Answer:
A total of 1,650 tickets were recently sold Friday night's football game. Each adult
ticket cost $3.50, and each student ticket cost $2.00. The total revenue for ticket
sales was $4,650. Which system of equations below could be used to determine a,
What aspect of agriculture has a negative effect on biodiversity and ecosystem stability?OA. Species evenessOB. MonocultureOC. EndemismOD. HotspotsReset SelectionDELL
Monocultures have negative effects on the ecosystem mainly because they reduce biodiversity.
As there is only one plant species in agricultural crops, the species residing there are endangered because their usual habitat is destroyed and the organisms move to another area.
6. Why are two rounds of replication needed to make a spontaneous mutation arising from a tautomerization permanent in the DNA
Two rounds of replication are required to make a spontaneous mutation arising from a tautomerization permanent in DNA because replication creates two identical copies of the DNA strand that includes the mutation.
Tautomerization is a process in which the positions of atoms in a molecule's functional groups are changed by the movement of a hydrogen atom, resulting in the production of a tautomeric form of the molecule. In organic chemistry, this occurs frequently with keto-enol tautomerization, where a ketone and an enol are interchangeable tautomers.
To become a permanent mutation in the DNA sequence, the tautomeric form of DNA must be replicated. The tautomeric form of a nucleotide base may be paired with an inappropriate nucleotide, resulting in a base substitution mutation in one strand of the double helix.A permanent mutation occurs when a mutation occurs during replication and is not repaired.
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To survive hunter-gatherers changed their environment bya.Burning the prairies to prevent trees from growing.B.Spreading plants to areas beyond where they originally grew.C.Both (a) and (b)d.Neither (a) nor (b)
1752 1439
This chart shows the composition of lunar soil. Which
element is third most abundant?
Answer:
D
Explanation:
The chromosomes of offspring are not identical to those of their parents or siblings because ______ is shuffled during meiosis.
The chromosomes of offspring are not identical to those of their parents or siblings because genetic information is shuffled during meiosis.
Meiosis can be described as a cell division process by which gamete cells divide. The number of chromosomes is reduced to half in this cell division process.
During the process of meiosis, genetic information is shuffled between non-sister chromatids of the homologous chromosomes. This shuffling process is referred to as crossing over. A new combination of alleles is formed due to the process of crossing over.
It is due to the process of crossing over that the organisms produced are not identical to each other or the parents. Genetic diversity is important in order for populations to survive which is possible through the process of meiosis.
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How are the processes of DNA replication and mRNA transcription different?
Answer:
The process of DNA replication involves the duplication of the entire DNA molecule, while mRNA transcription involves the synthesis of a single-stranded RNA molecule that is complementary to a portion of the DNA molecule. Additionally, DNA replication occurs in the nucleus of eukaryotic cells, while mRNA transcription occurs in the nucleus (in eukaryotes) and the cytoplasm (in both prokaryotes and eukaryotes).
Explanation:
Explain how the disruption of the natural carbon cycle is interrupted when humans remove vegetation cover from the Earth’s crust.
The disruption of the natural carbon cycle is interrupted when humans remove vegetation cover from the Earth’s crust by decreasing the rate of photosynthesis, which leads to an increase in carbon dioxide concentration in the atmosphere and a decrease in the amount of carbon dioxide stored in vegetation.
When humans remove vegetation cover from the Earth’s crust, they are interfering with the natural carbon cycle, which is a complex process that involves several steps. One of the most important steps in this process is photosynthesis, which is the process by which plants convert carbon dioxide from the atmosphere into organic matter that is used to build plant tissues. During photosynthesis, plants take in carbon dioxide from the atmosphere and use it to produce glucose and oxygen. The glucose is used to build plant tissues, while the oxygen is released back into the atmosphere.When humans remove vegetation cover from the Earth’s crust, they are decreasing the rate of photosynthesis, which leads to an increase in carbon dioxide concentration in the atmosphere and a decrease in the amount of carbon dioxide stored in vegetation. This is because plants are no longer present to take in carbon dioxide from the atmosphere and use it to build plant tissues. Instead, the carbon dioxide remains in the atmosphere, contributing to the greenhouse effect and climate change.
In conclusion, the disruption of the natural carbon cycle is interrupted when humans remove vegetation cover from the Earth’s crust by decreasing the rate of photosynthesis, which leads to an increase in carbon dioxide concentration in the atmosphere and a decrease in the amount of carbon dioxide stored in vegetation. This has significant impacts on the environment and contributes to climate change.
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explain how red blood cells adapted to carry out their function.
