Answer:
Tung oil is made from pressed seeds from the nut of the tung tree. The tung tree, native to China, is named for its heart-shaped leaves because “tung” is Chinese for “heart.” In the 14th century, Chinese merchants were noted for using tung oil to waterproof and protect wooden ships from the eroding powers of the sea. There are even mentions of tung oil appearing in the writings of Confucius in around 400 B.C. For these reasons, it is also sometimes referred to as “China wood oil.
Explanation:
To extract oil from Tung tree seeds, the seeds are either pressed or crushed, or, for more efficiency, a solvent like n-hexane is used. The solvent is then distilled off, leaving the Tung oil. Traditional methods might involve boiling and skimming the oil from the surface.
Initially, Tung fruit is harvested and the seeds inside are collected because the oil is contained within these seeds. The seeds might be dried and then crushed or pressed to release the oil. However, for higher efficiency, chemical solvents such as n-hexane can be used to extract the oil from the seed material. After extraction, the solvent is distilled off, leaving behind the Tung oil, which can then be further processed and purified.
which is a reason cells divide? for apex learning
A. To reproduce
B. To prevent tumor formation
C. To have a smaller surface area
D. To stop binary fission
plz help me
Answer:
A. To reproduce
Explanation:
Cells divide in two stages: Meiosis - haploid cell division [½ number of chromosomes], and Mitosis - diploid cell division [same number of chromosomes]. Their objective is to produce offspring, which means reproduce.
I am joyous to help. Anytime.
Cells divide for multiple reasons, including reproduction, preventing tumor formation, and increasing their surface area-to-volume ratio.
Explanation:The reason cells divide is:
To reproduce: Cell division allows for the production of new cells, enabling growth and development in multicellular organisms, as well as reproduction in single-celled organisms.To prevent tumor formation: Cell division is tightly regulated to ensure that cells do not divide uncontrollably and form tumors. When cells divide, they undergo a process called mitosis, which helps maintain proper cell growth and avoid tumor formation.To have a smaller surface area: In certain cases, cells divide to increase their surface area-to-volume ratio. This is important for efficient nutrient exchange and waste removal, as smaller cells have a larger surface area relative to their volume.Learn more about Cell Division here:https://brainly.com/question/29773280
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Global warming will increase temperatures through the northern United
States. What will most likely be the effect on wildlife in this region?
A. They will have more access to fresh water.
B. They will have more access to food.
C. They will die unless they are able to move to cooler areas.
D. They will be healthier in the warmer weather.
Answer: C
Explanation: C is the only negative effect of global warming. They must move to a different location or die.
The correct answer is C. They will die unless they are able to move to cooler areas.
Explanation:
The global warming phenomenon implies a long-term change in temperature all around the world. This change in temperature represents an important thread for ecosystems as biological processes and natural cycles are closely linked to temperatures. Indeed the rise in temperatures has caused changes in migrations, pollination, and availability of resources which leads to the extinction of species that cannot adapt to warmer climates. For example, in oceans higher temperatures had caused corals and some fish to die as they are adapted to only certain temperatures. Therefore, the most likely effect on wildlife due to global warming in the U.S. and other regions is that animals, plants and other organisms will die unless they move to cooler areas (Option C).
Which element is responsible for the color change in the benedicts test
Answer:
Copper (Cu2+)
Explanation:
Benedict's test is used to test for aldehydes and ketones. The cupric compound (Cu2+) from the Benedict's reagent reacts and is reduced by the aldehydes to the coprous compound (Cu+) forming a red color.
Which best describes how an organism’s niche is determined
Answer:
The answer is....
Explanation:
An organism's habitat and ability to reproduce determine its niche.
An organism's niche is determined by several factors, primarily its competition for resources, the features of its physical and geographic environment, and its unique nutritional and reproductive strategies.
Explanation:An organism's niche in an ecosystem is determined by several factors tied to both its unique characteristics and the properties of the environment. These factors range from the resources it consumes, to its interactions with other species, to the physical features of its habitat.
Firstly, competition for resources such as food, water, sunlight, and mineral nutrients plays a significant role in determining an organism's niche, due to the restrictions imposed by the principle of Competitive Exclusion. This principle asserts that two species cannot occupy the same niche in a habitat, implying that they can't compete for all the same resources and still coexist in the same community.
Moreover, the components of an organism's physical and geographic environment, such as the habitat's climate, topography, and available species, are also essential determinants of its niche. This is because they significantly impact which organisms can exist within a specific area.
Lastly, an organism's nutritional and reproductive strategies add to the determination of its niche. These strategies depend upon the type of organism, its nutritional requirements, and the type of habitat it inhabits.
