What is the term for acquiring an infection through mucosal tissues?
Imagine that a probe sent to mars brings back a sample that contains a very primitive life-form, which appears similar to bacteria. scientists are able to revive it and begin to grow it in culture. much to their amazement, they discover that the organism has dna and that the dna encodes proteins. however, the dna of these martian microbes contains only two nucleotides. if the martian microbe uses triplet codons, what is the maximum number of different amino acids that it can have in its proteins
The formula for the maximum number of different amino acids can be calculated using the equation:
Maximum number of different amino acids = [(Number of nucleotides) ^ (Number of codons)] - 1
Where it is given that:
Number of nucleotides = 2
Number of codons = triplet = 3
The -1 in the equation implies that at least one of the codons must be a stop.
Therefore substituting to the equation:
Maximum number of different amino acids = (2 ^ 3) – 1
Maximum number of different amino acids = 8 – 1
Maximum number of different amino acids = 7 (ANSWER)
Which answer correctly compares the Krebs cycle and the electron transport chain?
Answer:
choices
Explanation:
A: Both are aerobic and focus on breaking down organic molecules.
B: Both occur in the mitochondria and result in producing more ATP.
C: Both are anaerobic and occur inside the mitochondria.
D; Both occur in the cytoplasm and result in producing more ATP.
answer: D
What effect does a small number of wild dogs have on rabbit?
Final answer:
A small number of wild dogs would likely lead to an increase in the rabbit population due to reduced predation. Rabbit coloration is also influenced by natural selection, affecting survival based on environmental factors, such as snow for camouflage. Rabbit population dynamics are complex and also influenced by reproductive strategies and ecological balance.
Explanation:
The effect of a small number of wild dogs on rabbit populations is an example of predator-prey dynamics in an ecosystem. Wild dogs act as predators to rabbits, causing a direct impact on rabbit numbers. A smaller population of wild dogs might lead to an increase in the rabbit population, as fewer rabbits would fall prey to these predators. However, this effect can vary based on the presence of other predators, availability of food, and the habitat's carrying capacity for rabbits.
Changes in rabbit populations can also be driven by other environmental factors and adaptive traits. For example, rabbit coloration is an important factor for survival, as stated in the learning materials that white fur is advantageous for rabbits in snowy environments, in which it acts as camouflage against predators like foxes. On the other hand, darker fur makes rabbits more visible and increases predation risk. Therefore, natural selection can lead to changes in fur color frequency based on the environment.
Furthermore, the reproductive strategies of animals, such as the lack of parental care in species with high offspring numbers, as mentioned in example c, can also influence population dynamics and the ecological balance. In the case of rabbits, which typically have a high reproductive rate, even a small number of predators like wild dogs can have a significant effect by consuming a large number of juveniles, hence influencing the overall population stability.
Why is it often difficult to distinguish between the functions of the nervous and endocrine systems?
When egg whites are whipped they stiffen into a meringue. the change that occurs in the protein is called?
What are the van der walls forces
Final answer:
Van der Waals forces are intermolecular attractions that include dipole-dipole interactions and London dispersion forces, influencing the behavior of molecules in various states of matter.
Explanation:
Van der Waals forces are a type of intermolecular force that include dipole-dipole interactions and London dispersion forces. Dipole-dipole forces occur between polar molecules with permanent dipoles, whereas London dispersion forces arise from temporary dipoles caused by the movement of electrons within atoms or nonpolar molecules. Dispersion forces are present in all matter, and though they are the weakest type of van der Waals force, they can still significantly influence the physical properties of substances.
Why should the lateral sides of the infant's heel be used for capillary puncture?
What causes sweating during running in order to maintain homeostasis? Jenny is running for more than an hour on a pleasant sunny morning. Her body is sweating to maintain homeostasis, which is caused by the action of a/an (blank)
Increased body temperature did this on plato
Answer:
The correct answer would be "increased body temperature".
The homeostasis refers to the ability of the body to maintain a stable internal environment irrespective of the change in the external environment.
For example, running causes an increase in body temperature as heat or energy, carbon dioxide, and water are produced by cellular respiration. This increase in body temperature activates the sweating of the body.
The sweating with the help of evaporation reduces the elevated body temperature to the normal range.
Thus, homeostasis of body temperature is maintained.
The most important characteristic that a drug must have to freely pass from the gastrointestinal tract into the circulation is to be
There are two answers – in salt form and fat soluble, depending on which way you look at it. According to Penn Foster's "How Drugs Work”, "No matter what form of the drug is swallowed, the drug must go into the free solution in the stomach or small intestine to pass from the GI tract into circulation. One factor that allows many drugs to go into free solution in the GI tract is that the drug is in a salt form within the commercial preparation. Salts of drugs dissolve readily in stomach liquid."
