Answers
Related Questions
Muscle cells develop from embryonic precursor cells that have the potential to develop into a number of cell types. Which of the following best explains the particular conditions that commit them to becoming muscle cells? (1 point)
A. All the genetic material is transcribed, but only the genes required are translated.
B. Electrical signals are sent to the individual cells to turn on and off specific genes.
C. Signal cells send out chemical messages to nearby cells to change gene expression.
D. Specific cells have unique DNA that is only the portion re
Answers
Answer:
-muscle precursor cells migrate from the somite to the regions of the embryo that will form muscles (limb buds)
-myogenic precursor cells express the paired homeodomain transcription factor, Pax3 and in some cases Pax7
-mutants lacking functional Pax3 have no limb muscles because of failure of muscle precursors to migrate from the somite to the limb bud
-Pax3/Pax7 positive cells are true stem cells in that they are capable of either self-renewal (proliferation) or differentiation to form committed muscle cells
Explanation:
Specific cells have unique DNA that is only the portion required. The correct option is D.
What is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that form a double helix around one another.
All known living things, including many viruses, have genetic material in their polymers that direct how they should function, grow, and reproduce. Nucleic acids include ribonucleic acid and DNA.
Each of your cells contains these instructions, which are dispersed throughout 46 lengthy structures known as chromosomes. Numerous smaller DNA fragments known as genes make up each of these chromosomes.
Precursor cells in the embryo have the capacity to differentiate into a variety of cell types, including muscle cells. Only the fraction of a certain cell's unique DNA needed to develop into muscle cells is present.
Thus, the correct option is D.
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Drag each label to the correct location.
Geologists study a variety of other characteristics to identify minerals, such as texture, magnetism, streak plate markings,
density, and specific gravity. Use the information you have already gathered, in addition to a few other properties of
minerals, to identify the seven minerals in the chart below. If you need help using the graduated cylinder or scale,
consult the lab instruments and measurements guide. If you do not have access to the seven minerals given, use this
resource to complete the chart.
metallic
nonmetallic
quartz
black markings on
the streak plate
harder than the
streak plate
(hardness greater
than 7)
softer than an iron nail
(hardness less
than 4.5)
gypsum
pyrite
softer than a
fingernail
(hardness less
than 2)
harder than a
fingernail
(hardness greater
than 2)
slippery
feeling
not slippery
feeling
magnetite graphite
magnetic
nonmagnetic
density near
3 g/ml
density near
2 g/ml
fluorite talc
Answers
The correct labeling to the proper location is given below:
Metallic: PyriteNonmetallic: QuartzBlack markings on the streak plate: GraphiteHarder than the streak plate: FluoriteSofter than an iron nail: TalcSofter than a fingernail: GypsumHarder than a fingernail: MagnetiteSlippery feeling: TalcNot slippery feeling: FluoriteMagnetic: Pyrite, MagnetiteNonmagnetic: Quartz, GraphiteDensity near 3 g/ml: MagnetiteDensity near 2 g/ml: GypsumWhat is Geology?Natural science's field of geology examines the features or rocks that make up Earth and other astronomical objects, as well as how they change over time.
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(250 word essay)
What are the environmental problems of this ecosystem and what would be the solution to these problems?
Answers
Answer:
Air pollution is one of the biggest threats to the environment and affects everyone: humans, animals, crops, cities, forests, aquatic ecosystems, and much more. Since the Industrial Revolution, people have been polluting the Earth like never before. There is seldom a place today that has not been subjected to pollutants in one shape or another. Air pollution can be defined as an alteration of air quality that can be described by measures of chemical, biological or physical pollutants in the air. Therefore, air pollution means the unwanted presence of impurities or the strange rise in the proportion of some components of the atmosphere. It can be categorized into 2 areas: visible and invisible air pollution. Air pollution is caused by the presence in the atmosphere of harmful substances, mainly built by human activities, even though occasionally it can result from biological phenomena such as volcanic eruptions, dust storms, and wildfires, also depleting the air quality. The basic answer for air pollution is to drive away from fossil fuels, replacing them with alternative fuels like solar, wind, and geothermal. Creating clean energy is necessary. But equally crucial is to reduce our consumption of fuel by assuming trustworthy habits and using more efficient machines. From planning to destruction, the green building seeks to create environmentally accountable and resource-efficient systems to reduce its carbon footprint. In addition, monitoring air pollution levels has evolved into extremely necessary to detect pollution highlands, better manage air pollution, and ultimately enhance air quality.
