Answer: D
Explanation:
Photosynthesis and respiration include many ______ reactions, in which one compound loses one or more electrons and another gains it/them.
Photosynthesis and respiration include many Redox reactions, in which one compound loses one or more electrons and another gains it/them.
Photosynthesis is conversion of light energy into chemical energy. The electron transfer is a light driven and it is a redox reaction since it involves a path of chain of reactions involving electron transfer.
It uses energy to reduce CO₂ And to form glucose. When water molecules split, then sugar is formed due to the transfer of electrons from water to carbon dioxide i.e. electron lost by a compound is gained by other. It is an important phenomenon for the survival of life on the earth.
Respiration is also a redox reaction involving oxidation- reduction of a set of metabolic reactions. There lies a gain and loss of electrons simultaneously.
Glycolysis involved in Respiration is a ten-step process of Redox reactions that converts Glucose into Pyruvic acid. Also, Two NAD+ are reduced to become NADH.
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Sometimes debris, submerged trees, or fences can become hazards for those engaged in water rescues. These hazards are called?
Sometimes debris, submerged trees, or fences can become hazards for those engaged in water rescues. These hazards are called strainers.
A strainer can be any object which allows the water to pass through but obstructs the passage of a person. Examples of strainers include cars, trees, man-made barricades and debris.
Strainers are life-threatening obstacles which should be avoided while a person is in water. A strainer can trap a person very easily. It does not require much current to grab and submerge a swimmer.
If a person is on a boat or craft approaching a strainer, the best way to cope is to try to get to shore above it and navigate around the obstacle. However, a swimmer should aggressively work to swim around the strainer.
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Plant domestication occurred in north america by 10,000 years ago and included important cereal grains such as wheat, barley, and oats
a. True
b. False
The given statement is false that Plant domestication occurred in north america by 10,000 years ago and included important cereal grains such as wheat, barley, and oats.
The process of modifying wild plants and animals for human use is known as domestication. Between the Tigris and Euphrates rivers in Mesopotamia, people first tamed plants some 10,000 years ago (which includes the modern countries of Iran, Iraq, Turkey, and Syria).
In Mesopotamia, wheat, barley, lentils, and many kinds of peas were among the first domesticated plants. The development of agriculture and more durable civilizations began with the domestication of plants, which was a significant turning point for human history. It was no longer necessary for humans to go in search of game and plants to harvest for food.
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Explain how hormones, nervous system stimulation, and the volume, chemical composition, and osmolarity of the chyme affect motility in both the stomach and the duodenum.
Hormones control the different digestive enzymes that are secreted in the stomach and the intestine during the process of digestion and absorption.
Hormones, nervous system stimulation:
The medulla and the vagus nerve both play a role in receptive relaxation, which is when the smooth muscles of the stomach's body and fundus relax to allow the stomach to fill. The strength of the peristaltic waves that stir the chyme is controlled by the vagus nerve and the release of a few hormones (serotonin in the stomach and intestinal gastrin in the duodenum).
Due to a negative feedback loop that slows gastric emptying, motility is slowed when the sensory receptors in the wall of the duodenum detect a high degree of stretch, a low pH, a high lipid content, or a high solute concentration in the chyme. The vagus nerve and the duodenum-secreted hormones secretin, cholecystokinin, and gastric inhibitory peptide mediate this loop.
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Kylee has a rare neurological problem in which some of her neurons are dying and others cannot organize information from various neurons. this disease may be affecting the _____ of kylee's neurons
Kylee has a rare neurological problem in which some of her neurons are dying and others cannot organize information from various neurons. this disease may be affecting the cell body of Kylee's neurons.
The cell body, also referred to as a soma, is the central portion of a neuron. The cell body preserves the structural integrity of the neuron, houses the genetic material, and supplies energy to power operations. Like other cell bodies, a neuron's cell body contains a nucleus and specialized organelles. A damaged neuron can prevent impulses from reaching and leaving the brain, impairing muscle function or producing numbness in the area that was harmed. Peripheral nerves, the spinal cord, and the brain can all be affected by nerve injury.The creation of neurotransmitters, which is the most crucial step in the chemical processing of the neuron, is supported by the cell body.Hence when cell body of neurons is affected by a disease, neurons begin to die and get unorganized due to lack of neurotransmitters.learn more about Cell body here: https://brainly.com/question/13920046
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Does the Youth Service Project, or a Civic Organisation, or Community Service Centre help the community?yes\no collaborate
The answer to the question of whether the Youth Service Project, or a Civic Organisation, or Community Service Centre help the community is: Yes, they do help the community.
