Answer:
B. The Blood Travels Back to the Heart In a Vein
The blood has traveled from the heart to the toes, the next step of the circulation process is the blood travels back to the heart in a vein.
What makes blood circulate in the body?The bloodstream is responsible for transporting oxygen and nutrients between all the cells in an organism. During the process, it cleanses the tissues of the remains of cellular activities, such as the CO² developed during cellular respiration, in addition to driving hormones throughout the body.
Circulation is the mechanism by which blood is distributed throughout the body with the help of the heart, arteries, veins and capillaries.
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A protein that is normally localized in the cytoplasm has been engineered so that it will be secreted from the cell instead.
Which of the following represents the most likely pathway for the protein after it has been completely synthesized?
A. sER \to Golgi \to secretory vesicle \to environment
B. rER \to secretory vesicle \to Golgi \to environment
C. rER \to Golgi \to sER \to cytoplasm \to environment
D. cytoplasm \to rER \to Golgi \to secretory vesicle \to environment
E. rER \to Golgi \to secretory vesicle \to environment
Answer:
E. rER \to Golgi \to secretory vesicle \to environment
Explanation:
A protein that is normally localized in the cytoplasm has been engineered so that it will be secreted from the cell instead will follow the following sequence:
Rough endoplasmic reticulum (RER) (where the protien is being snthesized)-------------> Golgi apparatus (where the sorting and packaging of the protien occurs)-----------------------> Secretory vesicles-------------------------> Environment.
Hence E. rER \to Golgi \to secretory vesicle \to environment is the right answer.
Please help *10* points
Answer:
You're answer is Codon.
Which of the following statements is true? 1.Innate defenses are enough to keep a person healthly. 2.Adaptive defenses include humoral immunity only. 3.Adaptive defenses include both humoral and cellular immunity.
Answer:
Which of the following statements is true? 3. Adaptive defenses include both humoral and cellular immunity.
Explanation:
Definitely Innate defenses are not enough to keep a person healthly, there are a lot of other factors to take into account when we are considering people's health. Adaptive defenses not only include humoral immunity (mediated by macromolecules) , but also cellular immunity (does not involve antibodies).
The true statement among those provided is that adaptive defenses include both humoral and cellular immunity. Humoral immunity involves antibodies from B cells, while cellular immunity involves T cells that target infected cells or pathogens.
The subject of this question is the immune system, specifically the differences between innate and adaptive immune defenses. Addressing the true statement from the options provided:
Innate defenses alone are not always enough to keep a person healthy, as there are numerous pathogens that can overcome these basic defenses.Adaptive defenses include more than just humoral immunity; they also encompass cellular immunity.Adaptive defenses include both humoral and cellular immunity. Humoral immunity involves antibodies produced by B cells, that bind to foreign substances in the blood and mucosal surfaces, whereas cellular immunity involves T cells that target and destroy infected host cells or pathogens.Therefore, the true statement is that adaptive defenses include both humoral and cellular immunity.
Darwin proposed a new theory of how evolution works. What theory is this and how does it work?
Answer:
Darwin defined evolution as "descent with modification," the idea that specs change over time to give rise to new species and share a common ancestor. The mechanism that Darwin proposed for evolution is natural selection.
Explanation:
I majored in Biology
Which physical characteristics are found on earth but not on the moon ?
Answer: Oceans, active volcanoes, an atmosphere, life, etc.
The physical characteristics are found on earth but not on the moon are trees, Oxygen, Water.
What are the characteristics of moon?The Moon is like a desert with plains, mountains, and valleys. It also has many craters, holes created when space rocks hit the surface at a high speed. There is no air to breathe on the Moon. The Moon travels around the Earth in an oval-shaped orbit.
The moon has mountains, plateaus, plains and depressions on its surface. In the reflected light on the Earth these features look like shadows. Hence, we see shadows on the surface of the Moon.
These eight phases are, in order, new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter and waning crescent. The cycle repeats once a month (every 29.5 days).
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The term used to describe the number of individuals moving into a population is ___ . *
5 points
growth pattering
immigration
logistic growth
emigration
Answer:
the correct answer D. Emigration
An example of a mutualistic association between a plant and a fungus would be
Answer: mycorrhiza
Explanation: mycorrhiza is the symbiotic relationship that occurs between a fungi and the root of plants.here the fungi helps the plant absorbs nutrients and water from the soil.the fungi encloses the root and it's hyphae penetrates into the root cell.the fungi in return gets food from the plant.in this interaction,they both benefit.
