Answer:
Mitocondria
Explanation:
Which model—conservative, semiconservative, or dispersive—is the model we now know is correct?
Answer: Semi-Conservative
Explanation:
The strands separate as seen in the figure and are used to create new strands.
A proposed answer to a scientific question is called a(n) ___________________.
Answer:
The answer is a hypothesis.
Answer:I think hypothesis cuz of “proposed”
Explanation:
Breakout Edu question 2 on family gathering I don’t know if anyone can help but I could use it.
Answer:
Explanation:
.
someone help me on this
Answer:
Explanation:
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How do the digestive tracts of the Nematode and Earthworm differ?
Answer:
Unlike the flatworms in which food and waste enter and exit from the same opening, nematodes have a complete digestive system. An animal with a complete digestive system has a mouth at one end, a long tube with specialized parts in the middle, and an anus at the other end.
Explanation:
Answer this please ASAP FOR 30 POINTS!!!!
Answer:
A
Explanation:
Hello, so we can do this question two ways. 1, we can know what kind of relationship the two types have or 2, we can analyze each relationship and see if it would increase or decrease.
Starting with option 2, we can look at A. A says the population would stay stable because of a commensal relationship. In a commensal relationship, one party benefits and the other neither gains or loses anything. Thus, A could be true because the population would stay stable in this case.
Looking at B, we see it says the population would increase because it has a mutualistic relationship. However, in a mutualistic relationship both species benefit. If the wrasse population died more, that would NOT benefit the other species in a mutualistic relationship, thus B can be eliminated.
Answer C says it would decrease because of its predator and prey relationship. Depending on which one was the predator and which was the prey, one species could benefit from the death of the other while the other didn't. For example, if the wrasses were the prey, the predators would also decrease because they could not eat as well, but if the wrasses were the predators they other population would increase because they would be eaten less. Thus we cannot rule out answer C.
D for an answer is like C, depending on the roles of which was which D could or could not be the answer.
Although method 2 helps eliminate B it still does not tell us the answer, so we look to our knowledge of wrasses and titan tigerfish. Wrasses and titan tigerfish have a commensal relationship. Therefore, one can benefit and the other is neither harmed nor benefited. This relationship is also called symbiotic. Thus, the wrasse population could decrease and since the titan tigerfish do not experience benefits or harm from that species their population will remain the same.
Hope this helps!
Learn how to correctly prepare and observe specimens using _____________________ ______________________ slides.
Microscope slides are used to support samples of organic material to observe under the microscope.
What are microscope slides?
Microscope slides are small flat pieces of thin, delicate glass of varying sizes. Usually, their size is about 75 x 25 mm, but they might vary according to the brand.
They are used to hold samples of tissue of diverse nature to observe under the microscope.
The way to prepare a slide might vary according to what you need to observe under the microscope and if it is a definitive or temporal microscopic prepared.
Sections of the sample are placed over the glass slide and fixated with liquid or other elements. It can be previously stained to observe and differentiate different structures.
Usually, to avoid lens accidents, slides are prepared together with cover glasses, which are even thinner squared pieces of glass that cover the organic material, so the lens does not get in touch with it.
There are graticule slides useful to make counts or take measures of the sample content.
Learn how to correctly prepare and observe specimens using _microscope_ slides.
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what type of organic molecule is this?
Answer:
carbohydrates
Explanation:
because of the carbon & hydrogen
Photosynthesis is the process by which autotrophs produce their own food. It is an anabolic reaction in which energy is stored (endergonic). Consequently, Cellular Respiration is the opposite of Photosynthesis. In Cellular Respiration, heterotrophs consume food to produce energy. It is a catabolic reaction in which energy is released (exergonic). Both metabolic processes are essential to sustain life. Describe the similarities and differences between the biochemical pathways of Aerobic Respiration and Photosynthesis in eukaryotic cells. Include in your discussion the major reactions, the end products, and energy transfers.
The similarities between aerobic respiration and photosynthesis are that they are both metabolic reactions and ATP is used at some point in each of the reactions.
The difference between aerobic respiration and photosynthesis is that:
aerobic respiration produces carbon dioxide and water as an end-product whereas photosynthesis produces oxygen and glucose as an end-product. aerobic respiration uses oxygen and glucose as starting materials whereas photosynthesis uses carbon dioxide and water as starting materials ATP is used by photosynthesis, whereas ATP is produced in cellular respirationThe equations of photosynthesis and celli=ular respiration are given below:
photosynthesis: 6 CO₂ + 6 H₂O + ATP ---> C₆H₁₂O₆ + 6 O₂cellular respiration C₆H₁₂O₆ + 6 O₂ -----> 6 CO₂ + 6 H₂O + ATPWhat is photosynthesis?Photosynthesis is the process by which autotrophs produce their own food.