Explanation:
You need 4 more words.
Some common environmental problems that ecosystems may face and potential solutions are habitat loss and fragmentation, pollution, climate change, loss of biodiversity, invasive species, overexploitation of resources, etc.
Habitat loss and fragmentation: Ecosystems can be impacted by the destruction and fragmentation of habitats due to human activities such as deforestation, urbanization, and infrastructure development. Solutions include implementing protected areas, reforestation and habitat restoration programs, and sustainable land-use practices.Pollution: Pollution from various sources, including industrial activities, agricultural runoff, and improper waste disposal, can degrade ecosystems and harm organisms. Solutions involve implementing stricter environmental regulations, promoting cleaner production methods, improving waste management systems, and raising awareness about pollution prevention.Climate change: Rising global temperatures, altered precipitation patterns, and increased frequency of extreme weather events pose significant challenges to ecosystems. Solutions include reducing greenhouse gas emissions, transitioning to renewable energy sources, promoting energy efficiency, and adapting conservation strategies to mitigate the impacts of climate change.Invasive species: Non-native species can outcompete native species, disrupt ecological processes, and negatively impact biodiversity. Strategies to address invasive species involve early detection and rapid response programs, implementing control measures, and preventing the introduction and spread of invasive species through improved biosecurity measures.Overexploitation of resources: Unsustainable harvesting of natural resources, such as overfishing, illegal logging, and poaching, can deplete populations and disrupt ecosystem dynamics. Solutions include implementing sustainable management practices, enforcing regulations, promoting responsible consumption, and supporting local communities in adopting alternative livelihoods.Loss of biodiversity: Ecosystems are facing a global decline in biodiversity, with species extinction rates accelerating. Solutions involve establishing protected areas, conserving critical habitats, promoting sustainable land-use practices, and raising awareness about the value of biodiversity.Learn more about Ecosystem, here:
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Lows or low-pressure areas bring fair weather. Highs or high-pressure areas bring
wet weather, high humidity, or both.
True
False
Answers
Answer:
The answer is false have a great day! :D
Low- or low-pressure areas bring fair weather; high- or high-pressure areas bring wet weather, high humidity, or both, and this is a false statement. The low-pressure area is generally unstable and causes the change in weather.
What exactly is low pressure?The low pressure area is formed when the air is lightweight; this can occur in a variety of ways, including at high temperatures, and as a result, air from higher pressure regions flows to the low pressure area, causing disturbances such as the formation of more cloudy and humid weather.
Hence, lows or low-pressure areas bring fair weather, highs or high-pressure areas bring wet weather, high humidity, or both, and this is a false statement. The low-pressure area is generally unstable and causes the change in weather.
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Please help me to fill in the blank correct answers.
Ova are produced in the ovarian follicle and released each month. They are arrested in this step of meiosis_____. If they are fertilized by a sperm, this will happen in this part of the female’s anatomy______. It fertilizes, the ovum will then implant in the _____
Answers
Ova are produced in the ovarian follicle and released each month. They are arrested in this step of meiosis Prophase I. If they are fertilized by a sperm, this will happen in this part of the female's anatomy: Fallopian tube. If it fertilizes, the ovum will then implant in the Uterus
Ova are produced in the ovarian follicle and released each month. They are arrested in this step of meiosis: Prophase I. During meiosis, ova (eggs) undergo a process of cell division that involves two consecutive divisions, meiosis I and meiosis II. In meiosis I, the ova are arrested in the prophase stage, specifically in prophase I, until they are released for potential fertilization.
If they are fertilized by a sperm, this will happen in this part of the female's anatomy: Fallopian tube (or oviduct). After ovulation, the released ovum travels through the fallopian tube. If fertilization occurs, it typically happens within the fallopian tube, where the sperm meets the ovum.
If it fertilizes, the ovum will then implant in the: Uterus. After fertilization, the resulting embryo undergoes further development and eventually implants into the lining of the uterus, a process called implantation. The uterus provides a suitable environment for the embryo to grow and develop throughout pregnancy.
It's important to note that these processes occur in the female reproductive system and are essential for reproduction and the continuation of the species.
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Why do onion skin cells have little or no chloroplasts? Explain.
