Answer:
The grasshopper cannot be in the same location it started because by 2017, it would have covered a distance of 1017576.5 to either left or right. and that distance is not an integer.
Explanation:
The grasshopper jumps in integer of 1 cm to either right or left
Calculating for the total distance covered in 2017 jumps
Total Distance = (2017 x 2018)/2 = 2035153 cm
To either right or left: this implies that the total distance be divided by 2
=> 1017576.5 cm
It shows that at some point, the grasshopper will not be in a position of integer on either right or left.
Therefore, it can not get to its initial point of start.
To prove that after 2017 jumps the grasshopper cannot be in the same location it started, we can calculate the total distance covered by the grasshopper. By using the formula for the sum of an arithmetic series, we find that the grasshopper would have covered a total distance of 2036171 cm after 2017 jumps. Therefore, the grasshopper cannot be in the same location it started.
Explanation:To prove that after 2017 jumps the grasshopper cannot be in the same location it started, we need to consider the distance covered by each jump. The grasshopper jumps 1 cm in the first jump, 2 cm in the second, and so on. We can observe that the distance covered in each jump is increasing by 1 cm. Therefore, after 2017 jumps, the grasshopper would have covered a total distance of 1 + 2 + 3 + ... + 2017 cm.
To find this total distance, we can use the formula for the sum of an arithmetic series: S_n = (n/2) * (a_1 + a_n), where S_n is the sum of the first n terms, a_1 is the first term, and a_n is the nth term. In this case, n = 2017, a_1 = 1, and a_n = 2017.
Substituting these values into the formula, we get S_n = (2017/2) * (1 + 2017) = 2017/2 * 2018 = 2036171 cm.
Based on this calculation, we can conclude that after 2017 jumps, the grasshopper would have covered a total distance of 2036171 cm. Since this distance is greater than zero, it is impossible for the grasshopper to be in the same location it started.
You've discovered a new plant species in which
green fruit color (g) is recessive to yellow fruit color (G), and
long fruit shape (l) is recessive to round fruit shape (L).
The genes for fruit color and shape are located on the same chromosome and are 12 m.u. apart.
Determine the proportions of progeny of each phenotype produced for this cross: Gl/gL x Gl/gL
The cross will produce progeny with different fruit color and shape phenotypes due to recombination on the same chromosome.
Explanation:The cross between Gl/gL and Gl/gL parents will produce four different phenotypes in their progeny: yellow long fruits (GL/L), yellow round fruits (GL/gL), green long fruits (gL/L), and green round fruits (gL/gL).
Since the genes for fruit color and shape are located on the same chromosome and 12 m.u. apart, recombination will occur.
The proportions of progeny for each phenotype will depend on the frequency of recombination events.
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The reason the hypodermis acts as a shock absorber is that
Answer:
The major part of hypodermis contain fat or adipose tissue that acts as shock absorber.
Explanation:
Hypodermis is a fatty layer of skin that is nearer to the muscle and contain fat and collagen cells.This layer acts as both shock absorber and protects the inner organ.
It also helps to store fats which provides energy to the body.
Hypodermis is known as the store house of lipids and contain adipose tissue containing fat storing cells.
This stored fat acts as energy reservoir,prevents loss of heat and also acts as cushion that protect the underlying layer thus it acts a shock absorber.
After twins are conceived, their chance of survival until birth depends on the prenatal circumstances. An early sonogram might reveal two developing organisms, but later only one embryo continues to grow. This is referred to as the _____ twin phenomenon.
Answer:
vanishing twin phenomenon
Explanation:
Vanishing twin phenomenon or Vanishing twin syndrome can also e referred to as disappearing twin syndrome. This phenomenon is used to describe the miscarriage or loss of one of two or more developing babies during the first trimester. One of the twins vanishes at the early onset of a multiple pregnancy. During this period, the fetal tissue of the said vanishing twin is absorbed by the other twin, placenta, other fetuses, or the mother.
Organisms inherit specific traits and characteristics from their parents. Albinism is an inherited disorder that occurs when an organism is unable to produce or distribute melanin. Melanin is a substance in the body that helps determine skin color, hair color, and eye color. Which is the basic unit of heredity that carries the trait of albinism from parent to offspring?A. base pairs
B. genes
C. proteins
D. codons
Answer: B. Genes
I hope that this helps you !
