Answer:
Explanation:
roundworms have a body cavity with internal organs.
A roundworm has a complete digestive system, which includes both a mouth and an anus.
which type of reproduction produces offspring with more genetic variation?
Answer: Sexual reproduction!
Explanation: hope i helped! <3
Answer:
Sexual repduction provides genetic diversity
EXPLANATION:
because the sperm and egg that are produced contain different combination of than the parant organisation.
what is the relationship between tissues, organs, and organ system?
Answer:
.
Explanation:
Cells make up tissues, tissues make up organs, and organs make up organ systems.
What happens physically when someone is born a male but produces female hormones
If a mammal animal is born as a male but produces female hormones then it will generate morphological traits as a female, thereby affecting whole developmental patterns.
What are female hormones?Female hormones can be defined as the chemical messengers that specify the development of female structures and secondary sex characteristics.
The main female hormones include estrogen and progesterone, while the main male hormone is testosterone.
In conclusion, if a mammal animal is born as a male but produces female hormones then it will generate morphological traits as a female associated with these hormones, thereby affecting whole developmental patterns.
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What does Primary challenges mean for school?
ou are given a sample of unknown human cells to examine. analysis of their nuclei reveals that each cell contains 23 chromosomes. what types of cells might these be?
The human cells that contain 23 chromosomes might be gametes. Gametes are reproductive cells, and humans have two types of gametes: sperm and ova (eggs).
Human cells are eukaryotic cells, and they contain a nucleus. The nucleus is a prominent organelle that contains most of the cell's genetic material in the form of DNA. Chromosomes are tightly packed DNA molecules, and humans have 46 chromosomes (23 pairs) in most of their cells.However, gametes contain only 23 chromosomes, which is half the number of chromosomes present in somatic cells (body cells). When a sperm and an egg combine during fertilization, the resulting zygote has a total of 46 chromosomes, with 23 coming from each parent.Therefore, the human cells that contain 23 chromosomes might be gametes. Somatic cells have 46 chromosomes, while gametes have 23 chromosomes.Learn more about gametes: https://brainly.com/question/7648924
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In diffusion, molecules of a substance move from areas of ______ concentration to an area of _______ concentration. Plz help and I need an answer very soon
THANKS YALL
Answer: smaller / higher
Explanation:
when a male horse is bred with a female donkey, the offspring is called what?
Competition occurs when more than one organism is trying to use the same resource.True or false?
Answer:
true
Explanation:
animal specialized eyes are examples
Answer:
Eagles- All birds of prey have excellent long-distance vision, but eagles stand out
Owls- These nighttime predators take the torch from eagles as soon as the sun goes down.
Also, Mantis Shrimp and Sheep and Goat
Explanation:
list out the five micro organisum based on their classification
Answer:
Viruses, Bacteria, Fungi, Archaea, Protists
Explanation:
Read the following and then answer the questions: Jimena was quietly enjoying her lunch when an unexpected knock on the door startled her. She found two people in suits standing on her front porch. They explained they were medical scientists from Columbia University in New York, and they were visiting her to talk about some old blood samples from a transfusion she had back in the 1970s. They showed Jimena a consent form that she had signed. It had allowed scientists to store and study her blood to help advance their medical knowledge. Now she was worried. Did she have some terrible disease? She invited them in and sat down in case the news was bad. The researchers explained that they were part of a team that searches for viruses in old blood transfusion samples. Their work was aimed at finding new transfusion-transmissible viruses that ought to be screened for in the donated blood supply to further protect patients. They were looking at samples from the 1970s because, unlike today, the only virus screened for back then was Hepatitis B. These lightly screened samples might lead to discovery of previously unrecognized viruses. Sadly, lack of broader screening for bloodborne viruses meant that thousands of people were infected with Hepatitis C and human immunodeficiency virus (HIV) by way of contaminated blood transfusions during the 1970s and 1980s. People with hemophilia, a blood-clotting disorder, had an unusually high prevalence of Hepatitis C virus and HIV. This is because managing hemophilia in the 1970s and 1980s often involved administering clotting factors derived from human blood. Before the stricter screening went into effect, at least 6,000 hemophiliacs in the United States are believed to have