Sound is produced as air is forced through the glottis, causing vibration of the true vocal cords.
A valve that regulates airflow into and out of the respiratory tubes is called the glottis, which is a slit-like aperture on the floor of the throat. A box-shaped larynx is directly accessible from the glottis.Swallowing, breathing, and voice production all include the larynx.When air flows through the vocal cords, it causes them to vibrate, which in turn generates sound waves in the pharynx, nose, and mouth. The degree of stress on the vocal folds affects the pitch of the sound.When air flows through the vocal cords, it causes them to vibrate, which in turn generates sound waves in the pharynx, nose, and mouth. The degree of stress on the vocal folds affects the pitch of the sound.learn more about sound here: https://brainly.com/question/4351510
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A common adage is that it only takes one sperm to fertilize an egg. As an anatomy student. What would be your response?.
While only one sperm head enters the egg, thousands are needed to break through the egg's defenses.
Yes it takes only one sperm to fertilize the egg but it does take many sperms to break through the defenses of the egg to reach the egg.
Where do we observe fertilization occurring?It occurs in the ampullary part(Upper 3rd) of the Uterine Tube.
What is fertilization?Fertilization is a multi-step, intricate process that takes 24 hours to complete. The beginning of pregnancy and the start of a female's 280-day journey begin when male sperm and female ovum combine to form a zygote. There are two ways to monitor this procedure, and they vary depending on the day the counting starts.What constitutes fertilization's four steps?
There are four distinct mechanisms that make up the stages of fertilization:
Sperm preparation comes first, followed by sperm-egg recognition and binding.sperm-egg fusion.fusion of the pronuclei of the sperm and the egg. activation of the zygote.To learn more about fertilization visit:
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What molecule(s) could diffuse across the plasma membrane? disaccharides fe2 tryptophan amino acid ch4
Methane CH4 molecule can diffuse across the plasma membrane . So the correct answer is CH4.
Passive diffusion is a nonselective mechanism that allows any molecule that can dissolve in the phospholipid bilayer to traverse the plasma membrane and establish equilibrium between the inside and outside of the cell. It's crucial to note that only tiny, mostly hydrophobic compounds can diffuse significantly through a phospholipid bilayer.
Gases (like O2 and CO2), hydrophobic substances (like benzene), and tiny polar but uncharged substances (like H2O and ethanol) can all diffuse across the plasma membrane as a result. However, some biological molecules cannot dissolve in the phospholipid bilayer's hydrophobic interior.
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it is difficult for blood to clot in wound artery than in wounded vein
Explanation:
because the pressure exerted by artery is more than that of vein due to its narrow lumen and thick walls...causing it difficult to clot.
It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the ____, or eastern Mediterranean.
It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the Levant or eastern Mediterranean.
Historically, a broad area in Western Asia's Eastern Mediterranean region has been referred to as the Levant.It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the Levant or eastern Mediterranean.Levant originally meant "the East" or "Mediterranean lands east of Italy" when it first appeared in the English language in 1497. It is derived from the French word levant, which means "rising" and refers to the sun rising in the east or the sunrise location.Some of the earliest stone tools manufactured by our ancestors Homo erectus after they left Africa were made by the earliest humans in the Levant at a few known sites in Israel, Syria, and Jordan about 1.7 million years ago.learn more about Homo sapiens here: https://brainly.com/question/5176769
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Excitation of the quadriceps femoris group and inhibition of the hamstring group is termed _______ innervation.
Excitation of the quadriceps femoris group and inhibition of the hamstring group is termed reciprocal innervation.
Reciprocal inhibition describes the relaxation of muscles on one side of a joint to accommodate contraction on the other side. Quadriceps femoris muscle are large fleshy muscle group covering the front and sides of the thigh. It has four parts namely rectus femoris, vastus lateralis, vastus medialis, and vastus intermediate. Quadriceps femoris consists of the rectus femoris and the three vastus muscles. These muscles work together to extend the knee and stabilize the patella, or kneecap.
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How would the presence of an extra solute - glucose – in the urine affect the urine is osmotic pressure and tendency to draw water by osmosis?
