Answers
Example: The three hydrogen isotopes are protium, deuterium, and tritium.
The isotopes of carbon, nitrogen, and oxygen are not examples.
What distinguishes isotopes?An isotope can be recognized by its mass, which is made up of all of its protons and neutrons. There are two ways to express isotopes. They both use the equation mass = (number of protons) + (number of neutrons).
Why are isotopes employed?There are several uses for radioactive isotopes. In medicine, cobalt-60 is frequently used as a radiation source, for example, to stop the growth of cancer. Radioactive isotopes are utilized as tracers for both metabolic process research and diagnostic purposes.
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Related Questions
Will give brainlist
The temperature of a substance changes from 120 C to 35 C. Which of the following is true?
The Kinetic Energy of the particles did not change.
The particles of the substance resulted in a high Kinetic Energy.
The particles of the substance initially had high Kinetic Energy.
Answers
The particles of the substance initially had high Kinetic Energy.
Does the kinetic energy of a particle change as the temperature changes?Gas particles move quickly in all directions and regularly collide with one another and the container's side. The particles gather kinetic energy and accelerate as the temperature rises. The particles' real average speed is influenced by their mass and temperature.
In liquids, particles are quite close together and move with random motion throughout the container. Due to the closer proximity of the particles, collisions between them happen more frequently than in gases even if particles are moving quickly in all directions.
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explain how capillaries are adapted for their function
Answers
The capillaries are adapted to their functions because their walls are just a cell thick making it possible for exchange to occur.
What is a capillary?A capillary is defined as the type of blood vessels that is found all over the body which is the smallest type of blood that allows the transport of blood, nutrients and oxygen to cells in organs and body systems.
The physiological structure of the capillaries helps in the adaptation of their functions because they are just a cell thick which is not so for veins and arteries of the vascular system.
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1. Marco's little brother is watching a TV program about the gene that causes the genetic disease hemophilia. People with this disease cannot make a protein that is needed for blood to clot. After a few minutes, he turns to Marco and asks, "what exactly is a gene, anyway?"
Which of the following BEST describes a gene?
A. A gene is a random change to an organism's DNA.
B. A gene is a structure in a cell that contains the cell's chromosomes.
C. A gene is made of DNA and contains the instructions for building proteins.
D. A gene is a protein that makes up an organism's structure and helps it function.
Answers
A gene can be described as being made up of DNA and it contains the instructions which are required for the building of the proteins.
The correct option is option C.
Genes are basically considered as the the functional units of heredity as they are basically composed of DNA, which is the nucleic acid responsible of the transmission of information from one generation to the other generation.
The chromosomes which are present in our body are basically made up of DNA which contain a number of genes. Each of the gene basically comprises of certain set of instructions which are required in order to perform a particular function or codes for some proteins.
Hence, the correct option is option C.
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What gametes are produced by the following organisms:_______.
a. Genotype YyRr, if Y and R are on different chromosomes
b. Genotype YyRr, if dominant Y and R are on the same chromosome, no crossing over
c. Genotype YyRr, if dominant Y and recessive r are on the same chromosome, no crossing over
d. Genotype YyRr, if dominant Y and R are on the same chromosome, 50% crossing over
Answers
Answer:
The correct answer would be -
1- YR, Yr, yR and yr.
2. Yr, yR
3. YR, yr
4. YR, Yr, yR & yr
Explanation:
A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.
The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.
1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.
2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.
3). if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.
4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.
Can you answer this question for me
Answers
If the emission spectrum of a star is redshifted, it indicates that the star is moving away from Earth, while if it is blueshifted, it indicates that the star is moving towards Earth.
Which elements are stars made of?Stars are made up of a combination of different elements, but the most abundant elements found in stars are hydrogen and helium. Hydrogen makes up about 74% of the mass of the Sun, while helium makes up about 24%.