These are all parts of national integration and community building and development as young citizens are sent to different parts of a nation for a period of time to acclimatize with a different culture
What is a Youth Service Project?This is a national building and integration project that is used to help the community through Community Development Services.
These services can include, but are not limited to:
youth programs, battered women's centers, alcohol and drug rehabilitation centers, etcThese Community Development Services are important in national building efforts as people are rehabilitated into society and basic amenities are provided.
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The enzyme produced in the kidneys that may play a role in essential hypertension by promoting vasoconstriction is called ___________.
Answer:
the answer is Renin
Explanation:
The enzyme produced in the kidneys that may play a role in essential hypertension by promoting vasoconstriction is called renin.
Renin is an enzyme released by specialized cells in the kidneys called juxtaglomerular cells. It plays a critical role in regulating blood pressure and fluid balance.
It acts on a protein called angiotensinogen, which is produced by the liver and released into the bloodstream. Renin cleaves angiotensinogen to produce angiotensin I. Angiotensin I is then converted to angiotensin II by the action of the enzyme angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor.
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The mixed cranial nerve that projects to and from internal organs, muscles, and glands is the ________ nerve.
The mixed cranial nerve that projects to and from internal organs, muscles, and glands is the vagus nerve.
The longest and most intricate of the cranial nerves is the vagus nerve, commonly known as the X or 10th cranial nerve. The vagus nerve travels from the brain to the belly through the face and thorax. The nerve is mixed and has parasympathetic fibres.
Because it has both afferent (sensory) and efferent (motor) fibres, the vagus nerve is a mixed nerve. This means that in addition to sending motor impulses to the organs it innervates, it is also in charge of returning sensory data from these organs to the brain.
Therefore, The mixed cranial nerve that projects to and from internal organs, muscles, and glands is the vagus nerve.
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Hich physiologic change increases cardiac work but does not enhance cardiac output?
Increased afterload physiologic change increases cardiac work but does not enhance cardiac output.
What about cardiovascular system?Heart and blood vessels, which make up your cardiovascular system, deliver oxygen and nutrition to your body's organs so they can function. Blood vessels also transport waste such as carbon dioxide to be disposed.Conditions affecting the heart or blood vessels are collectively referred to as cardiovascular disease. It is frequently associated with atherosclerosis, an accumulation of fatty deposits in the arteries that increases the risk of blood clots.The heart, blood arteries, and blood make up the cardiovascular system. Its main job is to carry deoxygenated blood back to the lungs and to carry nutrients and oxygen-rich blood to all regions of the body.The most typical cause of coronary artery disease is atherosclerosis, which is a buildup of fatty plaques in your arteries. Atherosclerosis can be brought on by unhealthy lifestyle choices such smoking, being overweight, not exercising, and eating poorly.Learn more about cardiovascular system here:
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Plasma contains more sodium than chloride. How can this be if individual ions of sodium and chloride exactly balance each other out, and plasma is electrically neutral?.
In addition to chloride, there are other negatively charged molecules in plasma. The extra sodium restores the balance of the overall negative charges.
So this is how plasma is electrically neutral.
The makeup of bodily fluids:High levels of sodium, chloride, bicarbonate, and protein can be found in the plasma. High levels of salt, chloride, and bicarbonate but a relatively low level of protein can be found in the IF. The ICF, on the other hand, contains higher levels of protein, phosphate, magnesium, and potassium.What occurs when the plasma Na+ content rises?Although the plasma sodium concentration does not provide any information regarding the volume of extracellular fluid, it does allow for an assumption regarding intracellular volume. A rise in plasma sodium (plasma osmolality) causes water to be drawn out of the cell, which causes the intracellular volume to decrease.Why does plasma have a higher sodium content than chloride?In plasma, sodium predominates over chloride. In addition to chloride, there are other negatively charged molecules in plasma. The extra sodium restores the balance of the overall negative charges.To learn more about plasma charge visit:
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The anterior pituitary gland is controlled by regulatory hormones secreted by the ______.
Answer:
The anterior pituitary gland is controlled by regulatory hormones secreted by the neurosecretory cells present in the hypothalamus.