Also quoted from "How Drugs Work", "The portal
blood supply is joined to the small intestine by capillaries connecting to the
gastrointestinal mucosal cells. In some cases, it isn’t easy to get through
these mucosal cells because there’s a selective process that attempts to allow
only important substances through. In the case of drugs, it has been found that
the fat-soluble molecules (lipid-soluble drugs) are absorbed through these mucosal cells very well."
Approximately what percentage of the body's energy needs at rest is supplied by fat
Around 60% to 70% of the body's energy at rest comes from fat. Our metabolism is designed to extract energy from a mix of macronutrients and at rest, the body shifts towards using more energy from fat.
Explanation:Approximately 60% to 70% of the body's energy needs at rest are supplied by fat. Our bodies are designed to extract energy from a mix of macronutrients including fats, proteins, and carbohydrates. When we are at rest, the metabolism shifts towards using a higher proportion of energy from fat. This shift occurs because fat, although it takes more oxygen to metabolize than carbohydrates, provides a more dense supply of energy. However, the exact percentage can vary based on several factors like diet, physical activity level, and genetics.
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Red blood cells that are bathed in blood neither shrink nor swell and burst. If the concentration of blood os 0.5 M, what could be the concentration of cytoplasm of RBCs?
Harmful effects of __________ include oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining.
Final answer:
The harmful effects of pain relievers, such as oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining, highlight the significant but sometimes overlooked adverse effects of NSAIDs and Acetaminophen.
Explanation:
The question addresses the harmful effects of pain relievers, which can range from oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, to deterioration of the stomach lining. Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to prevent blood clots and decrease inflammation but can cause gastrointestinal ulcers and bleeds, as well as kidney disease. Acetaminophen, an alternative with fewer side effects than aspirin, does not inhibit platelet aggregation but poses a severe risk of liver damage in cases of overdose.
Oversensitivity to light is a less discussed but significant adverse effect of some pain relievers.The increased risk of heart attack stroke and liver damage are alarming concerns associated with the prolonged or improper use of NSAIDs and Acetaminophen.Thinning of the blood and deterioration of the stomach lining highlight the systemic impact these medications can have beyond their targeted pain-relieving effects.Individuals must use these medications as directed and be aware of their potential side effects to minimize health risks.
_______ is vesicle-aided transport out of the cell.
What lung values changed (from those of the normal patient) in the spirogram when the patient with emphysema was selected?
When the patient with emphysema was selected lung values changed (from those of the normal patient) in the spirogram are:
ERV, IRV, RV, FVC, FEV1, FEV1 %
The reason behind the changes of these values are due to the loss or inability of electric recoil. A spirogram (graph like structure obtained by the respiratory movements) is measured by spirometer.
Lymphatic ________ are formed from the union of the largest collecting lymphatic vessels.
Why is evolution considered a theory and not a hypothesis?
The Big Bang theory was supported by the discovery of the
A- galaxies in the universe
B- temperature of the universe
C-gravitational forever between planets
D- red shift in electromagnetic spectrum
Answer:
Option D, red shift in electromagnetic spectrum
Explanation:
According to the Big Bang theory the universe is continuously expanding and all celestial bodies are moving away from each other. This fact was established when red shift affect was discovered. A red shift is basically a shift/increase in the wavelength of light released by any star over a period of time. The farther the star, the more is its wavelength red shifted.
This red shift is continuously increasing which means that the light emitting celestial objects are continuously moving away from each other.
Hence, option D is correct answer
A friend tells you he's having flashbacks and vivid nightmares of past events. In addition, he's feeling emotionally numb. You might be concerned that he needs to be checked for possible
A. PTSD.
B. DSM.
C. GAD.
D. OCD.
The correct answer is option A, that is, PTSD.
PTSD or post-traumatic stress disorder is the condition that illustrates an extreme and on-going emotional reaction, which occurs due to coming in contact with trauma or extreme stress. Clinically, such incidents comprise threatened or actual death, a threat to physical or psychological integrity, or any kind of serious physical injury.
PTSD is considered to be mainly an anxiety disorder and should not be confused with usual adjustment and grief post-traumatic events. The symptoms of PTSD comprises flashbacks, nightmares, insomnia, emotional detachment, irritability, loss of appetite, anxiety, and clinical depression.
The sixth mass extinction event is likely being caused by ___
Genes that are linked together _____.
Why don't we experience a solar eclipse every month?
Which characteristics are used to differentiate between the six kingdoms?
Answer;
-The body type, cell type, cell structure, nutrition
Explanation;
-There are six commonly accepted kingdoms. Each kingdom includes a set of organisms that share similar characteristics. The six Kingdoms are: Archaebacteria, Eubacteria, Fungi, Protista, Plants and Animals.
-Organisms are placed into these categories based on similarities or common characteristics. Some of the characteristics that are used to determine placement are cell type, nutrient acquisition, and reproduction.
-The two main cell types are prokaryotic and eukaryotic cells. Common types of nutrient acquisition include photosynthesis, absorption, and ingestion. Types of reproduction include asexual reproduction and sexual reproduction.