The remaining 2% of the Sun's mass is composed of heavier elements such as oxygen, carbon, neon, iron, and others. The exact composition of a star depends on its mass, age, and evolutionary history.
The emission spectrum of a star can be redshifted or blueshifted depending on the motion of the star relative to the observer (Earth).
If the star is moving away from Earth, the light waves emitted by the star will be stretched out, which causes the wavelength of the light to appear longer than expected. This shift towards the red end of the spectrum is known as redshift.
Conversely, if the star is moving towards Earth, the light waves emitted by the star will be compressed, which causes the wavelength of the light to appear shorter than expected. This shift towards the blue end of the spectrum is known as blueshift.
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What’s a Newton ?????
Answers
Answer:
A Newton is a unity for representate the force applicated for move an object in a problem of physics. It depends on mass and aceleration or speed.
A Newton equivaluates:
1 N = 1 kg × m/s^2
Bruce Wallace (1963) established a laboratory population in which the recessive allele lt was at a frequency of 0.5. He propagated the population for 10 generations, and determined the frequency of lt each generation.
a. True
b. False
Answers
Answer:
a. True
Explanation:
Bruce Wallace was a professor emeritus of genetics who performed many population studies. He worked in 1958 at the University of Cornell as a professor of genetics. In 1963, he performed a population study wherein the recessive allele It was at a frequency of 0.5. The population was propagated for 10 generations and the frequency of It for each generation was determined.
The result of this study showed that lt/lt died without reproducing, whereas, individuals with genotype +/+ were normal.
state the general name for plants that live in and are adapted for dry conditions
Answers
What happens if sewage, toxins or fuel are absorbed into the ground and contaminate the groundwater?
A) The runoff will wash it away
B) It can eventually contaminate the watershed
C) It will be absorbed by the earth and disappear
NEED HELP ASAPPPP
Answers
Answer: the runoff will wash it away
Explanation:
I'm not sure but at least I tried :)
Answer:
The answer is
*It can eventually contaminate the watershed*
Explanation:
I did the test
iodophores are mixture of
Answers
Answer:
Iodophores are mixture of iodine and surface active agents
Answer:
idophores are mixture of iodine and aldehydes
Milk or cereal first
Answers
Answer:
cereal
is first
11. Which type of landform is created by deposition?
A. a valley
B. a glacier
C. a sandbar
Answers
Answer:
a sandbar
Explanation:
valley is plain around hills so it cant be created by deposition i have slight confusion in glacier but i think it is also not formed by deposition
Difference of Simple life cycle and complex life cycle
Similarities of Simple life cycle and complex life cycle
Answers
Answer: they both not smart
Explanation:
(just like me)
Answer:
a simple one will last longer and will be enjoyable
a complex one will have many hardships and a lot of stress
Explanation:
Academic Essay Write an academic essay on the pedagogy of Natural Sciences based on the following criteria: (a) the nature of science (word count: 150-250 words)
Answers
A mass extinction event is when over ____ of species die out in a relatively short
period of time.
A. 100%
B. 25%
C. 50%
D. 75%
Answers
A mass extinction event is when over 75% of species die out in a relatively short period of time. Therefore, the correct answer is: D. 75%
Earth's biodiversity declines rapidly and widely during an extinction event. A significant shift in the variety and abundance of multicellular organisms indicates such an event. It occurs when both the rate of speciation and the rate of extinction outpace the background rate.
A short period of geological time known as a mass extinction occurs when a significant portion of biodiversity, or distinct species—such as bacteria, fungi, plants, mammals, birds, reptiles, amphibians, fish, and invertebrates—die.
Impacts from comets and asteroid, widespread volcanism, climatic changes, rapid shifts in geography and ocean currents, or a combination of these can all lead to mass extinctions. The extinction of a single species is a characteristic of the flora and fauna of Earth.
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NEED ASAP!!!!! During the lumbering era, massive areas of forest were clear cut. Briefly describe how this would have affected Michigan's forest and aquatic food webs. You can include soils, water quality, nutrients, habitat, or any other ideas your gained from the video.
