A-Delta fibres transmit pain that is sharp, nonchronic, and well-localized.
Thus, the correct option is A.
What are A-delta fibres?А-deltа fibres are 2-5 mm in diаmeter, myelinаted, hаve а fаst conduction velocity (5-40 meters/sec), аnd cаrry informаtion mаinly from the nociceptive-mechаnicаl or mechаnothermаl-specific nociceptors. Their receptive fields аre smаll. Therefore, they provide precise locаlizаtion of pаin.
А-deltа fibres, therefore, send the “first pаin” into the brаin, while the C fibres send the slower pаin. The first pаin is often described аs а more shаllow, shаrper pаin.
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the process by which a change in gene expression causes immature cells to express different cell surface markers and respond to new signals is called
The process by which a change in gene expression causes immature cells to express different cell surface markers and respond to new signals is called BLANK.
What are immature cell?
An immature cell (lymphocytes) are cells that do not have the ability to fight against infection in the body and can develop into all types of blood cells, including white blood cells, red blood cells, and platelets.
What are Genes?
Gene are tiny structures found in the chromosomes that contains specific protein functions.
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The population density of a certain 750 square mile area in 1980 was 1077 people per square mile. In 1990, the population density was 1137 people per square mile. In 2000, the population density was 1144 people per square mile. In 2010, the population density was 1193 people per square mile. What was the population of this area in 1980?
A. The population was 807240 people.
B. The population was 807590 people.
C. The population was 807750 people.
D. The population was 807710 people.
Answer:
c the population was 807,750
Explanation:
750×1077=807,750
a cross between two pea plants that produce yellow seeds results in 124 offspring: 93 produce yellow seeds and 31 produce green seeds. what are the likely genotypes of the plants that were crossed?
Both Yy are the likely genotypes of the plants that were crossed.
As given here,
Total offspring are= 124;
that produce yellow squash= 93;
that produce green squash= 31;
Let Y for yellow generating squash and y for green squash; Y is dominant over y.
Cross among yellow squash generating plants,
Genotype of parents = Yy and Yy offspring = YY, Yy, Yy and yy, as Y is dominant over y, so YY and Yy all produce yellow squash, and yy produce green squash.
Their phenotypic ratio is 3:1 , as in query 93: 31
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what is one way we can generalize about the archaic homo sapiens? group of answer choices they were found only in europe and asia. they dated to the late pliocene. they show a mixture of homo erectus and homo sapiens traits. they are usually found with oldowan stone tools.
Compared to Homo erectus, archaic Homo sapiens had smaller brow ridges, a less protruding face, and slightly smaller teeth, though incisors and canines were frequently about the same size.
The anatomical traits that set anatomically modern hominids apart from archaic hominids should be described. In addition to having a larger and lower skull, a larger brow ridge, a larger and more projecting face, a taller and wider nasal aperture, a more projecting occipital bone, larger teeth, and no chin, archaic homo sapiens also have larger teeth.
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What are enzymes attachment sites called?.
The enzyme energetic website online is the binding web page for catalytic and inhibition reactions of enzyme and substrate; the shape of the active website and its chemical function is precise for the binding of a selected substrate.
Enzymes with websites are known as allosteric enzymes. they are an allosteric website and lively web page. An Allosteric website is part of an enzyme to which a specific effector or modulator can be connected.
This stabilization hastens reaction fees and makes them manifest at physiologically widespread charges. Enzymes bind substrates at key places in their shape known as active websites. they're usually highly specific and simplest bind certain substrates for certain reactions.
No longer do all enzymes own websites for allosteric binding; people who do are known as allosteric enzymes. Allosteric enzymes usually contain more than one protein subunit. Ligands that bind to allosteric enzymes and affect binding at an exclusive web page at the enzyme are referred to as effectors.
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a large rainstorm causes flooding and wipes out 87% of a small population of beetles. the remaining population has much lower genetic variation than the original population, and is not in hardy-weinberg equilibrium. which evolutionary mechanism has most likely acted on this population?
Whether or not they have adaptive value, mutations increase the genetic diversity of a population.
How does genetics work?The examination of genes and heredity, or how particular characteristics or behaviors are carried through offspring to parents as a result of variations in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or maybe more molecules that support bodily function.