Answer:
they are small and flexible, they contain hemoglobin, and they have a disc shape to maximize their oxygen absorbtion
Explanation:
increased population, a higher body temperature, and a rapidly beating heart are all possible responses to a stressful situation.these body responses are most likely a direct result of the interaction
Increased perspiration, a higher body temperature, and a rapidly beating heart are all possible responses to a stressful situation, and these body responses are most likely a direct result of the interaction of the nervous and hormonal systems.
What does the interaction of the nervous and hormonal systems mean?The interaction of the nervous and hormonal systems refers to the body process in which the expression of certain chemical messengers called hormones may control concomitant responses triggered by the nerve system, which is an organ system aimed at sensing signals from the environment in order to process them and then produce a response.
Therefore, with this data, we can see that the interaction of the nervous and hormonal systems may lead to increase perspiration, the temperature inside the body, and the heart pumps when the body is under a given stressful situation.
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usefulness of earthworm
Answer:By their activity in the soil, earthworms offer many benefits: increased nutrient availability, better drainage, and a more stable soil structure, all of which help improve farm productivity. Worms feed on plant debris (dead roots, leaves, grasses, manure) and soil. ... Nitrogen in the casts is readily available to plants.
Explanation:
Earthworms have the ability to eat and mix large amount of soil and organic matter and deposit it in the form of casts. They also enhance incorporation and decomposition of organic matter, increase soil aggregate stability, improve porosity and water infiltration, and increase microbial activity.
Which of the following describes an important experimental strategy in deciphering the genetic code? a. comparing the amino acid sequences of proteins with the base sequ…Which of the following describes an important experimental strategy in deciphering the genetic code?a. comparing the amino acid sequences of proteins with the base sequence of their genesb. analyzing the sequence of RNAs produced from known DNA sequencesc. analyzing mutants that changed the coded. examining the polypeptides produced when RNAs of known sequence were translated
One important experimental strategy in deciphering the genetic code is analyzing the sequence of RNAs produced from known DNA sequences.
To decipher the genetic code, scientists have employed various experimental strategies. One of these strategies involves analyzing the sequence of RNAs produced from known DNA sequences. This approach allows researchers to examine the RNA molecules that are synthesized based on the DNA template.
By comparing the RNA sequences with the corresponding DNA sequences, scientists can identify the specific codons that code for different amino acids. This process helps in understanding the relationship between the genetic information stored in DNA and the resulting proteins.
By analyzing the RNA sequences, researchers can deduce the rules governing the genetic code and decipher the specific codons that correspond to each amino acid.
This experimental strategy has played a crucial role in unraveling the fundamental principles of molecular biology and has contributed to our understanding of how genetic information is translated into functional proteins.
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A benefit of moderate physical activity is the reduction in risk of hypokinetic disease and early death.
An individual with sedentary lifestyle might be at risk for hypokinetic diseases such as high blood pressure. Moderate physical activity such as walking and biking gives a great benefit to avoid such risk. Moderate physical activity can reduce major medical conditions that might lead to early death. Too little movement or activity might lead to hypokinetic diseases. Regardless of the intensity of the physical activity, it will lower the risk of an early death due to hypokinetic diseases.
Colorado has a vast population of lodgepole pines. A population of lodgepole pines has been killed in a section of the forest. What is a possible limiting factor of that population?
devastation by the pine bark beetle
Colorado’s long history of acidic soils
genetic variability
shallow root system
The possible limiting factor is the devastation by the pine bark beetle.
What is a limiting factor?A limiting factor is any factor that affects the size of a population of organisms which inhibits their growth or even existence.
The possible limiting factor of population of lodgepole pines is the devastation by the pine bark beetle.
This is so because only a section of the population was affected and not the whole.
If it was the Colorado’s long history of acidic soils, genetic variability and shallow root system, the whole population of lodgepole pines would have been affected.
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Answer:
a. devastation by the pine bark beetle
Explanation:
HELP ME WITH THIS PLEASE
Two students are discussing natural selection in bacteria and how it can relate to antibiotic resistance in bacteria.
Bernadette states that when antibiotics are used, bacteria can respond by developing traits to help them defeat the antibiotic, which then may increase their fitness.
Dominique states that there is already a variety of traits among the bacteria. Bacteria that have traits that allow them to survive the antibiotic and reproduce may have higher fitness.
Which individual's reasoning do you agree with more and why?
Answer:
sorry
Explanation:
hindi ko po Alam same din nga tayo
Sedimentary rocks form ___.
1. Layers
2. From heat and pressure
3. From cooling magma
4. From folliation
Sedimentary rocks form layers. Thus, the correct option is A.
What are Sedimentary rocks?Sedimentary rocks may be defined as a type of rocks that are created by the collection or deposition of mineral or organic particles on Earth's surface. After this, an activity of cementation is followed.