Answers
During the lumbering era, the extensive clear-cutting of forests in Michigan would have had significant impacts on both the forest and aquatic food webs in the region. Here are some ways in which these ecosystems would have been affected:
1. Loss of Habitat: Clear-cutting involves the removal of entire forest areas, resulting in the loss of habitat for numerous plant and animal species. Many organisms, including birds, mammals, and insects, rely on specific forest types for nesting, foraging, and shelter. The loss of these habitats would have disrupted the natural balance and diversity of species in Michigan's forests.2. Soil Erosion and Nutrient Depletion: Forests play a crucial role in preventing soil erosion and maintaining soil health. The removal of trees through clear-cutting would have exposed the soil to the elements, leading to increased erosion. This erosion could have resulted in the loss of fertile topsoil and nutrients, impacting the ability of remaining vegetation to grow and affecting the overall productivity of the forest ecosystem.3. Water Quality Impacts: Forests act as natural filters, purifying water by absorbing nutrients, sediments, and pollutants. With extensive clear-cutting, the loss of tree cover would have disrupted this filtration process, potentially leading to increased sediment runoff and nutrient loading in nearby water bodies. Consequently, water quality could have been negatively impacted, affecting aquatic organisms and their ability to thrive.4. Changes in Microclimates: Forests help regulate temperature, humidity, and wind patterns within their microclimates. The removal of large forested areas through clear-cutting would have altered these microclimates, resulting in changes to local weather patterns. This, in turn, could have affected the distribution and behavior of various species, including those that rely on specific temperature and moisture conditions for survival.5. Disruption of Food Chains: Clear-cutting would have caused a disruption in the food chains within both the forest and aquatic ecosystems. Many organisms depend on specific plant species for food, and when these plants are removed, it can lead to a cascade of impacts throughout the food web. For example, herbivores may experience a decrease in food availability, which could subsequently impact predators and other organisms higher up the food chain.Overall, the massive clear-cutting during the lumbering era in Michigan would have had far-reaching effects on the forest and aquatic food webs. The loss of habitat, soil erosion, water quality impacts, changes in microclimates, and disruption of food chains all contribute to the complex ecological consequences of this historical activity.
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2 Mention three (3) plant characteristics of euglena and chlamydomonas
Answers
Answer:
Explanation:
Euglena is an organism sharing both characteristics of plants and animals. Plants Characteristics of Euglena: It has chlorophyl
Mark this and return
How is energy related to the change of state
represented by the model?
O Atoms gain energy as a gas changes to a solid.
Atoms gain energy as a gas changes to a liquid.
Atoms lose energy as a gas changes to a solid.
Atoms lose energy as a gas changes to a liquid.
Answers
The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.
What is Atoms?A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.
The atoms in this process move from a higher-energy state to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.
Therefore the correct option is d.
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In prokaryotes, transcription and translation can happen simultaneously because
a. DNA and mitochondria are both located in the nucleus
b. DNA and ribosomes are both located in the nucleus
c. DNA and mitochondria are both located in the cytoplasm
d. DNA and ribosomes are both located in the cytoplasm
Answers
In prokaryotes, transcription and translation can happen simultaneously because DNA and ribosomes are both located in the nucleus. Therefore, option B is correct.
The ribosomes are responsible for protein synthesis. They are also found in the cytoplasm of prokaryotic cells. The ribosomes read the mRNA produced during transcription and directly synthesize proteins using the information encoded in the mRNA.
The absence of a nuclear membrane in prokaryotes allows for the coupling of transcription and translation to occur in close proximity in the cytoplasm.