Conduction of sound from the middle ear to the internal ear occurs via vibration of the?
Conduction of sound from the middle ear to the internal ear occurs via vibration of the Stapes.
Stapes is bone present in the middle ear which is stirrup in shape.
It helps in the transmission of vibrations from the incus of middle ear to the inner ear.
It is the smallest bone in the human body that is present in the middle ear after incus.
It is connected to oval window of the inner ear.
Stapes is less than 3mm in length.
Structure of stapes:
Inferior crusSuperior crusThey help in sending vibrations to the bone.
Malleus, Incus and stapes make up a chain of three bones present in middle ear called Ossicles.
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What percent of blood from digestion passes through the liver before returning to the heart?
100% of the blood from digestion passes through the liver before returning to the heart.
The hepatic portal system is the venous system that returns blood from the digestive tract and spleen to the liver. The raw nutrients in the blood are processed in the liver before the blood returns to the heart.
The hepatic portal vein supplies 75% of the blood to the liver, while the hepatic arteries supply the remaining 25%.
In the liver, carbohydrates and amino acids can be stored or used to synthesize new proteins and carbohydrates.
The liver also extracts vitamins and cofactors from the blood for storage, as well as filters any toxins that may have been absorbed along with the food.
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What device on a resuscitation bag-mask device may prevent sufficient tidal volume?
In these patients, a safety valve on a resuscitation bag-mask device may prevent adequate tidal volume delivery.
What is resuscitation bag-mask device?A bag valve mask, also known as an Ambu bag, is a portable device utilized to provide positive pressure air circulation to any subject who has inadequate or ineffective breaths.
It consists of a self-inflating bag, a one-way valve, a disguise, and a reservoir of oxygen.
Bag-valve-mask (BVM) air circulation is a life-saving skill. This basic airway management method enables patients to be oxygenated and ventilated until a more definitive airway can be established.
Thus, as a result, a safety valve on a resuscitation bag-mask device may prevent adequate tidal volume delivery in these patients.
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Ion exchange molecules in the plasma membrane of the parietal cells exchange __________ ions going out for __________ ions coming in.
Ion exchange molecules in the plasma membrane of the parietal cells exchange "bicarbonate ions" ions going out for "chloride" ions coming in.
What is plasma membrane?The semi-fluid living substance known as protoplasm, also known as plasm, is found inside each cell. This biological membrane, known as the plasma membran, houses the living material or plasma.
The plasma membrane is made up of lipids and proteins, just like every other cellular membrane. The phospholipid bilayer, which creates a permanent separation between two aqueous compartments, is the membrane's basic structural component. These divisions are the inside and exterior of the cell in the situation of the plasma membrane. The particular tasks of the plasma membrane, such as the selective transport of chemicals and cell-cell recognition, are carried out by proteins embedded inside the phospholipid bilayer.It supports the body's pH balance, blood volume, blood pressure, immunity, and blood coagulation.To know more about plasma membrane, here
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The ______ lies in the mediastinum posterior to the sternum and between the lungs.
The Thymus lies in the mediastinum posterior to the sternum and between the lungs.
What's the thymus gland?The thymus gland is a small organ in the upper chest, beneath the breastbone. It produces white blood cells known as lymphocytes, which help the body fight infections.Where does the thymus gland lie?The thymus gland is located in the upper anterior (front) part of the chest, directly behind the sternum and between the lungs. The organ is pinkish-gray in color and has two thymic lobes.To learn more about Thymus gland from the given link
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Disease that is characterized as having lack of energy and protein is called?
Answer:
Sounds closest to: Kwashiorkor
Explanation:
Kwashiorkor is a disease brought on by severe protein malnourishment. In Kwashiorkor, extended breastfeeding and late, insufficient weaning lead to low calorie intakes but significantly superior biological value. As a result, a kid with kwashiorkor will likely experience compromised organ function and development. Sudden outbreaks of diseases like the measles, gastroenteritis, or pneumonia exacerbate the issue by increasing needs while maintaining low intakes. The kid may exhibit oedema of the face and lower limbs, failure to grow, anorexia, diarrhea, lethargy, dermatosis, flaky-looking skin, scant, soft, and thin hair, angular stomatitis, cheilosis, and anemia as a result of this scenario.
This is a bit similar to Marasmus.
But there is a difference.
But ⇒ how does kwashiorkor and marasmus differ?
