscrapers, trolley lines and subways.
Cell adjust its environment using homeostasis regulation is that’s true or false
Explanation:
Homeostasis refers to stability, balance, or equilibrium within a cell or the body. It is an organism’s ability to keep a constant internal environment. Homeostasis is an important characteristic of living things. Keeping a stable internal environment requires constant adjustments as conditions change inside and outside the cell. The adjusting of systems within a cell is called homeostatic regulation. Because the internal and external environments of a cell are constantly changing, adjustments must be made continuously to stay at or near the set point (the normal level or range). Homeostasis can be thought of as a dynamic equilibrium rather than a constant, unchanging state.
in comparison with the renal cortex, fluid in the proximal tubule is hyperosmotic.
The proximal tubule fluid is more hyperosmotic than the renal cortex, but this does not influence what is causing the acid-base disruption.
How does hyperosmotic work?In the extracellular space, the first drop in temperature results in the formation of crystals, which creates a hyperosmotic environment that draws water out of the cells and causes them to contract. Organelles & biological membranes are damaged as a result of inner crystal formation as the temperature drops.
What transpires inside a hyperosmotic environment to a cell?A cell submerged in a 10% dextrose hyperosmotic , osmotic pressure solution would initially lose area as water departs and then start gaining proportion as glucose is delivered through into cell as moisture follow by osmosis. This is because water crosses cell surfaces more quickly than solutes do.
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autotrophs may have these organelles to help convert sunlight into food for the cell
The cell's nourishment is produced by chloroplasts. Only plant cells and some protists, including algae, have the organelles. Chloroplasts are not found in animal cells. Chloroplasts function to transform solar light energy into sugars that may be utilized by cells.
Autotrophs possess mitochondria, right?Answer and justification Because mitochondria are where cellular respiration takes place, autotrophs require them. Energy must be produced through the respiration process. Because autotrophs are organisms that produce their own food, doing so requires energy.
The source of autotrophs' energy?For energy and nutrients, autotrophs either use sunlight to produce food through photosynthesis (photoautotrophs) or, less frequently, use chemical energy to create food from inorganic materials (chemoautotrophs).
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substrate level phosphorylation occurs within a metabolic pathway where sufficient energy is released by a given chemical reaction to drive the synthesis of atp from adp and phosphate. substrate level phosphorylation is seen in which metabolic pathway(s)?
Substrate level phosphorylation is seen in both glycolysis and the Krebs cycle.
What is Phosphorylation?
Phosphorylation is a biochemical process in which a phosphate group is added to a molecule, usually a protein or other organic molecule. This process is important in many cellular processes, such as cell signaling, metabolism, and gene expression. Phosphorylation typically occurs when a protein is activated or deactivated by a specific chemical signal, such as a hormone.
What is the Krebs cycle?
The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a series of chemical reactions that takes place in the mitochondria of cells. It is the central metabolic pathway of cellular respiration, where energy from carbohydrates, fats, and proteins is converted into adenosine triphosphate (ATP) molecules, the primary energy source of the cell. The Krebs cycle involves the oxidation of acetyl-CoA to carbon dioxide and the reduction of NAD+ to NADH.
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which of the following statements is true concerning thermoreception? group of answer choices increased depolarization of thermoreceptors is the result of increased temperatures. heat and cold are received by the same receptors. when the temperature at the body surface remains stable, the thermoreceptors become inactive. when the body temperature increases, receptors decrease their rate of firing. pacinian corpuscles are important thermoreception devices.
Regarding Thermoreception, the following claims are true: Temperature increases lead to an increase in thermoreceptor depolarization.
Which of the above statements accurately sums up thermoreceptors?The spinothalamic tracts are used to transmit thermoreceptor-detected sensations. They are receptors for tonics. Thermoreceptors become particularly active when the temperature changes, but they need some time to become accustomed to a steady temperature.
What is accurate regarding thermoreceptors?The nerve cells known as thermoreceptors are trained to detect temperature variations. Temperature is a measure of how much heat is present in an environment. Thermoreceptors, which can distinguish between heat and cold, are present all over the skin and enable sensory reception throughout the body.
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Consider the following chemical equation:
NH3 + O2 → NO + H2O
The equation is unbalanced. Which of the following is the correct balanced equation?
A.
NH3 + 2O2 → NO + 6H2O
B.
4NH3 + 5O2 → 4NO + H2O
C.
4NH3 + 5O2 → 4NO + 6H2O
D.
