Which activity performed by a medical professional is primarily based on an understanding of physics?
A.
determining whether the level of hemoglobin in blood is sufficient
B.
using a blood pressure monitor to find a patient's blood pressure
C.
analyzing a patient's blood test report to determine treatment
D.
determining which tests a patient needs
E.
checking the color of a patient's eyes for suspected jaundice
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Answers
A medical expert uses a blood pressure monitor to check a patient's blood pressure, which is a task that significantly depends on their understanding of physics.
Option B is correct
Blood is used by the body for several essential functions,
such as the following:
delivering oxygen to tissues (bound to hemoglobin, which is carried in red cells)
nutrients including glucose, amino acids, and fatty acids are readily available (in the blood or bound to plasma proteins, like blood lipids)
the elimination of waste products such urea, lactic acid, and carbon dioxide
Two examples of immunological processes are the movement of white blood cells and the identification of foreign substances using antibodies.
Blood is transformed from a liquid to a semisolid gel during coagulation, a mechanism used to halt bleeding after a blood vessel ruptures.
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3. In the savannahs in Africa, elephants and giraffes both use acacia trees for foo impact would removing these large animals from the savannah most likely have on the surroundings?
A. The population of acacia trees would decrease.
B. The trees would begin to take over and there would be less grass.
C. The population of smaller animals would take over because there would be no predators.
D. The large animals in other areas would migrate to the area and eat all of the trees on the savannah.
ASAP
Answers
The trees will begin to take over which results in less grass. This is the possible outcome when the larger animals are removed. The African savanna environment is a tropical prairie with warm temperatures all year and occasional precipitation.
Grasses, small or dispersed trees, and a diverse community of organisms that interact to form a complex food web make up the savanna. The Savanna is also known as Biome and it is the largest biome present in southern Africa. It covers around 46% of the continent and is larger than South Africa by more than a third.
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This passage describes the flower position trait in pea plants:Flowers can grow in different positions on a pea plant's stem. Axial flowers arein the middle of the plant's stem. Terminal flowers are at the tip of the stem.In a group of pea plants, some individuals have axial flowers and others have terminalflowers. In this group, the gene for the flower position trait has two alleles. The allele F is foraxial flowers, and the allele f is for terminal flowers.A certain pea plant from this group has axial flowers. This plant has one allele for axialflowers and one allele for terminal flowers.Based on this information, what is this pea plant's genotype for the flower position gene?axial flowersFfffterminal flowers
Answers
Axial flowers are in the middle of the plant's stem.
Terminal flowers are at the tip of the plant's stem.
The alleles that code for the trait "position of the flower" are F: axial flowers, and, f: terminal flowers.
A pea plant has axial flowers (Phenotype of the plant)
You know that it has one allele for axial flowers, F, and one allele for terminal flowers, f.
→ The genotype of the plant is then Ff (heterozygous)
Answer:
Yes
Explanation:
What geological process could have formed the channel on Mars?Provide 3 pieces of evidence that will support your claim.
Answers
Answer: Flowing Water
Explanation: Flowing of water on the land makes channels on the planet Mars.
The flowing of water is the geologic process that could have formed the channel on Mars. According to the image we can say that flowing of water on the land made the channels on the Mars just like on the earth. When the water flows for a long time from the same area, it takes the sediments and make channels so we can say that the flowing of water makes the channels on the Mars.
Flowing water have formed the channel on Mars because the evidence card flowing water formed by water showed the channel formed by water on Earth have a curved and branching similar shape of the channel on Mars.
(a) Describe why DNA replication is said to be a semiconservative process. Explain how random mutations such as those in pathogens with a mutator phenotype may arise in the DNA of an organism.
Answers
Answer:
DNA replication is semi-conservative because each helix that is created contains one strand from the helix from which it was copied. The replication of one helix results in two daughter helices each of which contains one of the original parental helical strands.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. ... Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation.
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(a) In order to understand why the replication of DNA is said to be semi conservative, there is a need to understand what really goes on during replication.
