Explanation:
Density dependent inhibition is the process exhibited by most normal (anchorage dependent) animal cells in culture that stop dividing once a critical cell density is reached
The critical density is considerably higher for most cells than the density at which a mono-layer is formed
As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they signal each other to stop dividing
Normal cells proliferate until they reach finite density but cancer cells are not sensitive to density dependent inhibition
In the graph to the right:
Trial A (no immunity) is the _ line. Trial B (25% immune) is the _ line. Trial C (50% immune) is the _ line.
The trial in which the disease spread the least was Trial _.
In Trial C, of the 10 people who were not immune, _ people never got the disease.
Answer:
Trial A is the blue line.
B is the orange line.
C is the green line.
The trial in which the disease spread the least was Trial C.
3 people never got the disease.
Explanation:
The more immune, the less the disease spread.
In Trial C, if 10 people were immune and 7 were infected and there were 20, then 3 never got infected.
Trial A (no immunity) is the blue line. Trial B (25% immune) is the orange line. Trial C (50% immune) is the green line. The trial in which the disease spread the least was Trial C.
What is Immunity?Immunity may be defined as the capability of the individual's body to recognize foreign substances and prevent them from causing any type of illness or disease. It generally protects the body from infectious diseases.
According to the context of this question, the more immunity, the less the chances of disease spread. So, when there is no immunity in the blue line, the number of infected people is significantly high.
And when immunity is maximum in the green line (50%), there would be less number of infected individuals. In Trial C (green line) if there would be 10 people who possess a high level of immunity and 7 were infected and if there were 20, then 3 never got infected.
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The effects that one’s emotions have on other people refer to the ____ functions of emotions.
Answer:
This question lacks options, options are:
A. Intrapersonal.
B. Interpersonal.
C. Existential
D. Phenomenological
The correct answer is B.
The effects that one’s emotions have on other people refer to the interpersonal functions of emotions.
Explanation:
Emotion is a complex state of the organism characterized by an excitement or disturbance that predisposes to an organized response. Interpersonal functions describe the effects or impact of emotions on the relationships with others, that is, the expression of emotions inform the person himself/herself and communicate to others how we feel and the intentions that can be derived from that emotional state, therefore it facilitates the appearance of appropriate social behaviors. Emotions also serve to influence others and promote social ties and interpersonal relationships, facilitating empathy by generating positive attitudes towards oneself and others, which in turn favor interpersonal relationships.
Answer:
The correct answer is "interpersonal".
Explanation:
The missing options of this question are:
a. existential
b. intrapersonal
c. phenomenoogical
d. interpersonal
The correct answer is option d. "interpersonal".
Interpersonal, is a term used to describe the relationships that arise from the communication of two or more people. Basically, interpersonal could be defined as anything that involves the action of more than one person. This term is applied to emotions as well, where the interpersonal functions of emotions refers to the effects that one's emotions have on other people.
Unattached earlobes are a dominant trait. Finn and Maggie both have unattached earlobes but their daughter, Celia, does not. If Finn and Maggie have a second child, what is the probability that it will have attached earlobes?A. 1/4B. 1/2C. 3/4D. 1E. 1/8
Answer:
Explanation:
It is in Spanish but you put it in the translator and the calculations are international
The Glasgow Coma Scale is a common screening tool used for patients with a head injury. During the physical exam, the nurse documents that the patient is able to spontaneously open her eyes, obey verbal commands, and is oriented. The nurse records the highest score of:
Answer:
The highest score of Glasgow Coma Scale in this patient is 15.
Explanation:
The Glasgow Coma Scale (GCS) is the most common screening scale used to describe the level of consciousness in a person after a traumatic brain injury.It has three components
1. eye response
2.verbal response
3. motor response
The lowest possible GCS is 3 which represents deep coma or death in patient, while the highest is 15 which represents fully alert and oriented patient.
What are the overriding problem with both theories of muscle growth
Answer:
The overriding problem with both theories of muscle growth, hypertrophy and hyperplasia, is that: neither can be accepted as correct because muscles growth is difficult to study in humans.
