True or False: The human skin microbiome varies person to person.

If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, the product collected will be transgenic bacterial plasmids, inside the bacteria, in order to proove if the transgenic plasmid actually gives the bacteria resistance to the virus, it has to be grown in an infected medium.

The correct answer is option A.

Solid fossil fuel are formed over millions of years by decay of land vegatation or plant remains. When the layers are settled and heated, coal is produced as deposits. Fossil fuels are burned to produce energy. Power plants burn coal or oil to build heat that is consequently used to make steam to drive turbines which generate electricity.

Answer - Solid fosiil fuel formed from decay of land vegetation or plant remains. Produces energy when burned.

Explanation:

Homologous structures show individual variations on a common anatomical theme. These are seen in organisms that are closely related. 1. Give an example of a homologous structure from this activity: Crocodile

A population is in Hardy-Weinberg equilibrium if the genotype frequencies of the population are equal to the expected frequencies of the next generation, that is, if:

The frequencies of the population are:

P= f(SS)= 0.9025

H= f(Ss)= 0.095

Q= f(ss)= 0.0025

The population of frogs has 8000 individuals, 20 of which are homozygous recessive for the trait "being spotted"

Assuming Hardy-Weinberg equilibrium you can calculate the frequency of the recessive allele as follows:

The genotypic frequency of the homozygous recessive is

Apply the square root to determine the value of q:

The allelic frequencies are complementary, which means that they add up to 1, knowing the value of q you can calculate the frequency of the dominant allele p:

Predict the genotype frequencies of the offspring on equilibrium:

Homozygous dominant SS

Heterozygous Ss

Homozygous recessive:

Compare the results:

As you can see the genotype frequencies of the current population are equal to the genotype frequencies of the original population, you can say that the population is in Hardy-Weinberg equilibrium.

Once the population reaches equilibrium it does not change, i.e. the frequencies are the same from one generation to the other, unless some outer factors, like deforestation, create a drastic change in the genetic pool (for example, by eliminating/ adding individuals or isolating small portions of the population)

On the other hand, if the population is evolving, i.e. the genotypic frequencies are changing, and the observed genotype and allele frequencies will change from one generation to the next one.

If you concluded that the population is in equilibrium, then it is not possible for it to be evolving as the frequencies do not change for a population in equilibrium as they do when the population is evolving.

This means that the population is not evolving.

Answer:

False

Explanation:

An acquired trait is the character developed in an individual as a result of environmental influence. These traits are not coded by the DNA of a living organism and therefore cannot be passed on to future generations.

Answer:

You should restate your thesis, summarize the key supporting ideas you discussed throughout the work, and offer your final impression on the central idea. You should also show what you learned and how to improve.

Explanation:

Hope this helped!

Answer:

you make a conclusion

Explanation:

starting first with In my own opinion.....,..............

and so

on.

using the singular "I".

making sure it's your own

opinion

I hope

this helps

you

Implementing e911 call features for your VoIP network provides enhanced emergency response capabilities and ensures the safety of your users.

Implementing e911 call features for your VoIP network is crucial for several reasons. Firstly, it enables precise location tracking, allowing emergency services to quickly and accurately locate callers in need of assistance. This is particularly important for mobile VoIP users who may not be tied to a fixed physical address. By automatically transmitting the caller's location information to emergency services, e911 helps reduce response times and ensures that help reaches the right place.

Secondly, e911 call features enable callback capabilities, ensuring that emergency services can reconnect with callers if the call gets disconnected. In situations where communication is critical, this feature can be a lifesaver. It allows emergency responders to gather additional information or provide instructions, maximizing the chances of a positive outcome.

Furthermore, e911 compliance is often a legal requirement for VoIP service providers. Regulatory bodies enforce these requirements to safeguard public safety and ensure that emergency services can effectively respond to calls placed through internet-based telephony systems. By implementing e911 call features, you demonstrate your commitment to adhering to these regulations and prioritize the well-being of your users.

In conclusion, implementing e911 call features for your VoIP network offers significant benefits. It enhances emergency response capabilities, enables accurate location tracking, provides callback capabilities, and ensures compliance with legal requirements. By prioritizing the safety of your users, you create a more secure and reliable communication environment.