Kwashiorkor is predominantly a protein shortage, despite adequate calorie intake. When a youngster is weaned off of protein-rich breast milk, it frequently happens. The patient will show signs of oedema, an enlarged abdomen, and other conditions.
Marasmus is a total energy shortage that causes a body weight that is at least 60% below normal. The victim will only be malnourished.
The hindbrain of the embryo develops into the pons, the medulla oblongata, part of the spinal cord, and what other structure?
The hindbrain of the embryo develops into the pons, the medulla oblongata of the spinal cord and the cerebellum.
What is the cerebellum?The cerebellum is a prominent part of the hindbrain and is located just above the brainstem. The cerebellum controls all the voluntary movements of the body and is also responsible for maintaining balance and posture.
The cerebellum is said to make up for 10% of the brain's volume but has more than 50% of the brain's total neurons.
The cerebellum is made up of two parts; a cerebral cortex, a layer made of folded tissue which contains most of the neurons and cerebral nuclei, an inner part which contains the neurons responsible for communication.
Therefore, the hindbrain develops into the pons, medulla oblongata and cerebellum.
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What is the magnitude (amplitude) of an action potential?
a. 30 mv
b. 70 mv
c. 100 mv
In the apple maggot fly, rhagoletis pomonella, the frequency of certain alleles increases steadily as one goes from north to south. this is an example of:_______
In the apple maggot fly, the frequency of certain alleles increases steadily as one goes from North to South. This is an example of: Sympatric speciation.
Sympatric speciation is observed when there are no physical barriers which prevent any members of a species from mating with another, and all members are in close contact to one another. A new species, possibly established on a distinct food source or trait seems to develop instinctively.
The example of apple maggot fly supports a model for sympatric speciation in progress. Hawthorn is the native host for the apple maggot fly in North America. However, in the mid-1800s, a new population developed on introduced, domesticated apple.
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The protein gp120, involved in binding to the cell surface of host cells, is a glycoprotein. This means that is linked to what nonproteinaceous molecule?.
The protein gp120, involved in binding to the cell surface of host cells, is a glycoprotein. This means that is linked to what non-proteinaceous molecule an oligosaccharide
Definition and Classification of Oligosaccharides :
Oligosaccharides are carbohydrate chains containing 3–10 sugar units. However, carbohydrates with up to 20 residues or even disaccharides. Oligosaccharides can be made of any sugar monomers, but most research has been carried out on fructooligosaccharides (e.g., oligofructose) and galactooligosaccharides (e.g., raffinose, human milk oligosaccharides). Few oligosaccharides are hydrolyzed and absorbed in the small intestine (e.g., maltotriose), but nearly all enter the colon intact (nondigestible oligosaccharides).
What are non - proteinaceous molecules ?
Amino acids are classified as non-protein when they are not part of the 22 such molecules that are translated into proteins by the standard genetic code. They are found in nature, both in biology and extraterrestrial chemistry.
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All of the individuals of the same species living within a specified area is known as a?
The group of individuals belonging to the same species living within a specified area is known as a population.
What is meant by population?A group of individuals of the same species who interbreed and live in a particular area is called a population. The individual members of the population live on the same resources and experience the same kind of environment.
The members of a population always rely on each other for their survival. In fact, the study of a population is dependent on the study of interactions between the members of the population and also the interactions of the members with their environment.
Demographic parameters are statistical tools for objectively studying populations. The branch of science where these parameters are studied is called demography. Demography is also defined as the study of population characteristics.
Therefore, the individuals of the same species living within a specified area are known as population.
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What is one of the documented health hazards from chronic use of anabolic steroids that develops?
One of the documented health hazards from chronic use of anabolic steroids is the development of liver tumors.
Anabolic steroids are the synthetic substances which resemble the male sex hormone, testosterone.
Health care experts use anabolic steroids to treat some hormone problems in men such as delayed puberty as well as muscle loss (resulting from some diseases). However, some people misuse anabolic steroids.
Chronic use of anabolic steroids, has been linked to many health-related issues such as acne, hampered growth in teenagers, high blood pressure or hypertension, fluctuations in cholesterol levels, cardiac problems like heart attack, liver disease including cancer, kidney damage as well as aggressive behavior.
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What mechanism of evolution would tend to favor adaptations that reduce competition between species living in the same place?.
Natural selection mechanism of evolution would tend to favor adaptations that reduce competition between species living in the same place.