Explanation:
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Describe the symmetry in members of phylum echinodermata?
Answer: Bilateral Symmetry
Explanation:
Echinoderms evolved from bilateral symmetric species.
Even though adult echinoderms have five-sided or pentaradial symmetry, echinoderm larvae are ciliated, free-swimming species that form in bilateral symmetry making them look like embryonic chordats. Example of echinodermata is starfish.
Bilateal symmetry allows them to move anywhere in the water. That when a predator is trapped by 2 arms, the other arms can be used effectively by continuously placing pressure on the body part to pressurerise the animal to open.
Hence, phylum echinodermata have bilateral symmetry.
This is a diagram that shows the gene combinations that might result from a genetic cross.
Answer: punnett square
Explanation:
Answer:
Punnet square
Explanation:
Which system protects to the cardiovascular system?
A) skeletal
B) nervous
C) circulatory
D) digestive
Answer:
A
Explanation:
Your ribs are apart of skeletal system and your ribs protect you lungs
A burner on a stove gets red
and heats up because it:
A) creates static charge
B)creates resistance
C)creates current
Answer:
The answer is B)creates resistance
Explanation:
Resistance mean a force opposing the flow of electron current in a conductor.
People suffering from cystic fibrosis have a mutant version of the gene called cystic fibrosis transmembrane conductance regulator (CFTR) that makes a non-functional or less functional membrane transport protein. Normal people also have the same gene. What is different between the two?
Explanation:
Cystic fibrosis is a genetic disease caused by a mutation in the CFTR gene. The CFTR gene is involved in the formation of certain ABC channels in the membrane which are involved in the influx and efflux of the chloride ions in the cell.
The disease is caused when both the copies of the mutated genes each from father and mother are present in the progeny that is it is caused by the recessive allele.
The person with a normal allele of CFTR genes is normal and does not develop the affected organs like the lungs, kidney, pancreas, and others but a person with the mutated genes form a thick mucus in their organs especially the lungs but also in the kidney, pancreas.
An agent used to reduce the number of bacteria on a toilet would most accurately be called a(n) An agent used to reduce the number of bacteria on a toilet would most accurately be called a(n) disinfectant. fungicide. aseptic. virucide. antiseptic.
Answer:
disinfectant
Explanation:
Disinfectant are chemical substances that are applied on non living surfaces, which are used to inactivate or kill microorganisms such as fungi and bacteria. examples of chemical disinfectants include bleach, thymol, alcohols, formaldehyde etc. Also, there are non-chemical disinfectant, such as UV light.
Disinfectant are antimicrobial in action, and can be used to reduce the number of bacteria on a toilet. It is almost similar with antiseptic, however, antiseptic are mostly applied on the body to prevent growth of microorganisms, while disinfectant are commonly applied on inert or non living surfaces, to reduce and destroy microorganisms.
Over 95% of incoming UV-B radiation is absorbed in the stratosphere.
Please select the best answer from the choices provided
True or false
Answer:
T
Explanation:
If the grasses contain 10,000 kcal, how much of that will a hawk consume?
A.10,000kcal
B.1,000kcal
C.100kcal
D.10 kcal
Answer:
10 kal
Explanation:
as energy goes through the pryamid it loses most of it energy and only ten percent of the energy will be passed on
What is the difference between a heterozygous and homozygous set of alleles?
Homozygous mean that both copies of a gene or locus match.
Heterozygous mean that both copies of a gone do not match.
A young female wears her lap belt low, over her upper thighs, because the belt is uncomfortable when worn properly. If involved in a head-on "up and over" type collision, to what injury is she most prone, given the position of her lap belt?
A) Internal abdominal injury
B) Dislocated hips
C) Tibia-fibula fractures
D) Bilateral arm fractures
Answer:
The correct answer here is B) Dislocated Hips
Explanation:
Due to the force of the of the collision which causes a forceful "up and over" pull over her body, hips is likely to get dislocated.
