in which environment do you least expect to find nitrogen-fixing bacteria?

The three classes of Bryophyta are liverworts (Marchantiopsida), mosses (Bryopsida), and hornworts (Anthocerotopsida), while the three classes of Phylum Bryophyta are the mosses (Bryopsida), liverworts (Marchantiopsida), and hornworts (Anthocerotopsida).

All three classes of Bryophyta lack a vascular system, meaning that they do not have specialized tissues for the transport of water and nutrients. Instead, they absorb water and nutrients directly from their environment.

The structure of the thallus, or body, of each class differs. Liverworts have a flattened thallus with no differentiation into stem or leaves, while mosses have a differentiated stem and leaves, and hornworts have a thallus with both differentiated leaves and a distinct horn-like structure.

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Answer:

D

Explanation:

In the S phase, DNA replication takes place. In a cell cycle, the S phase, or synthesis phase, comes after the G1 phase. Hence, option b is the correct answer.

The cell cycle consists of four phases, such as the G1 phase, S phase, G2 phase, and M phase. Before entering the G1 phase, the cell remains in the G0 phase. G0 is the resting phase, and the cell prepares itself to enter the cell cycle. In the G1 phase, the cell grows in size. In the S phase, DNA replication takes place. In the G2 phase, further growth takes place of the cell. In M phase cell divides.

Hence, option b is the correct answer, as DNA replication takes place in the S phase.

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Answer:

When bacteria develop fortifications against the antibiotics that are developed to eradicate them it is termed as antibiotic resistance. Antimicrobial resistance is not only applicable to bacteria, but it is also applicable to other germs like fungi or viruses. There are various ways by which bacteria develop confrontation against antibiotics.  

Some bacteria are naturally resilient due to the nonexistence of the target that the antibiotic attacks or due to a remarkably impervious cell membrane. Some of the bacteria possess the tendency to generate enzymes, which can incapacitate antibiotics at the time of acquaintance. In some of the situations, bacteria can change the target of the antibiotics, making the antibiotic inefficient. The generation of efflux pumps in some of the bacteria makes antibiotics to get transport out of the bacterial cell.  

The antibiotics are not efficient against viral infections like influenza, colds, bronchitis, the majority of sore throats, and many ear infections and sinuses. The widespread application of antibiotics for these illnesses can generate the spread of antibiotic resistance.  

Answer:    Genes are made up of DNA

Explanation:   Genes are made up of DNA . to be more precise each gene is   made out of possibly  25 000 dna to 2 million dna.

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project estimated that humans have between 20,000 and 25,000 genes.

Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.

Answer:

Explanation:

Place your arm on a desk or table top with your hand resting on the edge. Your thumb and forefinger need to be projecting over the edge and about 2cm apart.

Your LC, friend or family member will hold the meter stick in a vertical position so that the zero end of the meter stick is halfway between your thumb and forefinger. The holder of the stick will drop it without warning you. You are to catch the meter stick as soon as possible after it has been released. Record on the data table the number of centimeters the meter stick dropped before you caught it.

Repeat the procedure 9 more times.

Repeat the procedure in steps 2 and 3 but this time close your eyes and have your LC, friend or family member tell you the moment the meter stick is dropped. Repeat this 9 more times and record the data in the data table.

Repeat the procedure in steps 2 and 3 but this time use a tactile stimulus. Have your LC, friend or family member touch you as soon as the meter stick is dropped. Be sure your eyes are closed. Repeat 9 more times an

Based on the high levels of H+ in John's urine analysis, it can be predicted that the pH of his blood would be low, meaning that the component of his blood that would be low is pH.

Urine analysis is a standard diagnostic test used to assess the presence of abnormalities in the urine. The presence of high levels of H+ in the urine indicates that the individual has acidic urine and therefore low blood pH. Acidic urine can cause a decrease in the pH of blood and can lead to various problems such as metabolic acidosis, kidney stones, and gout. The pH of blood is typically between 7.35 and 7.45.