Answer:
B
Explanation:
Edge2020
The greater the mass of tissue in an organ, the greater its need for an adequate blood supply. Which chamber of the heart has the highest probability of being the site of a myocardial infarction?
Left ventricle .
Explanation:
Myocardial infarction commonly known as heart attack occurs when there is inadequate supply of blood to the heart.
Since the left ventricle of the heart is much thick when compared to other chambers, its oxygen demand is much more. To fulfill this oxygen demand it needs maximum supply of oxygenated blood.
Thus if the blood supply to heart is lowered due to any reason then the left ventricle will be affected at first becoming the most probable site of myocardial infarction.
The left ventricle has the highest probability of being the site of a myocardial infarction because it requires a significant amount of blood to supply its thick muscular walls, making it more vulnerable to disruptions in blood supply.
The chamber of the heart with the highest probability of being the site of a myocardial infarction is the left ventricle. This is because the left ventricle has a greater mass of tissue than any other chamber within the heart, due to its role in pumping oxygenated blood to the systemic circulation, which requires considerable force to reach the farthest points of the body, like the toes. The left ventricle's thick muscle walls need an adequate blood supply to function, making it more vulnerable to damage if the supply is disrupted, such as by a blockage in the coronary arteries that feed the heart muscle. Myocardial infarction, commonly known as a heart attack, occurs when cardiac muscle cells die due to a blockage of a coronary artery, halting the blood flow and the oxygen supply to that part of the heart muscle.
DNA replication is necessary for bacterial cell replication. One of the ways that antibacterials are effective is by inhibiting the DNA replication. Antibacterials often accomplish this by:
1. Encouraging the replication of the original DNA to form a new DNA strands.
2. Encouraging migration of the DNA strands to opposite sides of the cell.
3. Affecting the enzymes needed for DNA replication.
4. Assisting the supercoil to relax and unwind
Explanation:
Replication is the process by which cells duplicate their genetic material (DNA or deoxyribonucleic acid) before undergoing the process of cell division so that each copy of the duplicated DNA is incorporated in each of the daughter cells produced after the process of mitosis (cell division).The parent bacteria also transmit their genetic material to the daughter bacteria by the same process.There are many enzymes required for the process of DNA replication:DNA polymerase : synthesizes new daughter DNA strand.Helicase: unwinds the parental DNA double helix.Toposiomerase: uncoils the DNA supercoils.Primase: synthesize short fragments of RNA, called Primers, those provide the 3' hydroxyl group for the purpose of nucleotide addition by DNA polymerase.Ligase: anneals the Okazaki fragments generated on the newly synthesized lagging DNA strand.Antibacterials target to kill (bactericidal) or prevent the growth (bacteristatic)of bacteria. This is possible by inhibiting the process of replication in the bacteria. Replication can be inhibited by inhibiting any of the above enzymes which are necessary for the operation of the replication process in the correct manner.based on observational evidence, variations in the color of flamingos appears to be determined by their diet, an not their genes. Describe the steps of an investigation to provide evidence to support or refute this hypothesis.
In order to make a proper investigation using the scientific method we have to follow the following statements.
Create three or more groups of flamingos. One control group were the flamingos will be fed by their occasional diet. A second group with a diet with no artificial or natural dye, as β-Carotene, which is high present in seaweeds. The third group will have a diet with a high amount of β-Carotene. The color of the groups will be analyzed to see the changing of pigmentation by time. If the group which is fed by B-Carotene increases the pigmentation, it might indicate a diet factor. As counterproof, a sample of DNA of the groups has to be taken. If is there any pattern between the groups of no-colored flamingos and a pattern of colored ones. It can indicate a genetic factor. If not, the diet can be responsible for it.It is possible to carry out genetic crosses in order to observe the phenotypic proportion in offspring and thus confirm genetic inheritance.
