C.Engulfing a foreign pathogen
Explanation:
Phagocytosis is a critical part of the immune system.
Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes.
The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against.
Question:
Imagine that you're an endocrinologist and a patient visits you because they constantly feel restless. You notice that they have a high heart rate and high blood pressure, even at rest.
Which of the following statements best describes a possible diagnosis to explain these symptoms?
Answer: CORRECT (SELECTED)
The patient is experiencing an issue with their adrenal glands, causing a hyper-secretion (over-secretion) of adrenaline hormone.
Explanation:
Normally, the "fight-or-flight" response only occurs at times of emergency. Because this patient is experiencing symptoms of the "fight-or-flight" constantly, they have too much adrenaline in their body due to hyper-secretion from adrenal glands.
What is the prediction of weather called?
Please help ASAP!
Survey
Prediction
Forecast
Poll
A farmer selects only the largest tomato plants to reproduce over multiple generations. What type of selection is this an example of?
Sexual Selection
o
Evolution
o
Natural Selection
o
Artificial Selection
Answer:
Artificial selection
Explanation:
The farmer is selecting the most desirable traits and breeding the tomatos to achieve these traits in future generation. A human is artificially altering evolution.
You are graduating from nursing school in three months and have already lined up a new job. However, your employer informs you that before you start your job, it is mandatory for you to be vaccinated against hepatitis B, a double-stranded DNA virus that can cause the disease hepatitis. Your friend wonders why you need to get the vaccine. You aced your microbiology class and you know a lot about both viruses and vaccines, so you give your friend a mini lesson. You friend wonders whether the same type of virus can cause both an acute and a persistent infection?
a. No—a virus causes either an acute infection or a persistent infection, butnever both.
b. Yes—the initial infection might be acute but the virus can later become latent by becoming integrated into the host cell genome.
c. Yes—acute and persistent infections are really the same thing except that people with persistent infections recover more quickly than those with acute infections.
d. Yes—acute and persistent infections are really the same thing except that people with acute infections recover more quickly than those with persistent infections.
e. No—if the initial infection is acute, the virus would have to mutate in the host before being able to cause a persistent infection.
Answer:
The correct answer is OPTION B (b. Yes—the initial infection might be acute but the virus can later become latent by becoming integrated into the host cell genome).
Explanation:
The hepatitis B virus has an unusual feature similar to retroviruses. This makes it deadly and difficult to treat when it is at an advanced stage. It basically attacks the liver and can cause both an acute and persistent infection.
In the acute stage, the cells are newly attacked and the body is fighting it off, the symptoms might start showing depending on how long it has invaded the body. These symptoms include dark urine, vomiting, yellowing of the skin and eyes (jaundice), the liver can still fail at this stage causing death.
At the persistent stage, which is already chronic, the invaded cells have been weakened, the symptoms are slow to resolve therefore it is in a prolonged stage which can lead to liver cancer and eventual death.
please help me, i will mark u brainliest if it is correct :)
PLEASE HELP ASAP!!!
13. Populations of organisms grow at an _______ rate, but ____ factors such as food, habitat, predators, weather, disease, climate, & temperature can affect the maximum population size an area can support.
14. Sea otters are an example of a _________ species where the effects of overhunting this population of organisms will severely affect the population #s of other species.
15. _______ is determined by the # of species in a specific area as well as the # of different kinds of species in a specific area.
Answer:
. Exponential, limiting
14. Keystone
15. ecosystem
Explanation:
According to the Punnett Square shown above
A.
there is a 50% probability that an offspring will have brown eyes and a 50% probability that an offspring will have blue eyes.
B.
there is a 75% probability that an offspring will have blue eyes and a 25% probability that an offspring will have brown eyes.
C.
there is a 75% probability that an offspring will have brown eyes and a 25% probability that an offspring will have blue eyes.
D.
there is a 100% probability that an offspring will have one brown eye and one blue eye.
Answer:
C. There is a 75% probability that an offspring will have brown eyes and a 25% probability that an offspring will have blue eyes.
Explanation:
Note that the brown eyes is the dominant trait, denoted by B, while blue eyes is the recessive trait, denoted by b. In all cases of the Punnett square, if there is a dominant and recessive trait, the dominant trait will always come out on top.