The characteristics are used to differentiate between the six kingdoms
1. similarities or differences in morphological features (outer forms)
2. anatomy (body structure)
3. physiology (body chemical reaction)
4. behavior
5. produce offspring / mate each other
6. gene mapping
Further explanationGrouping living things is known as classification
The study of grouping living things is called Taxonomy
The classification of living things aims to
1. knowing the benefits for the benefit of humans2. knowing his family relationship3. knowing the dependence between living things4. makes it easy to learn living thingsIn ancient times the classification of living things was classified into only 2, namely plants (kingdom Plantae) and animals (kingdom Animalia)
In subsequent developments the classification of living things is divided into 6 kingdoms, namely:
1. Animalia (animal), are multicellular \2. Plantae (plants) are multicellular3. Fungi (fungi) have eukaryotic cells4. Protists, single-celled5. Kingdom Monera is no longer used and instead the kingdom of Archaebacteria and Eubacteria appears.Monera is a single-celled living creature
The classification of living things themselves is based on
1. similarities or differences in morphological features (outer forms)
2. anatomy (body structure)
3. physiology (body chemical reaction)
4. behavior
5. produce offspring / mate each other
6. gene mapping
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A heat wave that causes an organism to move to a cooler climate is an example of a(n)
a. adaptation
b. extinction
c. speciation
d. stimulus
Answer: stimulus
Explanation: I am a university graduate.
Inhalation and exhalation move air into and out of the lungs. what happens when you inhale and exhale? drag the labels to the correct locations on the flowchart to identify the steps of inhalation and exhalation.
When you inhale or breathe in air, your diaphragm will contract or tighten and it will move downward. This will result to an increase in space in your chest cavity where your lungs will expand. The intercostal muscles located between your ribs will also help in the enlargement of the chest cavity. When your lungs expand, air will flow through your nose or mouth. The air will travel through your wind pipe and into your lungs. It will pass through your bronchial tubes and it will eventually reach and enters the alveoli or the air sacs.
When you exhale or breathe out on the other hand, your diaphragm will relax and it will move upward into your chest cavity. The intercostal muscles will likewise relax resulting to the reduction of space in the chest cavity. When the space in the chest cavity gets smaller, air that is carrying carbon dioxide will be forced out of your lungs and windpipe and it will eventually go out of your nose or mouth.
What is not a characteristic of a multiparty system?
The characteristic which is not in the multi-party system is dictatorship.
A multi-party system is a system of government related to politics in which there are more than two parties have a chance to rule and get real political power. There is an option for parties either they want to rule on their own or they become a part of federation government.
How might a substrate of the citric acid cycle block respiration when it is present in great excess
Which part of a flower will develop into fruit?
The ovary is the part of the flower that develops into a fruit.
Type of allele with the ability to hide or mask the expression of a recessive allele.
The most important and most effective way to control pests in a food establishment is to _______.
The most important and most effective way to control pests in a food establishment is to implement Integrated Pest Management (IPM). This is an ongoing cycle of inspecting, identifying, analyzing, and treating pests in the establishment.
FURTHER EXPLANATIONThere are several steps in implementing the IPM.
1. The first step is to look at the entire establishment and identify areas where pests come through.
2. Once the areas where pests may enter and exit the establishment are identified, an action plan to ensure that pests are unable to pass through are put in place such as covering holes or entry points. Keeping the areas clean and sanitized and observing proper waste disposal are also key practices to help prevent infestation.
3. The kind of pests should also be identified and monitored to be able make an appropriate treatment plan based on their behavior. The correct selection of pest control treatment is necessary to ensure that the treatment is specific to the kind of pests that are found on the site. Also, an analysis of why these pests are found on site must be conducted so that further preventive measures may be put in place.
4. When planning and implementing pest control measures start with non-chemical methods first like baiting and trapping pests. Only when these methods fail should chemical control methods be used and only with doses specifically needed for the identified and targeted pests.
5. Proper documentation of the pest control cycle must be prepared for a smooth implementation of the continuous integrated pest management.
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The most effective and most important way to control pests in a food establishment is to implement an integrated pest management program.
Further Explanation:
Humans, pests, and rodents prefer to live in a warm environment in cold or wintery days. That’s why pests find their way inside the building and home if they smell any food. Pests like cockroaches, flies, and rodents may cause harmful disease and people get sick frequently. To prevent food from getting contaminated by pests, the manufactures should apply for an integrated pest management program. It mainly consists of different precautionary phrases that are used to prevent pests out of the facilities and to eradicate the pest that is present in the food. A food safety regulator checks and ensures that the food is fit to be consumed. The pathogens that are present in the food can affect the person. This can result in the transmission of the pathogen.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Microorganism
Keywords:
Human, food, transmission, environment, cockroach, flies, building, home, facilities, consume, pathogen, disease, sick, rodents.