Nicotine in smoke has two forms; the electrically neutral form is more easily absorbed through the mucous membranes of the mouth, nose, and lungs.
Where is nicotine absorbed the most?Nicotine is absorbed through mouth mucous membranes and reaches peak blood and brain levels more slowly in people who do not inhale the smoke, such as cigar, pipe, and smokeless tobacco users. By "riding" in with the tar that is inhaled from a lit cigarette, nicotine enters the body. About 8 seconds after inhaling the smoke, the nicotine/tar mixture enters the lungs, where it is swiftly absorbed. It can move to the brain once it reaches the bloodstream.Learn more about the Nicotine with the help of the given link:
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A bus starts from rest position gain the final velocity 240 m/s² and what will be its acceleration.
The part of the zygote that ultimately grows into the embryo, rather than the support structures.
Embryoblast (Inner cell mass) is the part of the zygote that grows into the embryo.
The blastocyst, a formation that develops weeks after conception, contains the inner cell mass. In summary, a sperm cell first enters an egg cell. The first fertilized egg has now merged with the first sperm cell to form a zygote (a single diploid cell). The zygote then cleaves, resulting in the 16-celled morula structure. The morula keeps cleaving, finally forming a blastocyst with an external trophoblast layer and an internal cell mass. The embryo develops from the inner cell mass. Finally, the embryo is referred to as a fetus around 8 weeks after the initial egg cell was fertilized since it continues to generate new cells.
The bilaminar embryonic disc (germ disc) is a two-layered structure that develops from the embryoblast's inner cell mass. The development of a fetus is a cell division-driven process with several stages defined by unique structures formed as the beginning zygote progresses through several cleavage cycles.
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the eyeless gene is required for eye formation in drosophila. it encodes a homeodomain. a. what would you predict about the biochemical function of the eyeless protein? b. where would you predict that the eyeless gene is expressed in development? c. the small eye and aniridia genes of mice and humans, respectively, encode proteins with very strong sequence similarity to the fly eyeless protein, and they are named for their effects on eye development. devise one test to examine whether the mouse and human genes are functionally equivalent to the fly eyeless gene.
According to the given statement:
a:- Potential use for its protein is as a DNA-binding transcription factor that binds to specific DNA sequences.
b:- It is possible to do gene deletion experiments to see if Drosophila will retain its eyes or go blind.
c:-Transgenic tests can be used to determine whether the Small eye and Aniridia genes function similarly to the fly eyeless gene.
Briefing:In Drosophila, the eyeless gene is necessary for the development of eyes. Given that it encodes for a homeodomain, its protein may have a role as a transcription factor that binds DNA in a specific sequence. In situ hybridization can be used to study the gene's mRNA expression pattern, and immunological methods can be used to study the protein.
A. Since the eyeless gene in Drosophila encodes for a homeodomain, one potential use for its protein is as a DNA-binding transcription factor that binds to specific DNA sequences.
B. As implied by its function, the eyeless gene should be expressed in the Drosophila cells in charge of eye formation. In situ hybridization of the gene's mRNA expression is one potential test to find the gene. The protein can also be seen via a variety of immunological and staining methods. It is possible to do gene deletion experiments to see if Drosophila will retain its eyes or go blind. Additionally, genetic engineering can determine whether the eyeless gene expressed in other organs can result in the creation of eyes.
C. Transgenic tests can be used to determine whether the Small eye and Aniridia genes function similarly to the fly eyeless gene. Since both of these function as master switches for the genes that create eyes, it is possible to transfer the mouse Small eye gene into Drosophila to observe whether it is expressed. These, however, are simply Drosophila eyes and not comparable to mouse eyes.
Describe DNA:All known organisms, including many viruses, require deoxyribonucleic acid, a polymer comprised of two polynucleotide chains that coil around one another to create a double helix, to develop, function, grow, and reproduce. DNA and ribonucleic acid are examples of nucleic acids.
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What did William Penn hope that the Pennsylvania colony would offer to the
colonists?
A. A place to find gold
B. Better land for farming
C. Strict religious rules
D. Religious freedom and equality
The hope that William Penn had for the Pennsylvania colony was that there would be . Religious freedom and equality.
