Please HURRY!!
Why are bacteria needed in the nitrogen cycle?

A. Other living things cannot use atmospheric nitrogen.
B. Other living things cannot use the nitrogen in plants.
C. Bacteria are the main nitrogen reservoir.
D. Bacteria are the main nitrogen transporters.

Answer:

Explanation:

Yes, the disease specialist's explanation is plausible based on what we know about evolution by natural selection. Let me break it down for you in simpler terms.

The disease specialist is suggesting that the tropical fungus mentioned by your colleague might be related to the fungal pathogen causing the illness at the hospital. They explain that even though the tropical fungus may have been brought to Vancouver Island some time ago, it might not have caused any illness until now. This could be because the tropical fungus was originally adapted to a different environment and couldn't infect people in the new environment of Vancouver Island.

Now, here's where evolution by natural selection comes into play. Over time, organisms can undergo changes in their traits and abilities through a process called natural selection. Mutations, which are changes in the genetic material of organisms, can happen randomly. If a mutation occurs in the tropical fungus that enables it to infect individuals in the Vancouver Island environment, it could be favored by natural selection.

For example, let's say that due to a mutation, the tropical fungus developed adaptations that allowed it to thrive in the new environment and infect people. These adaptations might include changes in its ability to penetrate human cells or evade the immune system. As a result, the fungus would become more successful at causing infections in the Vancouver Island population.

So, the disease specialist's explanation is plausible because it suggests that over time, through natural selection acting on mutations, the original tropical fungus could have evolved adaptations that made it capable of causing illness in the new environment of Vancouver Island.

The bacteria that live in deep sea vents where no light penetrates, yet are still capable of producing their own reduced carbon are classified as chemoautotrophs.

Chemoautotrophs are the class of organisms that use inorganic chemical reactions as the source of energy to produce organic compounds by using carbon dioxide. As they live in deep sea vents or other regions where light generally does not reach, they do not use light energy instead they use the energy obtained from the oxidation of the inorganic compounds to convert carbon dioxide into the necessary organic compounds.

Photoautotrophs are the class of organisms that cannot live in areas where light does not penetrate as they require light for energy production by photosynthesis.

Photoheterotrophs and chemoheterotrophs cannot synthesize their own products and are dependent on other plants and organisms to meet their energy and nutrition requirements.

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Answer: Each atom of the period table is in order of increasing atomic number.

Explanation: I hope this helps! :)

Answer: b

Explanation:

a. The drawing is attached

b. The advantage of the type of response seen in the seedling with equally spaced ink marks on its radicle is that it enables the seedling to grow in a specific direction towards a source of water and nutrients.

The jar was left in darkness to eliminate the influence of light on the seedling's response.

Hydrotropism is a type of tropism in which plant roots grow towards or away from moisture.

By having equally spaced ink marks, the seedling can determine the direction of water and nutrients and grow in that direction, which increases its chances of survival and growth.

Plants can also exhibit phototropism, which is the growth or movement of a plant in response to light. By placing the jar in darkness, any response seen in the seedling can be attributed solely to hydrotropism, and not to the influence of light. This helps to ensure that the experiment is controlled and that any observed results are due to the independent variable being tested, which in this case is the presence of water.

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Answer:

ya the youth service project or

the youth service project or civis organisation help the community

When considering osmosis and the tonicity of cells, certain factors such as having the flu, experiencing a high fever, excessive sweating (resulting in sodium ion loss), severe nausea, and vomiting (leading to sodium ion loss) can contribute to the swelling of body cells due to water diffusing into them.

Tonicity refers to the ability of a solution to cause a cell to gain or lose water through osmosis. When the surrounding solution has a lower solute concentration than the cell, water enters the cell, causing it to swell.

Conversely, when the surrounding solution has a higher solute concentration than the cell, water exits the cell, causing it to shrink.

In the scenario described, heavy sweating and frequent vomiting cause a significant loss of sodium ions from the body. Sodium ions, being the primary extracellular ion, play a crucial role in regulating water balance.

They are typically present in a solution combined with other ions like potassium and chloride.

