Explanation:
chemical mutations are those chemical which change the DNA molecule in such an extent that it function and make different expressions of gene
tobacco is considered as chemical mutation
Sam was a 60-year-old man. As a result of picking up a heavy object, he fractured the radius and ulna of his right arm. X-rays indicated that he had severe osteoporosis. His blood calcium levels were above normal and the pathologist found cancer cells that produced a hormone-like substance. That substance was most likely
That substance was most likely parathyroid hormone.
What is a parathyroid hormone?It should be noted that the parathyroid hormone is the hormone that is released to control calcuim levels in the blood.
In this case, this is illustrated as the blood calcium levels were above normal and the pathologist found cancer cells that produced a hormone-like substance.
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PLESE HELP ILL GIVE BRAINLIEST!!!!! A student has an unique genetic disorder where they cannot create enough energy to move around. It turns out she is most likely born without enough of which organelle?
The nervous system and the muscle system respond to stimuli to produce motion. The movements of
muscles are mostly voluntary. Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the
.
The nervous system and the muscle system respond to stimuli to produce motion. The skeletal movements of muscles are mostly voluntary.
Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the spinal cord.
What are Skeletal muscles?Skeletal muscles may be defined as the muscles that fasten to your bones and authorize you to achieve a broad range of activities and operations.
Skeletal muscles control the direct movement of a person's will and are hence referred to as voluntary movement.
While the spinal cord is associated with both movements directly or indirectly. It is a prolonged, delicate tubelike network liable for holding incoming and outgoing messages through the brain to the rest body.
Therefore, it is well described above.
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Think about challenges related to marine science which are currently facing society. In coastal and inland communities alike, there might be challenges such as pollution, invasive species, or waste management. Communities also face public health issues, such as outbreaks of diseases, and ethical concerns surrounding science and technology. Communities turn to fellow citizens, scientists, engineers, and other professionals to solve these problems. Many times these problems are not clearly defined or easy to solve. They involve many variables and points of view. Your task is to analyze a global challenge related to marine science, and to specify qualitative and quantitative criteria and constraints for solutions that account for societal needs and wants.
Global challenges related to marine science are as follows:
1. Ocean acidification is a major issue that affects all of the world's ocean industries and has severe negative effects on the environment, society, and the economy. Coordinated government action is required to effectively address this issue.
What is impact of ocean acidification?Ocean acidification will affect the biological, biogeochemical, and ecological aspects of the oceans, and while the effects on the environment, the socio-ecological system, and human dimensions are all still not fully understood, they have the potential to have very dramatic effects. Numerous marine ecosystem services and goods may be impacted directly or indirectly. Industries that rely on these services from the Ocean are impacted.
2. Overfishing:
Overfishing poses a severe threat to the fish in our water, whether it's for the food industry or the aquarium sector. The Food and Agriculture Organization estimates that more than half of the species of marine fish have been totally or overexploited, despite the fact that many of them simply need to remain in the sea because they are not necessary for food security or because they cannot survive in captivity. We are killing entire ecosystems and the food chains that are necessary to keep them healthy by overfishing. Overfishing not only causes the extinction of entire species, but it also directly affects other species in the food chain.
3. Plastic
Between 1.15 and 2.41 million tons of plastic enter the ocean every single year. The Great Pacific Garbage Patch, which is a collection of rubbish in the Pacific Ocean is now three times the size of France. Animals can get tangled in the huge amount of plastic which litter the ocean, and the plastic smothers and destroys coral and sponges. Plastic bags are also often mistaken for food by sea turtles, and they either become trapped or eat the bag which clogs their digestive system. Plastic continuously breaks down resulting in little pieces of “micro-plastic” that are consumed by a variety of marine life, including several species that humans like to catch and eat.
solutions that account for societal needs and wants:
1. Cutting back on carbon emissions.
2. Reducing plastic usage.
3. Making sure the fish you consume is supplied sustainably and ethically.
4. Participating in beach cleanups.
5. Only purchase aquarium fish that were raised in captivity.
6. Supporting elected officials that favor a wholesome atmosphere
7. Contributing to environmental organizations that protect our oceans.
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how migrarion neither increase or decrease the population
Answer:
as more people come to life in ur country others leave to stay in other countries
How does each new cell formed by cell division differ from the mature cell?