Genetic inheritance can be traced by observing the proportion of offspring in a given cross.In diploid organisms, individuals receive two alleles (or gene forms) for a given gene locus.In complete dominance, the dominant allele completely masks the expression of the recessive allele in heterozygous individuals.In conclusion, it is possible to carry out genetic crosses in order to observe the phenotypic proportion in offspring and thus confirm genetic inheritance.
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Tracy had taken tennis lessons when she was very young and was a good tennis player while she was in school. However, she had not played tennis for years when she decided to enroll in a tennis class at college. At the tennis class, a moment after she picked up her racket, Tracy realized that she had shifted it to the correct forehand grip without even thinking. Tracy's _____ made this possible. Select one: a. implicit memory b. semantic memory c. psychomotor memory d. episodic memory
Answer:
A. Implicit Memory.
Explanation:
This form of memory presumably uses past experiences to remember things without thinking about them. It brings about the exhibition of past experiences, no matter how long ago those experiences occurred. It happens like an automatic response to the event been called to.
Only homologous characters are useful in constructing phylogenetic trees. True or False
Answer: True
Explanation:
In a culture grown in a chemostat (continuous culture), the best way to increase the yield of bacteria (numbers of cells per mL) would be to __________. View Available Hint(s) In a culture grown in a chemostat (continuous culture), the best way to increase the yield of bacteria (numbers of cells per mL) would be to __________. increase the growth rate increase the dilution rate (rate of addition of medium) increase the temperature increase the concentration of nutrients in the medium
Answer:
In a culture grown in a chemostat (continuous culture), the best way to increase the yield of bacteria (numbers of cells per mL) would be to increase the concentration of nutrients in the medium
Explanation:
A Continuous culture is to keep a culture growing indefinitely. This can be done if :
Fresh nutrients are continually suppliedAccumulated cells and waste products are removed at the same rateConditions such as temprature and pH are kept at their optimum values.The best way to increase the yield of bacteria (numbers of cells per mL) would be to increase the nutrients concentration in the medium.
Two populations of birds with somewhat different coloration live on opposite sides of a peninsula. The habitat between the populations is not suitable for these birds. When birds from the two populations are brought together, they produce young whose appearance is intermediate between the two parents. These offspring will breed with each other or with birds from either parent population, and all offspring of these pairings appear intermediate to various degrees. What keeps the two populations separate?
Answer:
fdagharae
Explanation:zdhadhdhraeh
Final answer:
Habitat isolation keeps the two bird populations separate as they occupy non-overlapping territories, preventing natural interbreeding. Over time, genetic drift, natural selection, and mutation can cause these populations to further diverge.
Explanation:
What keeps the two populations of birds separate despite their ability to produce offspring when brought together is a concept known as habitat isolation. Habitat isolation occurs when populations of a species move or are moved to new habitats where they no longer have overlapping territories with other populations of the same species. This lack of overlap prevents regular reproduction between the populations, leading to reproductive and genetic independence. The habitat between the two bird populations mentioned is not suitable for either, effectively isolating them from each other and preventing any natural interbreeding. Over time, forces such as genetic drift, natural selection, and mutation can cause the two isolated populations to diverge further, potentially leading to speciation - the formation of new and distinct species in the course of evolution.
The domestic dog, Canis lupus familiaris, has 39 pairs of chromosomes in each of its diploid somatic (body) cells. Therefore, the haploid sperm cells of a male dog created via meiosis will each contain ________ chromosomes.
Answer:39 chromosomes
Explanation; meiosis is a form of nuclear division that produces gametes with half the number of chromosomes in the parent cell.it involves two successive divisions to produce four daughter cells.meiosis occurs only in reproductive cells.
In this case,the dog has 39 pairs of chromosomes,which is 78 chromosomes.it would undergo meiotic division to produce the half number of chromosomes,which is 39 chromosomes.this 39 haploid chromosomes are contained in the sperm cells or in the egg cells.
When the egg and sperm fuses,the diploid number of chromosomes is restored.
The haploid sperm cells of a male dog created via meiosis will each contain 39 chromosomes.
What is meiosis?It is a form of nuclear division that generated gametes with half the number of chromosomes in the parent cell. It includes two successive divisions to generate four daughter cells. Meiosis arises only when there should be reproductive cells. Since there is 39 pairs of chromosomes so meiosis also contains 39 chromosomes.