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Stars emit different light types based on the:
A) Dust that surrounds them.
B) Elements that they absorb.
C) Their distance from the Sun.
D) Their distance from the Earth.
Answer:
Stars emit different light types based on the Elements that they absorb.- B)
Answer:
B) Elements that they absorb
Explanation:
Pinnae are found in.
(a) Frog (b) Gasialis
(c) Rabbit
(d) Crow
Answer:
Pinnae is the external part of the ear in humans and other mammals. So it's C Rabbit.
Explanation:
What is the main function of cellulose?
A. Produces trigylcerides
B. Component of cell walls
C. Energy storage
D. Water transfer
Answer:
B
Explanation:
cell walls Component
The number of bacteria in an experiment can be represented by f(x) = 4*,
where x represents the number of hours.
What is x when fx) = 64?
O
A. x = 3; In the 3rd hour there will be 64 bacteria.
. X = 16; In the 16th hour there will be 64 bacteria.
O
c. x = 60; In the 60th hour there will be 64 bacteria.
O
D. X= 4; In the 4th hour there will be 64 bacteria.
The number of bacteria is represented with a function,
[tex]f(x)=4^x[/tex]
The practise says [tex]f(x)=64[/tex] therefore,
[tex]64=4^x[/tex]
We can rewrite this,
[tex]4^x=4^3[/tex]
If bases are equal then exponents are too, from here the solution emerges,
[tex]\boxed{x=3}[/tex]
The answer is A.
Hope this helps.
r3t40
Answer:
The correct option is A.
Explanation:
The number of bacteria in an experiment can be represented by an exponential function
[tex]f(x)=4^x[/tex]
where, x represents the number of hours.
We need to find the value of x when f(x)=64.
Substitute f(x)=64 in the given function.
[tex]64=4^x[/tex]
It can be rewritten as
[tex]4^3=4^x[/tex]
On comparing both sides by get
[tex]3=x[/tex]
The value of x is 3.
Since f(3)=64 it means the population of bacteria is 64 in 3rd hour.
Therefore the correct option is A.
Approximately how many mutations occur naturally in DNA per 10,000 bases?
Answer:
Modern methods indicate that the mutation rate is roughly one mutation per 10,000 genes per generation.
Explanation:
Answer: Approximately 1 - 2.
Explanation: I actually learned this. This is a fact.
which of these practices does the most to decrease the amount of water needed to farm?
A-drip irrigation
B-crop rotation
C-cash crops
D-no-trill farming?
The practice that does the most to decrease the amount of water needed to farm is (A) drip irrigation.
What is Drip irrigation?Drip irrigation is a type of irrigation system that delivers water directly to the roots of plants, drop by drop, through a network of tubes and emitters.
This system uses water much more efficiently than traditional methods of irrigation, such as flood irrigation or sprinkler systems, because it delivers water precisely where it is needed and minimizes evaporation and runoff.
Crop rotation, cash crops, and no-till farming are also practices that can help to conserve water in agriculture, but they do not have as significant an impact on water use as drip irrigation.
Crop rotation involves planting different crops in a specific sequence to help maintain soil health and fertility, while cash crops are crops that are grown primarily for sale rather than for subsistence. No-till farming involves leaving the soil undisturbed between crops to help reduce erosion and conserve soil moisture.
Overall, while each of these practices can contribute to water conservation in agriculture, drip irrigation is the most effective in reducing the amount of water needed to farm.
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Homologous structures
A. always have the same function.
B. are found in organisms of the same species.
C. always have a different function.
D. are found in organisms of different species.
Answer: D is the correct answer!
Explanation:
Answer: D are found in organisms of different species.
Explanation:) edge 2022
Identify the types of mutations represented by the change in each DNA sequence.
how many base pairs would a DNA segment of length 1.36mm have?
Answer:
4.0 million
Explanation:
The average length of a base pair (bp) is 340 pm (340 × 10^-12 m)
Length of DNA = Number of bp × length of each bp
1.36 × 10^-3 m = bp × 340 × 10^-12 m
bp = (1.36 × 10^ -3)/(340 × 10^-12) = 4.0 × 10^6
The DNA segment would contain 4.0 million bp.
Hey scientist wonders what would happen if all the trees in the Amazon rainforest were cut down. Which of the following is the most ethical reasons for running a simulation rather than cutting down all the trees in the rainforest?