OA. Each new cell has a smaller ratio of surface area to volume.
B. Each new cell has a larger ratio of surface area to volume.
O C. Each new cell has different information in its nucleus.
D. Each new cell has fewer chromosomes in its nucleus.
EASYYYYYYYY
a. Worldwide, what percentage of human water usage does industry account for?
b. What percentage in the US of human water usage does industry account for?
The percentage of human water usage that the industry account for is 19% while the percentage does industry account for in the US for human water usage is = 5%
What is human water usage?Human water usage is the water used by individuals for direct purposes such as bathing, drinking, and cooking.
The percentage of human water usage that the industry account for is 19% while the percentage does industry account for in the US for human water usage is = 5%
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Mitochondria and chloroplasts
have their own DNA but no
organelles.
Mitochondria and chloroplasts are MOST SIMILAR to which type of cell?
A. root cells
b amoeboid cells
C. prokaryotic cells
Answer:
C. prokaryotic cells
Definitions
The Mitochondrion is an organelle in the cytoplasm of cells that functions in energy production.
Chloroplast is usually defined as a plastic containing chlorophyll.
Chlorophyll is the green coloring matter of leaves and plants, essential to the production in a bluish-black form, C55H72MgN405 (chlorophyll a), and a dark-green form, C55H70MgN4O6 (chlorophyll b).
A root cell is one of the maestro cells in the human organic structure that has possible ability of turning into any of the more than the organic structure's 200 cell types.
Prokaryotes is any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
What are the similarities and differences between prokaryotes, mitochondria, and chloroplasts?Both mitochondria and heterotrophic prokaryotes, as well as chloroplasts and autotrophic prokaryotes, have a genetic structure (DNA with a circular double helix shape and the genes themselves), as well as comparable ribosome types. In reality, the endosymbiotic idea is based on these parallels.
which of the following is true regarding speciation and mechanisms of evolution?
Speciation is one of the driving processes of evolution and results in the formation of new species.
What is evolution?Evolution is the process by which new organisms are formed from existing organisms due to changes that result in increasing complexity of the organisms.
Speciation is the process by which new species are formed from existing species.
Therefore, it can be concluded that speciation is one of the driving processes of evolution.
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Land and ocean surfaces at the equator receive the greatest amounts of solar energy
because
1) the sun's rays strike at an angle.
2) convection is greater at the equator.
3) these is less rotation at the equator.
4) the sun's rays strike directly.
Answer:
the equator receives the most solid residential for unit area because sunlight arise almost parapendicular towards surface their
With ideal environmental factors, the reproduction rate of bacteria is...
With ideal environmental factors, bacteria are able to reproduce at a very rapid pace.
Bacterial reproductionBacteria reproduce mainly by a single cell dividing into two, given the right condition. In order words, they reproduce by binary fission.
When environmental conditions are optimum, a typical bacterial cell can divide every 4 to 20 minutes depending on the species.
The time can become longer with sub-optimal environmental conditions.
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A purple flower with a genotype PP is crossed with a white flower that has a genotype of op. What would the phenotype of the offspring be? You may need to use a punnet square to answer the question .
When a purple flower with a genotype PP is crossed with a white flower that has a genotype of pp. The phenotype of the offspring would be Purple (Pp).
What is Genotype?Genotype may be defined as the ultimate combination of the alleles of those genes which are selected for specific studies.
The phenotype of the offspring would be Purple (Pp). This is because the allele of the purple phenotype is dominant over the allele of the white phenotype. That is P > p.
The Punnett Square may be represented below:
Therefore, it is well described above.