What factors are genetic?A single gene mutation (monogenic disorder), numerous gene mutations (multifactorial inheritance disorder), a mix of gene mutations and environmental variables, or destruction to chromosomal (changes in the number or structure of complete chromosomes) can all result in genetic illnesses.
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stimulants act by increasing the activity of the group of answer choices autonomic nervous system. central nervous system. peripheral nervous system. parasympathetic nervous system.
Stimulants act by increasing the activity of central nervous system.
Stimulants are broad class of drugs that increase the activity of the central nervous system. They have wide array of application for example in performance enhancement, medical benefits, and recreational uses.
Stimulants are drugs that increases the levels of chemicals in the brain and helps in alertness, attention, and physical activity. Central nervous system stimulants also raise blood pressure and increase heart rate and breathing rate. They due so by increasing certain chemicals or neurotransmitter such as dopamine and norepinephrine.
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a gorilla protecting his family from hunters is an example of what from natural selection?
Answer:
Behavioral Adaptation
Explanation:
Behavioral adaptation: something an animal does usually in response to some type of external stimulus in order to survive. Hibernating during winter is an example of a behavioral adaptation.
What is another name for programmed cell death, which occurs during normal development of a multicellular organism?.
Consequently, this process is known as programmed cell death, while apoptosis—a word from Greek that means "falling off," as in leaves—is the name given to it more frequently.
What exactly does "programmed cell death" mean?PROH-grammed with the word "death" a form of cell death where a cell is killed through a succession of molecular events. One technique the body employs to get rid of unwanted or abnormal cells is this one. In cancer cells, the process of programmed cell death may be obstructed. also known as apoptosis.
Quiz about 'programmed cell death':A series of particular cellular events that are part of programmed cell death cause the cell to die and be destroyed. unless given survival signals, the default setting for cells. Enzymes called caspases, which become active during apoptosis.
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In the somatic cell of a mammalian female, one of the two x chromosomes is randomly inactivated and condensed, resulting in the formation of a.
How many exercises encompass stretching in the human body? a. eight b. too many to count c. that depends one each individual d. none
Answer:
b
Explanation:
that is the answer to the question
The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the.
The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the thalamus.
What is thalamus?
Your brain's thalamus is an egg-shaped structure located in the center. It serves as a relay station for all incoming hearing, taste, sight, and touch (but not smell) sensory information from your body to your brain. All information must first pass through your thalamus, which functions as a relay or railway station, before being routed or directed to the cerebral cortex, the outermost layer of your brain, for additional processing and interpretation.
Thalamus serves a variety of purposes, such as:
transmitting sensory data. bringing information into your brain in the form of nerve signals from all of your senses—taste, touch, hearing, and sight—except smell.A thalamic nucleus is responsible for processing and transmitting information from each sensory function to the corresponding region of your cerebral cortex.relaying information about movement (motor). Your thalamus is the hub of all motor pathways, just like it is for sensory information.Organizing our focus. Out of all the information your thalamus gets, it helps determine what to concentrate on.function in consciousness Your thalamus contributes to your ability to stay awake and aware.play a part in memory and thinking (cognition). Your limbic system, which is involved in processing and regulating emotions, is related to your thalamus.Hence, The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the thalamus.
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how energy from the sun drives global winds and currents.
Answer:
The sun heats the air, and the warm air rises. This rising warm air makes the cooler air from the surrounding areas come in to replace it. This then creates the wind.
Explanation:
i hope this helps
what is the normal resting ph for arterial blood? for muscle? how are these values changed as a result of exhaustive sprint exercise?
Lactic acid production is basically responsible for the change in pH.
What is pH?
The pH scale, which previously stood for "potential of hydrogen," is used to describe how acidic or basic an aqueous solution is. The pH values of acidic solutions are lower than those of basic or alkaline solutions.
The arterial blood pH is 7.4 at rest. It is 7.1 for muscle. During a strenuous sprint workout, muscle glycolysis produces a lot of lactate and H+, which lowers the pH of the muscle to less than 6.7 and the blood pH to around 7.1.