The given Punnett square:
[tex]\left[\begin{array}{ccc}&B&b\\B&BB&Bb\\b&Bb&bb\end{array}\right][/tex]
Note that there are 3 options (BB, Bb, Bb) respectively, in which there is the dominant trait B (brown eyes). Only in one case is there only the recessive trait b (blue eyes), or a 1/4 chance of obtaining blue eyes. Therefore, there is a 3/4 chance of obtaining a brown eye:
C. There is a 75% probability that an offspring will have brown eyes and a 25% probability that an offspring will have blue eyes.
At high temperatures enzyme activity declines
because of:
Answer:
protein get denatured
Explanation:
at high temperatures enzyme activities in our body decline due To the proteins getting denatured
How gamete formation leads to genetic variation.
Answer:
The process that produces gametes is called meiosis. During meiosis, homologous chromosomes (1 from each parent) pair along their lengths. ... At each chiasma, the chromosomes break and rejoin, trading some of their genes. This recombination results in genetic variation.
Answer:
Explanation:
During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote.
what is this diagram representing?
Which best describes the sympathetic nervous system?
the brain and spinal cord
rest and digest
fight or flight
the sensory and motor neurons
Answer:
the answer to this question is fight or flight
Which of the following lists accurately represents the increasing complexity of genetic materials?
O base pairs, DNA, gene, chromosome, cell
O DNA, base pairs, gene, chromosome, cell
O gene, chromosome, cell, base pairs, DNA
gene, chromosome, DNA, cell, base pairs
The correct answer is A. Bases pairs, DNA, Gene, Chromosome, Cell.
Explanation
Nitrogen bases are chemical compounds that compose DNA and RNA, in the case of DNA the bases are adenine, thymine, guanine, and cytosine, while RNA is made up of uracil, adenine, guanine, and cytosine. Additionally, DNA makes up genes, which are structures that store information that is passed on to offspring. Also, genes are organized to form chromosomes (more complex structures) of genetic information. Finally, there are cells, in them are chromosomes, fundamental for the reproduction of an organism. Therefore, the correct answer is A. Bases pairs, DNA, Gene, Chromosome, Cell.
Which metal are extracted from magnetite and bauxite?
An organisms phenotype is
A. Its parents genes
B. Its genetic make up
C. Its physical appearance
D. Its heterozygosity
Answer:
C) Its physical appearance
Explanation:
The way I remember what phenotype is, is that both physical and phenotype begin with a p.
Hope this helped :)
Why are free radicals a problem?
Answer:
Free radicals are unstable atoms that can damage cells, causing illness and aging. Free radicals are linked to aging and a host of diseases, but little is known about their role in human health, or how to prevent them from making people sick.
Explanation:
Answer:
free radicals are unstable atoms uwu
why do the body need specialized cells?
Answer: Hello, There! your Answer is Below!!
specialized cells allow for different types of tissues to exist in our organs, so that the organs can perform different functions in our organ systems.
Explanation:
Cell specialization allows new cells to develop into a range of different tissues, all of which work together to make living organisms function as a whole.
Hope this helps!!!
Have a great day!!!
During the normal cardiac cycle, the bicuspid valve opens when: the pressure in the right ventricle is greater than in the right atrium b. the pressure in the right atrium is greater than in the right ventricle c. the pressure in the left atrium is greater than in the left ventricle d. the pressure in the left ventricle is greater than in the left atrium e. the pressure in the right ventricle is greater than in the pulmonary artery
Answer:
b. the pressure in the right atrium is greater than in the right ventricle
Explanation:
A bicuspid valve is an aortic valve that only has two leaflets, instead of three. The function of aortic valve is to regulates blood flow from the heart into the aorta. The valve opens and closes because of pressure differences. The opening of the valve occurs when the pressure is greater in the left atrium than ventricle whereas, closing happens when there is greater pressure in the left ventricle than atrium so we can conclude that the pressure in the right atrium is greater than in the right ventricle.
Which of these is a long-term human health issue likely caused by air pollution?