What was the hope of William Penn?The man called William Penn when the colony was created had several hopes for it. He had hoped that the colony would help people to have the religious freedom that they needed and that all of the people would be free and have equal opportunities with themselves while the colonists would have good dealings with the Indians that lived there as well.
The colony was known for several facts these were from the fact that it had low debts, it had the freedoms of religion and the people had peaceful coexistence with themselves and the Indian Americans.
Hence we would say that The hope that William Penn had for the Pennsylvania colony was that there would be . Religious freedom and equality.
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Answer:
The answer is
Explanation:
Got it right on
a rapidly labeled rna fraction of the nucleolus has been isolated and partially characterized. this rna component appears to be a precursor of transfer rna
A rapidly labeled RNA fraction of the nucleolus has been isolated and partially characterized. This RNA component appears to be a precursor of transfer RNA.
It contains neither pseudouridine nor methylated bases, and is unable to form amino acyl RNA.
Therefore , it resembles transfer RNA in base composition and molecular weight also serves as a substrate for in vitro methylation to a greater extent than transfer RNA.
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In the tca cycle, gtp or atp is produced during the conversion of ______________.
Answer: succinyl group to succinate
9. Write the chemical equation for the process of photosynthesis.
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
bam
populations change over time by the process of select answer , which proceeds by the major mechanism of select answer
populations change over time by the process of Evolution , which proceeds by the major mechanism of natural selection
Evolution is phenomena of population in which the heritable characteristics of the organisms are changed over time through successive generation.
Evolution occurs because the environment is continuously changing and the organisms have to adapt themselves in the condition for survival.
One of the major process by which evolution occurs is natural selection. It is process in which the individual who are more adapted to the environment will be only selected by the nature and will be able to produce offsprings.
Other than natural selection, evolution can occur by genetic drift, mutation, etc.
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starting with one molecule of glucose, compare the amount of atp made in aerobic vs anaerobic respiration.
Which organism is able to cause an infection?
A
skin cell
B
white blood cell
C
bacteria
D
red blood cell
Answer:
Bacteria
Explanation:
Bacteria is the only one that causes an infection. The others do not.
Answer:
bacteria
Explanation:
Red blood cells transport oxygen to respiring cells
white blood cells protect the body against diseases
skin cell are basically just normal cells but bacteria causes infection and sickness
dysregulated crtc1 activity is a novel component of pge2 signaling that contributes to colon cancer growth
The correct answer is CRTC1 its significance of its dysregulation in colon cancer because of its predominant expression in the brain .
CRTC1 transcriptional activity is mediated by EP1 and EP2 receptor signalling, as well as subsequent calcineurin and protein kinase A activation. In colon cancer cell lines, in vitro CRTC1 loss of function was associated with decreased viability and cell division rate, as well as increased chemotherapy-induced apoptosis in response to PGE2. CRTC1 stable overexpression, on the other hand, significantly increased colonic xenograft tumour growth, demonstrating the role of CRTC1 signalling in colon cancer progression. The discovery of the transcriptional programme activated by increased CRTC1 expression during colonic carcinogenesis revealed several notable pro-tumorigenic CRTC1 target genes, including NR4A2, COX2, amphiregulin (AREG), and IL-6. Finally, we show that CRTC1-induced COX2, AREG, and IL-6 promoter activities are dependent on functional AP1 and CREB transcriptional partners.
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vacuolation in the human cerebral cortex and its relationship to the interval between death and autopsy and to synapse numbers: an electronmicroscopic study
The discussion of vacuolation in the human cerebral cortex and its relationship to the interval between death and autopsy and to synapse numbers: an electronmicroscopic study is written in the paragraph below-
Electron micrographs of material acquired up to 69 hours post-mortem from people with no known neurological abnormalities were used to evaluate vacuolation in the human cerebral cortex resulting from swelling of cell processes after death. Vacuolation was shown to considerably rise up to 30-35 hours after death before declining. The number of discernible synapses decreased significantly along with this alteration, which was likely caused by compression brought on by the vacuolation rather than post-mortem disintegration.
What is cerebral cortex?The outermost layer of the brain, known as the cerebral cortex, is responsible for our sharpest mental talents. Between 14 and 16 billion neurons can be found in the cerebral cortex, which is predominantly constituted of grey matter (neural tissue made of neurons).