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You can tell from looking at a nuclear reaction that fusion has taken place by an increase in the total number of protons and neutrons which is denoted as option A.

This is referred to as a form of reaction which involves the fusion of two or more light nuclei to form a heavier nucleus.

We are ware that the nucleus comprises of subatomic particles such as proton and neutron which therefore means that a heavier nucleus being formed will lead to an increase in the total number of protons and neutrons hence option A was chosen.

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Answer: Hydrogen-3 or tritium as it is commonly called, has a half life of 12.32 years. If you start with 20 grams of it, how much will remain after 25 years? Ending Amount = Beginning Amount / 2 (time / half-life) Ending Amount = 20 / 2 (25 / 12.32) Ending Amount = 20 / 2 (2.0292) Ending Amount = 20 / 4.0818. Ending Amount = 4.8997 grams

Explanation:

Answer:

Explanation:the ont

In birds and mammals, the sinoatrial node is a small cluster of specialized cells located in the right atrium of the heart. It is often referred to as the "pacemaker" of the heart because it generates electrical signals. Pacemaker is right answer.

The vestige of the sinus venosus of the fish heart refers to the evolutionary remnants of the fish heart structure that can still be found in birds and mammals in the form of the SA node. The SA node acts as the primary natural pacemaker of the heart, initiating the electrical impulses that regulate the rhythm and rate of the heartbeat. These impulses spread throughout the heart and coordinate the contraction and relaxation of the atria and ventricles, ensuring an efficient and coordinated pumping action of the heart. Other options listed, such as baroreceptor, site of erythropoiesis, inhibitory node, and diastole detector, are not accurate descriptions of the SA node or its function in the heart.

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Answer:

A. Thin

Explanation:

according to the graph, on day 20 there are more aliens in the thin form than in either of the other two forms. so the form with the highest probability is the form.

Answer:

1) Messenger RNA molecules contain ribose, and transfer RNA molecules contain deoxyribose.

2) Messenger RNA molecules function in carrying coded information to the ribosomes, and transfer RNA molecules function in carrying amino acids to the ribosomes.

The major difference between messenger RNA molecules and transfer RNA molecules is that messenger RNA carries the genetic information, while tRNA carries the amino acids.

RNA is ribonucleic acid. In the cell, different types of RNA are found, such as mRNA (messenger RNA), tRNA (transfer RNA), rRNA (ribosome RNA), SnRNA, miRNA, etc. mRNA, or messenger RNA, is formed from DNA. It carries the information of a cell. The three consecutive nucleotides of mRNA make up a codon. An example of a codon is AUG.

tRNA has a cloverleaf-like structure. It has different domains such as the TΨC loop, the DHU loop, the anticodon region, and at the 3' end it is attached to an amino acid. The anticodon of the tRNA reads the codon sequence of the mRNA and attaches the amino acids. For the AUG codon methionine is attached.

Hence, the main difference between the messenger RNA and transfer RNA molecules is that mRNA carries the message of the genetic material, while tRNA carries amino acids to express the genetic material on mRNA.

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Answer: a. 25 percent

Explanation:

Complete dominance is the mendelian inheritance pattern, while co-dominance and incomplete dominance are non-mendelian inheritance patterns. Trait 1: Hair length. Trait 2: Hair color. Trait 3: Hair type.

When the dominant allele completely masks the recessive allele, we talk about complete dominance.

This is the case of individuals that are heterozygous for a particular gene and express the dominant trait.

The dominant allele is hiding the expression of the recessive allele.

Codominance refers to a non-mendelian inheritance pattern in which two alleles of the same gane are equally expressed.

There is no dominant or recessive alleles, since non of them hides the expression of the other one in heterozygous individuals.

The phenotype of a heterozygote expresses two alternative variants inherited from each homozygous parent.

Heterozygous individuals express both parental phenotypes, as it is an additive expression of their parents' genes.

Refers to a non-mendelian inheritance pattern in which the heterozygous individual expresses an intermediate phenotype between the dominant and the recessive phenotypes.

Neither of the involved alleles completely dominates over the other one.

