Which of these is an example of Bioremediation?
A - The mercury contained in fish builds up in animals that eat the fish.
B - Bacteria are introduced to break down hydrocarbons in an oil spill.
C - Materials containing metal are toxic to organisms that live in them.
D - An increased growth in microorganisms results in oxygen depletion​

Answer:

I think the correct answer is succession.

Explanation:

In biology, succession is the order in which species appear in an ecosystem over time.

In this case, Hawaii's lush tropical forest arose from a process of succession because its lush took its time to develop.

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Answer:

All the possible alleles for a gene with multiple alleles cannot be expressed by single individual

Explanation:

Gene pool refers to the sum total of all the alleles of all the genes which are present in a population. Human beings are diploid organisms. One individual can have only two possible alleles for a gene. A gene can have two or more than two alleles. Since all the possible alleles for a gene with multiple alleles cannot be expressed by single individual, a gene pool cannot be made of one individual.

Answer: A

Hope this helps

Answer:

B. store excess carbon underground

Explanation:

The fossil fuels have been formed on the basis of organisms that have died, mostly producers. These organisms have carbon stored in them. As they died and got covered by sediments, the carbon has been stored in the lithosphere. Since more and more sediments have been covering the stored carbon, it has been isolated and stored into the lithosphere for tens or even hundreds of millions of years, thus contributing to lowering the amount of carbon in the atmosphere for quite some time, and removing it from its natural cycle.

Oxygen gas released into atmosphere

Answer:

In plants, glucose is produced as a result of photosynthesis. Plants need the energy glucose provides in order to grow and reproduce. Glucose is also required for the process of cellular respiration, in which plants convert carbon dioxide from the air into oxygen.

not mine! source: https://sciencing.com/produced-result-photosynthesis-7189979.html

This is called facilitated diffusion(facilitated by membrane proteins) examples would be diffusion of ions such as sodium, potassium etc.

Hope this helps;)

Answer:

The small polar molecule enters a cell with help from a membrane protein by    a process known facilitated diffusion.

Explanation:

The facilitated diffusion also known as passive diffusion. It allows movement of molecules along the concentration gradient whereas the process of active diffusion involves energy as it is against the concentration gradient.

The facilitated diffusion involves carrier protein and channel protein. Thus small molecules can easily pass through channel proteins.  

Answer:

Habitat loss or change.

Explanation:

If an ecosystem is destroyed, or altered, the organisms in that specific area may struggle to survive, or have to relocate to a suitable habitat. When this happens it may result in a butterfly effect where species die or migrate away. The Species diversity will then decrease in that ecosystem.

Loss of habitat or geographical isolation has the greatest effect on species diversity in an area.

Habitat loss or change has direct negative impact on species diversity.

Due to change in habitat the natural habitat loses its capability to sustain native life in terms of resources, nutrition and reproduction.

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Answer:

The correct answer is rRNA plays an important role during translation (protein synthesis) of mRNA.

Explanation:

Ribosomal RNA or rRNA are the RNA molecules which build up the site for protein synthesis known as ribosomes.

Ribosome synthesis takes place in nucleolus where two types of rRNA molecules associates with proteins, one in large subunit and one in the small subunit to form ribosomes.

These ribosomes physically moves along an mRNA molecule and catalyze the assembly of amino acids where rRNA molecules performs the catalytic steps of protein synthesis that is stitches amino acids together and makes up proteins.

Thus,  rRNA plays an important role during translation (protein synthesis) of mRNA.

ANSWER:

The role of rRNA (Ribosomal RNA) in gene expression is to form part of the ribosome.

REFERENCE:

3.3 Determine the information flow from DNA to RNA to direct the synthesis of proteins

DNA, RNA, and the Development of Multicellular Organisms READING ASSIGNMENT

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3.4 Investigate genetics with respect to human inheritance and DNA mutations

DNA Replication READING ASSIGNMENT

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Answer:

I think its A

Explanation:

Having a high biodiversity can help an ecosystem to survive a disturbance it doesn't decrease the chances of one happening.

High biodiversity increases the chances of an ecosystem surviving a disturbance and contributes to ecosystem stability.

Answer:

Biodiversity refers to the variety of living organisms in an ecosystem, including different species, genetic diversity, and ecological diversity. It plays a crucial role in maintaining the stability of ecosystems. High biodiversity increases the chances that an ecosystem will be able to survive a disturbance, such as a natural disaster or human activities. This is because different species have different roles and functions, and a diverse ecosystem is more resilient and adaptable to changes.

For example, in a forest ecosystem, a diverse community of plants, animals, and microorganisms interact and depend on each other. If there is a disturbance, such as a forest fire, a diverse ecosystem can recover more quickly because different species have different strategies for survival and can fill in the vacant ecological niches left by the disturbance.