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All of the following are concerns with regard to agricultural production and its effect on the environment except __________. A. increased water scarcity B. overfishing C. decreased soil salinity D. deforestation Please select the best answer from the choices provided. A B C D
Explanation:
Agriculture includes the following categories,Production of crops.Production of animals (livestock).Production of fishes.Maintenance of forestry.Increase in water scarcity adversely affect crop production as in the absence of sufficient amount of water the crops are unable to grow and produce fruits and grains.Overfishing adversely affect the aquatic ecosystem as it disrupts the food chain.Decreased soil salinity positively affect all the categories of agriculture as reduction in salt concentration in the soil make it easy for the plants to absorb water from the soil. Also, at lower concentration, the salts do not have any toxic impact on the plants.Deforestation causes soil erosion that in turn lowers the soil fertility as the soil is no longer held tightly by the roots of the plants. Also, it lowers the volume of fresh water available in the underground aquifers for human consumption as the roots of the plants are no longer available to hold water molecules between them.Answer:
c
Explanation:
An individual's ecological footprint is equivalent to: All of these choices are correct. the total amount of energy used by that individual. the total amount of carbon emissions from that individual's car. the total amount of food consumed by that individual. the amount of land required to provide all the resources used by that individual.
Answer:
amount of land required to provide all the resources used by that individual.
Explanation:
Here is the complete question:.
An individual's ecological footprint is equivalent to the:
A. total amount of food consumed by that individual.
B. total amount of energy used by that individual.
C. Total amount of carbon emissions from that individual's car.
D. amount of land required to provide all the resources used by that individual.
E. All of these choices are correct.
The answer is
amount of land required to provide all the resources used by that individual.
When a variegated female four o'clock plant is crossed with any male plant, progeny plants can have either green, white, or variegated leaves. Which of the following statements correctly explain this result? Select all that apply. a.The female plant produces some gametes that are homoplasmic. b.The female plant is heterozygous. c.The female plant produces some gametes that are heteroplasmic. d.The female plant is homozygous in some cells and heterozygous in other cells. e.Leaf phenotype is determined by the number of normal or mutant chloroplasts inherited from the female parent.
The correct statements are
a.The female plant produces some gametes that are homoplasmic.
c.The female plant produces some gametes that are heteroplasmic.
e.Leaf phenotype is determined by the number of normal or mutant chloroplasts inherited from the female parent.
Explanation:
The results clearly indicated that the phenotype of the progeny was clearly dependent on the female parent.
This is because the females have egg cells which are larger than the male’s pollens. Due to this large size, female egg cells have cellular organelles like mitochondria, chloroplasts etc; whereas, the smaller male cells are devoid of any organelle.
The variegation in a leaf depends upon the chloroplasts present in it and since only the female cells contain chloroplasts. The appearance of the green color depends upon the chlorophyll in the chloroplasts.
Hence when green leaves were propagated, the progeny also had green leaves. This clearly proves that the leaf phenotype is based on the female parent’s chloroplasts and homoplasmic or heteroplasmic phenotypes are accordingly produced in the progeny due to the female parent.
The female plant cannot be homozygous in some cells or heterozygous in other cells and need not be only heterozygous; the phenotype of the gamete only differs according to the female parent.
What evidence can you cite for the microscopic crystal nature of certain solids? For the macroscopic crystal nature?
Explanation:
x-ray diffraction and the macroscopic shape of crystals. X-ray diffraction is a nondestructive method generally utilized for the portrayal of smaller scale crystalline materials. The strategy has been generally applied for stage distinguishing proof, quantitative investigation and the assurance of structural flaws. Lately, applications have been stretched out to new territories, for example, the assurance of reasonably complex gem structures and the extraction of three-dimensional microstructural properties. This is the outcome of the higher goals of current diffractometers, the coming of high-power X-ray sources and the advancement of line-profile displaying ways to deal with conquer the line cover issue emerging from the one-dimensional information contained in a powder diffraction design.Which of the following is NOT true regarding the Maillard browning reaction? It is the reaction involved in when heating a sugar to a temperature greater than its melting point. It produces brown colored compounds. It requires a reducing sugar and an amine group from a protein. It is the reaction that involved in making caramel candies.