We will propose an example of mammal hair,

Trait 1) Simple dominant/recessive inheritance

- Length is coded by a diallelic gene expressing complete dominance

Trait 2) Co-dominance

- Color is coded by a triallelic gene I expressing co-dominance

Trait 3) Incomplete dominance

- Type of hair is coded by a diallelic gene expressing incomplete dominance

                            Trait 1                  Trait2                    Trait3            Trait 4    

Length                 LL-Long                Ll-Long                ll-Short             ***    

Color           IBIB/IBi-Black    IBIW-Black/White    IWIW/IWi-White    ii-albino    

Type                    SS-Curly               Ss -Wavy           ss-straight            ***        

Genotypes                                         Phenotypes                                

LLBBSS, LlBBSS                             Long, Black, Curly hair

LLBWSS, LlBWSS                           Long, Black and white, Curly hair

LLWWSS, LlWWSS                          Long, White, Curly hair

LLBBSs, LlBBSs                              Long, Black, Wavy hair

LLBWSs, LlBWSs                           Long, Black and white, Wavy hair

LLWWSs, LlWWSs                          Long, White, Wavy hair

LLBBss, LlBBss                              Long, Black, Straight hair

LLBWss, LlBWss                           Long, Black and white, Straight hair

LLWWss, LlWWss                          Long, White, Straight hair

llBBSS                                              Short , Black, Curly hair

llBWSS                                            Short, Black and white, Curly hair

llWWSS                                             Short, White, Curly hair

llBBSs                                                Short, Black, Wavy hair

llBWSs                                             Short, Black and white, Wavy hair

llWWSs                                            Short, White, Wavy hair

llBBss                                               Short, Black, Straight hair

llBWss                                       Short, Black and white, Straight hair

llWWss                                              Short, White, Straight hair                  

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Answer:

Your answer is hurricane.

Explanation:

Storm surge is an abnormal rise of water generated by a storm, over and above the predicted astronomical tide. It's the change in the water level that is due to the presence of the storm. Hope this helped :)

Answer:

Faltworms rely on difussion to transport oxygen and nutrients to their internal tissue and to get rid of carbon dioxide and other wastes from their body . Flateworms have no heart ,blood, blood vessels, grills , or other respiratory systems. Flatworms have flame cells. Flame cells are specialized cells that remove and purify excess water from the body.

Answer:



Explanation:

During El Niño, when the trade winds are weak or even occasionally reverse themselves, the amount of cold water that comes to the surface is reduced. Warm waters in the west Pacific Ocean slosh to the east. Now there is a large area along the equator, where ocean temperatures are above normal.

Answer:

east

Explanation:

Normal platelets have a circulating life span of approximately 7-10 days.

The platelet's basic functions represent both its regular operation and adaptability in circulation. Having a low platelet count can make it difficult to stop bleeding. His body may bleed internally, subcutaneously, or from the surface of his skin. Serious bleeding might not occur until a person's platelet count is extremely low.

Leukaemia and other malignancies are examples of factors that can reduce platelet production. certain kinds of anaemia. viral illnesses like HIV and hepatitis C.

Megakaryocytes, which are big cells found in the bone marrow, are the building blocks of platelets. They aid in the formation of blood clots that hasten the healing of wounds and lessen or stop bleeding. It could be problematic if there are too many, too few, or platelets that aren't working properly.

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Answer:

Mollusca, Arthropoda, and Chordata.

Explanation:

The three animal phyla that dominate life on land are Mollusca, Arthropoda, and Chordata.

hope this helps!

1,000 kilocalories of energy available to the next trophic level.

The 10 percent rule states that only ten percent of the energy in an ecosystem will be transferred from one trophic level to the next. An energy pyramid provides a graphic representation of energy loss at each level of the feeding stages of species in an ecosystem.

So, energy captured in the next trophic level = 10,000 kilocalories of 10%

                                                                           = 1,000 kilocalories

Energy is lost as metabolic heat when animals from one trophic level are ingested by species from the next level, hence energy diminishes as it goes up the food chain. Energy transmission between trophic levels is quantified by trophic level transfer efficiency (TLTE).

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Villi and microvilli are specialized structures found in the small intestine that increase its surface area to enhance nutrient absorption. Villi and microvilli are projections that protrude from the intestinal lining while lacteals are small lymphatic vessels located within the villi.