In contrast, low biodiversity makes an ecosystem more vulnerable to disturbances. If an ecosystem has low diversity and one species is severely affected by a disturbance, such as a disease outbreak, the entire ecosystem can be destabilized. This can lead to a chain reaction, affecting other species that depend on the affected species, and ultimately leading to a collapse of the ecosystem.

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Answer:

B

Explanation:

The water will be polluted by the trash.

Answer:

Tationia

Explanation:

B

A population that is growing exponentially in the absence of limiting factors can be illustrated by a J-shaped curve.

In conclusion, a population that is growing exponentially in the absence of limiting factors can be illustrated by a J-shaped curve.

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Answer:

0.01175 meters

1 m =1000 mili meters

11.75 mili meter = 11.75 X 10^-3

Answer: 0.0118 meters

Explanation:

Answer:

Kingdom

Explanation:

The lowest level would be Kingdom, specifically, Kingdom Animalia. The next biological classification would be Phylum and at this point vertebrates and invertebrates are categories into different phyla. Butterflies belong to the phylum arthropoda, while dogs are classified into phylum chordata.

Answer:b

On edge

Explanation:

A. Prokaryotes

C. Unicellular

D. Heterotrophs

They are all Prokaryotes

Answer:

C. The concentration of calcium in the myofibril must decrease.

Explanation:

As soon as the stimulus which causes myofibril to contract stops, its time for muscle to relax.  

A low calcium level in the sarcoplasm is the utmost requirement of muscle relaxation otherwise sliding of myosin will continue and muscle will keep on showing contraction. In order for muscle contraction, calcium ion i.e. Ca²⁺ must come out of the sarcoplasmic reticulum so for relaxation reverse process occurs i.e. Ca²⁺ is pushed back to the sarcoplasmic reticulum. There are many pumps known as "calcium pumps" which facilitate this process. Now, the concentration of Ca²⁺ becomes comparatively low in the sarcoplasm which causes troponin C to detach from Ca²⁺. Their detachment causes actin and myosin to detach from each other too which finally leads to muscle relaxation.

Definition. noun, plural: (genetics, ecology) A group of organisms of one species that interbreed and live in the same place at the same time (e.g. deer population) (taxonomy) A low-level taxonomic rank. (statistics) A set of individuals, objects, or data from where a statistical sample can be drawn.

Answer:

A group of the same species living together

Explanation:

APEX

Answer:

B. Their gametes must swim in order to interact and for fertilization to occur

Explanation:

Answer: B. Their gametes must swim in order to interact and for fertilization to occur.

Explanation:

Liverworts and mosses are the primitive plants used to have evolved from the aquatic life to terrestrial life. These plants are bryophytes and they do not exhibit true roots, stems and leaves. The reproduction in these organism is facilitated by water as the gametes swims in the water. The fusion or fertilization of the gametes takes place in water.

The result of mutation during meiosis is that the offspring of the organism will have a mutation.

Meiosis is a proces by which cells divide in order to produce four other cells, each with half the full complement of DNA. Meiosis aims to produce gametes (eggs and sperm cells).  Errors may take place during meiosis giving way to gametes with an extra or missing chromosome.

During the process of meiosis, chromosomes are replicated once in S phase (just like mitosis) into sister chromatids, but the cell divides twice.

The meiotic mutations are associated with genetic recombination and depend on double-strand breaks that initiate crossing over.

In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair cause an error during other forms of repair,or cause an error during replication .

Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements.Meiotic mutations cause genetic recombinations and are dependent on the breaks which occur on the double strands.

Thus,the  result of a mutation during meiosis is genetic recombination.

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Answer: D. Point source

Explanation:

The point source pollution is caused by a single pollutant the origin of which is known and can be easily track back. For example a sewage drainage or industrial discharge in an water body.

The manufacturing plant was found guilty of polluting the water is the example of point source pollution because it's source of origin is single, known and can be track back.

Answer:

D. point source

Explanation:

Answer:

The correct answer would be the lysosome.

Explanation:

Small organelles can be found in the cytoplasm of animal cells called lysosomes. Lysosomes carry enzymes that were produced by the cell.

The major function of the lysosome is to digest macromolecules or substances that waste or defected. They might be utilized to digest food, cellular waste or break down the cell when it dies.

Thus, the correct answer is the lysosome.

Answer:

Serves as a baseline to compare experiment results to

Explanation:

The control group recieves no minipulation from the independent variable of an experiment which provides a baseline to compare the results to and evalutate the effects of the minipulated variable.

Answer:

Read Below

Explanation:

The central dogma is the process of creating a protein from DNA.

