The immune system wrongly attacks the brain and nerves, which results in multiple sclerosis. Thus, Multiple sclerosis is brought about by _____immune system_____.
What is multiple sclerosis ?Multiple sclerosis doesn't have a known etiology. A body's immune system attacking its own tissues is regarded as an autoimmune disease. The fatty substance that covers and shields the nerve fibers in the brain and spinal cord in MS is destroyed by this immune system error (myelin).
The myelin sheath, a layer that surrounds and shields the nerves, is attacked by the immune system in MS. As a result of the damage and scarring to the sheath and possibly the underlying nerves, messages moving along the nerves slow down or are disrupted.
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Darwin discovered that some
individuals are more suited to their
environment and that these
individuals were more likely to
survive and reproduce. What did
he call this phenomenon?
DNA replication
Evolution by natural selection this is answer
Answer: it is evolution
Explanation:
The body loses water in a variety of ways. Put the water output mechanisms in order from greatest contribution to fluid loss (1) to least contribution to fluid loss (4) per day.
The maximum to minimum body water loss occurs by: Urine production, Skin losses, Lung respiration and minimum by Feces
What are the ways in which body loses water ?Through breathing, sweating, and peeing, the body continuously loses water. You become dehydrated if you don't drink enough water or other liquids.
The majority of fluid loss happens through the stools, sweat, and urine, but it's not only those things. The quantity of body fluid lost daily through the skin, respiratory system, and water in the feces that cannot be readily measured is known as insensible fluid loss.
Physical exercise also influences increased respiratory water loss due to the increased expiratory volume and frequency of breathing. Various environmental elements like temperature, humidity, radiation, and atmospheric pressure mostly affect sweating and urine water loss.
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what are 3 requirements for a trait to become more common over time in a population ?
The three requirements for a trait to become more common over time in a population area;
inbreeding among the populationno random selection of genesno immigration of species occurWhat are traits?Traits are qualities or characteristics that are shared between living organisms as a result of the transfer of these traits from parents to offspring.
Traits are determined by genes.
Genes are the basic unit of inheritance. Genes are regions of DNA that code for a particular product.
The combination of the genes present in an organism is responsible for the traits that are observed in organisms.
The combination of genes in an organism is known as the genotype whereas the observable traits in an organism is known as the phenotype.
Genes for a particular trait in an organism have alternate forms known as alleles. When an organism has similar copies of the allele for a trait, the organism is said to be homozygous for that trait, but when an organism has different alleles for a trait, the organism is said to be heterozygous for that trait.
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5. This discovery has been turned into a gene editing tool (CRISPR). Describe
how it works. (You need to listen to quite a bit of the podcast to understand
this)
Answer:
CRISPR is a genome editing tool that edits DNA
Explanation:
which of the following iucn conservation categories would be a priority for protection of a species, compared to others?
920 species have been prioritized as being Endangered or Critically Endangered (IUCN) AND limited to a single remaining location, including mammals, birds, amphibians, reptiles, conifers, and reef-building corals.
Explain about the IUCN?The IUCN is the foremost authority on the state of nature and the steps that must be taken to protect it. Its expertise are divided into six Commissions: one for ecosystem management, one for social and economic policy, one for environmental law, one for protected areas, and one for education and communication.
The IUCN has grown to be the world's foremost authority on the state of the natural world and the steps that must be taken to protect it since its founding in 1948. For human advancement, economic development, and nature conservation to occur simultaneously, the information and resources that IUCN offers are essential.
The International Union for the Conservation of Nature (IUCN), officially known as the International Union for the Conservation of Nature and Natural Resources and formerly known as the World Conservation Union, is a network of environmental organizations.
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read each description below and determine whether or not it describes a function or property of cerebrospinal fluid. then, click and drag each box into the appropriate category below based on whether it is a true or false statement about cerebrospinal fluid (csf).
Produces antibodies in response to antigen exposure in the brain tissue provides the brain with oxygen (Dura Mater, which is Latin for "Hard Mother").
True characteristics or functions of CSF include preventing concussions, influencing the flow of CSF, significantly reducing brain weight, and maintaining the concentration of glycine around the brain. CSF is produced by the choroid plexus. Found in the ventricles of the heart and brain (true property: Found in the ventricles of brain and Spinal cord).Protects brain tissue from blood toxins and the glucose levels in the CSF are higher than those in the plasma.CSF is created by the choriod plexus and reabsorbed into the blood of the venus sinus. The fluid that fills and shields cavities in the brain and spinal cord is called CSF, and it is the clear, colourless substance that is created in the ventricle of the brain. CSF participates in circulation, provides chemical and mechanical protection, and offers both.To know more about brain check the below link:
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Which of the following cranial nerves is mispaired?A. trochlearB. opticC. facialD. abducensE. accessory
The cranial nerve which is not correctly paired is (D) Abducens-V.
Cranial nerves are those nerves which originate precisely from the brain. By convention, there are twelve pairs of cranial nerves that are present in the brain. The Abducens nerve is the sixth (VI) cranial nerve. It is associated with one's ability to move the eyes. The Trigeminal nerve is the fifth (V) cranial nerve.