NH3 + 5O2 → NO + 6H2O
4NH3 + 5O2 → 4NO + 6H2O is the correct balanced equation in the given chemical equation options.
What do you mean by Chemical equations?
A chemical equation is a written representation of the chemical reaction taking place between two or more substances. It can be written in words or symbols, and typically consists of the reactants (on the left side) and the products (on the right side). The arrow between them indicates the direction of the reaction.
The above equation is balanced because it has the same number of atoms of each element on both sides of the equation. The equation is balanced because it has 4 atoms of nitrogen (N) on the left side and 4 atoms of nitrogen on the right side. It has 5 atoms of oxygen (O) on the left side and 6 atoms of oxygen on the right side. It also has 3 atoms of hydrogen (H) on the left side and 12 atoms of hydrogen on the right side.
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which of the following is an exclusively primate trait? a) tapetum lucidum (reflective layer in the retina) b) prehensile hands and feet with nails, not claws c) birthing only one or two offspring at a time d) incumbent incisors
The exclusively primate trait is prehensile hands and feet with nails, not claws.
What is primate trait?
The following characteristics set primates apart from other mammals: unspecialized structure, specialised behaviour, a short muzzle, a low sense of smell, prehensile five-digit hands and feet with flat nails instead of claws, keen vision with depth perception due to forward-facing eyes, a large brain, and protracted pre- and postnatal development. Most species only have one young and group together in male-led units.
Several primates share the following traits:
strong hands.a skeleton that is broadly adapted for remarkable physical agility.a large brain.sharp vision.Most of the time, smaller offspring than other animals demand more care during their upbringing.Therefore, Option B is correct.
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4 chambered hearts are ideal for amphibians and reptiles due to the low metabolic rates of these organisms
This statement is False.4 chambered hearts are not ideal for amphibians and reptiles due to the low metabolic rates of these organisms
We see that the heart's structure gets more functional with an increase in the number of chambers as we proceed from the lower classes of vertebrates to the higher classes.
Fish have hearts with two chambers.
Most reptiles, except crocodiles, and amphibians have three chambers in their hearts.
Mammals and birds both have four heart chambers.
Except for crocodiles, amphibians and reptiles have a three-chambered heart with a single ventricle. This is because these animals need less oxygen to be given to the body per liter of blood since they have slower metabolic rates.
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a. mitosis produces diploid cells, but meiosis produces haploid cells b. mitosis produces 4 daughter cells, but meiosis produces 2 daughter c. genetic exchange occur in mitosis d. mitosis requires one dna replication and one cell division, but meiosis requires one dna replication and two cell divisions
All texts in a,b,c and d explain meiosis and mitosis, but only one is different is D. Where it specifically explains the difference between the two.
What is difference between mitosis and meiosis?Mitosis:
Occurs in all organisms, except viruses.Creates body/somatic cells.One cell division ( 4 stages total).Prophase is short.No recombination/crossing over in prophase.During metaphase, individual chromosomes line up on cell’s equator.During anaphase, sister chromatids move to opposite ends of the cell.Number of cells created two daughter cells.Creates diploid daughter cells.Daughter cells are genetically identical.Meiosis:
Only occurs in animals, plants, and fungi.Creates germ/sex cells.Two cell divisions (8 stages total).Prophase I is longer.Recombination/crossing over of chromosomes during prophase I.During metaphase I, pairs of chromosomes line up on cell’s equator.During anaphase I, sister chromatids move together to the same cell pole. During anaphase II, sister chromatids are separated to opposite ends of the cell.Number of cells created 4 daughter cells.Creates haploid daughter cells.Daughter cells are genetically different.Learn about difference between mitosis and meiosis here: brainly.com/question/88103
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What 3 characteristics determine if something is a living organism
There are three fundamental characteristics of living things: growth, nutritional uptake (i.e., consumption of food and water), and reproduction (which means they make more living things like themselves). Non-living creatures cannot reproduce, grow, or require nutrition.
What three ways can we know if something is alive?Because they are "heterotrophic," they obtain their energy by consuming other species. They can physically move their bodies around at some point during their life cycle.
What are the three traits that cells have according to the cell theory?The cell theory's three pillars are as follows: Every living thing is made up of one or more cells. The cell is the fundamental building block of structure and order in organisms. Existing cells give rise to new ones.
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the northern leopard frog, tree frog, and wood frog are all different species of frogs. why is having a scientific name for each species of an organism important for scientists?
Binomial nomenclature, which consists of two parts, is used to identify every identified species on Earth. They are crucial because they enable global communication regarding various animal species.
