Which of the following illustrates a positive feedback mechanism?
Multiple Choice
Body temperature control.
Uterine contractions during childbirth.
Maintenance of blood pressure.
Control of blood sugar.
Answer:
(b) uterine contractions during childbirth.
Explanation:
increase in uterine contractions when uterine stretching increases during childbirth
Uterine contractions during childbirth
Explanation:
Positive feedback mechanisms amplify or reinforce changes that have occurred in the body rather than counteracting them. In the case of uterine contractions during childbirth, the initial contractions of the uterus cause the release of the hormone oxytocin, which then stimulates further contractions. This positive feedback loop continues until the baby is born.
In contrast, body temperature control, maintenance of blood pressure, and control of blood sugar are all examples of negative feedback mechanisms, which work to maintain a stable internal environment by counteracting changes that occur in the body.
*IG:whis.sama_ent
During fertilization which two cells fuse together
Answer: the sperm binds to a receptor on the surface of the egg and fuses with the egg plasma membrane
In which ways might ocean currents be like streams and rivers on land?
need answers to 9 and 10
please help!!
Three disadvantages of cloning.
Cloned animals might not live as long as animals that are not clones.Cloning is a complex and expensive process.Cloning can result in a reduction in genetic diversity, which can make a population more susceptible to diseases and environmental changes.What is the process of cloning?The process of cloning is described as follows:
A nucleus and an egg cell come from a body cell of animal A with its nucleus removed comes from animal B.
An enucleated egg cell from animal B is taken and the nucleus is removed.
The nucleus with DNA from animal A is placed in the enucleated egg cell from animal B.
The cell from animal A with its DNA develops into an embryo.
The embryo develops into a baby animal that is a clone of animal A.
Learn more about cloning at: https://brainly.com/question/7323201
#SPJ1
Figure 2.20. 2. Geyphel likes to eat biscuits for his breakfast, noodles for his lunch, and cakes for his dinner. Most of the time he plays games on his computer or his mobile phone. He hardly goes for outdoor activities. What are the diseases that you foresee in his life? 3. List some of the unhealthy habits that you see in your community. 50
Eyesight problems , increase body weight , restlessness , obesity , diabetes are some major problems that foreseen when you adopt bad habits.
Geyphel eat unhealthy food like biscuit , noodles and cakes all the time due to which he suffered from diabetes , obesity , BP problem etc because this kind of food our body cannot digest properly due to which it accumulates in the body tissue.
therefoee the child has to eat healthy food like fibrous food which prevent constipation etc
also, he used the phone and computer everyday due to which he might suffered from the eyesight problems like paining in eyes , redness in eyes etc therefore the child must go outside and play outdoor activities.
outdoor activates helps in prevention of many unhealthy bad habits.
In society some unhealthy habits are:
malnutritionsmokingdrugs abusingalcohol consumingmetabolic diseasecardiac diseasesoverall the due to the unhealthy life style the child might get affect with the many disease which effects its body as well as mind.
To know more about UNHEALTHY FOOD HABITS here
https://brainly.com/question/2495540
Ex an ice cube is placed in a sealed container and beated until it becomes steam, what will happen to the weight of the ice?
A The weight will stay the same
M
M
R
M
B
The weight will increase when it becomes a liquid and then decrease when it becomes a gas
C The weight will decrease since the liquid will take up less space.
D
The weight will increase since gases do not have mass.
Answer:
B
Explanation:
Because the ice evaporated it's weight has Evaporated also.
how does adding substances to wastewater help engineers get rid of harmful substances
Answer: When chlorine gas or tablets are added to wastewater, the chlorination kills the bacteria, and simple charcoal filters can remove some of the suspended solids, which might often be enough
Explanation:
What is this asking?
Describe a time when you’ve experienced eustress (the “good” stress) and describe a different time when you’ve experienced distress (the “bad” stress).
Eustress (the “good” stress) is experienced in limited situations such as to escape from predators, while distress (the “bad” stress) is experienced in chronic situations such as a toxic job environment.
What is stress?Stress is a natural response of the body to harmful situations, which is adaptive in evolutionary terms since it allows us to scope from bad situations but it can also be negative when we are exposed to chronic stress such as what occurs in a toxic work environment.
Therefore, with this data, we can see that stress is always good because it is adaptive.
Learn more about the meaning of stress here:
https://brainly.com/question/11819849
#SPJ1
Someone please help me, it's due today!
The possible phenotypes and genotypes are given below:
phenotype - no tongue roller, four tongue rollers
genotypes - RR, Rr, Rr, Rr
What are genotypes and phenotypes?The genetic information or the genes that are passed down through generations is referred to as the genotype, and an organism's observable qualities or characteristics are referred to as its phenotype.