Urine analysis is one of the most widely used diagnostic tests in clinical settings. It is a non-invasive test that can be used to detect a variety of abnormalities in the urine. The presence of high levels of H+ in the urine indicates that the individual has acidic urine and low blood pH. A low pH of blood can have several implications for an individual's health, including metabolic acidosis, kidney stones, and gout. When the pH of the blood is low, the electrolytes in the blood such as potassium, sodium, calcium, and magnesium can be affected. This can cause a variety of symptoms such as muscle weakness, fatigue, and confusion. Additionally, the low pH of the blood can also affect the oxygen-carrying capacity of the blood and lead to hypoxemia. Therefore, it is crucial to identify and treat the underlying cause of low pH to prevent further complications.

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Gas exchange

The respitory and cardiovascular systems work to bring oxygen to cells and remove carbon dioxide by gas exchange. We inhale air through our lungs then it passes into our bloodstream to be used in respiration... and carbon dioxide is a waste product so it passes out of the blood and then is breathed out. Then the gases (Cabron dioxide and oxygen) pass in or out of the blo0dstream by diffusion.

Hope this helped ya have a good day bro cya)

The statement describes an experimental procedure a scientist could have conducted is twenty tadpoles are exposed to a pesticide, and after three weeks, the same 20 tadpoles are exposed to a different pesticide. The correct option is C.

An experiment is a planned procedure that is done by taking variables. The variables are used in a controlled amount, then the result is noted down.

The control experiment will be in which the variables and the changes will be controlled. The pesticide's amount can be controlled that is given to the tadpoles.

Thus, the correct option is C.

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We can confirm that a segment of DNA that codes for RNA and can vary in length from a few hundred to as many as two million base pairs in length best defines a gene.

To expand on the definition given, we can say that a gene is, as mentioned, a series of base pairs known as nucleotides that will code for RNA. The RNA in question is messenger RNA that will later become a protein. Through this process, genes code for every aspect of an organism and will determine its morphology and all other biological aspects.

Therefore, we can confirm that a segment of DNA that codes for RNA and can vary in length from a few hundred to as many as two million base pairs in length best defines a gene.

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Answer:

i guess "motor neuron" is the answer

Explanation:

the different particles would enter the root hair cell by osmosis.

Osmosis can be  the passive process where the molecules move from the region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane with out expenditure of external energy.

Gases and  liquids are solvent undergo the process of osmosis; It can be Endosmosis where a substance in a hypotonic solution, the solvent molecules move inside the cell and the cell becomes turgid by a process  of DE plasmolysis.

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Answer:

Frog skin is composed of an epidermal and dermal layer, containing resident immune cells throughout the layers. The epidermis is comprised of stratified squamous epithelial cells in three distinct layers: the stratum corneum (1), stratum spinosum (2), and stratum germinativum. Dec 18, 2018

Explanation:

Answer: c) Groups such as communities or towns cannot be treatment units.

Explanation:

Answer:

The answer is Cellular Respiration

The agent that requires an in-line filter and non-polyvinyl chloride tubing for administration is Busulfan.

What is Busulfan? Busulfan is a medication that is used in chemotherapy to treat various types of cancer. It is a cell cycle non-specific alkylating agent, which means it is active throughout the cell cycle, and it can harm cells at any point during their cycle.

Alkylating agents function by adding alkyl groups to DNA molecules' guanine nucleotide bases, resulting in the cells' DNA being unable to replicate or divide. This causes the cells to die.

What is PVC tubing? Polyvinyl chloride (PVC) is a type of plastic that is frequently utilized in medical devices like tubing, bags, and infusion sets. In healthcare settings, PVC is a popular choice because it is inexpensive, light, and clear, making it simple to see the contents of the tube or bag.

PVC, on the other hand, may cause health issues in patients if it comes into contact with certain chemicals. In addition to PVC tubing, filters are used to prevent contaminants from entering the patient's bloodstream and causing infections. Certain drugs are associated with a higher risk of particle contamination, necessitating the use of filters.