When the extra amount of glucose is present then the reabsorbtion capacity of kidney glucose remains in the filtrate , which is causes an increase in osmotic pressure causing potassium and water to move out into the urine.
Hyper-tonic additional glucose stimulates osmotic fluid that increase plasma and blood volumes. Glucose provides nutritional aspects and also used as a metabolic testing. Decreased intravascular osmotic pressure from decreased concentration of plasma protein , particularly.
Osmotic pressure is required to prevent the net movement of water into solute of the solution when the solution are separated by a selectively permeable membrane.Serum albumin protein found in blood plasma that helps in maintain osmotic pressure between blood vessel and tissues.
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Aquaporins would be expected to _____ in numbers when _____ is present in the blood
Aquaporins would be expected to increase in numbers when there is an insufficient amount of water present in the blood.
Aquaporins are a type of proteins which are present in the integral membrane of the cells. They act as channels and help in the transport of water and small solutes across the membrane.
Whenever there is insufficient amount of water present in the blood, the antidiuretic hormone or the ADH responds. The aquaporins increase in number in the blood. They allow the transcellular reabsorption of water. Due to this fact, more water is able to escape from the collecting tubules and enter the blood.
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Which experiment would best provide data to support the mechanism by which an odn inhibits in activity?
Keeping integrase (IN) concentration constant and measuring the initial velocity of the reaction at increasing vDNA concentrations in the presence and absence of the ODN, is called competitive inhibition.
This experimental mechanism is competitive inhibition, where ODN (oligodeoxynucleotides) acts as competitive inhibitors. That is the ODN binds to the integrase instead of vDNA (viral DNA) binding to the enzyme integrase.
To determine the activity of the ODN, the Km and Vmax values should be calculated. Km (Michaelis constant) which shows the affinity of the enzyme to the substrate and Vmax (maximum velocity at saturating substrate concentration).
Calculating these two values in the presence and absence of the inhibitor can determine the activity of the inhibitor (ODN).
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If the cell wall of a bacterium was removed, and then the cell was gram-stained, what color would it appear?
In Gram's procedure, the sample cells are first stained dark blue, followed by a thin cell wall decolorization step that is followed by a red dye counterstain.
Crystal violet is kept inside of cells with a thick cell wall, giving the appearance of blue (gram positive) cells.In Gram negative bacteria, there is a thin peptidoglycan layer sandwiched between two thin cell membranes. The bacteria are first rinsed with crystal violet, a purple stain, then iodine to perform a Gram stain. Iodine and crystal violet combine to generate massive complexes that adhere to cells and color them purple.learn more about Gram staining here:
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Which types of animals must have access to environmental enrichment, as mandated by the animal welfare regulations?
Animals which have access to environmental enrichment are Non Human primates as mandated by Animal Welfare Regulations.
Environmental enrichment refers to the modificational changes to upgrade the level of social, physical and mental stimulation to the environment.
Environmental enrichment for laboratory animals is for improving animal well-being. It is used as a research tool to understand the effects of experience on the brain like in Ruminants.It comprises different boundaries of housing animals.It is achieved to make environment more complex and provide cognitive challengesLearn more about Non-Human primates here, https://brainly.com/question/17254525
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Animals which have access to environmental enrichment are Non Human primates as mandated by Animal Welfare Regulations.
Environmental enrichment refers to the modificational changes to upgrade the level of social, physical and mental stimulation to the environment.
Environmental enrichment for laboratory animals is for improving animal well-being.
It is used as a research tool to understand the effects of experience on the brain like in Ruminants which are Non Human primates.
It comprises different boundaries of housing animals.
It is achieved to make environment more complex and provide cognitive challenges.
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The air masses that have the greatest influence on weather conditions in the central united states are?
The air masses that have the greatest influence on weather conditions in the central United States are Continental polar and Maritime Tropical air masses.
What are air masses?A large volume of air in the atmosphere with uniform temperature and moisture is called an air mass.
These air masses can extend horizontally for thousands of kilometres. Vertically, they can extend from ground level to the stratosphere which is up to 16 kilometres into the atmosphere. Air masses formed on land are called continental air masses and those formed over water are called maritime air masses.