The possible phenotypes and genotypes of the cross are determined as given below:
The genotype of the parents = RR and Rr
Crios = RR x Rr
The genotype of the offspring produced = RR, Rr, Rr, RR
Learn more about genotypes and phenotypes at: https://brainly.com/question/30460326
#SPJ1
3. For each environment below, describe why you think it would have a high or low
rate of speciation.
A rugged mountain terrain (1 points)
A large, open forest (1 points)
An island in the ocean (1 points)
For each environment below, describe as, Islands frequently have a low carrying capacity, which may promote competition and resource allocation among species, further accelerating speciation.
A challenging mountainous terrain : rapid speciation Due to changes in height, geology, and climate, rocky mountain terrain often consists of isolated pockets of habitat. The genetic isolation of populations can result from these isolated areas acting as obstacles to gene flow. Genetic variations can build up over time, leading to reproductive isolation and ultimately to speciation. Furthermore, the extreme conditions found in rocky mountain terrain, such as harsh climates, steep slopes, and a lack of resources, might encourage speciation by driving adaptation and specialization among species.A large, open forest : Low rate of speciation, A big, open forest usually offers continuous habitat and fewer physical obstacles to gene flow. Individuals can travel about more easily as a result, encouraging gene flow and minimising genetic isolation among communities.An island in the ocean : High speciation rate, Islands frequently exhibit isolation, which can cause population genetic diversity. Islands frequently have little gene flow with mainland populations because of their isolation, which can result in genetic isolation and the possibility of speciation. Additionally, islands often feature distinctive biological characteristics that might encourage speciation and drive adaptive evolution, such as diverse climatic patterns and resource availability.To know more about environment
https://brainly.com/question/9740398
#SPJ1
Cholesterol is a fatty substance associated with
Cholesterol is a fatty substance associated with cardiovascular diseases.
Cholesterol is a fatty molecule whose excess in the human body frequently contributes to the development of cardiovascular disorders such as atherosclerosis, heart disease, and stroke. This occurs when cholesterol builds in the walls of our arteries over time, progressively narrowing them.
As a result, blood flow to organs and tissues throughout the body is decreased. Trans fats enhance your bad cholesterol (LDL) while decreasing your good cholesterol (HDL). These modifications are linked to an increased risk of heart disease.
Cardiovascular disease (CVD) is a broad term for any condition affecting the heart or blood vessels. Blood flow to the heart, brain, and body can be diminished as a result of: A blood clot (thrombosis) is the accumulation of fatty deposits inside an artery, which causes the artery to harden and narrow.
To know more about Cardiovascular disease,
brainly.com/question/30610342
The complete question is -
Cholesterol is a fatty substance associated with which type of disease?
difference between left and right lungs
Answer:
The left and right lungs are two separate organs located in the chest cavity of the human body. While they have similar functions, there are some differences between them:
Size: The right lung is larger and has three lobes, while the left lung is smaller and has only two lobes. This is due to the position of the heart, which is located more towards the left side of the chest, leaving less space for the left lung.Shape: The left lung is more narrow and elongated than the right lung, which is shorter and broader. This is due to the position of the heart, which pushes the left lung upwards.Number of bronchi: Each lung has a bronchus, which is a tube that carries air to and from the lungs. The right lung has a larger and more vertical bronchus than the left lung, which has a smaller and more horizontal bronchus.Number of pulmonary vessels: The right lung has more pulmonary vessels than the left lung, which is due to the fact that the right side of the heart pumps blood to the lungs for oxygenation.Overall, while the left and right lungs have similar functions, their size, shape, and number of bronchi and pulmonary vessels differ, reflecting their unique positions within the chest cavity and the needs of the body.
High Metabolism VS Low Metabolism: How to fix them.
Answer:
Explanation:
Metabolism is the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available.
Having a high metabolism means your body burns energy from food at a faster rate than others your age. This means that you require more energy from food in order to grow and develop.
A person with a "low" (or slow) metabolism will expend less calories when at rest and during exercise, necessitating a reduction in caloric intake.