It is an anabolic process. The equation of photosynthesis is shown below:
6 CO₂ + 6 H₂O + ATP ---> C₆H₁₂O₆ + 6 O₂
Aerobic cellular respiration is a process by which oxygen is used by heterotrophs to break down food molecules to produce energy.
The equation of aerobic cellular respiration is given below:
C₆H₁₂O₆ + 6 O₂ -----> 6 CO₂ + 6 H₂O + ATP
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List three organisms that live in the rainforest
Answer: Poison Dart Frog, Jaguar, Sloths
Explanation:
Cell theory describes the basic function of all living things. Why is this considered a theory and not a law? Responses It was based on observations and does not require math calculations. It was based on observations and does not require math calculations. It is based on opinion and not facts. It is based on opinion and not facts. It can only be changed if a law is developed first. It can only be changed if a law is developed first. It was developed by a single person and not a large group of scientists.
Answer:
What is the cell theory? It has three main parts:
1. All living things are made up of cells.
2. Cells are the basic building blocks of life.
3. All cells come from preexisting cells created through the process of cell division.
As science evolved, three more components were added to the theory. Some biology classes don’t require you to know these parts of the cell theory because they weren’t part of the original definition, but it’s still useful to be aware of them:
4. Energy flow occurs within cells.
5. Hereditary information is passed from cell to cell.
6. All cells have the same basic chemical composition.
So what does the cell theory actually mean? Let’s break it down. The first part of the cell theory states that all living things are made up of cells. Anything that’s alive, from bacteria to plants to humans, is composed of cells. And what are cells? The literal definition is a cell is a group of organelles surrounded by a thin membrane.
The cell theory definition states that cells are the building blocks of life. Cells both make up all living things and run the processes needed for life. Your hair, skin, organs, etc. are all made up of cells. In fact, each person is estimated to be made up of nearly 40 trillion cells! Each part of a cell has a different function, and your cells are responsible for taking in nutrients, turning nutrients into energy, removing waste, and more. Basically, everything your body does, it does because cells are directing the action!
Explanation:
hope dat helped
Which of the following is NOT an area of concern regarding the common type of waste management systems?
Responses
decomposition creates unsteady levels of energy
waste contains high levels of harmful bacteria
decomposition emits greenhouse gases
waste can end up in groundwater and lakes
The statement which is not an area of concern regarding the common type of waste management systems is decomposition creates unsteady levels of energy.
The first response is correct.
What is waste management?Waste management or waste disposal includes the processes and actions required to manage waste from its inception to its final disposal.
Waste management has impacts on the environment which we live. Poor waste management that ranges from non-existing collection systems to ineffective disposal causes air pollution, water and soil contamination.
Other types of waste like the open and unsanitary landfills contribute to contamination of drinking water and can cause infection and transmit diseases.
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Answer: The correct answer is decomposition creates unsteady levels of energy
Explanation: This answer has been confirmed correct.
There are no areas of concern related to energy output from decomposition.
Currently, new regulations control the use of pesticides and chemical fertilizers to reduce what?
Pesticides and fertilizers create water and air contamination and significant health consequences. Chemicals are regulated to reduce water contamination.
What are pesticides?Insecticides, fungicides, and nematicides are all examples of pesticides. It is essential to exercise population control over the unwanted organisms and insects that cause severe damage to the crops. On the other hand, pesticides can never be used in excess, as this would have a negative impact on living things.
Fertilizers are added to the soil in order to improve its fertility and thus the development of plants. In addition, they contain hazardous substances.
Both insecticides and fertilizers are known to include compounds that are potentially harmful. These chemicals almost certainly will lead to the contamination of water and air, in addition to causing health problems for the organisms in the surrounding area.
Contamination of water is a critical problem that has been on everyone's minds for a considerable amount of time. It is possible to lessen the amount of water contamination by lowering the amount of pesticides and fertilizers that are used.
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Hello, need help pls
Answer:
B. cuticle
Explanation:
The outside surface of epidermis is covered in a waxy coat called cuticle. This cover prevents the loss of water.
I am the Earth.
Things with mass
are attracted to me
by the force of
Answer:
Gravity
Explanation:
Which length of waves are MOST harmful
to humans?
A. visible light
B. short waves like gamma rays and x-rays this answer
C. long waves like radio waves
D. Infrared light
Which of the following distinguishes the first step of waste disposal, no matter the system?