A. There would be no place to dispose of the trees once they were cut down
B. The natural world should be disturbed as little as possible in an experiment
C. Travel to and from the Amazon might be too expensive for a scientist
D. It might be too expensive to buy enough chainsaws for the experiment
Answer:
B. The natural world should be disturbed as little as possible in an experiment
Explanation:
In doing any type of experiment that includes the natural world, the best and most ethical way to do it is to make as little disturbance to it as possible. The reasons for this are many. One of them is that if the experiment creates big disturbance to the natural world, it will create lot of damage to it, with many species becoming endangered or extinct. Also, the natural world is needed, both for the humans and for having proper living conditions for the other organisms. The ethical part also plays big role, as to perform an experiment with the cost of harming millions of organisms is very cruel and irresponsible, plus there's not a single positive in it.
The natural world should be disturbed as little as possible in an experiment. The correct option is B.
The scientist respects the value of the natural environment and seeks to minimise any detrimental effects on the rainforest ecosystem by opting to conduct a simulation rather than actually felling the trees.
The results of experiments involving damaging activities may have long-lasting effects on ecosystem processes, indigenous groups' livelihoods, and biodiversity.
Giving the rainforest top priority is consistent with moral principles of environmental sustainability and conservation.
Thus, the correct option is B.
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How many miles are in half a light year
Answer:
2.939e+12 Basically 2.93 miles
Explanation:
If one light year equals 5.879e+12
then (.5) half of a light year equals 2.939e+12
What is a five carbon sugar
Answer:
The 5-carbon sugars ribose and deoxyribose are important components of nucleotides, and are found in RNA and DNA, respectively. The sugars found in nucleic acids are pentose sugars; a pentose sugar has five carbon atoms. A combination of a base and a sugar is called a nucleoside.Explanation:
A five carbon sugar is a monosaccharide that contains five carbon atoms and is found in nucleic acids. Examples include ribose and deoxyribose.
Explanation:A five carbon sugar is a monosaccharide that contains five carbon atoms in its structure. Two examples of five carbon sugars found in nucleic acids are ribose and deoxyribose. Both have a cyclic form with a hydroxyl group at the anomeric position. Five-carbon sugars, or pentoses, are crucial components of nucleic acids like DNA and RNA. Ribose and deoxyribose are common examples.
Their distinctive features include a five-carbon backbone, where each carbon is attached to a hydroxyl group. In RNA, the 2' carbon of ribose contains a hydroxyl group, distinguishing it from deoxyribose in DNA. The arrangement of these carbons and hydroxyl groups contributes to the unique structure and function of these essential building blocks in genetic materials.
Which of these provide endocrine functions for both males and females?
Choose 3 correct answers.
LH
FSH
Pituitary gland
Placenta
Testicles
Answer:
i think its pituitary gland
The hormones that are present in both males and females where the function of these provide function to both are :
LH
FSH
Pituitary gland
What is the full form of LH and FSH ?The full form of LH and FSH is leutinizing hormone and FSH is follicle stimulating hormone.
The hormones of LH and FSH are present in both males and females. In females it makes the run of the menstrual cycle where it plays a major role in ovulation that is egg laying on the 14th day of the cycle.
LH in males makes the testicles to release testosterone.
FSH continues the sperm production in males, in females it is involved in the egg production and growth of follicles.
Pituitary gland is responsible for the production of many other hormones as it is the master gland of the human body.
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How does an allele cause a trait in an organism?
O
A. The allele is a code to form a type of gene.
O
B. The allele is used during transcription to make DNA.
O
C. The allele is used by proteins to create chromosomes.
O
D. The allele causes a certain type of protein to form.
Answer:
D. The allele causes a certain type of protein to form.
An allele, a version of a gene, influences an organism's traits by coding for a specific protein. This protein is formed through a process of transcription and translation, resulting in a trait. Different alleles produce variations in proteins, contributing to different traits.
Explanation:An allele is a version of a gene. Every organism inherits two alleles for each gene, one from each parent. These alleles may be the same (homozygous) or different (heterozygous). The trait that an organism expresses depends on the protein that is made as a result of transcription and translation of the allele. The correct answer in the given options would be 'The allele causes a certain type of protein to form'.
The process begins with the transcription, where the DNA sequence of the allele is copied into mRNA. This mRNA is then translated into a chain of amino acids, which folds to form a protein. It is this protein that is responsible for the trait. Different alleles produce variations in the protein, which result in different traits.
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Speed is a complex skill that requires the communication of which systems to function?
Select all that apply.
skeletal system
circulatory system
respiratory system
muscular system
Speed requires the interaction of the muscular, skeletal, nervous, and circulatory systems to execute coordinated and efficient movement.