How to get a fast metabolism:
While metabolism is partially determined by genetics, there are several things you can do to help increase your metabolism:
Exercise regularly: Exercise helps increase muscle mass, which in turn can help increase metabolism. Aim to get at least 30 minutes of moderate to high-intensity exercise most days of the week.Eat enough protein: Protein requires more energy to digest than other nutrients, which means that it can help boost your metabolism. Aim to include a source of protein at every meal.Drink plenty of water: Drinking water can help keep your metabolism running smoothly. Aim to drink at least 8 cups of water a day.Get enough sleep: Lack of sleep can disrupt metabolism and increase the risk of weight gain. Aim to get at least 7-8 hours of sleep per night.Reduce stress: Stress can disrupt metabolism and increase the risk of weight gain. Find ways to manage stress such as through exercise, meditation, or talking to a therapist.Try strength training: Strength training can help build muscle mass, which in turn can help boost metabolism.It's important to note that while these strategies may help increase metabolism, there is no one-size-fits-all approach. Consult with a healthcare professional to determine the best course of action for your individual needs.
if a high metabolism is the case, there is nothing or barely anything to fix.
2) The allelic frequencies among a population of iguana are shown for three generations. Imagine a change in environmental conditions, from periodic flooding to consistently flooded during the time period. Using the gene pool data, what criteria support the statement in the prompt? Choose ALL that apply.
The criteria support the statement in the prompt would be B, D E
How to get the criteria support the statement in the prompt?B) Initially, there was allelic variation in the iguana population. - This is important because natural selection can only occur when there is variation among individuals in a population.
D) In three generations, the allelic frequencies in the population changed. - This is also important because natural selection involves changes in allele frequencies in a population over time.
E) Iguana that had the ww genotype were more apt to survive in the changing environment. - This statement does not support the prompt because it suggests that individual iguanas with a certain genotype are more likely to survive, which is not the same as saying that natural selection acts on populations rather than individuals.
Reasd more on allele here:https://brainly.com/question/23516288
#SPJ1
Answer:
The Correct answers are A,B,D,E
Explanation:
Trust me, I did the Usa Test prep.
How is Tommy Silverstein from the book Hothouse: Life Inside Leavenworth Prison portrayed to have social learning theory? Are there any other theories that could work for him?
In an investigation about the roles of visual and auditory cues in mate composition, researchers studied two distinct populations of flycatchers, (Monarcha Castaneiventris), a species of bird that lives in the Solomon Islands.
The researchers studied two distinct populations of flycatchers to investigate the roles of visual and auditory cues in mate composition.
The investigation aimed to study the roles of visual and auditory cues in mate composition in Monarcha Castaneiventris, a species of bird that lives in the Solomon Islands. To conduct the study, the researchers selected two distinct populations of flycatchers to compare the mate selection processes in each population. One population was likely to rely more on visual cues for mate selection, while the other population was likely to rely more on auditory cues.
By comparing the mate selection processes in these two populations, the researchers aimed to determine the relative importance of visual and auditory cues in mate composition. The study could provide insights into the evolution of mate selection processes and the factors that shape them in different populations of the same species.
To learn more about visual and auditory cues, here
https://brainly.com/question/31384721
#SPJ1
Which of the following is a positive effect that technologies like the Internet have had on workers?
Access to knowledge and information is made easier for workers because to technology like the Internet. Workers now find it simpler to conduct research, develop new skills, and keep up with industry trends because to the revolutionary changes the Internet has brought about in information access and sharing.
Because of this, it has become easier for employees to continue their professional growth and learn new things that will improve their job performance and career prospects.
The Internet has also increased chances for freelance work and flexible scheduling. Workers may now work from almost anywhere thanks to the ability to connect and interact online, which eliminates the need for commuting and gives them more flexibility in maintaining work-life balance. Due to this, employees now have greater influence over their schedules and working conditions, which has risen.
To know more about technology
https://brainly.com/question/29850930
#SPJ1
When an organism produces feces, there are at least two different ways to understand what the feces represent. One is selfish, the other is less so. Give the understanding of both of these perspectives.
From a selfish perspective, feces can be understood as waste products that an organism needs to eliminate from its body to maintain its own health and well-being. In this view, feces are simply the byproduct of an individual's biological processes, and their elimination is solely for the purpose of keeping the individual healthy and functional.
From a less selfish perspective, feces can be understood as part of a larger ecosystem of organisms and processes. In this view, feces represent a valuable resource that can be recycled and reused by other organisms in the environment. Feces are full of nutrients that can support the growth of plants and other organisms, and their decomposition plays an important role in maintaining the health and balance of ecosystems.
Overall, the less selfish perspective recognizes that all organisms are interconnected and that their actions and processes have consequences for the broader ecosystem. By understanding the value of feces and other waste products as resources rather than simply as waste, we can work to build more sustainable and resilient ecosystems.