The question is incomplete. The complete question is:-
Which one among the following cranial nerves is not paired correctly ?
(A) Trochlear - IV
(B) Optic - II
(C) Facial - VII
(D) Abducens - V
(E) Accessory - XI
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ucu to ucc in a bacterium there is mutation in the gene for the repressor protein of the lac operon when lactose is present how owuld this mutation affect the function of the lac operon
The mutation in the gene for the repressor protein of the lac operon when lactose is present, the lac repressor loses its ability to bind DNA.
What is the lac operon?The lаc operon is а group of genes with one promoter thаt encodes proteins to use lаctose, аs аn energy source for enteric bаcteriа. Enteric bаcteriа аre bаcteriа found in the intestines.
Since glucose is much eаsier to breаk down thаn lаctose, the lаc operon will only turn on if there is no glucose present аnd only lаctose present. In order to determine when to turn it on, the lаc operon contаins two regulаtory proteins thаt function аs sensors. The lаc repressor is аble to sense the аmount of lаctose, аnd the cаtаbolite аctivаtor protein (CАP) is аble to sense the аmount of glucose. Both the lаc repressor аnd the CАP аre bound to the lаc operon DNА аnd аssist with trаnscription bаsed on the аmount of lаctose аnd glucose.
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What is an
example of a
physiological
adaptation in
emperor penguins?
A. the coloring of their bodies to camouflage in the water
B. huddling together in the winter and rotating to keep
warm
C. controlling their heart rates to slow down to use less
oxygen and go longer without food this is the answer
Answer:
C. controlling their heart rates to slow down to use lessoxygen and go longer without food
Explanation:
An example of a physiological adaptation in emperor penguins is controlling their heart rates to slow down to use less oxygen and go longer without food.
Emperor penguins are adapted to live in the extreme cold of the Antarctic. They have several physiological adaptations that allow them to survive in this environment. One of these adaptations is their ability to control their heart rates. When they are swimming or diving, emperor penguins can slow down their heart rates to conserve oxygen and go longer without food. This allows them to conserve energy and survive in the cold water.
Other physiological adaptations in emperor penguins include their thick layers of blubber, which help to insulate their bodies and keep them warm, and their specialized feathers, which help to reduce heat loss from their bodies. These adaptations allow emperor penguins to thrive in the harsh conditions of the Antarctic.
Carbon forms the basis of all the following except _____.
Choose one:
-fats
-nucleic acids
-sugar
-metals
The examples of Washoe and Binta Jua show that animals:
a. may be able to apply rules and standards to situations
b. may have some capacity for moral behavior
c. have some sense of duty
d. can cultivate the full range of virtues
The examples of Washoe and Binta Jua show that animals may have some capacity for moral behavior.
The true choice is B.
Washoe, a female chimpanzee was the first animal to learn to communicate using American sign language, as part of animal studies to determine their ability to learn the language.
Binta Jua is a gorilla who has caught the world's attention by saving a boy's life. A child is known to have fallen more than 20 meters into the gorilla's habitat at the Brookfield Zoo in Chicago, Illinois. When she learned about this incident, Binta Jua immediately ran to save the child and lifted her with her strong arms. He then carried her to a safe place and held the child like his own.
The examples of the two animals can be categorized as moral behavior. Binta Jua had managed to save a child and Washoe had the animal's mental level to learn the language.
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Which of the following most likely would be an immediate result of growth factor binding to its receptor?
a. protein kinase activity
b. adenylyl cyclase activity
c. GTPase activity
d. protein phosphatase activity
e. phosphorylase activity
Protein kinase activity would be an immediate result of growth factor binding to its receptor.
Thus, the correct answer is A.
What is the growth factor?Growth fаctors аre smаll extrаcellulаr ligаnds thаt trаnsmit signаls between cells аnd their environment. They cаn control cell function by binding to trаnsmembrаne receptors, аctivаting а myriаd of different intrаcellulаr signаling pаthwаys. Growth fаctors commonly bind to the receptor tyrosine kinаse fаmily of trаnsmembrаne receptors (RTKs).
RTKs hаve аn extrаcellulаr domаin thаt binds to ligаnd, а trаnsmembrаne domаin, аnd аn intrаcellulаr domаin thаt hаs tyrosine kinаse аctivity. Once bound to ligаnd, the RTKs dimerize, аnd trаnsphosphorylаte on tyrosine residues. This usuаlly leаds to the binding of аdаpter proteins to the phospho-tyrosine residues, leаding in turn to а cаscаde of events within the cell.
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the fact that the human brain is not completely developed at birth means that___greatly influence(s) human brain development.
The fact that the human brain is not completely developed at birth means that environment greatly influence(s) human brain development.
Human brain development is a complex procedure and unlike other organs, the human brain is not completely developed at the time of birth.
Apart from the development inside the mother, the environment also has a major influence on the development of the human brain.
This is the reason, the brain of each person is influenced by the exposure to the environment that he gets. The development of the cognitive brain is associated with various environmental aspects of society. Hence, not all of the brain of a person has been developed at the time of birth.