contracted Hepatitis C from blood transfusions. Of course, hemophiliacs were not the only ones who suffered: Anyone who got a transfusion for any reason at that time was at high risk for exposure to these viruses. In 1976, during her last trimester of pregnancy, Jimena had developed severe anemia. She remembered receiving a blood transfusion a few weeks before she delivered her son, Jose. The transfusion was done to ensure that her blood levels could support both her and her child during delivery. She knew this must have been the reason the doctors were visiting her now. She asked them if they were here to tell her she had HIV or hepatitis––she had been feeling very tired lately, and wondered if this was the cause. The doctors hastened to explain that the blood she received was not infected with Hepatitis C or HIV. But they had found something else: a new virus never seen before in humans. They examined the medical records of all the people who had received blood with this virus, and it did not seem to cause disease. However, they wanted to investigate more. They were here to get a more detailed medical history from Jimena, along with a new blood sample. They also wanted to reach out to Jose, Jimena’s son, and see if he’d be willing to take part in the study, too. Jimena’s eyes became moist as she explained that Jose had died of cancer eight years ago. The doctors expressed their sympathy, but pressed Jimena for the type of cancer he had developed. She said it was liver cancer. "Are you sure we didn’t catch hepatitis C from the transfusion?" she asked the researchers. "I know that can cause liver cancer, right?" "Yes, it can," they replied.
1. How could old samples of donate blood be screened to search for new viruses?
3. How could researchers isolate and grow a particular virus from the Jimenas blood?
The researchers could isolate and grow a particular virus from Jimena's blood through the following procedure: The process of isolating and growing a particular virus from Jimena's blood is called virus cultivation.
Researchers begin by collecting a blood sample and treating it with a substance that ruptures the host cells while leaving the viral particles intact. After that, they transfer the suspension to a suitable host cell and incubate it. The host cell is used to propagate the virus. If the virus reproduces, it is allowed to infect the host cells. Then the infected cells are checked regularly to see how the virus is doing in the host cell. This enables the researchers to research the virus and take measures to protect people from being infected by it.
Researchers can isolate and grow a particular virus from Jimena's blood by following several steps. First, they would collect a blood sample from Jimena. Next, they would separate the blood components, such as plasma and red and white blood cells, to identify the presence of the virus. Once they have located the virus, they would extract it from the blood sample.
To grow the virus, researchers would then introduce it into a suitable cell culture or host organism, which provides the necessary environment for the virus to reproduce. They would monitor the growth of the virus and collect new viral particles as they are produced. Throughout this process, researchers would ensure the cell culture or host organism is kept under controlled conditions, such as temperature and humidity, to optimize viral replication.
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The body uses hormones to maintain homeostatic levels of many nutrients, as these substances are ____________ in the blood as time passes with no addition food intake.
The body uses hormones which maintain the homeostatic levels of the many nutrients, as these substances are post absorptive in the blood as time passes with there no addition of food intake
In the post absorptive the state, the liver was produces the glucose to maintain the blood-glucose in the concentrations through the degradation of the glycogen (glycogenolysis) and the synthesis of the glucose (gluconeogenesis) from the lactate, the pyruvate, the glucogenic amino acids (principally alanine), and the glycerol.
The post-absorptive state which occurs around three to five hours and after the meal that has been completely digested and be absorbed
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will the seasonal consequences of tides, such as flooding, occur in the same season all around the globe?
Help
Answer:
Flooding is common throughout many areas within the United States and can be prevalent during particular times of the year in the particular areas. Though there is no specific flood season, most flooding occurs in the U.S. from spring to fall. Flooding is also more likely to occur in areas which have seasonal rainstorms, flood-prevalent topography like desert topsoil or a location along the coast.
FILL IN THE BLANK. the _____ asserts that aging results when dna molecules are used up in cells, so that the cells gradually die.
The "DNA damage theory of aging" asserts that aging results when DNA molecules are used up in cells, leading to the gradual death of cells.