Answers
Answer: The chloroplasts are filled with a special green chemical (pigment) called chlorophyll. This green pigment helps the cell trap light energy for photosynthesis. Onion cells are not green. They get no light, so do not need chloroplasts.
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Question 4
1 pts
A cell filled with a 0.7 M solution is placed into a dish containing a 0.4 M solution. The
cell's membrane is permeable to water but not to the solute. Which of the following
statements is correct?
The solute will tend to move into the cell
The solute will tend to move out of the cell.
The cell will shrivel
The solution outside of the cell is hypertonic to the solution inside of the cell
The cell could lyse
Answers
The Big Five personality factors are five ranges of key personality traits. Describe each of the five factors. Then, describe how stable the traits are and how heritable they are.
Answers
Answer:
The big five traits are:
1- extraversion
2- neuroticism
3- agreeableness
4- openness
5- conscientiousness
Explanation:
The Big Five personality traits, also called the OCEAN model, is a widely accepted theory in psychology that states that personality can be reduced into 5 major factors: extraversion, agreeableness, openness, neuroticism and conscientiousness. Agreeableness refers to the manner in which one person treats other people. Conscientiousness refers to the ability to control impulses. Extraversion refers to the sociability level. Openness refers to the willingness for new experiences. Neuroticism refers to the person's emotional stability. These five traits are relatively stable during lifetime. Moreover, it has been shown that the Big Five traits are affected by both genetic factors (family) and cultural factors (education) in a proportion of 50:50. In consequence, approximately half of the differences observed between individuals result from genetic inheritance and half from environment.
A volcanic eruption covers a wide area of forest with ash lava and volcanic rock which of these describes the first stage of ecological succession that will begin to return biotic factors back to the forest community and return it to a state of equilibrium
Answers
The process of primary succession will take place to return the forest to a state of equilibrium.
After an earthquake or volcanic eruption, lichens break down the rocks to produce new, nutrient-rich soils. This process is known as primary succession. Pioneer species are the first species that settle a region following a significant disturbance; they contribute to shaping the new ecosystem. Primary succession happens when new land is created or rock is exposed, such as after a volcano eruption like the ones on Hawaii's Big Island. New land is continuously being generated as the lava flows into the ocean. Every year, the Big Island gains about 32 acres of new land. First, certain hardy plants and lichens with little soil requirements, known as pioneer species, can develop because weathering and other natural forces degrade the substrate sufficiently.Therefore, option C. is correct.
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Chrlorophyll is stored in the Cytoplasm?
True
False
Answers
Answer:
False
Explanation:
There are many different types of pigments in nature, but chlorophyll is unique in its ability to enable plants to absorb the energy they need to build tissues. Chlorophyll is located in a plant's chloroplasts, which are tiny structures in a plant's cells. This is where photosynthesis takes place.
What is the main interaction between the respiratory and circulatory
systems?
A. They send hormones to each other.
B. They exchange oxygen and carbon dioxide.
C. They communicate through neuroendocrine cells.
D. They exchange information across synapses.
Answers
Answer:
B. They exchange oxygen and carbon dioxide.
Explanation:
The main interaction between the respiratory and circulatory systems is the exchange of oxygen and carbon dioxide. The respiratory system takes in oxygen through inhalation and releases carbon dioxide through exhalation. The circulatory system then transports oxygen-rich blood to the body's tissues and organs, while also picking up carbon dioxide waste to be eliminated from the body. This exchange occurs through the walls of the alveoli in the lungs and the walls of capillaries in the circulatory system. Therefore, option B is the correct answer. The other options, such as sending hormones or exchanging information across synapses, are not directly related to the interaction between the respiratory and circulatory systems.
Each day the moon rises later by approximately one hour because the:
A)Earth revolves round the Sun in 365 days.
B)Earth rotates 360 degrees on its axis in twenty-four hours.
Moon rotates 360 degrees on its own axis in twenty seven days
D)Moon's position shifts everyday due to its revolution around the Earth.
Answers
Answer:
D
Explanation:
The moon moves to the East each day (about 15⁰) in its orbit around the Earth, which takes a total of 27.3 days. The moons orbit around Earth is a complete circle, which is 360⁰. It takes approximately 1 hour each day for the Earth to catch up to the moon, delaying it's rising by 1 hour.
The table shown below represents the number of species growing in an area that was logged using clear-cutting 45 years ago in Temagami, Ontario. Data was collected periodically over 45 years.