The association may be ectomycorrhizal or endomycorrhizal. In ectomycorrhizal,the fungi grows on the surface of the root and it's hyphae coats the roots.in endomycorrhizal,the fungus does not necessarily coat the root,but few hyphae penetrates the epidermal cell and the cortex of the root.it is said to be living within the cells of the root.
A mutualistic association between a plant and a fungus is exemplified by mycorrhizal interactions. In this symbiotic relationship, both the plant and the fungus benefit by exchanging nutrients.
Explanation:An example of a mutualistic association between a plant and a fungus would be mycorrhizal relationships. Mycorrhizae are symbiotic relationships between fungi and plants, where the fungi colonize the root system of a host plant, providing it with essential nutrients like phosphorus while in return, the plant provides the fungi with carbohydrates, substances synthesized during photosynthesis. This interactive association supports the survival and growth of both the fungus and the plant, defining a mutualistic relationship.
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The hormone glucagon ________. a.stimulates conversion of glucose to glycogen or fat for storage b.raises blood glucose, accelerates transport of glucose into body cells
Answer:
Raises blood glucose (Ans B)
Explanation:
In the pancreas, alpha cells are present and it produces the hormone known as glucagon. Glucagon helps to control blood glucose levels with the hormone insulin. For controlling the blood sugar level, it acts on the liver in different ways:
1) A process is known as glycogenolysis, in which it promotes the modification of stored glycogen in the liver to glucose, and released into the bloodstream.
2) A process is known as gluconeogenesis, in which it stimulates the generation of glucose from an amino acid.
3) To maintain the blood glucose levels it decreases glucose consumption by the liver so that as much as glucose can be discharged into the bloodstream.
Which of the listed items are TRUE for sauropods?
Select ALL that apply.
A. unidirectional respiration likely lived in large groups
B. hypothesized lifespans of roughly 100 years
C. commonly lived in swamps
D. carried their tails off of the ground
E. forelimbs and hindlimbs both plantigrade
Answer:
A. Unidirectional respiration, likely lived in large groups
B. hypothesized lifespans of roughly 100 years
D. carried their tails off of the ground
Explanation:
Saurapods are long neck hebivores with following characteristics :
Obligate QadrupedalityUnidirectional respirationLikely lived in large groupsVery large Weak teethHypothesized lifespans of roughly 100 yearsCarried their tails off of the ground Extracervical vertebraeReduced skull sizeTooth to tooth occlusion for precise bitesFour or more sacralsReduced number of phalanges on manus.Hence options A, B and D are correct.
Which of these components of the human body can control heartbeat?
I.Epinephrine (Adrenaline),
II. ADH Hormone,
III. Nerves from the brain
Nerves from the brain control heartbeat.
Explanation:The component of the human body that can control heartbeat is Nerves from the brain. The nerves from the brain carry electrical signals that regulate the contraction and relaxation of the heart muscles, resulting in a coordinated heartbeat. Epinephrine (Adrenaline) and ADH Hormone do not directly control the heartbeat, although they can have an indirect effect on it by affecting the activity of the nerves or the heart muscles.
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The beginning of ventricular systole is when blood flowing back toward the relaxed ventricles causes the semilunar valves to close.The beginning of ventricular systole is when blood flowing back toward the relaxed ventricles causes the semilunar valves to close.A) TrueB) False
Answer:
false.
Explanation:
These are the valves between the aorta and the left ventricles and between the pulmonary artery and the right ventricle.
Ventricular systole begins when the atrioventricular valves closes up due to rise in the pressure in the ventricles and the opening of seminular valves for blood to leave the ventricles into pulmonary and systemic circulation.
This signifies the beginning of ventricular contraction, as the closure of the atrioventricular Valves between the atria and the ventricles prevent the mixing up of oxygenated blood and deoxygenated blood in the ventricles . It ensures complete emptying of the ventricles before returning blood from the atria enters again for another cycle.
.
Collectively they (semilunar valves)prevent back flow of blood from the arteries(aorta and pulmonary arteries) back into the ventricles.
The beginning of ventricular systole is indeed when the semilunar valves close to prevent the backflow of blood as the ventricles begin to relax after systolic contraction. The statement is true.