The layer of sedimentary rocks determined the age of fossils that are buried in those such layers.
Therefore, the correct option is A.
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Which is the role of the gall bladder?
Answer:
Explanation:
Almacena bilis, un líquido producido por el hígado para digerir las grasas. Cuando el estómago y el intestino digieren los alimentos, la vesícula biliar libera bilis a través de un tubo denominado conducto biliar común.
.In the context of specialized cell structure,the myelin sheath is a layer of cells containing
A)fat.
B)scar tissue.
C)glia.
D)treelike fibers.
anyone help me please I need help
Answer:
Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. If one of the alleles is dominant, then the associated characteristic is less likely to manifest.
Explanation:
After you have written your research question and thesis statement, submit them to your teacher for review and feedback. Then, schedule a meeting with your teacher to discuss your presentation topic. You should be prepared to answer these questions:
What topic are you curious about and why?
How can you learn more about this topic? (investigate/research)
What important questions will you ask to guide your investigation?
What types of resources will you use?
Describe how resources support a position.
Use the space below to write notes and any feedback your teacher gives you during the discussion. If you cannot have a meeting with your teacher, write down your answers to the questions above.
Answer:
Step 1: Prewriting and Choosing a Topic. Prewriting can help you take a general topic and make it more specific. ...
Step 2: Researching. Researching your subject is an important step in writing because it helps you narrow your focus. ...
Step 3: Outlining. ...
Step 4: Drafting. ...
Step 5: Revising.
Explanation:
17. Outline any five specialized cells in living things.
the term meaning the freeing of a kidney from adhesions is:
Answer:
Ureteroplasty is surgery to remove the stricture.
Explanation:
A wave has a frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
Answer:
500 m/s
Explanation:
Velocity (v) = wavelength (λ) x frequency (f)
V = 10 x 50
V = 500 m/s
b. nuclear______occurs in star's
core that combines elements to make
BIGGER elements.
Answer:
nuclear fussion occurs in star's core that combines elements to make BIGGER elements.
Explanation:
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g some proteins owe their functions to the three dimensional shape they have; what is responsible for holding the shape of a protein? a. is established on the basis of the hydrophobic and hydrophilic forces that develop b. occurs spontaneously and remains constant c. the length of the protein d. r-group interactions
The three-dimensional shape of a protein is held together by r-group interactions. These interactions are established on the basis of the hydrophobic and hydrophilic forces that develop, which contribute to the overall stability of the protein structure.
While the length of the protein is important, it is the specific arrangement of amino acid residues and their interactions that determine the protein's shape and function. These interactions occur spontaneously and remain constant, allowing the protein to maintain its structure and carry out its biological function. Overall, the intricate three-dimensional shape of a protein is crucial for its activity and is carefully maintained by various chemical interactions within the protein structure.
The factor responsible for holding the shape of a protein is primarily the r-group interactions. These interactions include hydrophobic and hydrophilic forces, which help establish the three-dimensional shape. This shape, essential for protein function, forms spontaneously and can change under different conditions. While the length of the protein does play a role in the overall structure, it is the r-group interactions that hold the protein in its functional shape.
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The shape of a protein is held by a combination of factors, but primarily by the interactions between the R-groups of the amino acid residues that make up the protein. These interactions include hydrogen bonding, van der Waals forces, and covalent disulfide bonds. The shape is established on the basis of the hydrophobic and hydrophilic forces that develop between these R-groups, which determines the overall folding of the protein.
The length of the protein is important for determining its primary structure, but it is the interactions between the R-groups that ultimately determine the protein's three-dimensional shape. These interactions occur spontaneously but can be influenced by various factors such as temperature and pH. The three-dimensional shape of a protein is established based on the hydrophobic and hydrophilic forces that develop, as well as additional interactions such as hydrogen bonding, ionic interactions, and disulfide bridges. These interactions stabilize the protein's structure, allowing it to maintain its shape and perform its specific functions.
While the length of the protein and its folding process are important, it is the R-group interactions that ultimately determine and hold its shape.
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Which of the following occurs during rapid eye movement (REM) sleep?
a. The muscles relax, and body temperature, blood pressure, heart rate, and respiratory rate fall.
b. The muscles are very relaxed and body temperature, blood pressure, and heart rate, and respiratory rate are at their lowest levels.
c. The muscles are paralyzed, and body temperature, blood pressure, and heart rate and respiratory rate increase.
d. A person falls into light sleep.
e. A person begins to relax and feels drowsy.
In the case of Rapid eye movement (REM) sleep - The muscles are paralyzed, and body temperature, blood pressure, and heart rate and respiratory rate increase.