During replication, the two strands of the DNA first become separated.Each strand then makes a complementary copy of itself.The original double strand does not reform, instead, the old strands each forms a double strand by coupling with their newly synthesized complimentary strands.The fact that the 2 double strands DNA that forms at the end of the replication process each consist of one old and one newly synthesized strand is why replication is said to be semi conservative. The old strands remain conserved but are now separated into new double strands.
(b) Random mutations such as those in pathogens with a mutator phenotype may arise in the DNA of an organism due to a host of factors:
mistakes during replicationmutation due to external factors such as chemicals, UV radiation, etc.When this happens, the DNA sequence is altered and this alteration creates one or more phenotypic effects.
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Based on the size of the swarm, we can hypothesize that the survivorship curve of these Africanized honey bees is a
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Based on the size of the swarm, we can hypothesize that the survivorship curve of these Africanized honey bees is a Type III survivorship curve.
Africanized honey bees are a hybrid species created when European honeybees and African honey bees are crossbred.
They are known for their aggressive behavior and high level of activity, which makes them one of the most effective pollinators of flowers and crops.
A Type III survivorship curve is characterized by high death rates in the early life stages and low death rates in later life stages.
This type of curve is typically associated with species that produce a large number of offspring that are exposed to high levels of predation and other environmental hazards.
Type III survivorship curves are often seen in insects such as mosquitoes and butterflies, as well as in some fish and reptiles.
The high death rate in the early stages of life is due to the fact that these organisms produce a large number of offspring to ensure that at least some of them will survive.
As the organisms mature, their survival rate improves due to their increased size and ability to avoid predators and other hazards.
In conclusion, based on the size of the swarm, we can hypothesize that the survivorship curve of these Africanized honey bees is a Type III survivorship curve, which is characterized by high death rates in the early life stages and low death rates in later life stages.
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The diagram shows a proposed process in the history of evolution. Which 4 points process is outlined in the diagram? Mitochondrion Endoplasmic reticulum Plasma membrane Nuclear Cytoplasm envelope Nucleus DNA Engulfing of aerobic heterotrophic prokaryote Heterotrophic eukaryote Prokaryote Mitochondrion Chloroplast Photosynthetic eukaryote Engulfing of photosynthetic prokaryote O Speciation due to natural selection Endosymbiosis Formation of early organic molecules Chemosynthesis
speciation due to natural selection
endosymbiosis
formation of early organic molecules
chemosynthesis
Answers
Answer:
formation of early organic molecules
Which effect does deforestation have on the carbon cycle?
Answers
Answer:
Deforestation facilitates one part of the carbon cycle, increasing the CO2 in the atmosphere. It also prevents forests from absorbing any further carbon by destroying the trees. It, therefore, inhibits this aspect of the cycle and leads to increased levels of this greenhouse gas in the atmosphere.
Explanation:
Explain the effect of a country with a transitional economy on the globalization process.
1. It furthers the presence of mixed economic systems across the world.
2. It furthers the globalization process of the global economy and accelerates global interdependence.
3. It furthers the globalization process of the global economy but decelerates global interdependence.
4. It leads to more countries with command economies and negatively impacts the transition towards globalization.
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Answers
The effect of a country with a transitional economy on the globalization process is to further the globalization process of the global economy and accelerate global interdependence.
What is transitional economy?A transitional economy denotes an economic system undergoing a metamorphosis from a centrally controlled economy to a market-oriented one. This undertaking can be arduous and intricate, demanding considerable time for the economy to complete the full transition.
Nevertheless, the advantages of embracing a market economy can be noteworthy, encompassing amplified economic expansion, enhanced effectiveness, and heightened ingenuity.
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Do you believe that we need to find alternate, environmentally friendly energy sources? Why
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Answer:
Rising consumption of fossil fuels is still set to drive up greenhouse gas emissions and global temperatures, resulting in potentially catastrophic and irreversible climate change. Alternative energy sources can help to reduce these emissions of CO2.
Which statement is true about Jupiter
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Put the steps for gene cloning in order from first to last.