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How much force is required to make a 12kg object accelerate 0.5m/s/s?
Answer:
[tex] \large{ \boxed{ \tt{Answer : \tt \: 6N}}}[/tex]
Please see the attached picture for full solution!:)
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Type the correct answer In each box.
Use numerals Instead of words.
A force of 25 newtons moves a box a distance of 4 meters In 5 seconds. 5
The work done on the box Is
Nm, and the power S
Nm/S.
Reset
Next
Refer to the answer below for the question:
Force = 25 N
Distance = 4 m
Time = 5 s
WorkThe formula for work done is,
Work (W) = F x s
where,
F = force applied
s = displacement of the object
Therefore, the work done by the box will be,
Work = 25 N x 4m = 100 Nm
PowerThe formula for power is,
Power = W / Δt
where,
W = work done
Δt = time taken to do the work
Therefore, the resultant power required to move the box will be,
Power = 100 Nm / 5 s = 20 Nm/s.
Hence the answers are, work = 100 Nm and power = 20 Nm/s.
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A _______ is a basic unit of hereditary information. It contains a specific segment of DNA that influences a particular trait or group of traits.
A.
nucleus
B.
gamete
C.
genome
D.
gene
[tex]{\huge{\red{\sf{D. \ GENE}}}}[/tex]
Answer:
D
Explanation:
my answer is thiswkwkwkwkwkwk
emily has epilepsy. based on the textbook's discussion of neurotransmitters, emily should avoid foods made with: please choose the correct answer from the following choices, and then select the submit answer button. answer choices dopamine. serotonin. monosodium glutamate. acetylcholine.
Emily should avoid foods made with monosodium glutamate.
We can define epilepsy as a kind of disorder in which the brain undergoes multiple seizures. The electrical functioning of the brain keeps on being affected which results in multiple seizures.
A person's consciousness, changes in movement and sensations can all be altered by epilepsy.
The common triggers that enhance for epilepsy are stress, lack of sleep, alcohol etc. In some people, monosodium glutamate that is often found in canned foods and artificial sweeteners can trigger epilepsy. Hence, as Emily is suffering from epilepsy, she should avoid foods made with monosodium glutamate.
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choose the correct anwser
its multiple
Answer:
the answer is (B) (D) (E) :)
Redwood trees are among the tallest trees in the world, reaching more than 110 meters in height. Which property of water causes it to be transported up to the top of a redwood tree?.
Although Redwood trees are very tall, reaching 110 meters in height, water can still get to the top of the Redwood tree because of the following properties of water: cohesion and adhesion.
The water molecule is polar. This is because a water molecule has a partial positive charge on one side and a partial negative charge on another side. Thus, the partial negative side of one water molecule gets attracted to the partial positive side of another water molecule. This attraction is called hydrogen bond.
The hydrogen bond in water is responsible for most of the properties of water, including cohesion and adhesion. The polar water molecule is not only attracted to other water molecules, but it's also attracted to the molecules of other substances that are polar. The process whereby water molecules stick to one another is called cohesion, and the process whereby water molecules stick to other substances is called adhesion.
Redwood trees transport water using vessels called xylem. The walls of the xylem vessels are polar; hence, adhesion occurs on the walls of the vessel, while cohesion occurs between the water molecules in the xylem. This enables water to climb up the xylem vessels in the Redwood tree from the root all the way to the leaves. This process is also called capillary action.
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Answer:
B (cohesive behavior)
Explanation:
the relationship between accelerometer-measured sleep and next day ecological momentary assessment symptom report during sport-related concussion recovery
The following day's symptoms, particularly those that came on late and among CMF and emotional symptoms, were adversely correlated with sleep. The subacute stage of concussion recovery showed the highest correlation between sleep and symptom burden, suggesting the potential value of sleep intervention following injury.
How can the association between accelerometer-measured sleep and an ecological momentary assessment symptom the following day be discovered?
Ecological momentary assessments (EMAs) could help health organizations routinely track patient health outcomes and care experiences as a result of the growing usage of mobile technologies. In order to measure nightly sleep and complete the post-concussion symptom scales (PCSS) three times through mobile EMA, 17 athletes (47.1%F) between the ages of 12 and 19 years wore Actigraph GT3x+ devices. As a result, there were between 91 and 177 observations for each outcome. In generalized linear mixed models, the relationships between nighttime sleep and symptoms the following day and during recovery were evaluated using independent variables of sleep efficiency (SE%: ratio of waking time to sleep time) and total sleep time (TST).