Responses
gather
use
transport
treat
Answer: it is gather
Explanation:
Answer: The correct answer is gather
Explanation: This answer has been confirmed correct.
The steps for waste disposal (in order) are; gathering, storing, treating, transporting, and using.
Choose one of the three light technologies (fiber optics, lasers, and holograms), discussed in this lesson, and research it. Write a one- or two-page report. You could include more details about how the technology works, a particular use for the technology, or how it was discovered.
The topic of discussion is Laser.
What is a Laser?This is referred to as a device which has the ability to emit light through the process known as optical amplification. This feature is based on the stimulated emission of electromagnetic radiation and was discovered by Theodore Maiman.
He formed the basis of the creation of the first working laser through his work in which he shone a high-power flash lamp on a ruby rod with silver-coated surfaces. This device functions by stimulating atoms such that light is emitted and amplifies it thereby forming a narrow beam of radiation.
This is used to perform different types of surgeries in the healthcare system and it is also used to weld and cut materials which makes it a very important tool in different fields.
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13. The Law of Conservation of Mass states that matter cannot be created or destroyed
but transferred. This law was proven by the scientist Antoine Lavoisier, who heated
various substances and documented quantitative relationships. His observations proved
that the mass of the reactants is equal to the mass of the product in a chemical reaction.
Justify (give good reason) why Lavoisier's conclusions were considered a law instead of a
theory,
A. Lavoisier attempted to explain the results of his experiments.
B. Lavoisier provided sufficient empirical evidence to support his claim..
Lavoisier provided an explanation of an observed phenomena in nature.
D. Lavoisier applied the results of one experiment to explain a wide variety of
circumstances.
Lavoisier's conclusions were considered a law instead of a theory, because Lavoisier provided sufficient empirical evidence to support his claim
What is Lavoisier law ?In his tests, Lavoisier tried to show that his theory according to which matter is never generated nor destroyed in chemical reactions was true.
The knowledge of finance, biology, chemistry, and economics that Antoine Lavoisier possessed was well known. He recognised oxygen and articulated the law of conservation of mass in 1778. He detected hydrogen, developed the metric system, and changed element nomenclature in 1783.He rightly inferred that water wasn't an element but rather a combination of oxygen and combustible air, or hydrogen as it is today known. Lavoisier used the breakdown of water into oxygen and combustible air to prove his point.Learn more about Lavoisier law here:
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which type of human activity increases the amount of nitrogen in bodies of water
What important function can elodea cells perform that onion cells cannot?'
Elodea cells is capable of photosynthesis, while onion cells cannot
difference between elodea cells and onion cellsElodea cells and the plant itself serve as producers in natural settings because they are photosynthetic plants. Plants use light energy to transform carbon dioxide and water into sugars and oxygen through a process known as photosynthesis. It is the primary pathway for energy to enter an ecosystem.
Elodea cells photosynthesize because they develop in sunlight and are frequently categorized as waterweeds.
Onions cells, on the other hand, grow below the surface, therefore their cells cannot photosynthesize. Additionally, elodea cells have a vacuole that is filled with cell sap, a fluid that is mostly composed of water.
Conclusively, Elodea cells are structurally distinct from onion cells. Elodea cells are arranged in two layers, one of which is long and narrow and the other of which is short and wide. The cells of an onion are bigger and arranged in a single layer.
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Critical Thinking and Applications
1. The brother of a woman's father has hemophilia. Her father does not have
hemophilia, but she is concerned that her son might. Could she have
passed the allele for hemophilia to her son? Explain.
No she have passed the allele for hemophilia to her son
Hemophilia is caused by a mutation or change and in one of the genes that provides instruction for making the clotting factor proteins needed to form a blood clot and this change or mutation can prevent the clotting protein from working properly or to n=be missing altogether and these genes are located on the X chromosomes and the symptoms are
Unexplained and excessive bleeding from cuts and injuries or after surgery or dental workmany large or deep bruisesunusual bleeding after vaccinationpain and swelling or tightness in your jointsAnd if mother is heterozygotes for hemophilia and the father does not have so each son or daughters has an 1 in 2 chances of getting hemophilia and here in this case the brother of a woman's father has hemophilia her father does not have hemophilia, but she is concerned that her son might so the son doesn't have hemophilia because her father does not have hemophilia her uncle has hemophilia so she doesn't passed the allele for hemophilia to her son
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The genetic code is carried by the_____ molecule in most organisms
Answer:
The DNA molecule.
Explanation:
Based on its anatomy, infer which animal requires more energy: an Earthworm or a Salamander? Justify your answer.