Speed is a complex skill that requires the coordination of multiple body systems to function effectively. Specifically, speed involves the muscular system and the skeletal system working together to produce movement. The nervous system plays a critical role by sending signals to muscles to contract and coordinate actions, and the circulatory system supports these functions by supplying oxygen and nutrients to muscles and removing waste products. While the respiratory system is not directly mentioned in the original answer choices, it is also critical to speed as it provides the oxygen necessary for muscle function. Therefore, the systems that must communicate for speed are:
Muscular systemSkeletal systemNervous systemCirculatory systemwhich of the following best describes a gene pool?
You have no choices however, A gene pool is defined as a sum total of all the genes present in an inter-breeding population at a specific time. It includes all the alleles of all the loci within the genes of a interbreeding population or species. The composition of the gene pool of a population can change with course of a time due to evolution
The best definition for a gene pool is (a) the sum of all genetic traits in a population's individuals at a given time, encompassing all alleles for every gene in the population.
The best definition for a gene pool is a. the sum of all genetic traits in a population's individuals at a given time. A gene pool consists of all the genetic information in the population. This includes all of the various alleles for every gene present in all individuals within the population. The diversity and frequency of these alleles characterize the population's genetic diversity. Within a population's gene pool, mutations can lead to new alleles, which may provide advantages or disadvantages to individuals in the population. Over time, these changes can drive the evolution of the population by natural selection, where beneficial traits become more common in the gene pool while detrimental ones may be weeded out.
The correct question is:
Which of the following best defines a gene pool?
a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population
HELP!! Seasonal variations in ocean temperatures can impact the populations of living organisms in the ocean. How would a phytoplankton population be affected by these changes?
Answer:
Increased sunlight and increased nutrients will increase phytoplankton populations
Explanation:
The phytoplankton is a producer. This means that it is able to produce its own sugars, or rather its own food, by using its environment. In order to do so, the phytoplankton performs the process of photosynthesis, and in order for this process to be performed, the phytoplankton needs sunlight. Increased sunlight will mean that the phytoplankton will be able to perform photosynthesis more frequently and more efficiently, which will result in increase of its population. Also, the nutrients play a role in the population of phytoplankton, as they provide crucial elements that are needed for the photosynthesis process, so the phytoplankton gets what it needs from them, so the more nutrients there are, the more phytoplankton there will be.
Select the best answer for the question. 8. According to the cladogram of primates shown, which key cultural feature was shared exclusively by only homo sapiens and Neanderthals? A. Burying dead/religious beliefs B. Artistic creation C. Tool building D. Walking upright
Answer:artistic creation
Explanation:
Answer:
A
Explanation:
Burying dead/religious beliefs is the key cultural feature that was shared exclusively by only Homo sapiens and Neanderthals.
Which statement best describes energy of an ecosystem?
The amount of energy entering an ecosystem from the Sun is equal to the amount lost as heat.
The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms.
The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
The amount of energy entering an ecosystem from the sun does not transfer from organism to organism.
Answer:
The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
Explanation:
An ecosystem is a basically a community in which several living organisms live together in a certain area and share food and other living resources.
When we talk about prime source of energy for any ecosystem it is considered to be the, Sun. Sun is the source of energy for all living organisms and the energy of sunlight is primarily used by green plants to prepare food through the process of photosynthesis. In this process sunlight is fixed into energy compounds like ATP. And once the green plants are eaten by other higher animals like goat, some of the energy is wasted as heat and other is transferred into the body of next organism. Then when the goat is eaten by higher animal like lion, some of the energy is wasted as heat and other is transferred into the body of next organism. This process goes on.
In this way, the energy from sun is transferred from herbivores like goat to carnivores like lion etc. Some energy is used by the higher organisms while the other is lost as heat during energy transfer process.
Therefore, mentioned option, "The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat" is correct option.
Answer:
The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
Explanation:
Which variable is being tested in this experiment?
sorry can't answer without more detail
Answer:
send us the details we can't answer if we don't know the experiment
What does it mean to say that cells are “specialized”?
Hope this helps !!!
Explanation:
A cell is the basic unit of life. However, there are many different types of specialized cells. This means they are modified by size, shape, or function according to their purpose. Specialized cells make up tissues, tissues make up organs, and organs make up the systems that work together to make up our bodies.
Which of the following best helps scientists determine the order in which a species evolved? (2 points)
Type of fossil
Geographic location of the fossil
Location of the fossil in Earth's layers
Species of the fossil
The location of the fossil in Earth's layers helps scientists determine the order in which a species evolved.
Explanation:The correct answer is Location of the fossil in Earth's layers. The study of fossils and their position in the rock layers, known as stratigraphy, can help scientists determine the relative age of different fossils and the order in which species evolved. By examining the layers of rock, scientists can identify the sequence of fossil species, with older fossils found in lower layers and more recent fossils found in higher layers.