Thus, In Week 1 and Week 2, respectively, total symptoms and afternoon symptoms, and total morning, afternoon, and night symptoms were all negatively correlated with sleep (ps = 0.001–0.021).
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What does it mean
when a cell is in an
ISOTONIC solution
Answer:
There will be no net movement of water into or out of the cell, and the volume of the cell will be constant.
Explanation:
When a cell is immersed in an isotonic solution, there is no net movement of water into or out of the cell, and the volume of the cell remains constant. If the concentration of solutes outside the cell is the same as the concentration inside the cell and the solutes cannot enter the membrane, the solution is isotonic to the cell.
It means there will be no net flow of water going in or out of the cell.
biochemical safety of ablative yttrium-90 radioembolization for hepatocellular carcinoma as a function of percent liver treated
Biochemical safety of ablative yttrium-90 radioembolization for hepatocellular carcinoma as a function of percent liver treated "hepatocellular carcinoma".
Trans arterial radioembolization can serve as an ablative therapy for early-stage hepatocellular carcinoma (HCC). If the volumetric variability of liver segments, this studied then it aims to characterize the safety of ablative radioembolization by determining percent liver treated (%LT) thresholds associated with biochemical toxicity.
A radioactive element seems to be yttrium-90. In order to treat cancer, radiation treatment employs it.
Patients with ALBI 2 and CP-B liver function are less likely to have an increase in their respective grade/class when treating <14.5% of the liver using glass microspheres whereas ALBI 1 and CP-A patients showed no definitive %LT threshold for biochemical toxicity within the range of this study.
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henke vg, bateman bt, leffert lr. focused review: spinal anesthesia in severe pre-eclampsia. anesth analg. 2013 sep;117(3):686-93.
A form of neuraxial anesthesia known as spinal anesthesia involves injecting local anesthetic (LA) into the cerebrospinal fluid (CSF) of the lumbar spine in order to numb the nerves that leave the spinal cord.
What does the study indicate?As long as there is no indwelling epidural catheter or neuraxial anesthesia contraindication, spinal anesthesia is generally regarded as a reasonable anesthetic choice for cesarean delivery in severe preeclampsia. Those with severe preeclampsia experience spinal-induced hypotension less frequently and with less severity than healthy parturients. Although spinal anesthetic may result in more hypotension than epidural anesthesia in cases of severe preeclampsia, this hypotension is often manageable, transient, and unrelated to clinically meaningful differences in outcomes.Learn more about the Pre-eclampsia with the help of the given link:
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guys why is it important to know the three different type of rocks?? ( i need help please i have a 45 in this grade :(
Rocks are classified into the three different types for easy identification.
What are rocks?Rocks are rigid structures in geology which are made up of various minerals such mica, halite, and calcites.
There are various types of rocks which include the following:
Igneous rocks: These are the rocks that are formed when molten magma cools from a volcanic eruption. The commin types of igneous rocks include:felsic, intermediate, mafic, and ultramafic.Sedimentary rocks: These are the types of rocks formed from deposition of mineral or organic materials. The common types of sedimentary rocks include: breccia, conglomerate, sandstone, siltstone, and shale.Metamorphic rocks: These are the type of rocks formed when sedimentary or igneous rocks are being subjected to high pressure or high heat. The common types of metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.The above classification is very important especially to geologists for easy identification of rock that are under study which can easily be differentiated through their various composition and texture.
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You’ve now seen that earth’s varying distance cannot be the cause of our seasons. So what is the cause of the seasons?.
Axis of the earth is inclined to its orbital plane. This is the axis around which it spins. This triggers the change of the seasons.
When the earth faces the sun, it is summer in the parts facing the sun. When the axis of the globe is facing away, winter is to be expected. Due to the axis' 23 1/2-degree tilt, the North Pole never points exactly at the Sun, but rather as close as it can during the summer solstice and as far away during the winter solstice. In the midpoint between these two phases, spring, the earth's rotational axis is 90 degrees away from the sun. This shows that there are 12 hours in each day and night on this particular date.Why does our weather matter because of the tilt of the Earth's axis?