Explanation:The statement, 'The beginning of ventricular systole is when blood flowing back toward the relaxed ventricles causes the semilunar valves to close', is True. Ventricular systole refers to the phase of the cardiac cycle when the ventricles contract to eject blood into the arteries. The start of this process is indeed marked by the closure of the semilunar valves. These valves close to prevent the backflow of blood into the ventricles from the arteries, as the pressure in the ventricles drops below the pressure in the arteries, which happens when the ventricles start to relax after the systolic contraction. Therefore, the closing of the semilunar valves marks the end of ventricular systole and the start of the diastolic phase, when the ventricles are relaxed and begin to refill with blood.
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Which of these is a factual statement about carbon? 1 point Burning rainforests helps restore equilibrium to the carbon cycle There is no relationship between carbon emissions and global climate change Carbon is the fourth-most abundant element in the universe Humans use far too much carbon-based fuel
The factual statement is 'Carbon is the fourth-most abundant element in the universe'. Carbon is integral to living organisms and is heavily used as fossil fuel, contributing to increased atmospheric carbon dioxide levels and thus, driving global climate change. Burning rainforests disrupts, rather than restores, the carbon cycle equilibrium.
Explanation:The factual statement among the options provided is 'Carbon is the fourth-most abundant element in the universe'.
Carbon plays a vital role in the structure of macromolecules and is of primary importance to living organisms. Also, it's worth noting that humans have used carbon-based fuels extensively since the beginning of the Industrial Revolution, leading to an increase in carbon dioxide levels in the atmosphere. This increase has subsequently been associated with climate change, forming a direct relationship between carbon emissions and global climate alteration.
Moreover, the destruction of rainforests does not assist in restoring the equilibrium of the carbon cycle, but rather contributes to carbon dioxide release and further exacerbates climate change.
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The products of restriction digestion can be visualized by gel electrophoresis, which separates fragments based on their size. View Available Hint(s) The products of restriction digestion can be visualized by gel electrophoresis, which separates fragments based on their size. True False
Answer:
True
Explanation:
Gel electrophoresis is a technique that is commonly used in the laboratory to separate charged molecules, like DNA, according to their size. The results of restriction digestion can be observed using this process. Restriction Digestion involves the process of cutting DNA molecules into smaller fragments using special enzymes called Restriction Endonucleases. And this way any inhibition of the restriction enzymes which prevents digestion can be observed and controlled.
What activities would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?
Answer:
receptor tyrosine kinase activity.
Explanation:
Theses are the receptors present on the cell surfaces of cells with affinity fpr specific polypeptides- gwoth factors, hormones and cytokines. They are regulators of normal cellular processes. E.g e development and progression of cancer in most cells
Mutation in their protein sequence leads to faulty protein expression.
Answer:
RTK activity
Explanation:
RTKs are considered to be transmembrane protein receptors that help cells interact with their neighbors in a tissue. They are also regarded as the high-affinity cell surface receptors for many polypeptide growth factors, cytokines, and hormones.
It should be understood that, the activation of Tyrosine-kinase receptor is that , the Inactive proteins within the cell bind to the phosphorylated tyrosine residues, the phosphate is transferred to the proteins, and the proteins become active.
Therefore, when the drug that specifically blocks the addition of phosphate groups to protein is used, it will definitely inhibit the activities of the Tyrosine-kinase receptor.
Why would you expect Greenland to have higher albedo than Africa ??
Greenland does have higher albedo as compared to Africa because of ice everywhere in greenland, and albedo is the melting of snow and ice.
Reason of having albedo in Greenland?Since 2000, the Greenland albedo should be reduced at the accelerated rate and it should be increased in the surface temperature.
Also, in the case when the temperature is increased more snow so it should be melted and associated albedo reduced at the higher elevations in near future.
In this way, it should have a higher albedo.
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Scientists expect Greenland to have higher albedo than that of Africa because the snow in Greenland is fresh and thicker than that of Africa.
What are the weather conditions in Greenland?The climate in the Greenland has continental characteristics with very cold winter conditions which are down to minus 50°C in the northern Greenland. The temperature is very rarely above zero degree Celsius from the months of September to May.
Scientists notice that the albedo of the ice sheet is much higher in the winters when much of the Greenland area is covered by the fresh snow. During the spring season, the albedo declines rapidly as the snow begins to melt with the increase in temperature, reaching a minimum in the summer season and rising again as the fall transitions back to winter.