If worn properly, the lap belt will hold her in place preventing her upper torso which is heaver than her lower body mass (that is the hips and below) from reacting to the forceful conversion of potential energy to kinetic energy.
When her body, having used the belt erroneously, goes into a full kinetic jump, the weight of the upper torso will pull the most at the hips thus leading to the dislocation.
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Petals:
a. are present mainly to protect the stamens and carpels.
b. serve to attract insects to collect and disperse fruit.
c. serve as landing pads for pollinators.
d. serve to attract animals to collect and disperse pollen.
e. serve all of the above purposes.
Answer:
Petals d. serve to attract animals to collect and disperse pollen.
Explanation:
Petals serve to attract animals to collect and disperse pollen. This is because petals are modified leaves that surround the reproductive parts of flowers protecting them. They have super bright colors and different shapes so they attract pollinators and animals. Petals have different functions depending the type of plant repelling or attracting specific pollinators.
Nucleotides can be radiolabeled before they are incorporated into newly synthesized DNA and, therefore, can be assayed to track their incorporation. In a set of experiments, a student-faculty research team used labeled T nucleotides and introduced these into a culture of dividing human cells at specific times. Which of the following questions might be answered by using the method described?
A. When do spindle fibers attach to chromosomes?
B. How many picograms of DNA are made per cell cycle?
C. What is the length of the S phase of the cell cycle?
D. How many cells are produced by the culture per hour?
Answer:
C. What is the length of the S phase of the cell cycle?Explanation:
Such type of technique that is used to tack or identified the passage or location of the metabolic reaction, organelles and some other during the research or experiment is known as radiolabelling. During the study of the synthesis of the DNA, the nucleotides are labeled to check the S phase of the cell cycle. Since the synthesis of the DNA takes place during this phase so the time and length of the S phase can be easily obtained during the experiment. This technique is also used for different purposes during the biomolecular experiment and some other disciplines.The S phase is the DNA replication phase of the cell cycle, it is the phase
that occur between the G₁ and G₂ phases.
The question that might be answered by using the method described is; D. What is the length of the S phase of the cell cycle?Reasons:
The S phase, or synthesis phase, is the cell division phase in which the
DNA of the cells are replicated such that the number the genome is
doubled, before the cell enters into the meiosis mitosis stage.
The synthesis that takes place during the s-phase includes the synthesis of
nucleotides.
Therefore, the radiolabeled nucleotides can be incorporated in the s-phase
after the DNA is synthesized, and therefore, the length of the S-phase of
the cell cycle can be determined.
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A small hollow within the brain that is filled with cerebrospinal fluid
Answer:
Ventricles:One of the hollow spaces within the brain, filled with cerebrospinal fluid.
Explanation:
cerebrospinal fluid
A clear fluid, similar to blood plasma, that fills the ventricular system of the brain and the subarachnoid space surrounding the brain and spinal cord.
Ventricle of brain
The ventricles of the brain are a communicating network of cavities filled with cerebrospinal fluid (CSF) and located within the brain parenchyma. The ventricular system is composed of 2 lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle.
which winds are found primarily in the tropics:
Answer: Trade Winds.
Explanation:
Y e s.
Answer:
Trade Winds
Explanation:
A client has been diagnosed with right-sided heart failure based on symptomology. The cardiologist will confirm this suspicion through diagnostics. Which diagnostics are used to reveal right ventricular enlargement?A. electrocardiogramB. chest radiographC. echocardiography
Answer:
A. electrocardiogram and C. echocardiography.
Explanation:
The two diagnostics used to confirm if a person has ventricular enlargement are electrocardiogram and echocardiography. Electrocardiograms mostly detect the electrical activity of the left ventricle, and if there is a problem on the right ventricle, it might be hard to confirm it with this procedure, so the best option is to complement it with echocardiography since it gives an image of the right ventricle walls.