Explanation:
This procedure quickens in a basic domain in light of the fact that the amino testing don't kill. This response is the premise of the seasoning business since the sort of amino corrosive decides the subsequent flavor. All the while, several distinctive flavor mixes are made. These mixes thusly separate to frame yet progressively new flavor mixes, etc. Each sort of nourishment has an exceptionally unmistakable arrangement of flavor intensifies that are shaped during the Maillard response. It is these equivalent aggravates that enhance researchers have utilized throughout the years to make counterfeit flavors. The Maillard response ought not to be mistaken for Caramelization which happens with sugarsHence, the right answer is "It requires a reducing sugaer and an amine group from a protein"
The statement that the Maillard browning reaction is involved in making caramel candies is incorrect. It actually involves both a reducing sugar and an amine group from a protein and happens at high temperatures.
Explanation:The statement that is not true regarding the Maillard browning reaction is that it is the reaction involved in making caramel candies. In fact, the caramelization process is a completely different chemical reaction, involving the pyrolysis of certain sugars. The Maillard reaction, on the other hand, is a form of non-enzymatic browning which requires both a reducing sugar and an amine group from a protein. This Maillard reaction is responsible for the delicious brown color and flavor in foods such as seared steaks, toasted bread, and roasted coffee beans. It is a complex reaction that only happens at higher temperatures, generally above the melting point of the sugar involved.
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The hypothalamus is the part of the brain that regulates __________. A. hunger B. food preference C. achievement motivation D. the need for acceptance Please select the best answer from the choices provided
Explanation:
It has many functions including control of hunger, thirst, body temperature, sleep, parenting behaviors, and circadian rhythms. It is an incredibly intricate piece of the mind containing numerous locales with profoundly specific capacities. When an animal is not hungry, and it needs food are satisfied, it is called satiety.The hypothalamus plays a super-sized role by making decisions about what actions need to be taken by various endocrine glands throughout the body. Its primary purpose is to make sure that the body stays in a continual state of balance, known as homeostasis. There is a satiety center responsible for hunger. Hence, the right answer is option A "hunger"
Answer: The answer is a. hunger.
Explanation:
Hypothalamus is a ventral part of diencephalon. It has many functions including control of hunger, thirst, body temperature, sleep, parenting behaviors, and circadian rhythms.
When an animal is not hungry, and it needs for food are satisfied, is called satiety. There is satiety center responsible for hunger. The center is located in hypothalamus.
Which of the following statements about sterols is true? A) All sterols share a fused-ring structure with four rings. B) Sterols are found in the membranes of all living cells. C) Sterols are soluble in water, but less so in organic solvents such as chloroform. D) Cholesterol is the principal sterol in fungi. E) The principal sterol of animal cells is a hopanol.
Answer: Option A) All sterols share a fused-ring structure with four rings.
Explanation:
Sterols are a class of lipids containing the steroid nucleus with hydroxyl groups. The sterane nucleus has four rings fused together: 3 cyclohexane rings fused in a nonlinear manner and a terminal cyclopentane ring
A common example is cholesterol.
Among the provided statements, only 'All sterols share a fused-ring structure with four rings' is true. Sterols, including cholesterol, are a type of lipid with a structure consisting of four fused rings. The other statements about sterols provided are incorrect.
Explanation:The correct statement among the given options is A) All sterols share a fused-ring structure with four rings. Sterols, including cholesterol, are a type of lipid that are characterized by a carbon skeleton consisting of four fused rings. This is a specific feature of sterols. B) is incorrect as sterols are not found in all living cell membranes. C) is incorrect as sterols are insoluble in water and soluble in organic solvents. D) is also incorrect, ergosterol, not cholesterol, is the principal sterol in fungi. E) is incorrect as the principal sterol of animal cells is cholesterol, not a hopanol.
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What evolutionary events might have led to the presence of two genomic clones in pigs, and the discrepancies in their length compared to the cDNA probe? How is this representative of a general type of occurrence in molecular genetic evolution?