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If the two traits that Mendel looked at in his dihybrid cross of smooth yellow peas with wrinkled green peas had been controlled by genes that were located near each other on the same chromosome, then the F2 generation __________.a.Would have contained four phenotypes in a 9:3:3:1 ratiob.Would have contained only individuals that were heterozygous at bothlocic.Would have deviated from the 9:3:3:1 phenotypic ratiod.Would have contained no individuals that were heterozygous at both loci
Answer:
c. Would have deviated from the 9:3:3:1 phenotypic ratio
Explanation:
If two genes are linked together on the same chromosome, the phenotype of the F2 generation would have deviated from 9:3:3:1.
Two genes whose loci are close on the same chromosome are said to be linked. Linked genes have higher frequency of recombination than genes that are not linked.
Hence, while genes that are not linked assort independently to produce 9:3:3:1 phenotypic ratio at F2, linked genes do not assort independently and the higher frequency of recombination ensures that they standard phenotypic ratio is deviated from.
The correct option is c.
In peas, if the allele for yellow is Y, the allele for the contrasting trait green is _____________ (the answer is case sensitive)
Answer:
y
Explanation:
I looked it up in quizzlet
The allele for the green trait in peas, contrasting the dominant yellow represented by 'Y', is represented by 'y'.
Explanation:In peas, given that the allele for yellow is Y, the allele for the contrasting trait green is y. This is because in Mendelian genetics, dominant traits are represented by uppercase letters, while recessive traits are denoted by lowercase letters. In this case, the yellow color in peas is the dominant trait, which is why it is represented as Y. Hence, the corresponding allele for green peas, which is the recessive trait, would be a lowercase 'y'.
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Match each leaf modification to its corresponding purpose.
Answer:
here is the answer
Explanation:
Why are advantageous traits more likely to be passed onto offspring
Answer:
For the sake of continuous life flow, advantageous traits are more likely to be passed onto offspring
Explanation:
Advantageous traits are the traits that have helped the parents to survive in adverse condition. These advantageous traits being helpful in survival are passed on to the next generation so that they can also survive and reproduce fertile and viable offspring.
As per Darwin’s theory an organism develop advantageous traits to be fit among its group member and hence survive and reproduce.
For the sake of continuous life flow, advantageous traits are more likely to be passed onto offspring
What is true regarding normal quiet expiration of air?
Answer:
Normal quiet expirarion of air is known as Tidal volume which is equal to 500 mL .Explanation:
Normal quiet expiration or Tidal volume is a expiration of air with each normal breath . This is about 500 mL . It is composed of about 350 mL of alveolar volume and about 150 mL of dead space volume . The alveolar volume consist of the air that reaches the respiratory surface of alveoli and involve in gaseous exchange . The dead space volume consist of air that does not reach the respiratory surfaces . The lowest value is of Tidal volume . There is an extra amount of air that can be expired forcibly after a normal expiration i.e., known as expiratory reserve volume which is equal 1000 mL of air .
Morbidity rate is an important parameter used by epidemiologists to measure disease. If there are 10 new cases of measles per 10,000 individuals in a population in a two-month period, the morbidity rate is _______.
Answer:
0.1%
Explanation:
Morbidity rate (Mr) = n sample / number of cases
Mr = 10 / 10,000 = 0.1%
Answer:
0.1%
Explanation:
If there are 10 new cases of measles per 10,000 individuals in a population in a two-month period, the morbidity rate is 0.1% for the two-month period.
The morbidity rate of a disease can be defined as the rate at which such disease appears in a population. On the other hand, it is the proportion or the percentage of a population with such disease in a particular period of time.
Hence, for a disease that infects 10 people out of 10,000 individuals in a population within a two-month period, the morbidity rate can be calculated as:
10/10,00 x 100 = 0.1% per two-month
An organism grown in a high nutrient liquid broth to high turbidity always appears to produce a blue pigment and even when a large inoculum is transferred to a nutrient rich agar plate it appears blue. When the researcher noticed it never appears blue when very small colonies were grown in low nutrient agar plates. What is the most plausible conclusion?
Answer:
The blue pigment production is linked to quorum sensing.
Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if true, would be cause for this reclassification?
Answer:
The two forms interbreed often in nature, and their offspring have good survival and reproduction.
Explanation:
Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. The two forms interbreed often in nature, and their offspring have good survival and reproduction would be cause for this reclassification of the myrtle warbler and Audubon's warbler
Instinct theories of aggression would have the most difficulty accounting for 1.biochemical influences on aggression. 2.silent and social aggression in animals.3.unprovoked outbursts of aggression. 4.wide variations of aggressiveness from culture to culture.