What makes the northern leopard frog unique?The numerous irregularly shaped dark spots that decorate the back and legs of northern leopard frogs give them their name. They have light-colored ridges on either side of their backs and are greenish-brown in color with a pearly white underside.
Why was the frog chosen as the test animal?For a long time, frogs have served as study models. When compared to mammals, their physiology is comparatively straightforward, and research on frog muscles in the 1920s revealed that the neurotransmitter acetylcholine was in charge of transmitting nerve impulses signaling movement to the muscles.
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Assertion Reason Question:
Assertion (A) - The rhythmic beating of various chambers of the heart maintain circulation of blood.
Reason (R) - Pulse rate per minute indicates the rate of heart beat.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: B
Explanation: Both A and R are true but R is not the correct explanation of A.
genetic analysis of the dna isolated from an unknown organisms indicates that it contains the gene that codes for telomerase. based on this information alone, you can conclude that this organism
genetic analysis of the dna isolated from an unknown organisms indicates that it contains the gene that codes for telomerase. based on this information alone, you can conclude that this organism is eukaryotic.
Eukaryotes are organisms with nuclei in each of their cells. Eukaryotes include all animals, all plants, all fungi, and many unicellular creatures. They are a part of the Eukaryota or Eukarya group of organisms, one of the three categories of life. The remaining two domains are made up of bacteria and archaea.
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I need help with this question could someone please help?
Answer:
I would say false since the sugar in RNA is called ribose
Explanation:
best of luck
Answer: FALSE
Explanation: It should be Ribose sugars
Unlike DNA, RNA is usually single-stranded. Additionally, RNA contains RIBOSE SUGARS rather than deoxyribose sugars.
Using your knowledge of osmosis, explain why you should not drink large quantities of ocean water by answering the following:
1. Is ocean water hypertonic, hypotonic or isotonic to the cells in your body? Explain.
2. Based on your answer to part 1, what will this type of solution ultimately do to the cells of your body?
Ocean water is hypotonic to the cells in the body. The osmotic pressure of sea water is higher than that of our body during the presence of large number of Na+ ions. As a result sea water is hypotonic with respect to our body.
What is Osmosis?Osmosis is the transport of a solvent by a semi-permeable membrane that separates two solutions of different solute concentrations. During osmosis, a solvent that has a lower solute concentration moves from a solution with a higher solute concentration.
When a substance is placed in a hypotonic solution, the solvent molecules move inside the cell, causing the cell to swell or undergo plasmolysis. This is known as endosmosis.
Thus, ocean water is hypotonic to the cells in the body. The osmotic pressure of sea water is higher than that of our body during the presence of large number of Na+ ions. As a result sea water is hypotonic with respect to our body.
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how does the number of chromosomes in a female mouse’s egg cells compare with the number of chromosomes in the rest of her body’s cells?
a. the number of chromosomes in egg and body cells varies greatly
b. the egg cells contain the same number of chromosomes as the body cells
c. there are twice as many chromosomes in the egg cells
d. there are half as many chromosomes in the egg cells
Answer:
C
Explanation:
The egg cells require far more chromoisomes
hydrogen bonds between the orange and red strands are not shown but are implied by the model.
Replication is the central dogma process. First, the hydrogen bond breaks, then DNA strands separate, followed by the addition of nucleotides, and hydrogen bonds.
What is DNA replication?DNA replication is the process of the central dogma in which the hydrogen bonds present between purine and pyrimidine are broken by the helicase enzyme.
This results in the separation of the DNA strand into the template and other strands. On the loose template strand, free nucleotides are added by complementary base pairing.
Therefore, Replication is the central dogma process. First, the hydrogen bond breaks, then DNA strands separate, followed by the addition of nucleotides, and hydrogen bonds.
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The epinephrine signaling pathway plays a role in regulating glucose homeostasis in muscle cells. the signaling pathway is activated by the binding of epinephrine to the beta-2 adrenergic receptor. A simplified model of the epinephrine signaling pathway is represented in figure 1.
Based on Figure 1, which of the following statements best describes the epinephrine signaling pathway?
The epinephrine signaling pathway is best described as involving enzymes activating other enzymes.
What is the purpose of epinephrine?An injection of epinephrine is used to treat severe allergic responses (including anaphylaxis) to meals, medications, insect stings, foods, or other substances in an emergency. It is also utilized to alleviate allergy brought on by unidentified chemicals or brought on by physical activity.