According to the theory of natural selection, features that may be passed down enable animals to adapt to their environment more effectively than other members of their own species. As a result, the species evolves because it can survive and reproduce better than other members of the species. One of the mechanisms or causes of evolution is natural selection. Physical or behavioral characteristics that help an organism fit in with its surroundings are called adaptations. Random mutations result in heritable variation.Natural selection may result in speciation, the process by which one species gives rise to another that is utterly separate. It is one of the mechanisms that propels evolution and contributes to the understanding of the variety of life on Earth.learn more about Natural selection here: https://brainly.com/question/524043
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How is this discovery an example of the importance of how the scientific community works? Include in your answer what the phrase ""cross-applications"" means
The scientific community is diverse network that interesting scientists. Its included working on particular scientific fields and within particular institutions, cross application and interdisciplinary activities are significant only.
Discovering is multi disciplinary peer reviewed open access journal passionate to publishing the research on diversity of scientific fields. Discovery serves as a form for exchange of views and ideas among researches.
This made of researchers, students , lab technicians , the people who works at scientific journals , employees at funding agencies , that helps in science govern itself and move forwarded. Its aim to process of science. And members of scientific community works together and help in inspire new ideas.
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The autoimmune disease in which there is rapid reproduction of skin cells resulting in patches of scaly, thick skin is:__________
The autoimmune disease in which there is rapid reproduction of skin cells resulting in patches of scaly, thick skin is Psoriasis.
Psoriasis is a frequent, chronic condition that has no cure, since it's an autoimmune. The illness frequently goes through cycles where it will flare up for a few weeks or months before decreasing. Infections, cuts, burns, and specific drugs are common psoriasis triggers in persons with a hereditary predisposition to the condition.
There are several types of psoriasis, each of which varies in its signs and symptoms:
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After oxygen enters the lungs, which statements best describe its path as it reaches the tissues in the body?
The statement ' oxygen passes through the bronchi, into bronchioles , and into alveoli is the best describe its path as it reaches the tissues in the body.
There, it diffuses into red blood cells within capillaries and is transported to the tissues cells of the body. The oxygen moves from the alveoli to the blood through capillaries lining the alveolar walls. In human body, oxygen present in the air and reaches to lungs through upper and lower respiratory tract. Air first enters the body through the nasal and oral cavity and many other region and finally reaches the lungs.
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Photosynthetic and chemosynthetic organisms can be called primary producers because they make their own food?
Heterotrophs are organisms that must consume food from other organisms because they are unable to synthesize their own food molecules.
What is heterotrophs?An organism is referred to be a heterotroph if it is unable to manufacture food on its own and must obtain it from other sources of organic carbon, primarily plant or animal materials. Heterotrophs are primary, secondary, and tertiary consumers in the food chain but not producers.Because they eat producers or other consumers, heterotrophs are referred to as consumers. Humans, dogs, and birds are all instances of heterotrophs. In a food chain, a group of creatures that supply energy and nutrients to other organisms, heterotrophs occupy the second and third levels.An organism is referred to as a heterotroph if it consumes other plants or animals for food and energy. Its origins are in the Greek words hetero, which means "other," and trophe, which means "nutrition." Autotrophs and heterotrophs are two main classifications of organisms depending on how they receive energy and nutrients.Learn more about heterotrophs here:
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If cardiac muscle cells were prevented from undergoing aerobic metabolism, they ultimately would ________.
Answer:
If cardiac muscle cells were prevented from undergoing aerobic metabolism, they ultimately would stop contracting.
What are the peak months for nitrate-nitrogen discharge from the mississippi river into the gulf? why do you think this is?
April, May and June are the peak months for nitrate-nitrogen discharge from the mississippi river into the gulf.
At the study sites, the spring (April, May, and June) FN nitrate-nitrogen flow typically comprised 40 and 50 per cent of the total annual FN nitrate-nitrogen flux. Using a new statistical technique, the Conservation Effects Assessment Project considers how nitrate-nitrogen behaviour changes over time. And generates flow-normalized estimates of nitrate concentration and flux unaffected by random variations in streamflow, changes in nitrate concentration and flux between 1980 and 2008 at eight sites in the Mississippi River basin were calculated.
These modifications might have negated the gains made by implementing conservation policies. Although nitrate -nitrogen concentration and flow increases may have been more significant without these strategies, conservation practices may still have had a favourable impact.
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