Answer:
Gene duplication
Explanation:
Gene duplication is an evolutionary process that includes different phenomena such as, among others, unequal crossover, chromosome rearrangement, chromosome duplication, etc. These duplicated genes are redundant in function and therefore they may accumulate mutations such as insertions or deletions at higher rates compared to single-copy DNA sequences, thereby producing homologous genomic fragments with different lengths
Answer:
They was likely a gene duplication
Explanation:
Evolutionary divergence tends to follow gene duplications, as variations in genes or mutation in one gene are no longer taken against as strongly so the individual gets a copy of a functional gene.
The ____________ is considered the autonomic control center of the body due to its regulation of hormone secretion, thermoregulation, food and water intake, and circadian rhythms.
Answer:
hypothalamus
Explanation:
The hypothalamus is a very vital part of the brain, which is situated at the base of the brain, and it is connected to the pituitary gland by nervous and chemical pathways. The hypothalamus is responsible for the stimulation of the release of several hormones of the body as well as regulates the activities most autonomic nervous system. Functions such as circadian rhythms, body temperature, behavior, release of hormones, homeostasis are controlled by the hypothalamus.
The blood left at the crime scene was from a male. Which dna profiles could have come from the suspect?
A 35 year-old man presents with a testicular mass. Beta-HCG and Alpha-Feto Protein blood levels are normal. A radical orchiectomy is performed. Grossly the mass is tan-white and nodular without hemorrhage. Microscopically it is composed of large cells with clear cytoplasm, visible cell membrane, fibrous septa and lymphocytes. What is your diagnosis?
Answer: Classic seminoma
Explanation:
The classic seminoma can be defined as the germ cell tumor of the testicles or mediastinum. It is a type of malignant neoplasm and is treated and curable stage of the cancer.
It has a survival rate of more than 95 % if it is detected during the early stages of diagnosis.
It originates in the germinal epithelium of the semniferous tubules. In this case the fertility of the person is not affected and sexual function also remains intact.
Officials associated with international track and field competitions have noted an increase in the number of athletes who use a synthetic form of erythropoietin. Athletes use this drug because it__.
Answer:
Athletes use this drug because it enhances their performance.
Explanation:
Erythropoietin is expressed principally in the cortical interstitial cells of the kidney, where its transcription is modulated in response to low oxygen levels (hypoxia).
The use of artificial or recombinant erythropoietin stimulates an increase in the production of red blood cells.
This in turn improves the oxygen carrying capacity of blood and enhances the aerobic performance of athletes.
The side effect of using artificial erythropoietin would be excess production of red blood cells (polycythaemia) leading to blood clots and possible heart attack.
Final answer:
Erythropoietin is used by some athletes as a performance-enhancing drug to increase oxygen delivery to tissues. However, it can be dangerous due to increased blood viscosity and strain on the heart.
Explanation:
Erythropoietin (EPO) is a glycoprotein hormone that stimulates the production of red blood cells. Some athletes use synthetic EPO as a performance-enhancing drug to increase their red blood cell counts, which subsequently increases oxygen delivery to their tissues. However, taking erythropoietin can be potentially dangerous because it increases the viscosity of the blood, making it difficult for blood to circulate within the body. This increased viscosity puts extra strain on the heart and can lead to serious complications, including death in extreme cases.
What is the kinetic energy of a roller coaster car that has a mass of 482kg that is descending feom the highest peak of the coaster which is known to be 75m tall and has a velocity of 37.9 m/s? The gravitational acceleration is 9.81 m/s^2. Must show all work, correct sig figs, and include correct units.
Answer: 346174.8 joules
Explanation:
Kinetic energy is the energy possessed by a moving object. It is measured in joules.
Kinetic energy = 1/2 x Mass x Velocity^2
Since mass of rollercoaster = 482kg
velocity = 37.9 m/s
Then, K.E = 1/2 x 482kg x (37.9 m/s)^2
= 0.5 x 692349.62
= 346174.81 joules
Thus, the kinetic energy of the descending rollercoaster is 346174.8 joules
During crossing over:__________. 1. Chromosomes become chromatin. 2. Chromatids exchange segments of genetic material 3. Chromosomes switch poles. 4. Chromatin becomes chromosomes. 5. Mitosis becomes meiosis.