Villi and microvilli are finger-like projections that line the small intestine and aid in the absorption of nutrients. Villi are larger and contain blood vessels and nerves, while microvilli are smaller and increase the surface area for absorption. Both villi and microvilli work together to maximize the absorption of nutrients from food.

Lacteals, on the other hand, are specialized lymphatic vessels found within the villi. They absorb dietary fats and fat-soluble vitamins and transport them to the lymphatic system for distribution throughout the body. Lacteals are different from blood vessels, which transport nutrients and oxygen to the body's tissues.

In summary, villi and microvilli aid in nutrient absorption, while lacteals specifically absorb dietary fats and fat-soluble vitamins.

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Answer:

Body temperature regulation/Thermoregulation

This is one of the homeostatic systems.

Answer: Mutations DUH it keeps saying Mutations over and over

Explanation:

Answer: B

Explanation:

The arrow travels from a cell to a cancerous tumor. The arrow is labeled with mutations so that’s the cause. On a more specific level, cancer is a group of cells but that’s not the cause, because we need cells to survive. Genes are pieces of dna which we also need to survive, because dna makes us who we are. That only leaves mutations

Answer:

Force acting on the plane = 87,500 N

Explanation:

Given:

Mass of airplane = 25,000 kilogram

Acceleration of plane = 3.5 m/s²

Find:

Force acting on the plane

Computation:

⇒ Force = Mass x acceleration

⇒ Force acting on the plane = Mass of airplane x Acceleration of plane

⇒ Force acting on the plane = 25,000 x 3.5

Force acting on the plane = 87,500 N

Using dams as freshwater sources can damage existing habitats.

What is the Environmental Impact of dams?

Freshwater habitats are severely harmed by dams, which has an impact on both humans and the environment. Dams, canals, and diversions already stop the flow of 60% of the world's major rivers. Dams and the infrastructure they are associated with, including irrigation systems, are a major cause of the disappearance of numerous freshwater habitats and species.

Dams cut off rivers from their marshes and floodplains. Freshwater ecosystems may suffer catastrophic harm. They affect fish migration patterns and inundate riparian habitats such as waterfalls, rapids, riverbanks, and wetlands. Dams alter the diversity and productivity of species by impeding the natural flow of sediment to deltas, estuaries, flooded forests, wetlands, and inland seas. Water quality is impacted by dam activities as well. Retention of water and sediment has an impact on the capability of rivers to handle waste and the quality of the water (the ability to break down organic pollutants). This might result in the creation of harmful hydrogen sulfide gas, further lowering the quality of the water.

Hence, the answer is, D. Dams can damage existing habitats.

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Answer:

C. Daughter cells that are identical to the parent.

Explanation:

According to the question, Mitosis and meiosis are processes involved in cellular reproduction is two stages of cell division.

Mitosis involves the division of body cells, while meiosis involves the division of germ cells. The division of a cell occurs once in mitosis but twice in meiosis.

Thus, option "D" is correct.

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Carly Kenkel, a scientist from The University of Texas at Austin is researching coral bleaching and its relation to climate change. Coral reefs are important habitats for many species of marine animals and plants, and they are built by small animals called corals. Corals have a symbiotic relationship with certain types of algae called zooxanthellae which live inside the coral's cells and provide them with food and energy while corals provide the algae with a safe place to live.

When the water becomes too warm, the zooxanthellae can no longer survive, and they leave the coral. Without the zooxanthellae, the coral loses its color and turns white, a process called coral bleaching. Climate change is causing the oceans to become warmer, and as a result, coral bleaching is becoming more widespread. If the water remains too warm for a prolonged period, the bleached corals will eventually die.

Carly Kenkel is interested in understanding why some corals and their zooxanthellae can still survive together despite the warm water, while others cannot. She observed that in some parts of the reef, the corals were bleaching while other parts were still healthy. She hypothesizes that there may be some underlying genetic or environmental factors that determine which corals are able to survive and continue their symbiotic relationship with their zooxanthellae despite the warmer water temperatures. She aims to study these factors and understand them better to help protect corals and coral reefs.

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