A. Bioremediation
B. Damaged hearing
C. Dementia
D. Heart disease
Answer:
D
Explanation:
Heart disease is a long-term human health issue that is likely caused by air pollution. Thus, the correct option is D.
What is Air pollution?Air pollution may be defined as any unwanted or contaminated impurities present in the air of living surrounding that causes harmful health effects to organisms.
Dementia is caused by the loss of nerve cells and their significant connections in the brain and is not likely the source of air pollution.
Majorly heart diseases are caused by the inhalation of contaminated air that forms a layer of harmful substances in the heart and lungs. Some of them include lung cancer, cardiovascular death, asthma, etc.
Therefore, the correct option for this question is D.
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Plz help What happens to chromosomes during crossing-over?
1. Sister chromatids are pulled apart by spindle fibers.
2. Sister chromatids separate at the centromere.
3. Homologous chromosomes exchange corresponding segments of DNA.
4. Homologous chromosomes move from one side of the cell to the other.
Answer:
How does crossing over affect the alleles of a chromosome?
Since the chromosomes are homologous, breaks at corresponding points mean that the segments that are broken off contain corresponding genes, i.e., alleles. ... Crossing over results in recombination of genes found on the same chromosome, called linked genes, that would otherwise always be transmitted together.
As the amount of light received by this plant increases, its rate of
photosynthesis HELP!!!!!!
The chordates share several features which have played a significant role in the evolution of the phylum. Check all of the features that one would use to exclusively classify members of Chordata and not members of Echinodermata.
a. a postanal tail during embryonic development
b. pharyngeal pouches during embryonic development
c. an endoskeleton
d. a notochord on the dorsal side of the gut in the early embryo
e. deuterostomic development of the embryo
f. a hollow nerve cord
Answer: The following features classifies exclusively the members of Chordata:
a.) a postanal tail during embryonic development
b.) pharyngeal pouches during embryonic development
d.) a notochord on the dorsal side of the gut in the early embryo
f.) a hollow nerve cord
Therefore the correct options are a,b,d and f
Explanation:
The echinodermata and chordata phylum are both found in the kingdom animalia but possesses different features. The chordates has some features that helps distinguish it from other phylum and these include:
--> Pharyngeal pouches: these are openings to the exterior from the pharynx, the region just posterior to the mouth. In aquatic environment, they develop into pharyngeal slits that allow for the exit of water that enters the mouth during feeding.
--> a postanal tail during embryonic development
--> A notochord: The chordates possess a flexible rod of tightly packed cells called notochord which is located at the dorsal side of the gut in the early embryo.
--> A hollow nerve cord: This is a tubular nerve cord that is derived from ectoderm that rolls into a hollow tube during embryonic development.
These features of chordata has played a significant role in the evolution of the phylum. This is so because the vertebrata is a subphylum of the chordates. For example, the nerve cord found in most chordate embryos develops into the brain and spinal cord, which comprise the central nervous system seen in vertebrates.
Using examples where supportive, discuss the following statement, "From vaccinations and diagnostics, to explaining the root causes of many diseases, immunology is having a profound impact on life today"
Answer:
Yes.
Explanation:
Yes, immunology is having a profound impact on life today because this immunology provides information about the study of immune system. To find out the root cause of many disease, the study of immune system and its responses against many diseases are important in order to counter the infection. The immune system protects us from infection through various defense mechanism. If the immune system is not working properly, it can result in disease, such as autoimmunity, allergy and cancer etc.
Describe how and why this happens (try to do an easy description)
A comet in space continues to move without slowing down or slowing up.
Answer:
because there is no force acting in the comet making it able to go on forever without change in its path or speed
explanation
newton's first law
During the binary fission of bacteria, what events must occur before the cell splits into two new cells?
Select all that apply.
Membrane-bound organelles are copied so that both cells get a set.
Copies of the circular DNA molecule move to opposite ends of the cell.
The cell’s primary DNA molecule is copied.
A pilus is used to transfer DNA from one cell to the other.
Answer:
Copies of the circular DNA molecule move to opposite ends of the cell.
Explanation:
Before binary fission occurs, the cell must copy its genetic material (DNA) and segregate these copies to opposite ends of the cell. Then the many types of proteins that comprise the cell division machinery assemble at the future division site.