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Bacteria, viruses, protists, parasites, and fungi can all cause disease and can be referred to as ______. antibodies macrophages white blood cells pathogens
Answers
Answer:
according to my googling skills,pathogens
1 What does the codon sequence on the mRNA strand determine?
A The gene sequence of the DNA
B The amino acid sequence of the polypeptide
C The codon that is signaled
D The signaling sequence
2 What portion of the DNA is also known as a gene?
A The coding sections
B The non-coding sections
C The mRNA strand
D The polypeptide sequence
Answers
1. The correct answer is B.
2. The correct answer is A.
The codon sequence on the mRNA strand determines the amino acid sequence of the polypeptide.
The coding section is the portion of the DNA that is also known as a gene. Genes are the functional units of DNA that provide the instructions for making proteins. They are composed of coding cells, also known as exons, that contain the information needed to build the polypeptide, and non-coding sections, also known as introns, that do not.
The codon sequence on the mRNA strand is translated by the ribosome during protein synthesis. Each codon, which is a sequence of three nucleotides, corresponds to a specific amino acid. The ribosome reads the codon sequence on the mRNA strand and adds the corresponding amino acids to the growing polypeptide chain. This process is called translation.
In DNA, genetic information is encoded in the sequence of nucleotides, which are the building blocks of DNA. Genes are specific segments of DNA that contain the instructions for making a specific protein. These instructions are encoded in the sequence of nucleotides within the coding sections of the DNA, also known as exons. The non-coding sections, also known as introns, do not contain instructions for making proteins, but they play important roles in the regulation of gene expression.
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Although the North Pole is tilted toward the Sun in the summer, its average temperature during that time is 0°C, that is very cold! How can you explain this?
Answers
North America is tilted toward the Sun during the summer months, this explains the reason that average summer temperatures are higher than winter temperatures in North America.
Latitude, height, distance from the sea, and ocean currents are the four unavoidable factors that affect temperature. Latitude is the most crucial aspect since the amount of solar radiation varies according to latitude.
The Earth's average yearly temperature, which displays a generally progressive temperature gradient from the equatorial to the polar regions. The most solar radiation is reflected off of the Equator.
Temperatures of the air and water are principally influenced by how much sunlight is received by the Earth's surface and how much heat is reflected back into space by greenhouse gases.
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The nose plays many important roles in the conduction of air into the lungs. Air entering the nose from the body’s exterior is very different from the air within the body and lungs. All BUT ONE describes how incoming air is changed by the structure of the nose and nasal passages.
A) As air passes over the mucous membranes, it is warmed and humidified.
B) The olfactory epithelium contain neurons, which conduct sensory signals to the brain.
C) Hairs and mucus on the interior of the nose also catch any solid debris before it can enter the lungs.
D) The convoluted inner structure of the nose increases the surface area of the respiratory tract and forces air to contact the mucous membranes lining the nasal cavity.
Answers
C) Hairs and mucus on the interior of the nose also catch any solid debris before it can enter the lungs.
How can communities limit earthquake damage?
O A. Design structures that can withstand stress.
O B. Install large glass mirrors throughout.
O C. Hang fragile items on the walls.
O D. Ignore expensive building codes.
SUBMIT
Answers
Glass mirrors, fragile items, and ignoring building codes are all dangerous.
Which of the following best explains how higher concentrations of nitrogen and phosphorus contribute to eutrophication?
Answers
Answer:
See the answer below
Explanation:
It seems that you forgot to include the options for the question.
Nevertheless, one of the best explanations for how higher concentrations of nitrogen and phosphorus contribute to eutrophication is the fact that after light, both nutrients represent the most important limiting factor for algal growth. The overabundance of these two nutrients leads to the stimulation of the growth of various algal species present in the ecosystem, eventually causing what is referred to as algal bloom.
Apart from constituting a nuisance to waterways, the bloom of algae causes a host of problems to the environment which include the blockage of sunlight from getting to water bodies, the release of toxins into water by algal species, hypoxia of water bodies, and eventual death of aquatic species.