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Internal membrane-bound compartments located in the cytoplasm of eukaryotic cells are called.
Internal membrane-bound compartments located in the cytoplasm of eukaryotic cells are called organelles.
What is a membrane-bound compartment within the cell?An organelle is a membrane-bound compartment or structure in a cell that serves a particular function.
In the less-stricter definition, an organelle directs to any cellular structure, whether it is membrane-bound or not, that has a special function.
Thus organelles are the answer.
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what is the likelihood of a cell firing determined by ?
The likelihood of a cell firing is typically determined by adding both the excitatory and inhibitory synaptic input.
What is a cell?A cell can be defined as the fundamental functional, structural and smallest unit of life, which is found within the body of an organism.
Generally, the likelihood of a cell firing is typically determined by adding both the excitatory and inhibitory synaptic input. Thus, the net sum of the excitatory and inhibitory synaptic input would determine whether or not a cell fires.
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Diffusion does not require any energy.
How does diffusion work?
A. Particles move from areas of higher concentration to
areas of lower concentration.
B. Molecules are moving AGAINST a concentration
gradient.
C. Heat is released making molecules move more quickly.
D. Cells only use energy to move substances across the
membrane.
A - Read below
Diffusion is simply particles spreading around. Think of it like spraying perfume in a room. Where the person sprayed the perfume would be a high concentration as there is a lot of that perfume there. However, on the other side of the room there would be little to no perfume. So the perfume spreads around until it is evenly distributed in the room.
A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which
type of limiting factor causes this?
density dependent
density independent
population dependent
population independent
Answer:
Density Independent
Explanation:
Density independent is the factor that will affect a population no matter its size. Temperature, natural disasters, and oxygen levels all influence this.
The correct term to describe the type of limiting factor that causes the destruction of both the small population of trees and the large population of birds in this scenario is "density-independent." Density-independent factors are environmental factors or events that affect populations regardless of their size or density.
What is density-independent?Density-independent factors are environmental factors or events that affect populations regardless of their size or density. These factors exert their influence on population dynamics independently of population density. Density-independent factors include natural disasters like earthquakes, floods, hurricanes, and forest fires, as well as extreme weather events, habitat destruction, pollution, and certain diseases.
In this case, the forest fire is an example of a density-independent factor because it can impact both the tree population and bird population regardless of their respective sizes or densities.
Therefore, the correct answer is "density-independent."
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The function of y is to transport ___ produced by plants during __ to other parts of plants.
Answer:
dissolved food substances,photosynthesis
Explanation:
Y is the phloem
Transportation occurs from the leaves to other parts of the plant
The following models show one large cell (A) and four small cells (B). 0 C A B Which of the following states why one of the models is better for moving more nutrients in and out of the cell? © A. B is better because it has more surface area. © B. A is better because it has more surface area. O C. A is better because it has less volume O D. B is better because it has less volume
B is one of the models that are better for moving more nutrients in and out of the cell because B has smaller cells but more surface area than A. Thus, the correct option is A.
How do nutrients move in and out of the cell?Nutrients are entranced throughout cells, tissues, and even your whole body through the blood via capillaries. Tiny blood vessels that unite arteries to the veins also facilitate the transportation of nutrients in and out of the cell.
The surface area of the cell plays an essential function in demarcating its effectiveness in fascinating the nutrients through indirect approaches like diffusion as it assists in transporting the nutrients without utilizing energy.
Therefore, B is one of the models that are better for moving more nutrients in and out of the cell because B has smaller cells but more surface area than A.
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Some animals that are scavengers can eat bacteria-laden meat that would harm humans. Which of the following best explains why these bacteria would harm a human, but not a scavenger?
The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues.
Only human cells have the complementary receptors that bind to surface molecules found on the bacteria.
Antibodies found in the blood of the scavenger destroy the bacteria as soon as they enter the bloodstream.
The pH and temperature environment in the human encourages more bacterial growth and colonization.
The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues. Thus, option "A" is correct.