An imbalance in the concentration of these ions affects tonicity. Sodium loss leads to a condition called hypotonicity, where the concentration of solutes in the extracellular fluid becomes lower than that in the intracellular fluid.

The excessive loss of sodium ions can result in the swelling of body cells. Since plain water lacks sufficient solutes to replace the lost sodium ions, water will diffuse into the cells through osmosis, causing them to swell.

This swelling not only affects comfort but can also have serious health consequences. Excessive cell swelling may lead to cell rupture, and if brain cells swell, it can cause brain damage.

Therefore, it is important to address the underlying cause of sodium ion loss and ensure proper hydration with electrolyte-rich solutions to maintain appropriate tonicity and prevent detrimental effects on cell function and overall health.

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Answer: genes are linked

Explanation: Gene on a chromosome lies close to another gene controlling a different trait. This indicates that genes are linked, meaning they are physically close to each other on the same chromosome. The proximity of these genes suggests that they are more likely to be inherited together as a unit, rather than independently assorting during the process of genetic recombination.

Answer:

b).offspring would be genetically identical.

Explanation:

To grow the exact same plants, a person would reproduce asexually because the offspring would be genetically identical. Hence, the correct answer is option b.

There are two different types of reproduction: sexual reproduction and asexual reproduction. In sexual reproduction, the offspring that are formed are slightly different from the parents. This is due to meiotic cell division. Variations in offspring are seen as a result of gene crossing over.

In asexual reproduction, all the offspring are identical to the parents. It is similar to mitosis. Recombination and crossing over do not occur here.So in order to get the exact same plant, this type of reproduction is done by taking a branch from a tree, etc. Others are incorrect statement options.

Hence, to get the exact same plants, a person should go for asexual reproduction, as they produce genetically identical offspring. Option b is the correct answer.

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Paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.

In salt water, the solute concentration outside the cell is more than inside the cell so the water flows out of the cell down the concentration gradient. Therefore contractile vacuoles are not required for expelling water for most protozoan living in salt water.

While on the other hand, paramecium lives in fresh water so contractile vacuole is required for removing excess water so we can conclude that paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.

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Explanation:

Protein is an important part of a healthy diet. Proteins are made up of chemical 'building blocks' called amino acids. Your body uses amino acids to build and repair muscles and bones and to make hormones and enzymes. They can also be used as an energy source.

Proteins are the building blocks of life. Every cell in the human body contains protein. The basic structure of protein is a chain of amino acids.

You need protein in your diet to help your body repair cells and make new ones. Protein is also important for growth and development in children, teens, and pregnant women.

In areas with short growing seasons, moose and wolf population trends are likely to differ from those in areas with a normal growing season. Both species are dependent on vegetation, and a shorter growing season means there will be less food available for them.

Moose populations may experience a decline in numbers due to the reduced availability of food. With fewer moose to prey on, wolf populations may also decline. However, if the wolf population can adapt to the lack of moose, they may switch to other prey, which could allow them to maintain their population size. In general, average population sizes of both moose and wolves are likely to be smaller in areas with a short growing season compared to those with a normal growing season.

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The correct labelling of each cell structure found in animal cells and plant cells is as follows-

1.Plant cells are the smallest biological unit of life found in plants. They are classified as eukaryotic cells, which have a nucleus and organelles surrounded by a membrane.

2. Plant cells are very small and can only be viewed using a microscope and can be between 0.01 and 0.1 millimeters in size. Plant cells play a very important role in plant adaptation and contain chlorophyll which is responsible for trapping energy during photosynthesis.

3. Animal cells are the basic unit of life in organisms of the kingdom Animalia. They are eukaryotic cells, meaning that they have a membrane-bound nucleus with DNA inside.

4. They also have other membrane-bound organelles that carry out different functions. Animal cells do not have a cell wall or chloroplasts, which are plant-specific organelles.

Lysosome - found in ANIMAL cells but not most plant cells.

Cell wall - found in PLANT cells but not animal cells.

Nucleus - found in both PLANT and ANIMAL cells.