When strong winds blow, air masses are moved as a whole and when they move, they carry the weather conditions of their original source with them. This influences the weather in their new location.
If the air mass clashes with an already present air mass at the new location, it can give rise to a severe storm.
Therefore two air masses affecting weather conditions in the United States are Continental polar and Maritime Tropical air masses.
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During the embryonic period, the endoderm is formed, which will develop into the?
Answer:
in the fetus
Explanation:
because the development of an emrory occurs in an oviduct when a man cooperate
Some of the food in the protein group and dairy group are high in saturated fats and cholesterol. These raise which cholesterol in the blood?
The food in the protein group and dairy group are high in saturated fats and cholesterol, it raise LDL in blood.
What is cholesterol?
Cholesterol is a waxy like substance synthesized from two sources such as liver and from animals like meat, poultry, diary product.
There are two types of cholesterol, one is bad called LDL cholesterol and second one is good called as HDL.
LDL narrow down the arteries by depositing fats in it, the condition known as atherosclerosis which leads to increase in risk for heart attack, stroke and peripheral artery disease.
On the other hand, HDL protect against heart attack and stroke
Third component called triglycerides are the common type of fat act as a reservoir of excess energy.
Hence, LDL is the correct answer.
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Which best describes neurons? like all eukaryotic cells, neurons do not have the ability to regulate what substances go in and out of the cell. like all eukaryotic cells, neurons have a nucleus that controls the activities of the cell. unlike other eukaryotic cells, neurons cannot produce energy that can be used to carry out the life-sustaining processes of the cell. unlike other eukaryotic cells, neurons have a membrane that surrounds the cell.
like all eukaryotic cells, neurons have a nucleus that controls the activities of the cell is the correct option.
What are neurons?The basic building blocks of the brain and nervous system are neurons. They are the cells that receive sensory information from the outside world, convey motor directions to our muscles, and transform and relay electrical signals at each stage along the way.What is the function of neuron?The neuron, a specialized cell created to send information to other nerve cells, muscle cells, or gland cells, is the basic functional unit of the brain. Axons, dendrites, and a cell body make up the majority of neurons.Mention the types of neurons:
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If a cell stains dark for the sdh test and light for the matpase test, how can we classify that cell?
Cell stained light for the metaphase test and dark for the SDH, then we can classify the cell as an oxidative cell.
What is metaphase?Metaphase, the second stage of mitosis, sees the chromosomes travel onto the spindle's equatorial plane.
What is the SDH test?Oxidative cell stains are dark for the SDH test and light for the metaphase test.SDH is an enzyme used in testing mainly to detect hepatocellular injury in cattle and horses.SDH enzyme is also detected in human tissues. The major sites where the SDH enzymes are found in humans are kidneys, seminal vesicles and kidneys.To know more about oxidative cells visit:
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Land that used to be a meadow is converted to a housing development. the next year, fewer milkweed flowers are observed. what happened?
A former meadow is turned into a housing complex, and the next year, fewer milkweed blooms are seen due to pollination.
What applications does milkweed have?
The herb has also been used medicinally despite the danger of poisoning. Many native cultures chewed the roots of milkweed to heal diarrhea and used the sap to remove warts. Infusions and salves were also made from it to treat asthma, coughing, fevers, rashes, and swelling.
What kind of soil is ideal for milkweed growth?
In regions with more rainfall, like the eastern United States, milkweed thrives. Asclepias tuberosa, sometimes known as butterfly weed, thrives in drier climates like those in the western United States. Sand or gravelly soils are required. The Clay variety is an anomaly since it thrives on heavier soils, especially dry clay. Plant under the intense sun.
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What three key observations allowed darwin to deduce that natural selection is a primary driver of evolution?
What three key observations allowed darwin to deduce that natural selection is a primary driver of evolution?
Populations of organisms vary, more offspring are produced than can survive, and the relative frequency of favourable mutations rises with time.
What is natural selection?Natural selection is the variation in individual survival and procreation brought on by phenotypic variances. The evolution of a population's heritable features across generations is a fundamental mechanism of evolution. By contrasting it with artificial selection, which in his opinion is intentional and natural selection is not, Charles Darwin popularized the phrase "natural ."