How, explain your answer briefly?Animals that feed on meat might have an immune system adapted to it and strong enough to prevent bacterial infections before it produces toxins and damages tissues.
Some of these animals (beetles) spray the rotting meat with an antimicrobial substance produced by their own organism, before starting to eat.
Other animals, however, consume rotten meat and attack bacteria with stomach acid that is ten times more acidic than our stomach acid, which can eliminate a large part of bacteria, before they cause problems. However, some bacteria can survive and cause serious problems if we eat these animals.
Thus, option "A" is correct.
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How does the nebular hypothesis account for the formation of planets?
Answer:Our solar system formed at the same time as our Sun as described in the nebular hypothesis. The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets
Explanation:
Mr. jones science class is comparing three samples. Mr Jones divided his class into four groups. Each group was given one of each of the samples to measure the mass. What would be the best explanation why group 3's measurements were so different from the rest of the groups?
Answer:
C
Explanation:
i am god
Question 3 of 10
What was the purpose of treating the radish seeds for the lab "Radical
Radishes" with radioactive cobalt-60?
A. To cause mutations in the radish embryos
B. To hybridize normal radish DNA with a radioactive DNA probe
C. To kill all the living microorganisms on the seeds
D. To produce labeled probes with radish DNA
SUBMI
The purpose of treating the radish seeds with radioactive cobalt-60 is to cause mutations in the radish embryos (Option A).
What is chemical mutagenesis?Chemical mutagenesis is a technique used in molecular biology laboratories by inducing mutations in germinal cells.
Chemical mutagenesis is very useful to link an anormal phenotype to a mutated gene, an approach known as reverse genetics.
In conclusion, the purpose of treating the radish seeds with radioactive cobalt-60 is to cause mutations in the radish embryos (Option A).
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In order to determine the shape of human muscle cells, a scientist should:
A. observe a sample of the cells with an electron microscope
B. prepare a medium for making a culture of the cells
C. observe a sample of the cells with a light microscope
D. prepare a model of that type cell
observe a sample of the cells with a light microscope
Explanation:
.
Photosynthesis is a means of converting light energy to chemical energy. Explain what this statement means.
Answer:
photosynthesis, the process by which green plants and certain
other organisms transform light energy into chemical energy .
During photosynthesis in green plants, light energy is captured
and used to convert water, carbon dioxide, and minerals into
oxygen and energy-rich organic compounds.
also
During the process of photosynthesis, light penetrates the
cell and passes into the chloroplast. The light energy is
intercepted by chlorophyll molecules on the granal stacks.
Some of the light energy is converted to chemical energy.
During this process, a phosphate is added to a molecule to
cause the formation of ATP(Adenosine triphosphate)
Let's take a short look at photosynthesis before moving on to this topic.
It is an exergonic, light-dependent, biological, oxidoreductive, energy-yielding process. Where sugars or (CH2O)n are produced energetically by reducing CO2.
Although Co2 is essentially prevalent in nature, it does not break down into sugars since the reaction is thermodynamically possible.
Right after sunlight strikes the surface of the leaf, there are these little components known as reaction centers or energy harvesting cores, which are surrounded by antenna complexes. These antenna complexes are normally composed of chl a, chl b, xanthophyll, carotenoid, etc.
Here, the antenna complexes serve as filters, allowing just the necessary amount of flux to depart the outershelled electron of the chlorophyll molecule via energy activation states (of different kinds).
As the pigment system activates the chlorophyll molecule, the energy from the light is now transferred to chemo potential energy, which is subsequently employed in the process to oxidize the water molecule by the Kok clock mechanism.
Now this is an rather interesting cycle having multiple energy states, from Ground (SO) to maximum (S4) notice that the energy was first required to move on to next step in intermediates but as soon as it reached S4 or max state it oxidized water and this energy is actually enough to reduce Carbon di Oxide to sugar.
(Attachment #1)
If I'm not incorrect, the conversion works like this.