In mice, red eyes are dominant over black eyes. Show a cross between two black-eyed mice
P:
Genotype ratio:
Phenotype ratio:
The genotype ratio of the offspring in this cross is 100% "bb". This means that all the offspring would have the same genotype as their parents, as both parents have the homozygous genotype "bb" for black eyes.
To show a cross between two black-eyed mice, we can represent their genotype as "bb" (where "b" represents the allele for black eyes). From the Punnett square, we can see that all the offspring (100%) would have the genotype "bb" and therefore have black eyes, as they have received a "b" allele from each parent.
The phenotype ratio of the offspring would also be 100% black eyes, as the "b" allele is dominant over the "r" allele for red eyes. This means that even if one parent had a "Bb" genotype for black eyes, the offspring would still have black eyes because of the dominance of the "b" allele.
To learn more about genotype follow the link:
https://brainly.com/question/29156144
#SPJ1
Which statement correctly describes the changes in the air as it moves
from Location R to Location T?
The sun heats the land faster than the ocean water, so high-density
air moves from the ocean to the land, becoming less dense.
The sun heats the land faster than the ocean water, so high-density
air moves from the land to the ocean, becoming less dense.
The sun heats the land slower than the ocean water, so high-density
air moves from the ocean to the land, becoming less dense.
The sun heats the land slower than the ocean water, so high-density
air moves from the land to the ocean, becoming less dense.
The statement that correctly describes the changes in the air as it moves from Location R to Location T is option A.
What do air consist of?Air is a gas combination that is mostly composed of nitrogen (78%) and oxygen (21%), with trace quantities of other gases for example; carbon dioxide, argon, and neon. It also has different levels of water vapor, dust, and contaminants.
Air is necessary for all living things to survive and is involved in many vital activities such as respiration, combustion, and weather patterns.
Find out more on air here: https://brainly.com/question/568323
#SPJ1
Could someone help me with this homework question please? I added pictures of it below. There’s no shading, so I’m confused. Any help appreciated. Thanks! :)
Based on Table 1, identify the properties that provide evidence that iron and rust are not the same substance
Rusting is a chemical process. Iron is an element. This provide an evidence that iron and rust are not the same substance.
Iron is rusted when rust, a compound made of iron oxides, forms upon the exterior of iron items and buildings. This rust is created by a redox reaction among both iron and oxygen in a water-containing environment (such highly humid air). Iron rusts when a coating of a red, flaking material forms on top, which is readily crumbled into powder. Rusting is a chemical process. Iron is an element.
To know more about rusting, here:
https://brainly.com/question/13026484
#SPJ1
Which car is not accelerating? A. Car C is not accelerating because it is traveling in a straight line at a constant speed. O B. Cars A and B are not accelerating because their speed is not changing. C. Car A is not accelerating because it is traveling slowly. O D. Car D is not accelerating because it is slowing down.
B. Cars A and B are not accelerating because their speed is not changing.
What is Acceleration ?Acceleration is defined as a change in an object's velocity, which includes changes in speed or changes in direction.
The formula for acceleration is given by:
Acceleration = (change in velocity) / (change in time)
The SI unit for acceleration is meters per second squared (m/s²).
Acceleration is an important concept in physics and is used to explain a wide range of phenomena, from the motion of objects in everyday life to the behavior of particles in subatomic physics.
Learn more about Acceleration here : brainly.com/question/605631
#SPJ1
How many (tatal)HIV positive cases detected in 2012?
There witnessed a rise of new cases of HIV of 2.3 million [1.9 million-2.7 million] persons globally. During 2000 and 2012, 26 countries was a 50% of higher reduction on new infections of HIV amongst young people and adults.
How many people have been diagnosed with HIV?Situation and trends worldwide: Approximately 40.1 million [33.6-48.6 million] people passed away from HIV since the epidemic's start, while 84.2 million [64.0-113.0 million] individuals got the infection. At the close of the year 2021, there were a total of 38.4 percent billion [33.9-43.8 million] HIV-positive individuals worldwide.
How many Indians have the virus?About 24 lakh people are thought to be HIV-positive (PLHIV) at any given time. The majority of PLHIV are found in southern states; the nation's top 3 are Maharashtra, the southern state of Andhra Pradesh, and Karnataka. In 2012, India's annual infection rates (ANI) were predicted to total 62,970.
To know more about infections visit:
https://brainly.com/question/29850356
#SPJ1
can someone answer this? just click on the picture and look at these two questions please
Answer: Organisms interact with other organisms for a variety of reasons, including:
To obtain food: Many organisms interact with each other to obtain food. Predators hunt and kill prey, herbivores graze on plants, and scavengers feed on the remains of dead organisms.