According to this theory, over time, the DNA molecules in cells accumulate damage due to various factors such as environmental exposures, oxidative stress, replication errors, and other cellular processes. This accumulated DNA damage can lead to mutations, breaks, or alterations in the DNA structure.
As DNA is essential for proper cellular function and replication, the accumulation of DNA damage can impair the ability of cells to function effectively and replicate accurately. This can result in cellular dysfunction, loss of cellular viability, and ultimately contribute to the aging process.
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which valve is most commonly affected by rheumatic heart disease
Answer:
The mitral valve is the most commonly affected valve in rheumatic heart disease. It is located between the left atrium and the left ventricle. The mitral valve has two leaflets, which open and close to allow blood to flow from the left atrium to the left ventricle. Rheumatic heart disease can cause the mitral valve to become scarred and thickened, which can make it difficult for the valve to open and close properly.
"The valve most commonly affected by rheumatic heart disease is the mitral valve."Rheumatic heart disease is a condition in which the heart valves are damaged by rheumatic fever, an inflammatory disease caused by streptococcal bacteria. The mitral valve is particularly susceptible to damage due to its location and function in the heart, leading to conditions such as mitral stenosis or mitral regurgitation.
When a person develops rheumatic fever, the body's immune system mistakenly attacks its own tissues, including the heart, joints, skin, and central nervous system. If the heart is affected, it can lead to the development of rheumatic heart disease.
RHD primarily affects the heart valves, particularly the mitral valve, which separates the left atrium and left ventricle of the heart. Over time, the inflammation caused by rheumatic fever can cause scarring and damage to the heart valves, leading to their dysfunction. The valves may become thickened, stiff, or leaky, impairing the heart's ability to pump blood efficiently.
Symptoms of rheumatic heart disease can vary depending on the severity of the valve damage. Common symptoms may include:
1. Breathlessness or shortness of breath, especially during physical activity.
2. Fatigue or weakness.
3. Swelling of the ankles, feet, or abdomen.
4. Chest pain or discomfort.
5. Heart palpitations or irregular heartbeats.
6. Fainting episodes or dizziness.
If you suspect you have rheumatic heart disease or are experiencing any symptoms, it is essential to seek medical attention for diagnosis and appropriate treatment. Diagnosis is typically based on a combination of medical history, physical examination, imaging tests (such as echocardiography), and blood tests.
The treatment of rheumatic heart disease aims to manage symptoms, prevent further damage to the heart valves, and reduce the risk of complications. It usually involves a combination of medications, such as antibiotics to treat and prevent recurrent streptococcal infections, anti-inflammatory drugs to reduce inflammation, and medications to manage symptoms and improve heart function.
In severe cases, when the heart valves are severely damaged and affecting heart function, surgical intervention may be necessary. This can involve valve repair or replacement, depending on the individual's condition.
Preventing rheumatic heart disease primarily involves early diagnosis and prompt treatment of streptococcal infections, especially strep throat, to prevent the development of rheumatic fever. Antibiotic treatment of strep throat is crucial to reduce the risk of complications.
Furthermore, individuals who have had rheumatic fever are often given long-term antibiotic prophylaxis to prevent recurrent infections and the progression of rheumatic heart disease.
Rheumatic heart disease used to be a prevalent condition worldwide, improvements in healthcare and access to antibiotics have led to a significant reduction in its occurrence in many developed countries. However, it remains a significant health concern in some regions with limited resources and poor access to healthcare.
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help pls
A possible effect of water pollution is
A. intact food chains
B. clearer water
C. bioaccumulation of pollutants
D. more favorable temperatures
C. BIOACCUMULATION OF POLLUTANTSMAKE ME BRAINLIEST, FOLLOW AND HEART
A landfill built on wetlands is an example of sustainable and environmental friendly waste disposal . True Or False
Answer:
FALSEExplanation:
Landfills don't just releases gases, either; they release liquids. The most potent of these, perhaps, which can contaminate underground water sources. ... In short, they are not a sustainable form of waste management, as future generations will have to address the landfill problem that we are creating today.
