Asynchronous development of hematopoietic cells within the bone marrow is the result of decreased cellularity of hematopoietic precursors in the bone marrow.
Hematopoietic stem cells are found in the peripheral blood and the bone marrow. Also called blood stem cell.
These cells begins as an unspecialized stem cell. This stem cell multiplies, and some of these new cells transform into precursor cells(Asynchronous).
After birth, and during early childhood, hematopoiesis occurs in the red marrow of the bone, with age, hematopoiesis becomes restricted to the skull, sternum, ribs, vertebrae, and pelvis.
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Positive selection tests to see if the ______ of a T-lymphocyte can recognize and bind to an MHC molecule.
Positive selection tests to see if the TCR of a T-lymphocyte can recognize and bind to an MHC molecule.
What is a T-lymphocyte?A T-lymphocyte is a special type of immune cell that is generated inside the bone marrow.
The T-cell receptor (abbreviated as TCR) is a protein located on these immune T lymphocytes.
In conclusion, Positive selection identifies if the TCR of a T-lymphocyte can recognize and bind to an MHC molecule.
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In this lab, you will explore the microscopic process of bulding proteins from RNA. Instead of working with variables, you will focus on the steps of that process.
The investigative question that will you answer by exploring the process of building proteins from RNA is translation.
What is translation ?The translation is a cellular process by which a specific type of RNA (mRNA) is converted into a protein sequence.
During translation, the messenger RNA (mRNA) is composed of triplets of nucleotides called codons that specify different amino acids.In conclusion, the investigative question that will you answer by exploring the process of building proteins from RNA is translation.Learn more about Translation here:
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Why is anesthesia used while surgery? I what will happen if we don't give anesthesia before surgery ?
Answer:
Anesthesia is used because it puts people to sleep, so they don't feel pain.
If you don't use anesthesia the patient will feel the pain, but might also die.
Explanation:
hope it helps
sorry if I'm wrong
Answer:
It keeps you from feeling pain during the procedure, if anesthesia is not used on you while you're having surgery you will feel EVERYTHING, and you will not have the anesthesia's side effects! :)
Therefore, when the alleles of a particular gene are passed on to their descendants via gametes, a haploid sperm fertilizes a haploid egg producing a ____________ .
Therefore, when the alleles of a particular gene are passed on to their descendants via gametes, a haploid sperm fertilizes a haploid egg producing a diploid zygote.
The process in which haploid gametes fuse to form diploid offspring:A diploid cell produces haploid cells during meiosis, and two haploid cells (gametes) combine during fertilization to create a diploid zygote.
Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes, which results in the production of gametes, such as sperm or egg cells. Meiosis comprises two rounds of division, producing four cells with only one copy of each chromosome as a final product (haploid). Additionally, each chromosome undergoes genetic material cross-pollination between the paternal and maternal copies before division, resulting in novel combinations of the genetic code on each chromosome. The haploid cells created by meiosis between a man and a female will later unite during fertilization to create a cell with two copies of each chromosome once more, the zygote.
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Researchers conclude that the functional car8 enzyme decreases pain signaling by inhibiting calcium release through itpr1. which additional finding would most weaken this conclusion?
The additional finding that weaken this is the presence of another factor capable of both altering car8 activity and leading to the inhibition of calcium release.
What are pleiotropic effects?The expression 'pleiotropic effects' makes reference to a given chemical substance or compound (in this case, for example, another enzyme) which is able to alter the functioning of different cellular traits.
These effects (pleiotropic effects) are well known in research to mask the real causes of biological phenomena.
In conclusion, the additional finding that would most weaken this conclusion is the presence of another factor capable of both altering car8 activity and leading to the inhibition of calcium release through itpr1.
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How much total atp can be created by the complete anaerobic & aerobic metabolism of 1 molecule of glucose?
38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).
Cellular respiration is a set of metabolic reactions and approaches that take vicinity in the cells of organisms to convert chemical strength from nutrients into adenosine triphosphate (ATP), and then release waste products. The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing strength.
Respiration is one of the key approaches a cellular releases chemical energy to fuel cellular activity. The general reaction occurs in a series of biochemical steps, some of which might be redox reactions. Although cellular respiration is technically a combustion response, it's far an unusual one because of the slow, managed release of strength from the series of reactions.