Every population of organisms contains variation. This happens in part because an organism's genome might experience random mutations, which its descendants may inherit. Individuals' genetics and environments interact throughout their lifetimes to produce different phenotypes.
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What does each star become after the main sequence stage?
PERFECT QUESTION! SPACE IS WHERE ALL MY INTERESTS ARE!
Answer:
Once a star reaches the limit of it's current stage, which in this case, is the main sequence stage, it will expand and cool, resulting a Red Giant.
What are the stages in the life of a star and what happens in each?1. Nebula
A nebula is an out-of-this-world cloud of gas (hydrogen) and dust. The nebulae are where stars are born. Nebulae come in a variety of forms. A brilliant emission nebula, like the one in Orion, shines because the gas there is powered by the stars that have already formed there. Starlight reflects on the dust particles within a nebula to form a reflection nebula. The Pleiades Cluster's nebula is an example of a mirror nebula. There are also Dark Nebula. These are thick, hydrogen-filled clouds that either fully or partially block the light from the stars behind them, such as the Horsehead Nebula in Orion.
2. Star
A star is a glowing ball of gas that generates all of its own heat and light through nuclear processes (nuclear fusion). They are made primarily of hydrogen and helium gas and are created from nebulae. The colors that correlate to the surface temperatures, which vary from red to blue-white, span from 2000 C to above 30,000 C. With masses 100 times greater than the Sun's, the brightest stars produce as much light as millions of Suns. They have a lifespan of just a million years before becoming supernova. Red dwarfs, which are just a thousandth as luminous as the Sun, are the weakest stars. A star can have a minimum mass of around 8% of the mass of the Sun, or 80 times the mass of the planet Jupiter, for nuclear processes to occur. Brown dwarfs or big planets are objects that have less mass than the critical mass and glow very weakly. A star like the Sun swells out into a red giant as it nears death, loses its outer layers as a planetarian nebula, and then contracts to become a white dwarf.
3. Red Giant
The surface of this big, brilliant star is chilly. It develops as a star like the Sun's core runs out of hydrogen fuel in its final phases of growth. The diameter of a red giant ranges from 10 to 100 times that of the sun. Despite having a surface temperature between 2000 and 3000C that is lower than that of the Sun, they are extraordinarily brilliant due to their size. Super Giants are a common name for red giants, very massive stars. These stars frequently exhibit luminosities one million times higher than the Sun and have dimensions up to 1000 times that of the Sun.
4. Red Dwarf
These are extremely tiny, dim, and cold stars that have a mass and diameter that is roughly equal to that of the Sun. They have an estimated lifespan of 100 billion years and burn very slowly. Proxima Centauri and Barnard's Star are red dwarfs.
5. White Dwarf
This tiny, blazing star is at the end of its life cycle as a star like the Sun. White dwarfs are stars that are similar in mass to the Sun but have a diameter that is just 1% as large as the Sun, or around the size of the Earth. Although a white dwarf is smaller than the Sun and has a surface temperature of 8000C or more, it has an overall brightness of little more than 1% of the Sun. The shriveled remnants of typical stars whose nuclear energy reserves have been depleted are known as white dwarfs. Due to gravitational processes, white dwarfs are composed of degenerate matter with an extremely high density; one tablespoon contains many tonnes of mass. Over a few billion years, white dwarfs cool and disappear.
6. Supernova
This is a star's cataclysmic demise, which frequently gives the star for a brief period the brilliance of 100 million suns. Supernovae often fall into two categories: - These are Type I explosions, which take place in binary star systems when gas from one star collides with a white dwarf, triggering an explosion. Type II These occur in stars that are 10 times as massive as the Sun or more, and near the conclusion of their lifetimes, they experience runaway internal nuclear reactions that result in an explosion. Black holes and neutron stars are what they leave behind. The primary source of elements heavier than hydrogen and helium is assumed to be supernovae.
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Eddie
Which relatively rare type of neuron has two processes extending from opposite sides of the cell body?