Chloroplast - found in PLANT cells but not animal cells.

Rough endoplasmic reticulum (ER) - found in both PLANT and ANIMAL cells.

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Answer:

4.They would produce endospores.

Explanation:

Answer:

4.They would produce endospores.

Catchphrase:

Wubba lubba dub dub!!

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Explanation:

Answer:

changes, into, chemical messengers

Explanation:

When a neurotransmitter (ligand) binds to the ligand-gated ion channel of a postsynaptic neuron, the shape of the channel protein changes, allowing ions to flow into the cell. These ions are chemical messengers that perpetuate the signal transduction of the nerve signal.

The neurotransmitter binding to the ligand-gated ion channel causes a conformational change in the shape of the channel protein. This allows ions, such as sodium or potassium, to flow through the channel and into the cell. These ions can then trigger various signaling pathways within the cell, leading to the transmission of the nerve signal. This process is known as signal transduction, and it is essential for the transmission of information within the nervous system.

A feature of the wobble hypothesis is that the third nucleotide in a codon can form non-standard base pairs with the corresponding nucleotide in the anticodon of tRNA. Option A is correct answer.

The wobble hypothesis is a concept in molecular biology that explains the degeneracy of the genetic code. According to this hypothesis, the pairing between the third nucleotide of a codon in mRNA and the corresponding nucleotide of the anticodon in tRNA is less strict compared to the other two nucleotides. Specifically, the third nucleotide of the codon and the first nucleotide of the anticodon can form non-standard base pairs, allowing some flexibility in the genetic code.

For example, in the case of the codon UUU (which codes for the amino acid phenylalanine), tRNAs with the anticodon AAA and AAG can both recognize and bind to this codon due to the wobble pairing. This phenomenon enables a single tRNA molecule to recognize multiple codons that differ only at the third position, increasing the efficiency and versatility of protein synthesis.

The wobble hypothesis provides an explanation for how the genetic code can be degenerate (having multiple codons for the same amino acid) while still maintaining specificity and accuracy in protein synthesis.

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The complete question is

Which of the following statements is a feature of the wobble hypothesis?

A. The third nucleotide in a codon can form non-standard base pairs

B. The hydrogen bonds between the codon's third base, and the anticodon's first base

C. Hypothesis explains why the only variability that exists between different codons

Venous pressures are generally lower than arterial pressures due to the differences in their respective functions and the resistance offered by arterial walls.

Venous pressures are expected to be lower than arterial pressures. Arterial pressure refers to the force exerted by the blood against the walls of arteries, generated by the pumping action of the heart during systole.

Arteries are responsible for transporting oxygenated blood away from the heart to tissues throughout the body.

The arterial system experiences higher pressure due to the pumping action of the heart, the elastic properties of arterial walls, and the need to maintain blood flow against resistance.

In contrast, venous pressure refers to the force exerted by the blood in the veins. Veins carry deoxygenated blood back to the heart.

The veins are thinner-walled and less elastic compared to arteries, which means they have less ability to withstand and maintain high pressures.

Moreover, venous return is aided by various mechanisms, such as the contraction of surrounding muscles, the presence of one-way valves, and the respiratory pump (breathing movements).

These mechanisms assist in propelling blood towards the heart and overcoming the resistance in the venous system, resulting in lower venous pressures compared to arterial pressures.

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Ventricular filling and preload are closely connected. So, the correct option is d. ventricular filling.

The term "preload" describes how much the cardiac muscle fibres in the ventricles are stretched near the end of diastole, immediately before systole starts. It is mostly governed by ventricular filling, or the volume of blood that fills the ventricles and returns to the heart during diastole. As a result, the preload and ventricular filling are directly correlated, with an increase in the volume of blood returning to the heart causing an increase in the degree of cardiac muscle fibre stretching and vice versa.

When the ventricles are not filling or expelling blood and their volume is constant, these stages of the cardiac cycle are referred to as isovolumetric contraction and rest. The preload has no direct bearing on these phases.