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A white blood cell (WBC) count is performed on a blood specimen from a newborn using a hematology analyzer that does not have the capability to detect and quantify nucleated red blood cells (NRBCs). The WBC count that is reported by the analyzer is 28.2 x 109/L, a
The action that should be taken is that:
The person needs to count the number of cells that looks like the cells in the image attached (that is per 100 WBCs) and then they need to put together the corrected WBC count through the use of this formula.
The Total WBCs x 100 / 100+ the number of NRBCs.What does white blood cell count tell a person?A white blood count is known to be a factor that is often used to measures the rate or the number of white cells that is present in your blood.
Note that the White blood cells are a key aspect of the immune system and as such, the action that should be taken is that:
The person needs to count the number of cells that looks like the cells in the image attached (that is per 100 WBCs) and then they need to put together the corrected WBC count through the use of this formula.
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A white blood cell (WBC) count is performed on a blood specimen from a newborn using a hematology analyzer that does not have the capability to detect and quantify nucleated red blood cells (NRBCs). The WBC count that is reported by the analyzer is 28.2 x 109/L and it is flagged for a manual differential. Upon review of the blood film, more than 6 nucleated cells that resemble the cells shown in the image were identified in the 100 WBC differential. What action should be taken?
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Where does the f1 subunit of atp synthase get its energy to catalyze the synthesis of atp?.
The rotation of the Fo subunit leads to rotation of the F1 subunit, which can then catalyze ATP synthesis
which can then catalyse the synthesis of ATP. Kinetic energy from the flow of protons is converted to the kinetic energy of rotation of the Fo subunit.
What is ATP synthase ?The hydrophilic F1 region of the ATP synthase is in charge of ATP hydrolysis. Invading the mitochondrial matrix space is the F1 unit.
A hexamer with six binding sites is formed by the subunits and. Three of these bind ADP while being catalytically inactive.Synthases of ATP. An enzyme that uses energy from a proton gradient or another source to catalyse the phosphorylation of ADP with inorganic phosphate to produce ATPLearn more about ATP synthase here:
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Which most closely describes plant tissue culture?
Group of answer choices
The process of widening stems and roots.
Growing plants in an artificial, sterile environment.
The process through which a plant grows from an embryo inside the seed.
A process that transports minerals into the roots of a plant.
Flag question: Question 17
The statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment.
What are plant tissue culture?Plant tissue culture simply refers to the collection and techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium.
So therefore, the statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment.
One significance of plant tissue culture is that it may be used for genetic modification of a plant. Itcan also be used to increase its yield.Plant tissue culture finds application widely in the plant sciences and forestrySo therefore, the statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment
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Which of the following diseases can be passed to another person through an animal bite?
1. Lyme disease
II. Malaria
III. Cholera
Ol only
Oll only
OI and II
O II and III
The disease that can be passed to another person through an animal bite are;
MalariaMalariaCholeraTherefore, the answer is option D.
What are vectors?Vectors are carriers of disease-causing agent or pathogens.
Vectors transfer pathogens that are capable of causing diseases from an infected host to an healthy host.
Malaria is a disease spread by mosquito, in which a protozoan, plasmodium, multiplies in blood every few days.
Cholera is caused by certain strains of the Vibrio cholerae bacterium through ingestion of contaminated water or food, usually marked by severe gastrointestinal symptoms.
The following are diseases that can be transferred via vectors:
Malaria; which is caused by a plasmodium pathogen and carried by a mosquitoCholera; which is caused by a bacterium carried by a houseflyLearn more about vectors at: https://brainly.com/question/14987471
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Answer:
C- | and ||
Lyme and malaria
Explanation:
I took the test and got it right :)
Epigenome-wide association study of DNA methylation in narcolepsy: an integrated genetic and epigenetic approach
Epigenetics is the branch of genetics that deals with the altered genetic expression of the genes without any change in the DNA sequence.
Our body’s normal sleep-wake cycle is regulated by our brain but due to a chronic nervous disorder in the brain, this regulation is disrupted causing the disease Narcolepsy. Research is underway to evaluate the exact reason behind the onset of this disease but as per the researchers, this disease is governed by two branches viz, genetics and epigenetics.
DNA methylation and DNA acetylation are two important concepts under epigenetics which can lead to either switching off or on certain particular genes.