Answer:
Copies of the circular DNA molecule move to opposite ends of the cell.
The cell’s primary DNA molecule is copied.
Explanation:
Before binary fission occurs, the cell must copy its genetic material (DNA) and segregate these copies to opposite ends of the cell. Then the many types of proteins that comprise the cell division machinery assemble at the future division site.
You are studying a disorder that is based on the genetic composition at three loci. Assume that a dominant allele at any locus adds 5 units of risk for the disorder and that a recessive allele at any locus adds 3 units of risk for the disorder. Individuals with 26 or more units of risk develop the disorder. The environment does not affect the presence or absence of this disorder. How many risk units will be present in an individual of genotype AABbcc
Answer:
24
Explanation:
Given that:
At either locus, the expression of the dominant allele increases the risk by 5 units.
The assigned genetic sequence "AABbcc" has three dominant alleles, implying that it increases risk by 15 units.
At any locus, the expression of the recessive allele increases the risk by three units. The assigned genetic sequence "AABbcc" has three recessive alleles, which means it increases the chance by 9 units.
In an individual with the genotype AABbcc, the total number of risk units is = 15+9 = 24. This implies that the person does not develop the disease).
Which is the best description of thrust fault?
O A. A high-angle fault under tension
B. A low-angle fault under tension
C. A low-angle fault under compression
A
O D. A high-angle fault under compression
Answer:
D: A high-angle fault under compression
Explanation:
Answer:
A high-angle fault under compression
Explanation:
factors that affect one's growth
Answer:
10 Factors That Influence the Growth and Development of a Child:
HeredityEnvironmentSexExercise and HealthHormonesNutritionFamilial InfluenceGeographical InfluencesSocio-Economic Status Learning and ReinforcementExplanation:
Kendrick made a model that included kidneys, liver, large intestine, and bladder. What is the main function of the body system that Kendrick built a model of?
Answer:
A
Explanation:
The main function of the body system that Kendrick built a model of is it gets rid of wastes that the body produces. So, the correct option is A.
What is Body system?A body system is defined as a collection of tissues and organs that cooperate to perform a single function for the body. Digestive system, respiratory system, circulatory system and nervous system are some examples of body systems.
The primary purpose of the bodily system that Kendrick modeled is the elimination of waste products that the body produces. The body's excretory system, which includes the kidneys, liver, large intestine and bladder, is responsible for eliminating waste products from the body and maintaining a healthy balance of fluids and electrolytes.
Therefore, the correct option is A.
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¿Qué sucede con un pasajero que está de pie en un autobús cuando este inicia el
movimiento?
¿Por qué sucede eso?
Answer:
El pasajero se mueve hacia atrás.
Explicación:
Cuando el autobús comienza a moverse hacia adelante, el pasajero que está parado en un autobús se mueve hacia atrás debido a la inercia. La inercia es una propiedad en la que un cuerpo resiste cualquier cambio en su estado de reposo o movimiento. Al principio, el pasajero está en reposo, por lo que cuando el autobús comienza a moverse en la dirección de avance, el pasajero se mueve en la dirección de retroceso para permanecer en reposo debido a la propiedad de la inercia. Por eso el pasajero se mueve hacia atrás.
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What is the difference between anatomy and physiology?
Answer:
4th Option
Explanation:
Anatomy is the study of the body's structures; physiology is the study of how the body's structures function.
Answer:
Explanation:
the answer is c
Phalloidin is a toxin from a toadstool (mushroom). You are studying actin dynamics and the effect of phalloidin. You add G-actin and ATP to a test tube and allow the reaction to come to equilibrium. This produces the light scattering plot below. When you add phalloidin, what will happen to the line?
Answer:
Dissociation of actin subunits occurs.
Explanation:
When we add phalloidin to a solution containing G-actin, the phalloidin binds to actin filaments more tightly as compared to actin monomers which leads to a decrease in the constant rate of dissociation of actin subunits from the ends of the filament. This dissociation stabilizes the actin filaments through the prevention of filament depolymerization. So we can conclude that addition of phalloidin to actin leads to stabilizing of actin filaments.