Based on its anatomy, the animal that requires more energy is the Salamander. This is because it has a more complex anatomy and physiological structure.
Why do living organisms require energy?Living organisms require energy because they have to perform metabolic activities for proper and ideal survival of organisms. Such organisms use numerous strategies in order to accomplish the task.
An earthworm delivers energy from the environment more easily than compared to salamanders. This is because they extract food energy from decaying organic matter like plants and animals that have died.
On the other hand, Salamanders deliver energy by consuming small insects and other tiny living entities. It uses a mechanism more similar to human beings.
Therefore, the animal that requires more energy is the Salamander. This is because it has a more complex anatomy and physiological structure.
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2) Jessica and Maria are both making slime with different recipes. Jessica’s recipe calls for \large 1\frac{1}{2} cups of flour and Maria’s recipe calls for \frac{2}{3} cups of flour. How many cups of flour will they need in order to make both of their batches of slime?
With the help of fraction addition it is found that 13/6 cups of flour will be needed to make both of Jessica and Maria's batches of slime.
How are fractions added?
There are three easy steps to add fractions:
Step 1: First, ensure that the denominators (bottom numbers) are the same. If the denominators are not same take their LCM to make the denominators same.
Step 2: Add the higher numbers (the numerators), then multiply the result by the denominator.
Step 3: Simplify the fraction.
Amount of flour required in Jessica's recipe = 1 and 1/2 cups (mixed fraction) = 3/2 cups Amount of flour required in Maria's recipe = 2/3 cups.
Here the denominators of the fractions 3/2 and 2/3 are not same, therefore we need to find the LCM (lowest common factor) of 2 and 3 in order to make the denominators same for addition. The LCM of 2 and 3 is 6.= 3/2 + 2/3 = 9/6 + 4/6 = 13/6
Thus 13/6 cups of flour are needed to make both of their batches of slime
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PLEASE HELP WILL GIVE BRAINLIEST
What two abiotic factors must be present in order for gypsum to form
The two abiotic factors that must be present in order for gypsum to form are that they have essential effects on dessert and the environment. In general, gypsum is made of many abiotic components. Abiotic components such as temperate deserts, and subtropical deserts.
One type of saline soil is formed by Gypsum. Gypsum is a soft, chalky mineral composed of calcium sulfate [tex]CaSO_{4}[/tex] and water [tex]H_{2} O[/tex]. Here spatial variability means it maintains the even layer of the soil its decomposition and can develop the soil moisture. Gypsum is a nonclastic rock and transparent mineral. Deserts can be categorized by their low mean rainfall, even though it is just as essential to calculate the temporal and spatial variability in yearly rainfall. Gypsum is made up of oxygen [tex]O_{2}[/tex], sulfur S, calcium Ca, and water [tex]H_{2} O[/tex].
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In tomatoes, red fruit (R) is dominant to yellow fruit (r). Cross a homozygous dominant fruit with a heterozygous fruit. What percentage will the offspring have yellow fruit?
The percentage of offspring that will have yellow fruit if a homozygous dominant (RR) fruit is crossed with a heterozygous (Rr) fruit is 0%.
What is a punnet square?A punnet square is the graphical representation used to determine the probability of an offspring expressing a particular genotype.
According to this question, in tomato plants, red fruit (R) is said to be dominant to yellow fruit (r). This means that the homozygous dominant genotype will be RR while the heterozygous fruit will have a genotype of Rr.
Hence, if a cross between RR (red) × Rr (red) occurs, the following offsprings will be produced:
RRRRRrRrBased on the above genotype of the offsprings, it can be observed that none of them have a yellow fruit phenotype, hence, the percentage will be 0%.
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look at the arrows pointing towards atmospheric CO2. what are two major sources of atmospheric carbon?
The two major sources of atmospheric carbon are the burning of fossil fuels and respiration by living organisms.
Sources of atmospheric carbonCarbon exists in the atmosphere mostly as carbon dioxide and carbon monoxide.
Atmospheric carbon dioxide sources include but are not limited to the burning of fossil fuels, oil, or natural gas, respiration by living organisms, volcanic activities, deforestation, mining, and so on.
The sources of atmospheric carbon monoxide include but are not limited to the burning of fossil fuels in engines, automobile vehicles, and other forms of engines that utilize fossil fuels for operation.
Carbon dioxide happens to be a major contributor to the warming of the planet. In other words, carbon dioxide is a major member of the greenhouse gases whose increased concentration in the atmosphere has been the cause of global warming and climate change that has been plaguing mankind.