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how does the cardiovascular system help the body maintain hormoestasis
Answer:
The cardiovascular system helps maintain homeostasis by continually supplying the central nervous system--the brain and spinal cord--with oxygen and glucose. Brain cells start dying after just one minute without oxygen. The brain is the control center for all of the body's homeostatic processes.
While watching the Yankees game in the lab, you accidentally mutate the nuclear localization signal sequence of the large protein Moose 2, rendering the sequence not functional. Which of the following observations do you expect
The correct answer is Moose 2 is localized in the cytosol.
CytosolOne of the liquids present inside cells is the cytosol, which is also referred to as groundplasm or the cytoplasmic matrix. Membranes split it into compartments for storage. The mitochondrial matrix, for instance, divides the mitochondrion into several compartments.
The cell membrane of a eukaryotic cell encloses the cytosol, which is a component of the cytoplasm, which also contains the mitochondria, plastids, and other organelles. The cell nucleus is located outside of the cytoplasm. Therefore, the cytosol is a liquid matrix that surrounds the organelles. The majority of metabolic chemical reactions in prokaryotes occur in the cytosol, but a small number also occur in membranes or the periplasm. In eukaryotes, some metabolic pathways still take place in the cytosol, while others happen inside the organelles.
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write the role of HCL in digestion
Answer:
Hydrochloric acid contributes to protein digestion by supplying H+ which activates pepsinogen, the precursor to pepsin. Pepsinogen is secreted by chief cells in the gastric glands of the body and antrum of the stomach.
Explanation:
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Answer:
Activates pepsin enzyme
Explanation:
Carbohydrates are digested into maltose in the mouth and protein digestion begins in the stomach. In the stomach, food undergoes chemical as well as physical digestion.Due to the peristaltic action of the muscles the bolus breaks up in the stomach wall and mixes well into a chyme. ( Physical digestion )Several secretions flow into the stomach. It is collectively known as gastric juice.Also the juice contains pepsin and HCL acid.Here, the enzyme pepsin acts on the proteins in the food and forms polypeptides, which are intermediate products of life. ( Chemical digestion )And the function of the HCL acid is to stimulate pepsin enzyme and make it activeStress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the:____.
Stress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the immune system.
What is the immune system?The immune system is a body system used by the body to fight against infections and diseases caused by bacteria and viral entities (they are not organisms).
The immune system is composed of physical barriers such as the skin mucous membranes, and endothelia that fight against pathogenic infections.
In conclusion, stress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the immune system.
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Within the mesohyl of a sponge are small rigid structures that act like an endoskeleton, providing structural support for the sponge. What are these called
Spicules are small rigid structures that act like an endoskeleton, providing structural support for the sponge within the mesohyl of a sponge
The "bricks" or structural elements of a sponge are known as spicules, and each species has its own distinct range of spicule sizes, forms, and compositions. When combined, these characteristics can be examined under a microscope to ensure correct identification. Either calcium or silica makes up spicules.
The only skeleton in soft sponges that encrust such hard surfaces as rocks is an internal gelatinous matrix called the mesohyl, which serves as an endoskeleton in the majority of sponges. The mesohyl is typically strengthened by spongin fibers, mineral spicules, or both. Spicules serve as the skeleton and support system for sponges. Additionally, they offer defense against predators.
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Mutation spectrum analysis of Duchenne/Becker muscular dystrophy in 68 families in Kuwait: The era of personalized medicine
Duchenne and Becker muscular dystrophies (DMD/BMD) are X-linked recessive neuromuscular disorders characterized by progressive irreversible muscle weakness and atrophy that affect both skeletal and cardiac muscles
What is Duchenne/Becker muscular dystrophy ?Both Duchenne and Becker muscular dystrophy are caused by mutations in a protein called dystrophin
In Duchenne muscular dystrophy, functioning dystrophin is completely absent in muscle, while in Becker muscular dystrophy, there is some dystrophin present, although not enough for completely normal muscle function.it usually affects boys in early childhood; people with the condition will usually only live into their 20s or 30s.Learn more about Duchenne/Becker muscular dystrophy here:
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Hemophilia is a sex–linked disorder that is caused by a defective gene on the X chromosome. What will be the pattern of inheritance of the offspring of a hemophiliac father?
the chambers in the upper part of the heart , which receive blood from the rest of the body , is called _____
The chambers in the upper part of the heart , which receive blood from the rest of the body , is called Atria.