The option that best helps scientists determine the order in which a species evolved is the location of the fossil in Earth's layers. This method is central to the field of stratigraphy, which studies the layers of sedimentary rock to establish a timeline for events. The principle of superposition is key in this field; it states that in undisturbed layers of rock, the oldest layers are at the bottom, and each subsequent layer is younger than the one beneath it. So, fossils found in deeper layers are typically older than those found in layers closer to the surface.
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Scientists can determine the order in which a species evolved by examining the type of fossil, the location of the fossil in Earth's layers, and the species of the fossil.
Explanation:The order in which a species evolved can be determined by examining the type of fossil, the location of the fossil in Earth's layers, and the species of the fossil.
When studying fossils, scientists can analyze the characteristics of the fossil to determine its age and compare it to other fossils to establish a sequence of evolutionary changes.
The location of the fossil in Earth's layers can also provide information about the relative ages of different species, as older fossils are usually found in deeper layers.
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How does natural selection lead to evolution? A. Every generation is a new species
B. Small changes add up over time
C. The fittest organism cannot reproduce
D. New species learned the behavior of old species
Answer:
B. Small changes add up over time
Explanation:
Evolution is a pretty slow process. Each successful member of a new generation receives small changes in their DNA that helped them to survive, whether it's an existing trait that happened to be more helpful or a mutation. Over time, these helpful traits gradually add up. Eventually, the original species has been completely replaced by a new, improved version, that can look significantly (take horses for example, the very first horses were about the size of rabbits and had individual toes instead of hooves. Over time, more beneficial traits added up, and the result is the horse we know today.) While the traits of the original species might have been the most beneficial to them, as environments and other factors change, the species must change with it to survive. You could compare this to computers. The update you downloaded today might be the best thing to protect your computer now, but that same update won't be nearly as effective a year from now.
I hope this helps!
The natural selection lead to evolution of new species where Small changes add up over time where the small changes that are being add on with the change in them and the type of situations that are present.
What is the theory of selection ?The theory of selection says that every organism who is fit to survive and able to adapt to the environment they are living on is selected by the nature.
The small changes in the structure, for example let us talk about the spinal cord where the structure was continuously being replaced by with the passing of time and later on it got correct, The example is totally illustrating the structure of spinal cord alteration with time.
The type of culture and the type of living style on is living in with the passing of time it would change as well when the time and values together get so valued such that the priorities change with time.
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Jesse has recently started using methamphetamines. Which of the following is he risking by taking this drug? Stroke, Blood pressure, Common Cold, or Constipation?
Final answer:
Methamphetamine use can increase blood pressure and pose risks to the cardiovascular system. It can also lead to addiction, psychosis, and changes in brain structure and function.
Explanation:
Methamphetamine use poses several risks to the health of an individual. One of the risks associated with taking this drug is an increase in blood pressure. Methamphetamine is a stimulant that can cause vasoconstriction, which narrows the blood vessels and leads to an increase in blood pressure. This can put strain on the cardiovascular system and increase the risk of heart-related issues, including stroke. It is important to note that methamphetamine use can also lead to other adverse effects such as addiction, psychosis, and changes in brain structure and function.
The diagram shows a cellular process in which a double-stranded molecule of nucleic acid gives rise to a single-stranded molecule of nucleic acid. Which best describes the process shown?
- RNA is translated into DNA.
- DNA is translated into RNA.
- RNA is transcribed into DNA.
- DNA is transcribed into RNA
Answer: dna transcripted into rna
Explanation: dna is double stranded and rna in single and transcribed has to do with rna while translated is with ribosomes
This process is called transcription and it involves the conversion of DNA into RNA using the enzyme RNA polymerase. Transcription happens in three steps: initiation, elongation, and termination.
Explanation:The process mentioned in the question, where a double-stranded molecule of nucleic acid gives rise to a single-stranded molecule of nucleic acid, is best described as: DNA is transcribed into RNA. In this biological process, known as transcription, the DNA serves as the template for synthesizing RNA. This happens in three steps: initiation, elongation, and termination. During initiation, the enzyme RNA polymerase binds to the DNA strand. In elongation, RNA polymerase moves along the DNA template strand, building the RNA molecule. Finally, in termination, the RNA polymerase reaches a sequence of DNA called the termination sequence, signaling the end of RNA synthesis.
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Please help me with this one question!!!!! Will MARK brainliest
Answer:
Explanation:
1. Professor
2. Environmental consultant
3. Aquarist
4. Marine Researcher.