Answer:
2
Explanation:
chromatids exchange segments of genetic material. aka sister chromatids I believe
1a. what is one phenotypic trait that is the same in mom, dad, and baby dragon
Answer:
. what is one phenotypic trait that is the same in mom, dad, and baby dragon
Appearance
Explanation:
All of them will look like a dragon in appearance, height, skin color, among others
Answer:
please need help with the answer
When the level of arterial carbon dioxide rises above normal: Select one: a. exhalation lasts longer than inhalation. b. the brain stem inhibits respirations. c. respirations increase in rate and depth. d. respirations decrease in rate and depth.
Explanation:
The term Hypercapnia or Hypercarbia is given to the body's response to excessive carbon dioxide. At the point when [tex]CO_2[/tex] levels become unnecessary, a condition known as Acidosis happens.Respiration is the biochemical process where organism's cell obtain energy when glucose and oxygen combine, and that result in the production of carbon dioxide, water and ATP.When arterial carbon dioxide level rises above normal, respirations increase in rate and depth due to the stimulation of the respiratory centers in the brain. These centers control the respiratory rate and depth based on chemical and pH changes in the blood.
Explanation:When the level of arterial carbon dioxide rises above normal, respirations increase in rate and depth. This is because a rise in carbon dioxide or a decline in oxygen levels in the blood stimulates an increase in respiratory rate and depth. The respiratory centers of the brain, stimulated by chemical and pH changes in the blood, control respiratory rate and depth.
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Which statement correctly describes how the nervous system interacts with the digestive system? A The nervous system extracts nutrients from the digestive system to maintain homeostasis. B The nervous system controls the speed at which food moves through the digestive system. C The nervous system provides structural support to the body as food moves through the digestive system. D The nervous system delivers the nutrients from the digestive system to cells and tissues throughout the body.
Answer:B The nervous system controls the speed at which food moves through the digestive system
Explanation:During digestion,the nervous system helps to control the actions that takes place.they stimulate digestive juices and the muscles of digestive organs.
The extrinsic nerves comes to the digestive tract from the brain and the spinal cord.they release chemicals; acetylcholine and adrenaline.
Acetylcholine causes the muscles of the digestive organs to squeeze and push the food through the tract.adrenaline relaxes the muscles and reduces blood flow to the organs.these occurs unconsciously.
The intrinsic nerves acts to speed up or delay the movement of food in the digestive tract and also the production of digestive juices.
Answer: The nervous system controls the speed at which food moves through the digestive system
Describe the role of smooth muscle in two human body systems other than the cardiovascular system.
Explanation:
Cardiac and skeletal muscle and cardiac(heart) are both striated in appearance, while smooth muscle isn't. Both Cardiac and smooth muscle are automatic while skeletal muscle is deliberate. Cardiovascular muscle is likewise an automatic muscle yet is progressively associated in structure to skeletal muscle, and is discovered uniquely in the heart. Smooth muscles move nourishment through the stomach related tract. In one's eye the pupillary sphincter muscles is answerable for contracting the size of the student. Smooth muscle developments keep up the supply routes' breadth. Smooth muscle controls wind stream in lungs. Heart muscles are striated not normal for smooth muscles. Cardiovascular muscles are found in the heart dividers and aorta while smooth muscles are found in most of blood vessels and internal organs.Answer:
Smooth muscles are type of tissue that are found in the walls of different organs like intestines, uterus and stomach,respiratory system etc.
Explanation:
The cell of smooth muscle is 3-10μm thick and 20-200μm long containing cytoplasm which is eosinophilic and have myofilaments.
The nucleus is centrally located and is cigar like shape when it contracts.
The cells of smooth muscle is surrounded by connective tissue by basal lamina.
Role-
It plays important role in the ducts of exocrine gland.It seals orifices like pyrolus,uterine wall and transport chyme through wave like contraction in intestinal tube.Myofibroblasts is a special type of smooth muscle that produce connective tissue proteins like collagen,elastin.