Carbon monoxide, on the other hand, is poisonous to living organisms above a certain concentration threshold.
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Calculate allele frequencies in 5th generation. Record in Lab Data
Calculate genotype frequencies and number of moths in 5th generation. Record in Lab Data
Allelic frequencies ⇒ q = 0.9, p = 0.1. Genotypic frequencies ⇒ q² = 0.81, 2pq = 0.18, p² = 0.01. Number of individuals with each genotype ⇒ homozygous recessive = 850.5 individuals. Heterozygous = 189 individuals. Homozygous dominant = 10.5 individuals.
To answer this question, we will assume this moth population is in Hardy-Weinberg equilibrium.
What is the Hardy-Weinber equilibrium?
Hardy-Weinberg equilibrium is a theory that proposes that when populations are in equilibrium they are not evolving. And if populations are not evolving, their allelic and genotypic frequencies remain the same generation after generation.
Assuming diallelic genes code for a particular feature,
Allelic frequency
f(X) ⇒ p ⇒ frequency of the dominant allelef(x) ⇒ q ⇒ frequency of the recessive alleleGenotypic frequencies
F(XX) ⇒ p² ⇒ homozygous dominant frequencyF(Xx) ⇒ 2pq ⇒ heterozygous frequencyF(xx) ⇒ q² ⇒ homozygous recessive frequencyIn populations that are in Hardy-Weinberg equilibrium, the addition of allelic and genotypic frequencies will always equal 1.
p + q = 1p² + 2pq + q² = 1Now, we will use this framework to get the allelic and genotypic frequencies of the 5th generation.
We know that,
1000 moths were released in a forest (N = 1000). 250 were white (Typica), and 750 were black (Carbonaria).A diallelic gene codes for color. The dominant allele -D- codes for black (carbonaria), and the recessive allele -d- codes for white (Typica).Once released, these individuals produced five new generations, G1, G2, G3, G4, G5.G5 is composed of 851 white individuals (typica) and 199 dark individuals (carbonaria). The total number of individuals is 199 + 851 = 1050.1) Phenotype frequencies
Now that we have the number of individuals expressing each color and the total number of individuals, we can get the phenotypic frequencies.
To calculate them we just need to divide the number of individuals with each phenotype by the total number of individuals in this generation. So,
Total number of individuals in G5 → 1050White = Typica = 851 individualsBlack = Carbonaria = 199 individuals⇒ F(Typica) = 851 / 1050 = 0.81
⇒ F(Carbonaria) = 199 / 1050 = 0.189 ≅ 0.19
Notice that these frequencies were already given in the Phenotype Frequency table.
2) Allelic Frequencies
Now, we will use the phenotypic frequencies to get the allelic frequencies.
Carbonaria (black) is the dominant phenotype, so it includes homozygous dominant individuals (DD) and heterozygous individuals (Dd). We can not get the allelic frequencies from this data.
So, to get the allelic frequencies we will use the recessive phenotypic frequency because it only includes homozygous recessive individuals, dd.
Homozygous recessive Gentoypic frequency = Recessive Phenotypic frequencyGenotypic frequency → F(dd) → Represented as q²F(Typica) = F(dd) = q² = 0.81Recessive allele → dRecessive allelic frequency → f(d) → Represented as qf(d) = q = ??
q² = 0.81
q = √ 0.81
q = 0.9
0.9 is the recessive allelic frequency.
With this data we will calculate the dominant allelic frequency. To do this, we will clear the following formula,
p + q = 1
p + 0.9 = 1
p = 1 - 0.9
p = 0.1
So, now we also know that
⇒ f(D) = p = 0.1
⇒ f(d) = q = 0.9
3) Genotypic Frequencies
Now, we need to get the genotypic frequencies, F(xx)
⇒ F(DD) = p² = 0.1² = 0.01
⇒ F(Dd) = 2pq = 2 x 0.9 x 0.1 = 0.18
⇒ F(dd) = q² = 0.9² = 0.81
4) Number of individuals
Finally, we need to tell the number of individuals with each genotype. We just need to multiply each frequency by the total number of individuals in G5.
F(DD) = p² = 0.01F(Dd) = 2pq = 0.18F(dd) = q² = 0.81Total number of individuals = 1050
⇒ DD Black -Carbonaria- individuals → 0.01 x 1050 = 10.5
⇒ Dd Black -Carbonaria- individuals → 0.18 x 1050 = 189
⇒ dd White -Typica- individuals → 0.81 x 1050 = 850.5
From this results, we can conclude that the moths population is not in H-W equilibrium, because their allelic and genotypic frequencies changed through generations.
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