Answer: The correct answer to the question is option A
ELECTROCARDIOGRAM
Explanation: Right sided heart failure is otherwise known as pulmonary heart disease or cor pulmonale.
In a healthy heart,deoxygenated blood enters the right atrium through the superior and inferior vena cava,the right atrium contracts opening the tricuspid valve and making way for the blood to empty into the right ventricle.the right ventricle further contracts and the pulmonary valve opens,the deoxygenated blood from the right ventricle goes into the pulmonary trunk and into the right and left pulmonary artery,the right and left pulmonary artery empties the deoxygenated blood into the right and left lungs for gaseous exchange.(oxygenation)
When the right side of the heart is diseased,there will be a failure in carrying out the above stated functions.
Right sided heart failure is simply defined as the inability of the right side of the heart to take-up or pump deoxygenated blood into the lungs for oxygenation.
The sign and symptoms if right sided heart failure are mainly lethergy, dyspnea, fatigue and oedema.
Electrocardiogram is one of the diagnostic procedure for right sided heart failure,it will reveal an impairment in the heart rate and rythym and also an impairment in pulmonary artery pressure.
The purpose of mitosis includes all of the following, EXCEPT:
A. Repair of skin tissue damaged by a burn.
B. Formation of sperm by a frog.
C. Replacement of cells lost due to scraping a knee.
D. Lengthening the long bones of a child during a growth spurt.
The purpose of mitosis includes all of the following, EXCEPT Formation of sperm by a frog. Thus option B is correct.
What is mitosis?
In a cell cycle, Mitosis can be defined as the process in which new cell are produced from parent cell and it occur both in unicellular and multicellular organisms.
In this division, the cell where the number of chromosomes remains the same, except in the case of germ cells where half number of chromosomes are produced.
Here the nucleus of a cell is divided into two daughter nuclei having equal amount of genetic material and produce both the daughter nuclei.
The nuclear division followed by cytoplasmic division which is important for the growth of the cells and the replacement of worn-out cells.
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Mitosis is a biological process used for growth, development, and repair in organisms but it is not involved in the formation of sperm or eggs. This is accomplished by another process known as meiosis.
Explanation:The purpose of mitosis mainly involves the growth, development, and repair of an organism. Mitosis is involved in generating new cells for repair such as in skin tissue repair due to a burn (Option A) and replacement of cells due to a knee scrape (Option C). It also partakes in the growth phase, contributing to the lengthening of long bones during a growth spurt (Option D). However, mitosis is not responsible for the formation of sperm by a frog (Option B). The formation of sperm or eggs in organisms occurs through another process called meiosis, which results in four haploid cells.
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What is it called when a user begins moving toward another cell and the cellular phone automatically associates with the base station of that cell during a call? A. handoff B. roaming C. hunting D. multiplexing
Answer:
Handoff
Explanation:
Handoff sometimes referred to as handover is the process of transferring a call that is active or a data session from a cell in a cellular network to another cell in a cellular network. It occurs when the base station signal is changed as the cell is shifted and does not result to any form interaction in the data session or active call.
A data session user or active caller would experience no interruption in service when the handoff is well implemented.
A 6-week-old infant presents to your office for a check-up. The baby was born full-term by NSVD to a 29-year-old G1P0 mother with no complications. Mother states the baby was feeding well until a week ago, when he developed increased sleepiness, prolonged feeding, and greater duration between feeds. His mother notes he stops to take breaks during feeds because he seems to be trying to catch his breath. He has four to six wet diapers per day and stools three or four times per day. Vital signs: Temperature is 37.6 C (99.7F), respiratory rate is 68 breaths/minute, pulse is 138 beats/minute, blood pressure is 88/58 mmHg, and oxygen saturation is 98%. The physical examination is notable for increased respiratory effort and retractions, and, upon cardiac examination, a murmur with a hyperactive precordium and no cyanosis. Abdominal exam reveals a liver edge palpable to 4 cm below the right costal margin.
Which condition would be LEAST LIKELY to be the cause of the infant's symptoms?