The atria are the two upper chambers. Blood is given out and collected. The ventricles are the two bottom chambers.Blood circulates through the four chambers of the heart. Right atrial blood flows into and via the right ventricle. The blood is pumped from the right ventricle to the lungs, where it is oxygenated. The pulmonary veins that enter the left atrium return the oxygenated blood to the heart. Blood enters the left ventricle from the left atrium. The aorta will deliver the oxygenated blood to every part of the body when the left ventricle pumps blood there.learn more about Atria here: https://brainly.com/question/26387166
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which feature is charatisic of estauries
The estauries are characterized by mix of fresh water and salt water. That is option A
What is estauries?Estauries is defined as the part of water where many rivers meet and sweep into the ocean.
The characteristics of estauries include the following;
The salty water mixed with freshwater resulting to brackish water formation.The gradient of salinity in a semi-enclosed coastal system.Learn more about brackish water here:
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Which feature is characteristics of estauries:
A mix of fresh water and salt water.
swap-like land.
region of land that drains into a body of water.
the gradient of salinity in a semi-enclosed coastal system.
Which of these scenarios describe(s) LTD?
Answer choices:
Neuron A fires infrequently upon neuron B, which is silent, which leads to a decrease in their connection strength
Neuron A fires strongly and neuron B fires weakly, which leads to an increase in their connection strength
Neuron A and B both fire, but asynchronously, from an incoming stimulus and decrease their connection strength
Neuron A fires strongly and repeatedly, but not neuron B, which leads to an increase in their connection strength
The correct answer choice which is true about neurons is Neuron A fires strongly and neuron B fires weakly, which leads to an increase in their connection strength
What is a Neuron?Neurons can simply be defined
as the fundamental and functional units of the nervous system. Neurons are also known as nerves.
There are basically three classes of neurons: These are
Efferent neuronesAfferent neuronesIntermediate neuronsSo therefore, neuron A fires strongly and neuron B fires weakly, which leads to an increase in their connection strength
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acd is the answer to this multiple choice question
Answer:
where is the question?
Explanation:
Venous drainage of the head and neck is through the veins, which then drain into the brachiocephalic veins.
According to the research, the statement is true. Venous drainage of the head and neck is through the internal jugular vein, which then drain into the brachiocephalic veins.
What is the internal jugular vein?It is a very wide and thick duct that it is responsible for collecting the non-oxygenated blood that comes from the head, from the anterior area of the neck.
Being the largest caliber and the other jugular veins flow into it; it is a continuation of the sigmoid sinus and together with the subclavian vein made up of the brachiocephalic veins that drain blood from the head, neck, and upper extremities.
Therefore, we can conclude that according to the research, the statement is true. Venous drainage of the head and neck is through the internal jugular vein, which then drain into the brachiocephalic veins.
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A football player can hear his coach’s voice above the noise of the crowd and can sense an opponent about to run him down. These abilities are due to the action of what part of the brain?
Answer:
Thalamus
Explanation:
Simulation tools, environments and frameworks for UAVs and multi-UAV-based systems performance analysis (version 2.0)
For a safer approach, the proposed model is simulated using available software instead of hardware implementations.
Frameworks for UAVs and multi-UAV-based systems -
Unmanned aerial vehicles (UAVs) received a lot of attention during the past 10 years and are now employed in a variety of settings and systems. It is vital to evaluate the UAVs' capabilities, the effects of applications, routing protocols, mobility, and other network aspects. Real experiments, especially those involving multiple UAV-based systems, can be very expensive and difficult to carry out.The tools for mono-UAV-based systems as well as the tools for multi-UAV-based systems are identified. The objectives, specifications, advantages, and disadvantages of each instrument under study are covered in full in this essay. In addition, a variety of UAV simulators is offered. It provides recommendations that will be helpful to researchers and assist them in locating and choosing the right instruments.Learn more about UAVs and multi-UAV-based systems
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Phagocytic cells are an important part of the innate immune system because of their ability to:____.
a. attack cells infected by a virus.
b. engulf many different pathogens.
c. present foreign antigens that stimulate adaptive immune responses.
d. produce multiple antibodies.
Phagocytic cells are an important part of the innate immune system because of their ability to engulf many different pathogens. So the correct answer is b. engulf many different pathogens.