The number of organisms that an area of land can sustain over a long period time is known as
Answers
Answer:
Carrying Capacity
Explanation:
40 point just answer it
Which type of reproduction involves the passing of characteristics to offspring? A. only sexual
B. only asexual
C. both sexual and asexual
D. neither sexual or asexual
Answers
Answer:
C. both sexual and asexual
Explanation:
In both cases, the parent(s) of the offspring pass down characteristics. Asexual reproduction makes a carbon copy of the parent so they would obviously have the parent's characteristics. Sexual reproduction passes down characteristics of both parents to the offspring.
What process is the foundation of almost all food webs?
A.Binary fission
B.Mitosis
C.Photosynthesis
D.Fermentation
Answers
Answer:
C. Photosynthesis
Explanation:
The process of almost all food webs is Photosynthesis
C, photosynthesis. The producers at the bottom of the food chain get their energy from the sun. This process is called photosynthesis.
Some years ago, before crude oil prices became an economic concern and an international political issue, a biologist proposed a curious-sounding plan. He suggested that a portion of our crude oil supplies be converted directly into edible food, instead of distilling it to gasoline for the typical farming methods for raising food.
Before you become nauseated at the idea, you should know that this conversion has been done on a trial basis. Making edible, non-toxic food from petroleum is feasible. Also, considering that the components of fossil fuels were once ordinary plants and animals in an ordinary food chain, maybe there is some logic in his plan. What does crude oil amount to, anyway, but dinosaur fat? (No, really it is primarily formed from microscopic organisms.)
It might be the right time to form a new corporation and market a new product. What shall we call it…”DinoSnack,” maybe? With interest in dinosaurs as high as it is, how can we go wrong?
Your task is to evaluate this suggestion, allowing for both pro and con, the positive and the negative aspects of it. Surely there will be economic and political considerations, but concentrate especially on the biological, ecological factors.
OK, this sounds like a winner, because…
(OR)
No, it does not appeal to me, because…
Pease help its due soon!!
Answers
Explanation:
DinoSnack,” maybe? With interest in dinosaurs as high as it is, how can we go wrong?
Your task is to evaluate this suggestion, allowing for both pro and con, the positive and the negative aspects of it. Surely there will be economic and political considerations, but concentrate especially on the biological, ecological
Answer:
this is so good!
Explanation:
Jake has become very anxious ever since he started taking harder classes in his major.
The university's counselor diagnosed him with an anxiety disorder. Compare and contrast how the behavioral, humanistic, and cognitive approaches would view the origins and treatment of Jake's anxiety. Then, describe how psychologists view each of
the three approaches today."
Answers
The behavioral, humanistic, and cognitive approaches provide different perspectives on the origins and treatment of Jake's anxiety.
The behavioral approach would view Jake's anxiety as a learned response that has been reinforced over time. They might suggest that Jake's anxiety is a result of negative experiences or associations with his academic performance, leading to increased anxiety symptoms. Treatment would focus on identifying and modifying maladaptive behaviors through techniques such as exposure therapy and behavior modification.
The humanistic approach would emphasize Jake's self-actualization and personal growth. They might view his anxiety as a result of a discrepancy between his self-concept and the challenges he is facing in his major.
Treatment would involve providing a supportive and empathetic environment where Jake can explore his feelings and values, with the goal of helping him align his personal goals with his academic pursuits.
The cognitive approach would focus on Jake's thoughts and beliefs about his academic performance. They would suggest that his anxiety stems from negative and distorted thinking patterns, such as excessive self-criticism or catastrophic thinking.
Treatment would involve cognitive restructuring, helping Jake identify and challenge irrational thoughts, and developing more adaptive and realistic thinking patterns.
In contemporary psychology, these approaches are not seen as mutually exclusive, but rather complementary. Psychologists recognize that a multidimensional approach, integrating elements from different perspectives, can provide a more comprehensive understanding of psychological issues.
Treatment approaches often combine techniques from various approaches to address the unique needs of each individual, emphasizing a holistic and personalized approach to mental health.
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