A) Aortic stenosis
B) Coarctation of the aorta
C) Ventricular septal defect
D) Patent ductus arteriosus
E) Atrial septal defect
Answer:
E) Atrial septal defect
Explanation:
A 6-week-old infant presents to your office for a check-up. The baby was born full-term by NSVD to a 29-year-old G1P0 mother with no complications. Mother states the baby was feeding well until a week ago, when he developed increased sleepiness, prolonged feeding, and greater duration between feeds. His mother notes he stops to take breaks during feeds because he seems to be trying to catch his breath. He has four to six wet diapers per day and stools three or four times per day. Vital signs: Temperature is 37.6 C (99.7F), respiratory rate is 68 breaths/minute, pulse is 138 beats/minute, blood pressure is 88/58 mmHg, and oxygen saturation is 98%. The physical examination is notable for increased respiratory effort and retractions, and, upon cardiac examination, a murmur with a hyperactive precordium and no cyanosis. Abdominal exam reveals a liver edge palpable to 4 cm below the right costal margin.
Atrial septal defect do not cause CHF; an ASD malformation is a left to right shunt, and depending on the size of the defect the patient may or may not present with symptoms and ASDs often go undiagnosed for decades due to subtle physical examination findings and/or a lack of appreciable symptoms. If the defect is large enough, pediatric patients may present with easy fatigability, recurrent respiratory infections, or exertional dyspnea.
Answer:
\rE) Atrial septal defect
Explanation:
The least likely condition for the cause of these symptoms in the infant is Atrial septal defect .
An ASD malformation is a left-to-right shunt, and—depending on the size of the defect—the patient may or may not present with symptoms. ASDs often go undiagnosed for decades due to subtle physical examination findings and/or a lack of appreciable symptoms.
If the defect is large enough, pediatric patients may present with easy fatigability, recurrent respiratory infections, or exertional dyspnea.
The left side of the brain controls the left side of the body
Answer:
the answer is The right side of the cerebrum controls the left side of the body
and the left side of the cerebrum controls the right side of the body.
The left hemisphere of the brain controls the right side of the body due to the crossing over of neural connections in the brainstem. This lateralization also extends to cognitive functions such as language. The communication between both brain hemispheres for coordination of functions is facilitated by the corpus callosum.
Explanation:The statement that the left side of the brain controls the left side of the body is actually incorrect. In truth, the left hemisphere of the brain controls the right side of the body and vice versa. This is due to the crossing over of neural connections in the brainstem. This phenomenon of 'lateralization' also extends to some cognitive functions. For instance, language functions are predominantly processed in the left hemisphere — a feature seen in about 95% of the population — and are therefore predominantly controlling the right side of the body. This is achieved through connections in structures like the corticospinal tract and the ascending tracts of the spinal cord. Communication between both hemispheres of the brain is facilitated by the corpus callosum, allowing for coordination of motor and sensory functions.
It is an oversimplification and a popular myth that people are distinctly 'right-brained' or 'left-brained'. In reality, many brain functions, such as language, are distributed globally around the cerebrum.
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Primary targets for insulin action include all of the following except
Answer:
renal glucose reabsorption
Explanation:
An anatomy and physiology instructor scratches chalk across the blackboard causing a screeching sound. Several students get a feeling like their "hair is standing on end." This response is part of the sympathetic stress reaction and is called what?
Explanation:
The sympathetic nervous system directs the body's rapid involuntary response to dangerous or stressful situations
The feeling of "hair is standing on end" gives goosebumps or technically we one can say pilorection
Pilorection is defined as erection of the hair of skin due to contraction of the tiny arrectores pilorum muscles that elevate the hair follicles above the rest of the skin and move the hair vertically, so the hair seems to stand on end
If you pick up a novel object that you've never seen before and run your fingers along it to get a better sense of its shape, you are engaging in A. increased touch sensitivity. B. two-point touch. C. proprioceptive feedback.D. nociception. E. a haptic exploratory procedure.