Each square centimeter of the earth receives more light (and heat) while the sun is overhead since it is dropping directly on you. Less heat can be absorbed (per square centimeter) when the sun is lower in the sky because the light is more evenly distributed over the earth's surface. The sun is higher when you are on the portion of the earth where the axis points more towards the sun and lower when you are on the part of the earth where the axis points away from the sun because of the tilt of the earth's axis.Hence the answer is inclination of earth's axis.
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the answer highlighted i dont know if its wrong or not so please answer carefully
Answer:
It's correct your answer is D
what is the role of the nervous system in digestion?(1 point)to provide passage of nutrients throughout the bodyto provide passage of nutrients throughout the bodyto provide electrical signals to initiate peristalsisto provide electrical signals to initiate peristalsisto provide oxygento provide oxygento provide enzymes
The role of the nervous system is to provide electrical signals to initiate the mechanism of peristalsis.
What is the nervous system?The nervous system is an organ system aimed at transmitting information as electrical signals and neurotransmission in order to control movements, behaviors as well as automatic responses.
The nervous system controls smooth muscles of the gastrointestinal tract by receiving input that fiction as a command center for the different components that integrate the digestive system.
In conclusion, the role of the nervous system during the process of digestion can be defined to provide electrical signals to initiate peristalsis.
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cardiovascular, cerebrovascular, and renal co-morbidities in covid-19 patients: a systematic-review and meta-analysis
By meta-analysis, it was found that cardiovascular, renal, cerebrovascular, and comorbidities in COVID-19 patients increase their severity and age may not play any role in this.
More than thirty-five million people have been infected by COViD-19. Diseases such as kidney diseases, cardiovascular diseases, and hypertension were seen as COVID-19 increasing factors. Various studies have been conducted to know whether age is a related factor to increased mortality and the relation between COVID-19 and co-morbidities.
The reports of different COVID-19 patients with different co-morbidities were collected and carefully analyzed. It was observed that most of the deceased patients were suffering from hypertension, followed by cardiovascular diseases and cerebrospinal diseases. It was concluded that only to some extent age contributes factor to the increased risk.
Thus, by meta-analysis, it was found that cardiovascular, renal, cerebrovascular, and comorbidities in COVID-19 patients increase their severity, and age may not play a role in this.
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Which part of a cell synthesises proteins?
Answer:
Ribosomes are the sites in the cellsell in which protein synthesis takes place.
Two separate polypeptide chains are most commonly covalently linked to each other through.
Two separate polypeptide chains are most commonly covalently linked to each other through disulfide bonds.
A peptide is two or more amino acids that are held together with the help of peptide bonds
A protein chain has two ends: one is the amino terminus (positively charged) and the other one is the carboxy terminus (negatively charged).
Disulfide bonds which are mostly found between the sulfur-containing side chains of cysteines contribute to the formation of the tertiary structure of proteins.
These bonds act like safety pins as they keep the different polypeptide chains held together firmly and give a shape to the protein folding.
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What structural property of dna gave watson and crick the idea that dna replication was likely to proceed via a semiconservative mechanism?.
The structural property of DNA that gave Watson and crick the idea that DNA replication was likely to proceed via a semiconservative mechanism is the The complementary nature of base pairing between the two strands.
The semi-conservative approach seems to be most likely based on the structure of DNA, in which each strand of DNA acts as a template to create a new, complimentary strand. because of this semi conservative base pairing the new strand is formed due to complimentary bases present on each strand.
Process of Semi conservative DNA replication:
The double helix splits into two single strands when the enzyme DNA helicase dissociates the hydrogen bonds holding the two polynucleotide DNA strands together.Then, every initial single strand serves as a model for a new strand. Through complementary base pairing, free-floating DNA nucleotides connect to the exposed bases on each original template strand.The enzyme DNA polymerase connects the nucleotides of the new strands. The sugar-phosphate backbone is created by this. The bases on the original and new strands create hydrogen bonds, and the strands twist to form the double helix.Semi-conservative replication is the process of replicating DNA by using one strand from the original DNA molecule and one new strand in each new DNA molecule.To learn more about DNA replication visit the link:
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