Hence, lactic acid production is basically responsible for the change in pH blood pH drops to 7.1 and muscles drop to 6.7.
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what are the independent,dependent, and controlled variables
what fits into the active site of an enzyme based on its shape
Which of the following is an example of an ecosystem?
1. A herd of bison.
2. All the deer, rabbits, and flowers in McLean County.
3. A pride of lions, a herd of water buffalo, the grasses on the Savanna, and the drought
affecting them all.
A pride of lions, a herd of water buffalo, the grasses on the Savanna, and the drought affecting them all is an example of an ecosystem.
What is ecosystem?Ecosystem, the collection of living things, their physical surroundings, and all of their interactions within a certain spatial context.An ecosystem can be divided into its biotic constituents, which include all of its living members, and its abiotic constituents, which include minerals, the environment, soil, water, sunshine, and all other nonliving elements. The movement of energy through the ecosystem and the cycling of nutrients within the ecosystem are the two main forces that bind these components together. Ecosystems come in a variety of sizes; some can fit inside a single water droplet, while others can cover entire landscapes and countries.Radiant energy from the Sun is the primary source of energy in practically all ecosystems.
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explain which organisms would be negatively affected and why if the Acacia primary producer went extinct.
The organisms that would be negatively affected if the Acacia primary producer went extinct are all organisms of the trophic chain (not only herbivores) because the elimination of producers in the ecosystem will irreversibly alter the community.
What is the specific role of producer organisms in the ecosystem?Producer organisms play a fundamental role in the ecosystem because they sustain all the trophic levels of the chain by providing biomass that is first used by herbivores to sustain this trophic level and then carnivores in the next trophic level.
Therefore, with this data, we can see that the specific role of producer organisms in the ecosystem is pivotal in the sense they are providing all biomass that is converted into energy by the next levels in the chain and therefore extinction of these organisms will lead to the collapse of the ecosystem.
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Along with the nervous system, the ___ system coordinates the various activities of body parts.
Along with the nervous system, the endocrine system coordinates the various activities of body parts.
Hormones produced by the endocrine system control and regulate a wide range of bodily functions. The endocrine and nervous systems work together to control the function of the other organ systems. Hormones are molecular signals that are produced by endocrine system cells.
Hormones are produced by glands and organs and then released into the bloodstream where they can reach all of the body's tissues and organs. The hormones the endocrine system secretes control a number of important bodily functions, including growth and development, metabolism, and reproduction.
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There would be no conflict in "The Interlopers" if the men had not done which of the following?
A. If the men had not seen the wolves, there wouldn't have been a conflict.
B. If the men had not gone into the woods, there wouldn't have been a conflict.
C. If the men had not embraced the feud they inherited, there wouldn't have been a conflict.
i accidentally put this in biology
There would be no conflict in "The Interlopers" if the men had not C. If the men had not embraced the feud they inherited, there wouldn't have been a conflict.
What is The Interlopers about?The Interlopers" is a short story about two men who meet in a plot of forest land over which they are feuding, only to become trapped under a fallen tree. They eventually reconcile, but are killed by wolves.
"The Interlopers'" moral is that hatred is destructive. Both men are in the forest in the story due to their mutual hatred. Because of their presence, they are trapped under a tree and eventually killed by wolves.
In conclusion, based on the information, the correct option is C.
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a primary function of the nasal cavity is to the air (which means to warm, cleanse, and humidify the air) as it enters the respiratory tract
Major role of the nasal cavity is to humidify and warm the inspired air.
Nasal passages filter and warm the air, and make it moist before it goes into the lungs. They are also responsible for sensing the smell . Hairlike structures known as cilia line up the mucous membrane and traps the mucus out of the nose.
Nasal cavity is located above the oral cavity, inside to the nasopharynx . It has three regions mainly nasal vestibule , respiratory passage and the olfactory region.
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What is the difference between chronological age and physiological age?.
The amount of years since someone was born is referred to as their chronological age. Mental functionality and personality changes as we age are considered to be a part of psychological aging.
The time from your birth up until the specified date is considered to be your chronological age. It represents your age in years, months, days, etc. People typically define their age in this way. Additionally, it is a major contributor to mortality, chronic diseases, and other physical function deficits, including hearing and memory loss.