Describe the changes occurring in vegetation type and species diversity over the 45 years.
What does the pattern of change tell you about what is happening in this area?
Explain how the data supports your conclusion.
Answers
According to the information we can infer that in general the number of species has increased.
What conclusion can we draw from the graph?Based on the information in the graph, we can conclude that over the years the number of species has increased. In the case of grasses, it went from having 32 species to having 35. In the case of trees, it went from having 0 to having 24, and in the case of shrubs, it went from having 0 to having 18.
In the row that shows the total number of species, it went from having 32 to having 77, which means that it doubled the number of species in this period of time.
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Compare and contrast cladistics and phylogeny. What are their advantages and disadvantages? Which is the most useful in understanding how an organism developed into its current form? Which concept most strongly supports your opinion about the origin of any given organism?
Answers
Cladistics categorizes organisms depending on the most recent common ancestor, whereas phylogeny analyses the history of the evolution of a given taxonomic group.
What is Cladistics?Cladistics is a subsystem of classification to organize organisms depending on the most recent common ancestor, which is based on observable (current) phenotypic/molecular features.
Conversely, phylogeny refers to how we interpret the relationships between organisms from an evolutionary point of view.
In conclusion, Cladistics categorizes organisms whereas phylogeny analyses the evolution of a given taxonomic group.
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The aperture diameter (distance from side to side) of the opening of the telescope in millimeters. This is the area that lets light in. This telescope has a 18 mm aperture. Telescopes have a limit to how much useful magnification you can get, and this depends on the size of the aperture. Past that limit, and the image begins to break down, so it is not recommended to magnify higher than this amount. In general, the maximum useful magnification is 1.97x for every millimeter of aperture. Based on the size of the telescope’s aperture, what is the maximum useful magnification for this telescope?
Answers
Answer:
D. 35x
Explanation:
Given: For every millimeter of aperture, the maximum useful magnification = 1.97x
Aperture = 18 mm
Thus, the maximum useful magnification = 1.97 × 18 = 35.46
= 35x
if a random mutation occurred in the bee species that led to a new phenotype in their sex pheromones that allows males to more accurately identify females, how might the presence of orphrys sphegodes act as a selection pressure that influences the fitness of individuals with this new version of the trait in competition with individuals with the original sex pheromone cues?
Answers
Bees are attracted to pheromones. It is a kind of scent that attract bees for mating. If there is the presence of orphrys sphegodes, there will be a deception in the selection of bees to mate because of the attraction made by these scent. Orphrys sphegodes is a kind of orchid that emits a scent to attract male bees to mate with the flower. If this new scent will be a new trait of a female bee, it will serve as a selection pressure that will influence the fitness of the bee for mating to the original sex pheromone cues. The accuracy of the male bee to identify the female bee that is fit for mating will be jeopardize because of the competition made by this new trait.
What "codes" for proteins that your body uses
to make eye pigment, hair color, hair texture and
etc.?
Proteins
Genes
Phosphate-sugar group
Carbohydrates
Answers
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
What are the 4 types of genes?DNA is made up of millions of small chemicals called bases. The chemicals come in four types A, C, T and G. A gene is a section of DNA made up of a sequence of As, Cs, Ts and Gs.
Thus, option "B" is correct.
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Which statement best describes how resources are distributed?
OA. All people and cultures have access to the same resources.
B. Resources are typically used only where they are found.
C. Resources are evenly distributed across the planet.
OD. Some resources are plentiful only in a few areas.
Answers
The best statement of how resources are distributed is D. Some resources are plentiful only in a few areas.
What should you know about the distribution of resources around the world?Resources are not evenly distributed around the world. There are places with way more resources than others. The availability of various resources can vary greatly between regions.
There are countries with more oil wells when others have none. There are countries with diamonds and others with none. Countries and regions rely on trade to gain access resources that are scarce or unavailable in their area.
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Some resources are plentiful only in a few areas. The correct option is D
What is resources ?Resources are the things that people, organizations, or society have access to and may utilize to meet their needs and achieve their desires.
Since resources supply the raw materials for food, clothing, shelter and other necessities of life, they are crucial for human survival and development. They are fundamental to the development of the economy because they may be used to produce goods and services that are required by contemporary society.