The phase of the cardiac cycle when the ventricles contract and eject blood into the aorta (left ventricle) or pulmonary artery is referred to as ventricular ejection (right ventricle). Although the preload can influence the force of ventricular contraction during this period, ventricular ejection itself is not directly impacted by it.

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Answer:

Biodiversity refers to the diversity of life on Earth at all stages, from genes to habitats, which may include genetic, geological, and cultural mechanisms that keep life going. Biodiversity encompasses all living things, from humans to bacteria, fungi, and invertebrates, and contains animals that are rare, threatened, or endangered.

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Answer:

yes

Explanation:

Pretty much is only with breathing. If a person has asthma, the inside of these airways is irritated and swollen. Asthma can cause shortness of breath, wheezing, coughing, and tightness in the chest. For some people, asthma symptoms only appear when they are exposed to something that irritates their breathing. Others have a kind of asthma that makes breathing difficult all of the time.

The middle portion of the upper lip forms due to the merging of processes the Middle nasal process and the Frontal process. The correct answer is e) a and b

During embryonic development, the face forms through the fusion of several facial processes. The processes involved in the formation of the upper lip are:

a) Middle nasal process: The middle nasal process develops in the midline and contributes to the formation of the central part of the upper lip.

The Frontal process extends from the forehead region down towards the upper lip area, while the Middle nasal process develops in the midline. Their fusion forms the central portion of the upper lip.

The Mandibular process (c) contributes to the formation of the lower jaw rather than the upper lip. The Lateral nasal process (d) gives rise to the sides of the nose.

Therefore, the correct answer is f) a and d, which indicates that the merging of the Middle nasal process and the Frontal process forms the middle portion of the upper lip.

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Answer:

i answered already, but i can again the correct answer is d

Explanation:

Explanation:

VR is 5 means that the load moved is five times the effort applied and the distance moved by the effort is five times the distance moved by the load at the same time interval.

I hope it helps you

Answer:

The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle

Answer:

1.nucleus

2.?

Explanation:

hope it'll help

Answer:DNA is found in the cytoplasm of prokaryotic cells and in the nucleus of eukaryotic cells.

Explanation:

Answer:

A. Cutting  down of large swaths of trees

Explanation:

Answer:

no

Explanation:

Answer:

yes

Explanation:

the Italians will be furious!! You will have no pasta and the ferret will scratch your face. PLEASE GIVE THEM YOUR CROWBAR! I BEG YOU! YOU DON'T WANT TO SEE THE ITALIANS ANGRY

Answer:

A competitive firm’s marginal revenue always equals its average revenue and price. This is because the price remains constant over varying levels of output. In a monopoly, because the price changes as the quantity sold changes, marginal revenue diminishes with each additional unit and will always be equal to or less than average revenue. A conclusion is the last paragraph of your essay, or, if you’re writing a really long essay, you might need 2 or 3 paragraphs to conclude. A conclusion typically does one of two things—or, of course, it can do both: Summarizes the argument. Some instructors expect you not to say anything new in your Hydro-power is the energy harnessed from running water-streams, rivers or any other artificial or natural water flow. It is one of the oldest method of energy production. Even in the medieval period, people used to derive energy from water wheels. The contribution of hydel power in the world en­ergy production scenario is immense and ever-increasing.

Hydro-electricity now contributes nearly 7% of global electricity production when only 15.3 percent of the global exploitable hydro-electric potential is being used. Ever increasing awareness of ecology and social costs of hydro-plant construction failed to debar the increas­ing use of hydro-electricity.

Explanation:

Explanation:

this is just what is in my mind

Answer:

Introduction/Hook- Begin with a question based on the article. Give at least with three reasons of you position. Give your thesis.

Body- Explain three reasons of why is good or bad idea to invest in hydroelectric energy.

Provide evidence and explain it in each paragraph.

Conclusion- This the last chance to convince the reader to agree with your statement. Do not rewrite the reasons. You can restate your thesis.

If it is an argumented essay, provide the counterclaim (the other side opinion)and prove them that your statement is better.( this usually is the last paragraph of the body)

Explanation:

I'm not good at essays, but I know the basics.

I hopes this helps.