Answer:
4.wide variations of aggressiveness from culture to culture.
Explanation:
According to instinct theory of aggression, aggression is an innate trait and people are born with varying levels of it. It is a result of biological drive for protecting ourselves from danger and is instinctual.
Instinct theory focuses more on the innate property of aggression thus it has most difficulty in explaining the effect of culture and environment on it. People in different cultures show different levels of aggression which can not be explained just on biochemical or genetic terms. Even two identical twins born and brought up in different culture might exhibit different levels of aggression.
Final answer:
Instinct theories of aggression struggle most with explaining the wide variations of aggressiveness from culture to culture, as these theories often overlook the profound impact of cultural and environmental factors on aggressive behavior.
Explanation:
The instinct theories of aggression would have the most difficulty accounting for wide variations of aggressiveness from culture to culture. Instinct theories often suggest aggression is a natural and inherent response, potentially overlooking the significant impact of cultural, social, and environmental factors. For example, while some cultures may value aggression and view it as a sign of strength or leadership, others may encourage peaceful resolution and cooperation, leading to lower levels of aggression. This cultural variability challenges the universality proposed by instinct theories. Additionally, the role of cultural norms, education, and societal expectations in shaping aggressive behavior indicates that aggression is not solely the product of innate tendencies but is significantly influenced by learned behaviors and cultural context.
L
What is the main cause of an earthquake?
o force of gravity
o the shaking of the ground
o stress caused by plate movement
waves that ripple from the epicenter
Answer:
c or stress caused by plate movement
Explanation:
did the assignment
Two scientists are debating how to classify a new animal species that they have discovered. They observe that the animal is capable of producing sperm.
What statement would they most likely make about the new species?
A.This animal produces offspring that are genetically different from itself.
B.This animal produces offspring that are genetically identical to itself.
C.This animal’s sperm will join with spores to produce offspring.
D.This animal’s sperm will undergo binary fission to produce offspring.
B. This animal produces offspring that are genetically identical to itself
Answer:
the answer is A
Explanation:
The primary somatosensory cortex is located in the ________.
Answer:
parietal lobe
Explanation:
Question 1 (1 point)
The diagram shows a bean plant growing in soil.
Which labels best complete the diagram?
Answer:
X: Positive gravitropism
Y: Negative gravitropism
Explanation:
i just did the quiz and got it correct
Answer: my boy syeddit is
Antibiotics are prescribed for a child with otitis media who underwent a myringotomy with insertion of tympanostomy tubes. The nurse provides discharge instructions to the parents regarding the administration of the antibiotics. Which statement, if made by the parents, indicates understanding of the instructions provided? 1."Administer the antibiotics until they are gone."2."Administer the antibiotics if the child has a fever."3."Administer the antibiotics until the child feels better."4."Begin to taper the antibiotics after 3 days of a full course."
Answer:
The preferable option will be - 1.
1. "Administer the antibiotics until they are gone."
Explanation:
A myringotomy is the insertion of tympanoplasty tubes into the middle ear to promote drainage of purulent middle ear fluid, equalize pressure, and keep the ear aerated. The nurse must instruct parents regarding the administration of antibiotics. Antibiotics need to be taken as prescribed, and the full course needs to be completed. The parents should complete the full course antibiotic therapy.
Describe the location of the four chambers of the heart.
Answer:
The heart has four chambers: The right atrium receives blood from the veins and pumps it to the right ventricle. The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.
Explanation:
The four chambers of the heart are Right Atrium, Left Atrium, Right Ventricle, Left Ventricle.
The right atri.um is located in the upper right corner of the heart superior to the right ventric.le (superior to the right ventricle and anteromedial to the left atrium)
The left atriu.m is located in the posterior aspect of the right at.rium, next to the superior vena cava (superior to the left ventric.le, posterolateral to the right at.rium, posterior to the aortic root, and anterior to the esophagus)
The right ven.tricle is located in the lower right portion of the heart below the right at.rium and opposite the left ventri.cle (extends from the right atri.um to the ape.x of the heart)
The left ven.tricle is located in the bottom left portion of the heart below the left atr.ium, separated by the mit.ral valve (in a posterior and lateral location relative to the right ven.tricle)
Sorry for the periods in between the words, it kept saying it contained innappropriate words even though it didn't