A person's capacity on several levels of mental or cognitive functioning, such as self-esteem and self-efficacy, as well as learning, memory, and perception, is referred to as their psychological age. Exercise science research is currently heavily focused on the idea of psychological age and how it relates to the quality of life.
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To be activated, skeletal muscle fibers must receive neurotransmitter from neurons. What structure must neurons penetrate to activate the myofiber?.
Endomysium should neurons penetrate to activate the myofiber
What is Endomysium ?The endomysium, a delicate network of connective tissue that surrounds individual muscle fibres and houses the blood vessels and nerves that supply them as well as the proteoglycan matrix for ion flux and metabolic exchange, is made up of connective tissue.
A thin layer of areolar connective tissue called the endomysium, which means "inside the muscle," surrounds each individual muscle fibre or muscle cell. It also has nerves and capillaries. The sarcolemma is what lays on top of the cell membrane of the muscle fibre.It is a layer of dense, wavy connective tissue that surrounds the entire muscle and serves to prevent friction between the muscle and bones.Learn more about Endomysium here:
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All of the following are factors that affect population growth rate except
Answer:
What is "all of the following"
During translation, what is read to determine the type of amino acid that is added to the growing protein?.
The proofreading or read of type of amino acid is based on codon on mRNA and anti-codon on tRNA.
The final step of the translation process is frequently translation proofreading. After a piece has been translated, proofreaders carefully go through and modify it to find any flaws.
Despite the fact that most translations are now automated, proofreading still calls for human involvement. This is because, despite their ability to speed up turnaround times, machine translations are not error-free.
Therefore, before delivering a translated document to a client, translation agencies use separate teams of proofreaders to conduct multiple reviews of the translation.
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a chromosomal segment that breaks off and attaches to another chromosome is what type of mutation? group of answer choices inversion deletion reciprocal translo
Answer:translocation
Explanation:
HELP ASAP DUE TONIGHT
Answer:
simple: prokaryote
no nucleus: Prokaryote
complex: Eukaryote
plasma membrane: ?
cytoplasm: both
unicellular: prokaryote
the kind of cell that make up multicellular organisms: I want to say eukaryote?
has membrane bound organelles: eukaryote
contains DNA: both
no organelles: ?
ribosomes: both
Explanation:
sorry for the ? ones I want to say plasma membrane is Prokaryote but I'm not 100% sure I can get you atleast a 70%
Question: Density is a measure of how much heat there is in a volume of a substance. True or false?
Which stage of atmospheric evolution is characterized by conditions rich in water vapor and carbon dioxide?
O atmosphere I
O modern atmosphere
O atmosphere II
O atmosphere III
Atmosphere II stage of atmospheric evolution is characterized by conditions rich in water vapor and carbon dioxide
What is atmospheric evolution ?There are numerous feedback processes involved in atmospheric evolution, making it an inherently interdisciplinary problem that necessitates a "Earth system" approach. Because of this, progress cannot be made by focusing only on one area of science or one region of the Earth.
The absence of primordial atmosphere indicates the initial stage. The second stage saw the atmosphere evolve in response to the earth's hot interior. Last but not least, photosynthesis is a mechanism through which the living world alters the makeup of the atmosphere.Learn more about Atmospheric evolution here:
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after an extensive forest fire, an affected region of the forest shows signs of ecological succession. place the steps of succession in the correct order.
The steps of succession in a forest that has passed through an extensive forest fire would be secondary succession --> climax community.
What is succession?Ecological succession refers to the gradual replacement that happens to the community of plants and animals in an ecosystem until a relatively unchanging community is achieved.
The gradual replacement of plant and animal communities happens in a series of steps. These are:
Primary succession: when a newly exposed area that has never held any form of life gets colonized. The early colonists are referred to as pioneer species.Secondary succession: when an already existing community of living organisms undergoes a period of disturbance, the kind of succession that resumes is secondary succession.Without disturbance, pioneer species in primary succession gradually get replaced and the succession continues until a stable community, otherwise known as climax community is reached.
Secondary succession also proceeds in the absence of further disturbances until the climax community is achieved.
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