Plasmid is now a combo of original DNA & new DNA - recombinant DNA
Plasmid DNA is removed from a bacterial cell & desired gene is inserted into the plasmid
Recombinant plasmid is put back in the bacterial cell & replicates, making as many copies as needed
Answers
The steps for gene cloning in order from first to last is shown below:
Plasmid DNA is removed from a bacterial cell & desired gene is inserted into the plasmidPlasmid is now a combo of original DNA & new DNA - recombinant DNA.Recombinant plasmid is put back in the bacterial cell & replicates, making as many copies as neededWhat is gene cloning?Gene cloning is described as a set of experimental methods in molecular biology that are used to assemble recombinant DNA molecules and to direct their replication within host organisms.
Gene cloning is used to create copies of a particular gene for downstream applications.
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Q.17 Which of the following cell types would you expect to be abundant with endoplasmic
reticulum and Golgi bodies?
I. Plasma B cells (produce antibodies)
II. Adipose cells (store fats)
III. Islet of Langerhans cells (secrete insulin)
IV. Red blood cells (transport oxygen)
A) I and II only
C) I and III only
B) III and IV only
D) II and III only
Answers
Answer: D.
The E. reticulum and Golgi bodies are concerned with secretion and synthesis of molecular substances e.g protein , lipids and steroid. Therefore these cellular organelles should contain Plasma B cells and Islets of Langerhans. for protein hormone synthesis(insulin) and antibodies production
Explanation:
Describe the mechanism of glycolysis in detail
Answers
The process of Glycolysis is a catabolic process in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .
Mechanism Of Glycolysis
The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol
Preparatory phase refers to the generation of two molecules of glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .
Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate .
Both the phases of glycolysis takes place in the cytoplasm and there are three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .
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How does the concentration of carbon dioxide affect the rate of photosynthesis in tomato plants?
(USE CER)
Claim, evidence, reasoning.
Answers
Answer:
Claim: The concentration of carbon dioxide affects the rate of photosynthesis in tomato plants.
Evidence: The process of photosynthesis in plants involves the conversion of carbon dioxide into organic compounds, with the help of energy from light. Thus, an increase in the concentration of carbon dioxide can potentially increase the rate of photosynthesis. Studies have shown that tomato plants exposed to higher levels of carbon dioxide exhibit increased rates of photosynthesis, resulting in greater growth and yield. On the other hand, when plants are exposed to low levels of carbon dioxide, their rate of photosynthesis decreases, which can lead to stunted growth and reduced yield.
Reasoning: The relationship between carbon dioxide concentration and photosynthesis can be explained through the process of diffusion. Carbon dioxide diffuses into the leaves of a plant through small openings called stomata. When the concentration of carbon dioxide outside the plant is higher than inside, it diffuses into the plant more quickly, which can increase the rate of photosynthesis. However, when the concentration of carbon dioxide outside the plant is lower than inside, diffusion slows down, which can decrease the rate of photosynthesis. Thus, the concentration of carbon dioxide plays a crucial role in the process of photosynthesis in tomato plants.
In conclusion, based on the evidence and reasoning presented, we can claim that the concentration of carbon dioxide affects the rate of photosynthesis in tomato plants.
The concentration of carbon dioxide affects the rate of photosynthesis in tomato plants. Higher amounts of CO2 lead to increased rates of photosynthesis until a certain point, after which the rate decreases due to stomatal closure.
Explanation:The concentration of carbon dioxide plays a vital role in the rate of photosynthesis in tomato plants. High concentration of carbon dioxide increases the rate of photosynthesis up to a certain point beyond which the rate declines.
Claim: Higher carbon dioxide concentration increases the rate of photosynthesis in tomato plants. Evidence: In several scientific experiments, tomato plants exposed to higher levels of carbon dioxide showed an increase in the rate of photosynthesis, which resulted in more biomass formation. However, if the concentration becomes too high, the rate of photosynthesis begins to decrease. Reasoning: In photosynthesis, carbon dioxide is used to produce glucose, which is used as a form of energy. When more carbon dioxide is available, the plants can carry out photosynthesis quicker, hence, the rate increases. However, too much CO2 can result in stomatal closure, reducing the intake of CO2, and slowing down photosynthesis.