When you run your fingers along an object to sense its shape, you are engaging in a haptic exploratory procedure. This active touch involves haptic perception, which integrates various sensory inputs and feedback mechanisms to help recognize the object's properties.
If you pick up a novel object that you've never seen before and run your fingers along it to get a better sense of its shape, you are engaging in E. a haptic exploratory procedure. Haptic perception is involved when we recognize an object by touching it. This perception is a combination of the senses in the skin, the position of the hand, and how the fingers conform to the object.
By actively moving your fingers over the object, you're using active touch, which tends to be more informative for determining an object's shape and other properties. Through touch, we can discern various characteristics such as size, weight, texture, stiffness, and so forth. This information is processed by receptors in our skin and then combined in our central nervous system to form a detailed understanding of the object.
Two-point discrimination, proprioceptive feedback, and nociception are all different aspects of the haptic system that serve their unique purposes in tactile sensation.
Overall, when you explore an object with your hands to learn about its shape and other qualities, you are primarily using haptic perception.
An ulcer is a break or discontinuity in a cutaneous or mucous membrane in the body. There are many types of ulcers. __________ is a type of ulcer in which there is an erosion of the gastrointestinal lining deep enough to penetrate the muscularis mucosa.
a.Gastroesophageal reflux disease (GERD)
b.Diverticulosis
c.A peptic ulcer
d.Gastritis
Answer: C
Explanation:
A peptic ulcer is an erosion in a segment of the gastrointestinal mucosa, typically in the stomach (gastric ulcer) or the first few centimeters of the duodenum (duodenal ulcer), that penetrates through the muscularis mucosae.
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The cells that are formed during spermatogenesis by the first meiosis are called:______.
1. spermatozoa.
2. spermatogonia.
3. primary spermatocytes.
4. secondary spermatocytes.
5. spermatids.
Answer:
Spermatogenesis
Explanation:
The first meiotic division of each main spermatocyte produces a pair of secondary spermatocytes, which carry out the second division of meiosis. Spermatids are the haploid cells that result from this process. Thus, option E is correct.
What is function of spermatids?Sertoli cell function is governed and controlled by spermatids. Sertoli cells regulate the metabolism, cell division, and development of spermatogonia or germ cells.
The haploid male gametic known as the spermatid is produced when secondary spermatocytes divide.
Each spermatid only has half as much genetic material as the original primary spermatocyte as a result of meiosis. Testicle germinal epithelium. Rat testicular tubule in transverse section.
Therefore, the cells that are formed during spermatogenesis by the first meiosis are called spermatids.
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HOMEWORK: CHARGING BY INDUCTION
1. Which of the following are examples of charging by induction? Explain how you
know (2 marks)
(a) static Cling on clothes
(b) bringing a charged rod near a neutral electroscope
(c) attracting pieces of foam with a charged comb
(d) hair standing on end after you have taken off a hat.
All of these are examples of charging by induction.
What is charging by induction?(a) Static cling on clothes is an example of charging by induction. When clothes are taken out of the dryer, they become charged due to friction. The negatively charged electrons on the clothes repel each other and accumulate on the surface of the clothes, leaving a positive charge on the other surface. This causes clothes to stick together, known as static cling.
(b) Bringing a charged rod near a neutral electroscope is an example of charging by induction. When a charged rod is brought near a neutral electroscope, it repels electrons to the opposite end of the electroscope. This causes a separation of charge and a potential difference, resulting in a net charge on the electroscope.
(c) Attracting pieces of foam with a charged comb is an example of charging by induction. When a charged comb is brought near pieces of foam, it repels electrons to the opposite end of the foam. This causes a separation of charge and a potential difference, resulting in a net charge on the foam.
(d) Hair standing on end after you have taken off a hat is an example of charging by induction. When a hat is removed from the head, the hair gets charged due to the friction between the hat and the hair. The negatively charged electrons on the hair repel each other and accumulate on the surface of the hair, leaving a positive charge on the other surface. This causes the hair to stand on end.
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