Bipolar neuron has two processes extending from opposite sides of the cell body.
Typically, neurons consist of a cell body and one or more extensions. Dendrites (short extensions with ramifications) and axons are the two forms of extension (just one extension of varying length depending on the cells).
Two processes, oppositely extending from the cell body's ends, are present in bipolar cells. One is the dendrite, the other the axon. Bipolar neurons are not common. They are sensory neurons that can be found in the vestibulocochlear nerve's ganglia, olfactory epithelium, and retina.
Therefore, Bipolar neuron has two processes extending from opposite sides of the cell body.
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The ability of a molecule to absorb infrared radiation is measured with ir spectrometers, which report the frequency of light absorbed in units of cm¯1. which explanation best describes this unit?
Spectrometer is a technique used to measured that how much a chemical substance absorbs light by measuring its intensity of light as a beam of light passes through solution.
IR spectrometer uses light over the infrared range from 700-15000 nm of electromagnetic radiation spectrum. If the concentration of greenhouse gases increases then more infrared radiation will be absorbed and emits back towards earth surface.
When infrared energy is absorbed by a matter the infrared causes the molecules or bonds to bend and vibrate. The matter gains kinetic energy which causes an increases in temperature. The absorption if radiation energy on matter causes an increases in temperature.
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The _____________ did not believe in the afterlife or the resurrection of the body.
The Sadducees did not believe in the afterlife or the resurrection of the body.
The Sadducees did not believe in resurrection of the dead, but believed (contrary to the claim of Josephus) in the traditional Jewish concept of Sheol for those who had died. Resurrection is the belief that after death one's departed soul will be restored, or resurrected, to a bodily life in heaven. Whereas the Sadducees denied the existence or influence of angels. In relation to salvation, only the Temple rituals were of benefit.
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Why does almond focus her research on helping people become more resilient to microaggressions rather than trying to prevent microaggressions from happening?
Almond focus her research on helping people become more resilient to microaggressions rather than trying to prevent microaggressions from happening because it may be practically impossible to prevent it it makes more sense to reduce its impact .
Because always try to solve the problem ,not try to end it .
What is microaggression ?
A microaggression is a comment or action that negatively targets a marginalized person or group .a microaggression can be intentional or accidental . it is form of discrimination .
People who engage in microaggressions may mean no harm toward the person or group being targeted. they may not even realise that they are making a microaggressive comment or action.
It can be very hurtful to the people who experience them.it may be verbal, nonverbal and are typically automatic .
Microaggression may demean a person's race , gender , sexsual orientation, heritage , age or health status .
Example : when a person says that wow you can speak english ,your english is very fluent ,implies that this is somehow unexpected because of the person's skin color or nationality.
It is usually clear when someone's behaviour is discriminatory such as when they use a racial slur.
Microaggression may be classified into three categories :
microassaults ,microinsults ,microinvalidation.
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Anatomic dead space greatly affects the efficiency of pulmonary ventilation.
a. true
b. false
The correct option is a. true.
Anatomic dead space greatly affects the efficiency of pulmonary ventilation is a true statement.
What is pulmonary ventilation?Breathing is the general name for pulmonary ventilation. The act of air into the lungs at inspiration (inhalation) and exiting the lungs during expiration is known as it (exhalation).
Some key points of pulmonary ventilation are-
The respiratory system, often known as pulmonary ventilation, supports breathing. Air is inhaled during pulmonary breathing through nasal and oral canals (nose or mouth). It passes into the lungs via the pharynx, throat, and trachea. After that, air is expelled and returns along the same path. Pulmonary ventilation is triggered by changes in the volume as well as air pressure within the lungs. Both diaphragm plus external intercostal muscle contract as the rib cage raises during a typical inhale. As the lungs expand, the air pressure decreases and more air rushes in. Normal exhalation causes the muscles to relax. Air is ejected, the lungs contract, and the air pressure increases.To know more about Pulmonary ventilation, here
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Cellulose is an example of a ________. polypeptide polysaccharide monosaccharide steroid
Cellulose is an example of a polysaccharide.