FALSE, it is not a sustainable and environmental friendly way to dispose waste.
Landfills are sites mainly reserved for dumping of refuse and wastes materials from household and industries. They are usually designed and run under strict regulations to reduce the effect it has on the environment.
Landfills built on wetlands can be very harmful. It may turn out to be a site that becomes appalling. The following problems emanate from landfills that are built on wetlands overtime:
Contamination of underground waterProduction of greenhouse gases that causes global warmingToxin productionOozing of nauseous odors from breakdown of organic materials by bacteria, among others.In summary, building a landfill on wetlands would require a lot of technicalities and resources to ensure most negative effects are mitigated and the environment protected.
Therefore, a landfill built on wetlands is not a sustainable way to dispose waste neither is it environmental friendly.
The answer definitely is FALSE.
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what is the difference between spinal and cranial nerves???
If glucose and lactose are both abundant, would it be beneficial for e. Coli cells to express the genes that metabolize lactose? why or why not?.
No, if glucose and lactose are both abundant, it would not be beneficial for E. Coli cells express the genes that metabolize lactose because lactose is broken down into glucose.
Bacteria must first break down lactose into glucose and galactose before using glucose as an energy source. Since the first step uses energy, the overall energy gain is lower. On the other hand, if glucose is readily available, bacteria can consume it without having to expend any energy.
Therefore, the bacteria prefer to utilize glucose rather than lactose if it is directly available. Equal amounts of glucose and lactose will result in the bacteria using glucose first. They will switch to utilizing lactose once the glucose runs out.
Lactose is a disaccharide, a molecule composed of two simple sugars, a form of carbohydrate. Galactose and glucose are the two simple sugars that make up lactose.
The presence of lactose and the absence of glucose are two requirements for activating the lac operon. The repressor protein can be eliminated by lactose (through isolactose) in the environment. The catabolite activator protein, however, which is activated by 5'3' cyclic AMP, is then required.
Cyclic AMP alerts a highly diverse range of organisms to low glucose. In human cells, it serves as a low glucose signal. Additionally, it indicates famine in slime molds, which causes hundreds of individual amoebae to group together as slugs. Additionally, it triggers the CAP in bacteria, enabling the metabolism of carbohydrates other than glucose.
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If motion is represented by an arrow, what does the head of the arrow show?
A. speed
B. position
C. distance
D. direction
Answer:
D
Explanation:
Direction................
Karika papaya meaning
Answer:
tropical American shrub or small tree having huge deeply palmately cleft leaves and large oblong yellow fruit
Explanation:
Answer
Tropical American shrub or small tree with large oblong yellow fruit
Explanation:
What is Important about the soil pH?
Answer:
Soil pH affects the amount of nutrients and chemicals that are soluble in soil water, and therefore the amount of nutrients available to plants. Some nutrients are more available under acid conditions while others are more available under alkaline conditions.
Which of the following is not a role of DNA?
A. Transmitting Information
B. Storing Information
C. Copying Information
D. Creating information
Creating information is not a role of DNA.
What are the functions of DNA?DNA or the deoxyribonucleic acid is the genetic material present within the humans and almost all the species living. DNA does the function of storing information as genetic information within an organism is stored within the molecules of DNA.
At the time of cell division, all of the information within a cell needs to be copied perfectly. Therefore, DNA is the molecule, which can be replicated to produce almost the perfect copies of itself. The transmission of genetic information to the next generation is done with the help of DNA in the form of a sequence of nucleotides.
DNA performs all the above mentioned functions, however, it does not play any role in creating information.
Thus, the correct answer is option D, that is, creating information.
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sickle cell anemia is a recessive disorder. if a man who is a carrier for sickle cell anemia has a child with a woman who is normal, what is the probability the child will have sickle cell anemia?
If a man who is a carrier for sickle cell anemia, the probability the child will have sickle cell anaemia will be zero.