The detection of a microbial invasion is typically swiftly followed by its engulfment by a phagocytic cell in all animals, including invertebrates and vertebrates. In the tissues across the body of vertebrates, macrophages are particularly prevalent in the lungs and stomach, two places where infections are most prone. Additionally, the liver, spleen, and connective tissues contain significant amounts. These long-lasting cells are among the first to come into contact with invasive pathogens and patrol the body's tissues.
Neutrophils, the second-largest family of phagocytic cells in vertebrates, are short-lived cells prevalent in blood but absent from healthy, normal tissues.
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The probability that the daughter of a woman with a dominant disease-causing allele on one X chromosome and a normal male will be affected with the disorder is ________ .
The probability that the daughter of a woman with a dominant disease-causing allele on one X chromosome and a normal male will be affected with the disorder is 50%.
Men and women have different chances of passing on X-linked dominant conditions since men only have one X and one Y chromosomes, whereas women have two X chromosomes. All of a man's sons inherit his Y chromosome, and all of his daughters inherit his X chromosome. As a result, only his daughters will be afflicted if a man has an X-linked dominant ailment; his sons will not be affected. Each child of a woman inherits either one or the other of her X chromosomes. With each pregnancy, a woman who carries an X-linked dominant disorder on one of the X chromosomes has a 50% chance of giving birth to a child who carries the disorder be it boy or girl.Hence, the probability that the daughter of a woman with a dominant disease-causing allele on one X chromosome and a normal male will be affected with the disorder will be 50%.learn more about X linked dominant condition here: https://brainly.com/question/20584746
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The probability that the daughter of a woman with a dominant disease-causing allele on one X chromosome and a normal male will be affected with the disorder is 50%.
What are chromosomes and what do they do?Chromosomes are the thin, threadlike components of both plant and animal cell nuclei. They consist of one molecule of deoxyribonucleic acid and one protein (DNA). The chromosomes are in charge of holding the instructions that give the kids their own identity while also displaying qualities from the parents when the genetic material is passed from parents to the child.
A chromosome's functionThe genetic information and a large number of the proteins necessary for its expression are both stored on the chromosome. The frequency and type of gene translation into proteins are controlled by their intricate form and structure. Generating organisms is accomplished by a process known as gene expression. How often a gene is expressed depends on how tightly packed the chromosome is at a certain place. Less actively transcribed genes will be clustered more closely together than actively transcribed genes, as can be seen in the chromosome structure image below. When these proteins are activated or deactivated, the chromosome can constrict or extend, which is how many cellular molecules that control genes and transcription function. Every protein is turned on during cell division.
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As mean arterial pressure increases, the ________, informing the medulla oblongata that blood pressure has indeed increased.
As mean arterial pressure increases, the frequency of action potentials from the baroreceptors increases, informing the medulla oblongata that blood pressure has indeed increased.
Special receptors called baroreceptors monitor variations in your blood pressure. The aorta and carotid sinus both contain significant baroreceptors. The walls of the arteries stretch when the blood pressure in the aorta or carotid sinus rises, stimulating an increase in baroreceptor activity.Action potentials are more quickly fired when baroreceptors are activated, with the speed being inversely correlated with the mechanical stretch.The brain interprets the information that the baroreceptors send as a rise in blood pressure. The blood vessels, heart, and kidneys are just a few of the bodily organs that get signals from the brain to lower blood pressure.learn more about baroreceptors here: https://brainly.com/question/8963123
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Amy's teacher is explaining math concepts to the class. amy cannot help paying attention to the teacher's colorful sweater. in this example, amy is focusing on ______ stimuli.
Amy's teacher is explaining math concepts to the class. amy cannot help paying attention to the teacher's colorful sweater. in this example, amy is focusing on salient stimuli.
By giving visual stimuli attentional priority, visual information is selected, and this process can be managed in a variety of ways. When attentional selection reflects the observer's expectations and objectives, it is said to be top-down, and when it reflects the saliency of the stimuli, it is said to be bottom-up.
In this scenario prior to listening to the conceptual talk, attention is initially drawn to the prominent colour distractor. However, the salient element unintentionally drew attention to itself rather than the audio element.
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During conception there are three stages. What takes place during the second stage which is fertilization?.
Answer:
well the sperm fertilises the egg or zygote