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2.2.1 2.2.2 State TWO possible advantages of using bananas as a vaccine against diseases. Give TWO reasons why people might be against the use of genetically modified bananas.
Answers
Advantages of using bananas as a vaccine against diseases: Oral Delivery, Cost-Effective Production.
Reasons why people might be against the use of genetically modified bananas: Safety Concerns, Moral Considerations.
1. Oral Delivery: Bananas can be consumed orally, making them an ideal vehicle for delivering vaccines. This eliminates the need for injections, which can be uncomfortable and require medical professionals to administer.
2. Cost-Effective Production: Bananas are relatively inexpensive to produce and are widely available in many parts of the world.
This makes them a cost-effective option for vaccine production and distribution, particularly in resource-limited settings.
Reasons against the use of genetically modified bananas as vaccines:
1. Safety Concerns: Some individuals may have concerns about the safety of genetically modified organisms (GMOs), including genetically modified bananas.
There may be uncertainties about the long-term effects of consuming GMOs, and fears of potential risks to human health and the environment.
2. Ethical and Moral Considerations: Opposition to genetically modified bananas may stem from ethical and moral concerns regarding the alteration of natural organisms.
Some people may view genetic modification as interfering with nature or raising questions about the boundaries of manipulating living organisms.
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1. Angelman syndrome and Prader-Willi syndrome are used as examples of epigenetic inheritance.
a. Explain the symptoms and effects of each of these diseases.
Answers
Angelman syndrome is characterized by intellectual disability, severe speech impairment, ataxia, seizures, and a happy demeanor. Prader-Willi syndrome involves hypotonia, hyperphagia, obesity, intellectual disability, behavioral problems, and short stature.
Angelman syndrome and Prader-Willi syndrome are two distinct genetic disorders that are often discussed in the context of epigenetic inheritance. Both conditions result from abnormalities in a specific region of chromosome 15, but they have opposite effects due to differential genetic imprinting.
Angelman syndrome is characterized by developmental delays, severe intellectual disabilities, speech impairments, and motor coordination problems.
Individuals with Angelman syndrome often exhibit a happy and excitable demeanor, with frequent episodes of laughter and a fascination with water. They may also experience sleep disturbances, seizures, and a lack of speech development.
On the other hand, Prader-Willi syndrome manifests with distinct symptoms such as hypotonia (poor muscle tone) during infancy, hyperphagia (insatiable appetite) leading to obesity, developmental delays, learning difficulties, and behavioral challenges.
Individuals with Prader-Willi syndrome often have a compulsive need for food and struggle with weight management. They may also experience hormonal imbalances, growth hormone deficiency, and behavioral issues such as temper tantrums and obsessive-compulsive behaviors.
Epigenetic inheritance refers to the transmission of information from one generation to another that affects gene expression without altering the underlying DNA sequence.
In the case of Angelman and Prader-Willi syndromes, these conditions result from epigenetic changes, specifically imprinting, in the chromosomal region involved. Imprinting refers to the process by which certain genes are marked or silenced based on their parental origin.
In Angelman syndrome, the paternal copy of the UBE3A gene is deleted or silenced, leading to a lack of functional UBE3A protein in the brain. In Prader-Willi syndrome, the maternal copy of the same gene is affected. These imprinted genes play critical roles in brain development and function, leading to the distinct symptoms observed in each disorder.
It is important to note that while both Angelman and Prader-Willi syndromes are considered examples of epigenetic inheritance, the underlying mechanisms and specific epigenetic changes involved are complex and continue to be studied.
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Jessica made a list describe Earth’s hydrosphere.
1. Forms a thin layer
2.Covers majority of lithosphere
3.Composed primarily of rock
4. Interacts with the atmosphere
5. Is brittle and rigid
Which items from Jessica’s list are incorrect?
A. 1 and 5
B. 2 and 3
C. 2 and 4
D. 3 and 5
Answers
Are plants conscious? Explain
Answers
Plants have frightened systems that may communicate significantly with out a thoughts or a brain. however what those structures speak is not evidence of consciousness, because the time period is normally understood.