Blood disorders like Sickle Cell Disease are typically hereditary. Because the father can pass on either his normal or his mutated gene to his offspring, and the mother can only pass on her normal gene, if a man who is a carrier for sickle cell anaemia (genotype Ss) has a child with a woman who is normal (genotype ss), their offspring could have either the genotype Ss (carrier) or ss (normal) with equal probability.
Since both parents would need to contribute a defective gene for the kid to have the condition, the likelihood that the infant will have sickle cell anaemia (genotype SS) would thus be zero. Given that there is a 50% chance that the child will receive the mutant gene from the father, the likelihood that the infant will have the sickle cell gene (genotype Ss) is half, or 50%.
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One of the largest and oldest organisms on earth is located in fish lake and nation, forest, in utah.pando is an 80,000 year old grove of aspen trees that cover 100 acres. Although it looks like a forest, DNA analysis of several of the trees has confirmed it is really just one huge organism. Therefore the trees must have been reproduced
Pando aspen grove in Utah is an immense, genetically identical organism consisting of interconnected aspen trees spanning 100 acres and estimated to be around 80,000 years old.
One of the largest and oldest organisms on Earth, known as Pando, is located in Fish Lake National Forest in Utah. Pando aspen grove is an 80,000-year-old grove of aspen trees that covers approximately 100 acres. While it appears to be a forest, DNA analysis of several of the trees has revealed that they are genetically identical, confirming that Pando is actually one immense organism. The trees of Pando have been reproduced through a process called vegetative reproduction, where new shoots and stems emerge from the existing root system. This unique reproductive strategy has allowed Pando to persist and expand over thousands of years, making it a remarkable example of the interconnectedness and longevity of living organisms.For more questions on Pando aspen grove:
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in which of the following ways does the body absorb alcohol? multiple select question. most of the ingested alcohol is absorbed into the small intestine. the more food in the stomach, the faster the alcohol absorption process. about 20% is absorbed in the stomach about 75% is absorbed into the liver.
The body absorbs alcohol in the following ways:
Most of the ingested alcohol is absorbed into the small intestine.About 20% is absorbed in the stomach.About 75% is absorbed into the liver.Alcohol absorption is a metabolic procedure that occurs after drinking alcoholic beverages. The stomach, small intestine, and liver are the three main organs involved in alcohol absorption.
The quantity of alcohol consumed, gender, body weight, and tolerance level are among the factors that influence alcohol absorption rates. How alcohol is absorbed by the body depends on several factors, including the quantity of food in the stomach, the amount of alcohol ingested, and how quickly the body metabolizes alcohol.
The majority of ingested alcohol is absorbed through the walls of the stomach and small intestine, with the majority of it going through the small intestine.
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Where were all microorganisms originally classified?
Select from the following list of statements all of the ways in which meiosis II differs from meiosis I. Check All That Apply Interkinesis doesn't involve the replication of chromosomes, whereas interphase does. Interkinesis doesn't involve the replication of chromosomes, whereas interphase does. Crossing-over doesn't occur in prophase II, whereas it does in prophase I. Crossing-over doesn't occur in prophase II, whereas it does in prophase I. Cells in meiosis II are haploid and cells in meiosis I are diploid. Cells in meiosis II are haploid and cells in meiosis I are diploid. Sister chromatids separate in anaphase II, whereas homologous chromosomes separate in anaphase I.
Answer:it’s all of them I just did that question and got it right
Explanation:
What do the black bars represent in this spectrum?
cosmic background radiation interfering with those wavelengths
errors in collecting color spectrum of the star
wavelengths of light that are absorbed in the star's atmosphere
wavelengths of light that are invisible to the human eye
Answer:
cosmic background radiation
Explanation:
hope this helps!!
summarize the efforts that people are making to combat invasive species 
The combat against invasive species would maintain the integrity of the habitat.
What is an invasive specie?An invasive specie is an introduced, nonnative organism that spreads or widens its range away from the location of its introduction and has the potential to affect the environment, the economy, or human health is referred to as an invasive species.
Combat of invasive species focused on preventing the introduction and establishment of invasive species in new ecosystems, prevention efforts frequently entail stringent controls on the importation of plants and animals, early detection technologies, and public awareness campaigns.
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