(Attachment #2)
As a result, it needs to be activated gradually in order to build up enough energy to pass the energy barrier.
NOTE:
As you can see, plants don't purposefully create oxygen, but why do they continue to do so? It does this because its primary goal is to turn sugar into oxygen, which it then converts into water that actually vaporizes while keeping the system cool.
Alpa wants to change 0.54 kilometers into a smaller metric unit. She will have to
The correct answer is that she has to multiple
Multiple
Explanation:
Hope its help
Hope its help
Consider the following prediction. Prediction: If tomato plants are harmed by NoGro herbicide, then an increase in the concentration of NoGro herbicide in the supplied water will result in a decrease in the average height of the tomato plants over a one-year period. Which of the following best describes this prediction?
OA. The prediction is not useful because it has not yet been peer- reviewed by other scientists.
OB. The prediction is useful because it summarizes what is already known about a particular research question.
OC. The prediction is not useful because it fails to mention the name of the scientist doing the experiment.
OD. The prediction is useful because it explains what observations will be made if a hypothesis is true
The statement that describes this prediction is as follows:
The prediction is useful because it explains what observations will be made if a hypothesis is true.Thus, the correct option is D.
What is Herbicide?Herbicide may be defined as a chemical agent that is responsible for destroying or inhibiting the growth of a particular plant as compared to the normal one.
The projection is necessary because it supports the product after a one-year duration. So for example, if after one year there is undoubtedly a reduction in the intermediate height of the tomato plants, then we can absolutely say that it is because of the existence of NoGro herbicide which is supplied in water.
Therefore, it is well described above.
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Which of these
describes
humoral immunity?
A. the binding of antigen and antibody triggering a
response of plasma and memory b-cells to attack
B. t-cells and macrophages fighting infected cells that
are non-self or cancerous
C. our body remembering pathogens it has fought off or
learning from vaccines
D. obtaining immunity from an outside source, like
mother to baby
FutureForw
Answer:
D
Explanation:
obtaining immunity from an outside fluid
High population densities in urban areas have advantages and disadvantages. List as many of each as you can and defend your conclusion. How could the disadvantages be eliminated or reduced? Use evidence to support your conclusion.
Answer:
A larger population density will help reduce the average costs of the transport network. Areas of high population density have not seen the food shortages because of improved yields from agriculture and the ability to trade food. Economic growth will be comparatively more than low density area.
a fishery is considered collapsed when the annual catches fall below _____ of their historic high. the stocks can no longer support the fishery.
A fishery is considered collapsed when the annual catches fall below 10 percent of their historic high.
What is a Fishery?This process involves rearing and harvesting of fishes for domestic or commercial purposes.
When the annual catch falls 10 percent below its historic high it means it has collapsed due to decrease in their number with the stocks no longer being able to support the fishery
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10 The table shows the scientific names and the common names of four plants.
scientific name
Althea officinalis
Hottonea palustris
Viola palustris
Viola tricolor
common name
marshmallow
water violet
marsh violet
wild pansy
Which word in their names shows that two of the plants share the greatest number of features?
A marsh
B palustris
C Viola
D violet
Answer:
A marsh the answer is A
Explanation:
ggvuhhjnjunniiyfseeshn
The word in their names shows that two of the plants share the greatest number of features is marsh. Therefore, option A is correct.
What is marsh ?A marsh is a type of wetland where herbaceous plant species, not woody ones, predominate. The transition between the aquatic and terrestrial ecosystems is commonly formed by marshes, which are frequently found along the borders of lakes and streams. Grass, rush, or reeds frequently rule over them.
Cattails, sedges, papyrus, and sawgrass are typical examples. Most aquatic creatures, including fish and salamanders, can survive in water with little oxygen.
In a marsh, herbaceous plants make up more than half of the vegetation, and the pH of the soil is neutral. There are fewer than 30% woody plants in the area. Throughout the growth season, a marsh has standing water for extended periods of time.
Thus, option A is correct.
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