Steps:

DNA->Transcription->mRNA->Translation->Polypeptide

Gene expression is done through the central dogma steps. The two steps would be transcription and translation

Answer:

The central dogma states that DNA contains the genetic code needed to make proteins—a process known as gene expression. Transcription and translation are the two steps involved in gene expression. In transcription, the DNA code is turned into RNA. In translation, the RNA sequence provides instructions to the cellular machinery to manufacture polypeptides, which become proteins.

Explanation:

Answer:

Explanation:he differences between the forest and the tundra are the climates,animals and plants.The tundra's climate is very cold while the forest is warmer and the tundra receives little sunlight whereas the forest receive direct and constant sunlight.the animals living in the tundra includes the arctic fox,snowy owl,caribou,ermine and polar bear and some tropical forest animals are the howler monkeys,sloths,jaguars,parrots and toucans.there are only a few plants that grow in the tundra.Some of them are the arctic moss,arctic willow,bearberry and pasque flower.These are the differences between the tropical forest and the tundra.

The two most diverse biomes are the tropical rain forests and the tundra biome.  

The following are the differences in biodiversity between the tropical rainforest and the arctic tundra:  

• The arctic tundra is classified as the cold icy desert, while the tropical rainforest is the wet climate group.

• In the Arctic tundra, the plains do not support trees, however, one can witness some bushes here and there, while the tropical rainforests are lush green comprising all the major kinds of trees and vegetation.  

• The prime difference in biodiversity in the tropical rainforests and the Arctic tundra is the warmer temperatures and more rainfall, which allows more species to survive. While the Arctic regions exhibit the least vegetation and life due to extreme weather conditions that are temperature below the freezing points.  

• Some of the species found in the Arctic regions are arctic moss, polar bear, arctic fox, arctic willow, and arctic hare.  While the tropical rainforests comprise tall trees and animals like anteaters, sloths, lemurs, and others.  

Thus, there is a vast difference in the biodiversity of the tropical rain forests and the Arctic tundra.  

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Answer:

B and C

Explanation:

B is chloroplast, which involved in photosynthesis to make glucose as food for plants cell.

C is cell wall, which provide structural support and protection

Answer:

B,C are the correct answer's not C,D or D,A nor -C

Explanation:animal and plant cells have similar properties they both have the following

nucleus

golgi body

cell membrane

lysosome

endoplasmic

cytoplasm

ribosomes

vacuole

these are the similar propertise that the animal and plant cells have in common.Although there are some other types of cell's that may have similar propertise and there are cells that may have some of the listed propertise and other propertise and there are cells with none of these propertise that are similar in how they work but with different propertise.

Answer: C. the output of one is the input of the other

Cellular respiration is interrelated with photosynthesis because the product of photosynthesis is a substrate for cellular respiration, hence option c output of one is the input of the other.

Photosynthesis is a light-dependent process to make metabolic product glucose for energy, a carbon-containing compound.

Cellular respiration is the process to extract energy from metabolic products and convert into the form of ATP, this ATP is used by cells as an energy currency.

Cellular respiration depends on photosynthesis for the metabolic substrate to extract energy during the process.

Therefore photosynthesis is related to cellular respiration, the output of one is the input of the other process, hence option c is correct.

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Answer:

D

Explanation:

In water, an embryo can exist without desiccation hence remain viable until it is able to develop into another plant. On land, however, the embryo will be prone to desiccation and seeds are a plant’s adaption to survive life on land. The seeds have a pulp that provides the moist environment enclosing the embryo. In addition, seeds have a testa/seed coat that drastically lowers the rate of loss of water from the inside of the seed to the environment.

The production of seeds is the adaptation that allowed plants to exist on land. Therefore, the correct option is D.

The development of seeds enabled plants to reproduce and disperse their offspring without the need for water. The protection and nutrition provided by seeds to the growing embryo allows plants to settle and thrive in a wide variety of terrestrial habitats. This adaptation has helped plants to successfully colonize a variety of terrestrial ecosystems and has contributed significantly to the success and diversity of plant species on Earth.

Therefore, the correct option is D.

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Answer:

what are the animals?

The solution would be hypertonic.

A hypertonic solution is one where the concentration of solutes is greater outside the cell than inside.

Answer:

Outside it is hypertonic, whereas inside it is hypotonic solution.

Explanation:

We can classify the solution into three types:

Hypertonic, hypotonic and isotonic.

If a cell is placed in a solution where the concentration of solutes is more outside than inside, then the cell is said to be hypotonic with respect to cell exterior.

If a cell is placed in a solution where the concentration of solutes is less outside than inside, then the cell is said to be hypertonic with respect to cell exterior.

If the solute concentration is same both inside and outside the cell then the cell is said to be isotonic with the exterior solution.

Water always moves from low solute concentration to higher solute concentration across the semipermeable membrane to bring it to equilibrium.

Asymmetry - Sponge

Bilateral - Lobster

Radial - Hydra