Therefore, Some resources are plentiful only in a few areas
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Why is the human body compares to a fine tuned machine
Answers
Answer:
The human body is compared to a fine-tuned machine because a fine-tuned machine has many parts that work together so the machine can do what it is supposed to do. In the body, organ systems work together so the body can perform tasks like walking, running, and digesting food.
Explanation: Hope this helps!! Mark me brainliest!! Have a great spring break!!
10 or even 5 hardest questions about balance of nature ( in biology) I will give 20 points for an answers. HURRY Up PLEASE
Answers
Here are 10 of the hardest questions about the balance of nature in biology:
What happens to a food chain if a key predator is removed?What is the difference between a food chain and a food web?How does climate change impact the balance of nature?What are keystone species and how do they affect ecosystems?How does human activity, such as deforestation, disrupt the balance of nature?How do invasive species disrupt ecosystems and the balance of nature?How do natural disasters, such as wildfires, affect ecosystems and the balance of nature?What role do decomposers play in the balance of nature?How does biodiversity affect the balance of nature?Can the balance of nature be restored once it has been disrupted?For such more questions on balance of nature
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Do neritic nones have sudden changes
Answers
Answer:
They face pounding waves as well as sudden changes in water levels and temperature that occur with high and low tides. Why is the neritic zone particularly in living things? It is rich in organisms because sunlight passes through its shallow water enabling photosynthesis to occur.
Explanation:
A mathematical model of a food web helps me better understand
Answers
explain the scientific theory of evolution and the evidence scientist found that proves it to be valid ?
Answers
Answer:
There are many theories
But main evidences are
Fossils of Plants animals and other organisms who lived on this planet at sometime. Oprain And Halden theory which suggests the chemical and biological evolution.Is the onion skin composed of one or many cells
Answers
Answer:
It is 2 cells I believe
Answer:
onion skin is comprised of many cells that work in unison to create the onion skin and its texture
Explanation:
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answers
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
a fossil that is older than 200 million years old can be found on land due to plate tectonics
Answers
A fossil that is older than 200 million years old can be found on land due to plate tectonics.
Plate tectonics is the movement and interaction of large sections of the Earth's lithosphere (outermost layer of the Earth) over the asthenosphere (part of the Earth's mantle). This movement can cause the formation of mountains, oceans, and the breakup of continents over millions of years. The movement of plates can also result in the uplift and exposure of rock layers that were previously buried deep beneath the surface, including those containing fossils that are millions of years old.
Therefore, it is possible to find fossils that are more than 200 million years old on land due to plate tectonics, but the process of uplift and exposure of such rocks may take millions of years and require various geological processes.
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--The complete question is, A _____ that is older than 200 million years old can be found on land due to plate tectonics.--
Why does Franklin think he has to help King Louis XVI investigate Mesmer?
Answers
Answer:
I actually took this quiz here is all the answers hope i help
Explanation:
Q1.fins to help him swim faster
Q2.magnetism
Q3.The king had sent aid to the American colonists.
Q4.His gout makes travel too painful.
Q5.He blames his assistant for not using animal magnetism correctly and he returns to Germany.
What is the Polymer for a Nucleic Acid?
Nucleotide
Polypeptide
Monosaccharide
Nucleic Acid
Answers
Answer:
Nucleotide is the polymer for a Nucleic Acid.
If the pH of pure water is 7, ammonia is 12, and coffee is 5, which is acidic, which is
neutral, and which is basic?
Answers
Answer:
acidic :- coffee
basic :- ammonia
neutral :- water
Explanation:
anything with ph value 7 is neutral.
anything with ph value less than 7 is acidic and greater than 7 is basic.
questions abouy chemical and mechanical processes during digestion
Answers
Digestion is a complex process that involves both mechanical and chemical processes to break down food and extract nutrients that are essential for the body to function properly.
Mechanical and chemical processes in digestionChewing, which reduces food to smaller pieces that may be swallowed and more readily digested, is one of the mechanical stages of digestion. After food reaches the stomach, it continues to be mechanically digested by being stirred and mixed with stomach acid, which reduces the food's size.
The actions of enzymes and other digestive chemicals are involved in the chemical processes of digestion. For instance, salivary enzymes start to break down carbs in the mouth, whereas stomach acid and enzymes start to break down proteins. Enzymes from the pancreas, small intestine, and liver help with the digestion and absorption of fats in the small intestine by further breaking down carbs, proteins, and fats.
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