Mountains of research have showed that vegetation have intelligence or even beyond that focus by using a number of the same measures as we do. not handiest do they experience ache, however vegetation additionally understand and interact with their surroundings in state-of-the-art ways.
Both animals and plants are conscious, and given the relation between focus and awareness, flowers may be described as aware organisms. The mechanisms involved but are very extraordinary. attention focuses on behaviour and its diploma of complexity rather than arguments approximately the anxious structures and brains.
Conscious creatures may also include our primate cousins, cetaceans and corvids – and potentially many invertebrates, which includes bees, spiders and cephalopods which include octopuses, cuttlefish and squid. The assignment, of path, is to apprehend how the inner lives of these creatures vary from our own.
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what do people need to survive under normal conditions?
Answers
Which sequence best describes an interaction between the integumentary and excretory systems that helps maintain homeostasis?
A. Heart rate increases -> Blood vessels constrict -> Blood pressure increases
B. Blood vessel is damaged -> Platelets begin to clump -> Blood vessel ruptures
C. Blood sugar levels rise -> Pancreas secretes insulin -> Blood sugar continues to rise
D. Body temperature increases -> Glands release sweat -> Body temperature decreases
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Fill in the blank: Decomposers break down the _______________ in dead organisms and release ___________________ into the atmosphere.
Answers
Answer:
Decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere
When it is very very cold, there is MORE precipitation true or false
Answers
Answer:
true. there is more precipitation when it is very very cold.
Explanation:
Which step in the scientific method is next after making a prediction? A. Stating the question B. Conducting an experiment C. Forming a hypothesis D. Analyzing data
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Answer: analyze
Explanation:
On the pH scale, a 7 indicates _____. neutrality an acid a base
Answers
Answer:
a 7 indicates neutrality
less than 7 is an acid
more than 7 is an alkaline, or a base
Explanation:
your pH scale ranges from 0-14
7 is neutral
less than 7 is an acid
more than 7 is an alkaline, or a base
Answer:
Neutrality
Explanation:
Seeds are reproductive or not ?
Answers
Answer: Yes
Explanation: Monocots produce one cotyledon, while dicots produce two. Because seeds are reproductive structures and thus important to a species' survival, plants have evolved many mechanisms to ensure their survival. One such mechanism is seed dormancy. Dormancy comes in two forms: seed coat dormancy and embryo dormancy
Answer:Plants that reproduce by seeds. Seed plants have special structures on them where male and female cells join together through a process called fertilisation. After fertilisation, a tiny plant called an embryo is formed inside a seed.
HELP HELP HELP ASAP ILL GIVE 100 points
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Answer:
What's the question you need help with?? I will try my best to help. I'm not taking free points btw. I'm just wondering on what your question is
Mrs. Ever hart developed the theory that all bulldogs are great pets . After all her bulldog Meatball is a wonderful dog .... do that sound like a statement or scientific theory .?
Answers
Question 2 of 10
Which best describes the ecosystems on Earth?
A. There are very few types of ecosystems on Earth.
B. Earth has mostly rain forest ecosystems.
C. Ecosystems do not interact with each other.
O D. Separate ecosystems can affect each other.
Answers
Answer:
D. Separate ecosystems can affect each other.
I think the Answer is C.
Explanation:
The answer is C because if you think about it a desert does not affect the rainforest, or vise versa.
As part of a class project, Claire needs to draw a food chain of the animals she sees in a zoo. Where in the food chain should she place rabbits?
Answers
Answer: She should place rabbits as a primary consumer in the food chain.
Explanation: Rabbits are herbivores (an animal that only feeds on plants). Therefore rabbits are primary consumers.
Explain the reason the Type AB and Type O blood phenotypes always have the same
genotype, whereas the Type A and Type B blood phenotypes have two possible allelic
combinations.
Answers
Answer:
Because A is co-dominant to B and O is recessive, so the genotype is the same as the phenotype. But A can have 2 genotypes because A can mask a recessive allele, which makes the phenotype A. B can also mask a recessive allele, which makes the phenotype B.
Examples
AO (genotype) = A (phenotype)
BO (genotype) = B (phenotype)