Hence, statement C is correct.
Rapid eye movement Sleep is a distinct phase of sleep in mammals and birds, characterized by random rapid eye movement, low muscle tone throughout the body, and the sleeper's proclivity to dream vividly.Rapid eye movement (REM) sleep behavior disorder is a sleep disorder in which you physically act out vivid, often unpleasant dreams during REM sleep with vocal sounds and sudden, often violent arm and leg movements — also known as dream-enacting behavior.To know more about Rapid eye movement (REM) sleep here
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g imagine that in the future we discover a set of genes that is largely responsible for causing aging in humans. also, imagine that we can alter these genes in some way so that we live longer. considering antagonistic pleiotropy, why might this be a concern?
Antagonistic pleiotropy is a genetic phenomenon where a single gene affects multiple traits, with positive effects on some traits and negative effects on others. In the case of aging, it is possible that the set of genes responsible for causing aging in humans also have positive effects on other aspects of health and fitness, such as reproductive success and immunity.
If we were to alter these genes in some way to extend lifespan, it is possible that we would inadvertently disrupt the positive effects of these genes on other traits. For example, if a gene that promotes cellular repair also increases the risk of cancer, altering it to extend lifespan could also increase the risk of cancer. Similarly, if a gene that enhances immunity also increases inflammation and tissue damage, altering it to extend lifespan could also compromise the immune system and increase susceptibility to infections.
Thus, the concern with altering the set of genes responsible for causing aging is that we may be trading off lifespan for other aspects of health and fitness. This is not to say that we should not pursue research on extending lifespan, but rather that we should be mindful of the potential trade-offs and strive to understand the full scope of the genetic and physiological mechanisms involved in aging before attempting to manipulate them.
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Will award 70 points!
Calculate the rate of photosynthesis(mm/hr) for Elodea if when measuring net photosynthesis, the water level moved up 5 min and, when measuring cellular respiration it took 20 minutes for the water level to move down 1mm.
63mm/hr
57mm/hr
67mm/hr
61mm/hr
52mm/hr
Answer:
Net photosynthesis- 3mm/20min- 1.5mm/10min
Cellular respiration- 1mm/15min- 0.66mm/10min
Gross photosynthesis = Net photosynthesis + Cellular respiration = 1.5+0.66 = 2.16 (mm/10min)
Rate of photosynthesis = (gross photosynthesis)6 = 2.16 *6 = 12.96 mm/hr
As we are measuring rate of photosynthesis in hr ,we should multiply gross photosynthesis with 6 (as we measured gross photosynthesis for 10 min).
Explanation:
3 ways how each of the atmosphere, lithosphere and hydrosphere can be damaged by environmental pollutants
The three ways by which the atmosphere, lithosphere, and hydrosphere can be damaged are pollutant emissions, particulate matter, and combustion appliances.
How may environmental pollutants harm the lithosphere, hydrosphere, and atmosphere?Solid, liquid, and certain gases that are suspended in the air are the main contributors to air pollution. These gases and particles can come from factories, dust, pollen, mold spores, volcanoes, wildfires, and vehicle and truck emissions. Aerosols are solid and liquid particles that are suspended in our air.
Pollutant emissions into the atmosphere have the potential to alter the climate.While different types of particulate matter (PM) can either warm or cool the environment, ozone in the atmosphere warms the climate.Common causes of air pollution include motor vehicles, industrial operations, household combustion appliances, and forest fires. Particulate matter, carbon monoxide, ozone, nitrogen dioxide, and sulfur dioxide are pollutants of great public health concern.To know more about environmental pollutants and pollution, visit:
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cosmetologists may choose to specialize and work in a specific type of facility. which facility would be appropriate for a specialist?
Cosmetologists may choose to specialize in various fields such as hair, nails, skincare, makeup, and more. Depending on their area of expertise, they may opt to work in specific types of facilities.
A cosmetologist gives facial and body clients pleasant and calming skin treatments. They offer a variety of skin care procedures as well as services to enhance one's appearance, including applying makeup, getting facial and scalp treatments, styling hair, and getting manicures and pedicures.
For instance, a hairstylist may choose to work in a salon, barbershop, or even a film or television studio. A nail technician may prefer to work in a nail salon, spa, or resort. A skincare specialist may work in a medical spa or dermatologist's office.
Similarly, a makeup artist may work in a theater, television, or film industry. I
n short, the appropriate facility for a cosmetology specialist will depend on their specific area of expertise and the type of clients they wish to serve.
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first to answer easy question gets brainliest
Answer:
C.i guesssssssss!!!!!!!!!!!!!!!!
Answer:
A
Explanation:
Hope this helps