Plants produce a polysaccharide known as cellulose. It makes up a part of the cell walls. This substance is a polymer made up of many glucose monomers connected by glycosidic connections. They consist of a linear chain of β 1,4-linked d-glucose units that have been polymerized to varying degrees (from a few hundred to over ten thousand).
Compared to starch or glycogen, cellulose has a distinct structure and consequently different properties because of how the glucose molecules are bonded together. On cellulose, the hydrolyzing enzymes for starch do not function.
The majority of species cannot digest cellulose. Therefore it bypasses them (roughage). Termites and goats have microbes that help them digest cellulose; they don't actually do it themselves.
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Once glycogen stores are replenished, what role does the remaining oxidized glucose fill?
Answer:
d
Explanation:
why are silkworm economically importance?
Answer:
The silkworm litter is used for bio-gas production and used as a fuel for cooking in the rural area. Thus sericulture not only provides silk for fashionable clothings, it also provides several very useful bye products to the human society.
What hormone helps to maintain extracellular fluid (ecf) osmolality when concentrations become too high?
Vasopressin, also known as Antidiuretic hormone (ADH) helps to maintain extracellular fluid (ECF) osmolality when concentrations become too high.
When osmolality increases, it stimulates the body to produce Antidiuretic hormone (ADH). This hormone instructs the kidneys to retain more water inside the blood vessels as a result, the urine becomes more concentrated.
Osmolality refers to the concentration of dissolved particles of chemicals and minerals like sodium and other electrolytes in the serum. Osmolality increases when the body is dehydrated whereas, it decreases when too much fluid in present in the blood.
Antidiuretic hormone (ADH) or Vasopressin checks the amount of water reabsorbed from the nephrons. This regulates the water content of the blood which is termed as osmoregulation.
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What is the name for the linkage between sugar molecules (i.e., fiber) that cannot be broken by digestion?
β glycosidic is the name for the linkage between sugar molecules (i.e., fiber) that cannot be broken by digestion.
What is a Simple Sugar Molecule?Our bodies get their energy from a group of macromolecules called carbohydrates. Simple sugars are lengthy chains that make up the polymers known as carbohydrates
Some characteristics of simple sugar molecule are-
Monosaccharides, often known as simple sugars, are the fundamental component of carbohydrates. Dehydration synthesis, often known as a condensation reaction, is the mechanism that connects these simple sugars. Dehydration and synthesis both refer to the loss of water. Water cannot be added to a sugar molecule directly; it must first be taken out of the molecule before the two sugar molecules can be linked. This glue, known as a glycosidic linkage, holds these lengthy chains containing simple sugars together.As a result, both simple sugars and carbohydrates are categorized as organic compounds. In addition, all sugar molecules have a -ose ending. Examples of compounds with a -ose ending are glucose and fructose.
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The condition resulting in muscle spasms due to an abnormally low concentration of calcium in the blood is:________
The condition resulting in muscle spasms due to an abnormally low concentration of calcium in the blood is tetany.
What is tetany?Tetany is a condition marked by muscle spasms at irregular intervals. It is an involuntary muscle contraction.This is caused due to the defect in parathyroid glands resulting in deficiency of calcium in the blood.Muscle spasms are caused due to poor communication between neurons. As calcium is released as a neurotransmitter at the point of contact between two neurons (synapse), its deficiency prevents the transfer of signal from one neuron to the other resulting in muscle spasms.Tetany may lead to seizures, painful muscle cramps, numbness in feet and hands, heart problems, spasms of voice box.Learn about hyponatremia here:
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Blood typing is based on the presence of proteins known as __________ on the outer surface of the red blood cell plasma membrane
Blood typing is based on the presence of proteins known as antigens/antibodies on the outer surface of the red blood cell plasma membrane.
You can determine what type of blood you have by blood typing. Blood typing ensures that you can safely give blood and receive blood transfusions. Additionally, it checks to see if the Rh factor, which is found on the surface of red blood cells, is present.The four primary blood types are:
Type A Type B Type ABType OBlood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma
Blood group B – has B antigens with anti-A antibodies in the plasma
Blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma
Blood group AB – has both A and B antigens, but no antibodies
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