To reproduce: Sexual reproduction requires interaction between individuals of the same species. Pollination and fertilization are examples of interactions between plants and animals that result in reproduction.
To defend against predators: Many organisms interact with others to defend themselves against predators. Some animals form herds or groups to confuse predators, while others have developed defensive adaptations such as camouflage or poison.
To facilitate survival: Some organisms interact with others to improve their chances of survival. For example, some birds forage together, which increases their chances of finding food and reduces the risk of predation.
To obtain other resources: Organisms may interact with others to obtain resources other than food, such as water, shelter, or nesting sites.
Explanation:
Which of the following are benefits of riparian zones?
Select 2 correct answer(s)
Increase in water runoff temperature
Decrease in nutrient load added to waterway
Increase in bank erosion
Decrease in drastic water level changes from floods and storms
The benefits of riparian zones are:
1. Decrease in nutrient load added to waterway.
2. Decrease in drastic water level changes from floods and storms.
Therefore, the correct answers are:
Decrease in nutrient load added to waterway.Decrease in drastic water level changes from floods and storms.the fall season is approaching. you notice squirrels are very active in your yard. why is this so? A, they are playing games because the weather is cooler
B, they are burying a supply of nut for the winter.
C they are looking for the nut supply they buried to help them survive the fall.
D they are digging for scrubs and worms to add to their diet.
please help me
Answer: B. they are burying a supple of nut for the winter
hope this helps!
A mutation in the hemoglobin gene causes sickle-cell hemoglobin. People with sickle-cell hemoglobin are immune to malaria. If a population is exposed to malaria, how will the frequency of the mutated sickle-cell hemoglobin change?
The frequency of the mutated sickle-cell hemoglobin is likely to increase in a population that is exposed to malaria.
This is because individuals who carry one copy of the mutated gene (known as sickle cell trait) are more resistant to malaria, and are therefore more likely to survive and pass on the mutated gene to their offspring.
In areas where malaria is common, natural selection favors individuals who carry the sickle cell trait, as they have a survival advantage over individuals who do not carry the trait. As a result, the frequency of the sickle cell trait tends to be higher in these areas than in populations where malaria is rare or absent.
However, it is important to note that while the sickle cell trait provides some protection against malaria, individuals who inherit two copies of the mutated gene (one from each parent) develop sickle cell disease, which can cause a range of health problems.
Therefore, the relationship between sickle cell hemoglobin and malaria resistance is complex, and the overall impact of the mutation on population health depends on a variety of factors.
Learn more about sickle cell trait:
https://brainly.com/question/21354134
#SPJ11
Remember sexual reproduction includes the union of sperm and during fertilization. Consider the gametes produced via meiosis an image; image that they are all sperm, on the way to fertilize an egg. What is the BEST explanation as to how this enhance genetic variation.
The production of gametes via meiosis, specifically sperm in this case, plays a crucial role in enhancing genetic variation in sexually reproducing organisms.
What is the recombination?The key explanation for this is the process of recombination, also known as crossing over, that occurs during meiosis.
Recombination happens when homologous chromosomes, which are pairs of chromosomes that contain similar genes but may have different alleles (variations of a gene), exchange genetic material. This exchange occurs during the prophase I stage of meiosis, where sections of chromatids from one homologous chromosome are swapped with the corresponding sections of chromatids from the other homologous chromosome. This results in the reshuffling of genetic information between the homologous chromosomes, creating new combinations of alleles in the resulting gametes.
As the sperm cells undergo this process of recombination, they acquire a unique combination of genetic traits that are distinct from both their parental chromosomes. When a sperm fertilizes an egg during sexual reproduction, the resulting zygote inherits this newly generated combination of genetic material from both the sperm and the egg. This introduces genetic diversity into the offspring, as the recombination can produce novel combinations of alleles that were not present in either parent.
In summary, the process of meiosis, specifically recombination and independent assortment, enhances genetic variation by generating unique combinations of alleles in gametes, which are then passed on to offspring during sexual reproduction. This genetic diversity is important for the adaptability and evolution of species, as it allows for a wider range of traits and genetic characteristics to be available for natural selection to act upon.
Learn more about gametes here: https://brainly.com/question/25796791
#SPJ1
To see if baldness in men is caused by a high protein diet, a scientific researcher provides one group of 50 men a diet which includes the normal AMDR range for protein (10-35%). The researchers provide a second group of 50 men with a high protein diet, containing above 50% protein. What is the variable for which this experiment’s results will be based upon?
a.
Whether or not the men develop baldness
b.
The amount of protein in the men’s diets
c.
The age of the men and amount of water they are given to drink
d.
The number of men in each group