What is epinephrine's primary effect?Epinephrine causes enhanced vascular smooth muscles contraction, pupil dilation dilator muscle and nerve function, and intestine sphincter muscle contraction via acting on alpha-1 receptors. A higher heart rate, contractility, and renin production via beta-1 receptors are additional major effects.
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suppose human activities that influence the carbon cycle came to a complete stop. use the information provided in the figure to predict the net effect on global carbon cycling.
A) Carbon cycling would be brought into balance so that it moves at equal rates through all compartments.
B) Carbon cycling would be shifted toward an increase in deposition in sediments and fossil fuels and a decrease in inorganic carbon dioxide levels.
C) Carbon cycling would be shifted toward an increase in outgassing of carbon dioxide from ocean waters and a decrease in carbon levels in living plant biomass.
D) Carbon cycling would be shifted toward an increase in dissolution of carbon dioxide into ocean waters and a decrease in carbon levels in living plant biomass
The balance of carbon cycling would shift in favor of higher sediment or fossil fuel deposition and lower levels of inorganic CO2.
What is carbon used for?Coal, methane gas, and crude oil are all utilized as fuels (which is used to make gasoline). It is used to create a wide range of products, including polymers and steel alloys.
Why is carbon so important?Without carbon, life on earth would not be conceivable. This is partly because carbon could easily make bonds with other atoms, allowing biomolecules like DNA and RNA, which are crucial for the development and replication that characterize life, to take on a variety of shapes and functions.
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PLS HELP What are three types of natural selection that act on variation?
A) Stabilizing, directional, and disruptive
B) Physical, chemical, and organic
C) Genetic, hereditary, and environmental
D) None of the above
Stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
What are these types of selection?
Natural selection is the process wherein organisms get better adapted to their environments and tend to survive and produce more offsprings. It is basically a mechanism of evolution which favors those organisms that can better adapt to their environment.
Directional selection: this theory states that an extreme phenotype (a characteristic or trait) is favored over other phenotypes and this causes the allele frequency to shift in favor of the extreme phenotype over time. A particular trait, if favorable, will be expressed in the population at the most beneficial frequency.
Stabilizing selection: in this type, meaning a non-extreme trait is favored instead of one of the two extreme traits. Stabilizing selection is said to be the most common mechanism for natural selection, because most traits do not change drastically over time.
Disruptive selection: This selection is bimodal. It favors both of the extreme traits in a population.
So therefore, stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
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the entire sruface of the barin is thrown into elevated ridges of tissue called tyhat are separated
Their entire surface is divided into elevated ridges of tissue called gyri, which are separated by either fissures or sulci, which are deeper grooves.
What is the name for the high brain ridges?Gyri and sulci are terms used to describe the raised tissue ridges and shallow grooves that make up the cerebral cortex's surface.
What do brain ridges and grooves represent?The grooves are known as Sulci, and the ridges are known as Gyri. Each gyrus has sulci surrounding it, and these sulci work together to enhance the cerebral cortex's surface area and create different parts of the brain. More neurons may be crammed into the cortex by increasing the surface area of the brain, which would increase the cortex's processing power.
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please answer this , it's very important
what test did you pick to distinguish your two organisms? you will need to look this up on the internet
The test that difference between the serratia and Enterobacteriaceae is that it is done by rapid test that is gram positive test.
Serratia species are opportunistic gram-negative micro organism withinside the massive family, Enterobacteriaceae. Serratia are sizable withinside the environment, however aren't a not unusualplace factor of the human fecal flora. Serratia marcescens is the number one pathogenic species of Serratia.
Thus, a fast take a look at has been wished to distinguish Serratia from Enterobacter. Serratia produces the blue-inexperienced indigo shadeation inside five min., while Enterobacter produces the blue-inexperienced shadeation in 1/2 of an hour.
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The complete question is:
What test did you pick to distinguish your two organisms Enterobacter aerogenes and Serratia Fonticol?
which glands of the endocrine system produce and release substances through ducts or openings on the body's surfaces?
Exocrine glands of the endocrine system produce and release substances through ducts or openings on the body's surfaces.
Exocrine glands in the endocrine system create and release hormones through ducts or pores on the skin. Examples include sweat glands, lacrimal glands, and salivary glands. Our endocrine system, on the other hand, consists of endocrine glands that release hormones. Endocrine glands include, but are not limited to, your pituitary, thyroid, and adrenal glands.
Exocrine glands use ducts to discharge their substances onto the surfaces of your body. Conversely, endocrine glands release their substances directly into your blood. They are known as ductless glands. Endocrine glands, which secrete hormones, make up your endocrine system.
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