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although a deletion heterozygote carries one normal chromosome, it may still exhibit a mutant phenotype if the deletion removes a gene that is
In diploid organisms, loss of heterozygosity (LOH), a type of genetic anomaly, refers to the loss of one copy of a complete gene and the surrounding chromosomal area.
One copy of the missing gene is still there since diploid cells contain two copies of each of their genes, one from each parent.In diploid organisms, loss of heterozygosity (LOH), a type of genetic anomaly, refers to the loss of one copy of a complete gene and the surrounding chromosomal area. One copy of the missing gene is still there since diploid cells contain two copies of each of their genes, one from each parent.However, there is no longer any heterozygosity, which refers to minute variations in the gene versions acquired from each parent.
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A neuroscientist is interested in seeing how quickly groups of neurons can respond to a complex
sequence of stimuli. Which parameters would be most important for measuring responses given
the technique she chooses to use?
EEG stands for electroencephalography, a procedure in which electrodes are tiny detectors that are applied to the scalp using a cap or a headset. The electrical activity of clusters of neurons that simultaneously transmit electrical impulses with a similar pattern is measured by EEG.
What method is the most widely used to gauge brain activity?Electroencephalography (EEG), magneto encephalography (MEG), and functional magnetic resonance imaging (fMRI) are the three most popular and often utilized measurements (EEG). EEG is the most adaptable and economical approach among these techniques.
Which of the following can be used to assess the neuronal activity of the brain?An EEG can identify variations in brain activity that may help in the diagnosis of several brain illnesses, including epilepsy or another seizure disorder.
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What primary consumers live in the Colorado plateau, what do they eat?
Answer:
Primary consumers make up the second level of the food pyramid and are also known as herbivores. They eat only primary producers such as plants or algae and nothing else. Their main predators are secondary consumers or sometimes also intermediate predators and top predators.
What role does correctly giving credit to the real researcher play in any academic writing?
To prevent plagiarism in your writing, sources must be properly cited. When ideas, facts, and language you use were actually written by another author, improper citation of sources could give the impression that they are your own. Plagiarism is more than simply using another author's words verbatim.
How significant is it when writing an academic paper to properly credit the original author?Why citing is crucial. For several reasons, it's crucial to cite the sources you used for your study: by citing the sources you used to gather your information, you can convince your audience that you did thorough research. to acknowledge the work of other scholars and give them due credit for their contributions.
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If you are watching a bird fly from one tree to another, the _____ is responsible for tracking that object.
red nucleus
thalamus
suprachiasmatic nucleus
superior colliculus
hypothalamus
The correct option is A; Red nucleus , If you are watching a bird fly from one tree to another, the Red nucleus is responsible for tracking that object.
Anatomists have long debated the anatomical nature and content of the red nucleus. This midbrain region is vital for movement, and numerous theories propose that it changed drastically with the evolution of bipedalism.
Because there is still considerable disagreement in the scientific community about this structure, this article will concentrate exclusively on the anatomical and functional properties that have been agreed upon within the arena.
The efferent and afferent pathways, gross anatomy, and clinical points associated with the nucleus will be highlighted in particular.
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neurons are specialized to send stimuli to the brain, whereas ___ neurons send signals to the effectors of the nervous system.
The neurons are specialized to send stimuli to the brain, whereas _sensory neurons send signals to the effectors of the nervous system.Sensory (afferent) neurons – afferent neurons are specialised to stumble on stimuli and transmit the statistics to CNS.
Neurons ship and get hold of electric indicators to talk with every different withinside the fearful device and with different styles of cells withinside the frame, specially muscle mass. At one cease, neurons have branch-like projections referred to as dendrites that permit them to get hold of indicators.
For example, sensory neurons ship statistics from the eyes, ears, nose, tongue, and pores and skin to the mind. Motor neurons convey messages farfar from the mind to the relaxation of the frame to permit muscle mass to move. Sensory afferent neurons deliver statistics from tissues and organs into the principal fearful device. Efferent neurons transmit indicators from the principal fearful device to the effector cells and are on occasion referred to as motor neurons.
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Tephroite ( a type of mineral ) important uses
( another uses than making jewerly and genstone )
(it'd might say Biology, but this is geology and there no such thing as geology when putting in school level and subject)
The minerals of the olivine group such as tephroite are used for a umber of different purposes such as in the conditioners, for the making of jewellery.
What are the uses of Tephroite?Tephroite is the manganese end-member mineral of the olivine group of the nesosilicate minerals. The formula of Tephroite is Mn₂SiO₄. It is a solid solution series which exists between the tephroite and its analogue mineral substances, such as the group endmembers fayalite and forsterite. Divalent iron or magnesium atom may readily replace the manganese atom present in the olivine crystal structure of the tephroite because of their higher reactivity than manganese atom.
Most of the olivine group minerals are used in the metallurgical processes in the blast furnace. The high-magnesium olivine that is forsterite is added to the blast furnaces to remove impurities from steel and to form aconditioner. Olivine group minerals also have been used as a refractory material. These minerals are used to make refractory brick and are also used as a casting sand.
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