The agent that requires an in-line filter and non-polyvinyl chloride tubing for administration is Busulfan.

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Biogeochemical cycles move through abiotic and biotic regions.

They are the connection and movements

that exist between living elements (biotic

factors) and non-living elements (abiotic

factors) in order for energy to flow.Biotic and abiotic factors are what make up ecosystems. Biotic factors are living things within an ecosystem; such as plants, animals, and bacteria, while abiotic are non-living components; such as water, soil and atmosphere. The way these components interact is critical in an ecosystem.Both these components are reliant on each other. Suppose if one of the factors is removed or altered, its repercussions will be faced by the entire ecosystem. Without a doubt, abiotic factors directly affect the survival of organisms.

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The area just above the smooth, rounded or oval articular process of a bone is termed a condyle.

A condyle is a rounded prominence that typically forms part of a joint. It is usually smooth and has a convex surface that articulates with another bone, allowing for movement and articulation between the bones. Condyles can be found in various parts of the body, such as the knee, elbow, jaw, and fingers.

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Answer:

lysosome

Explanation:

Lysosomes

The lysosome is an organelle that contains digestive enzymes and acts as the organelle-recycling facility of an animal cell. ...

Lysosomes can also digest foreign particles that are brought into the cell from outside. ...

Plants cells are unique because they have a lysosome-like organelle called the vacuole.

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Answer:

-It allows them to get energy and make them grow/develop.

-It helps get rid of their waste products

Mammals, birds, and reptiles are all vertebrates, meaning they have a backbone. As such, their embryos and skeletons show similarities in their basic body plan, with the same types of bones and organs in similar positions.

Vertebrates are a subphylum of animals that possess a backbone or spinal column. They are characterized by the presence of a notochord, which develops into the spinal column, and a dorsal nerve cord. Vertebrates include fish, amphibians, reptiles, birds, and mammals, and they are some of the most diverse and complex animals on the planet. They exhibit a wide range of adaptations that allow them to thrive in various environments, from the deep sea to the highest mountains.

Here,

For example, all three groups have a similar pattern of limb bones - a single bone in the upper arm or thigh, two bones in the forearm or lower leg, and multiple small bones in the hand or foot. They also have similar structures for the heart, lungs, and other internal organs. These similarities suggest that all three groups of animals evolved from a common ancestor with this basic body plan. Over time, each group evolved unique adaptations that allowed them to thrive in different environments and ecological niches. Mammals, for example, evolved hair, mammary glands, and the ability to regulate their body temperature internally. Birds evolved feathers, lightweight bones, and a highly efficient respiratory system that allows them to fly. Reptiles evolved tough, scaly skin, and adaptations for conserving water in dry environments. Despite these differences, mammals, birds, and reptiles share many basic biological processes, such as DNA replication, protein synthesis, and cell division. This further supports the idea that they share a common ancestry and have similar genetic blueprints that have been modified over time by evolution.

In summary, the similarities among mammals, birds, and reptiles suggest that they all descended from a common ancestor with a basic body plan that included a backbone and certain internal organs and structures.

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(a) Nature and nurture:

Nature refers to the biological or genetic factors that influence development, while nurture refers to the environmental or experiential factors that influence development. In other words, nature is what we are born with and nurture is what we experience in our environment.

(b) Continuity and discontinuity:

Continuity refers to the idea that development is a smooth and gradual process, while discontinuity refers to the idea that development is a series of abrupt changes or stages.

Continuity theorists believe that individuals develop gradually and continuously over time, while discontinuity theorists believe that individuals develop in distinct stages with qualitative differences between each stage.

(c) Stability and change:

Stability refers to the idea that individuals' characteristics and traits remain consistent over time, while change refers to the idea that individuals' characteristics and traits can change over time.

Stability theorists believe that individuals' personalities and behaviors remain relatively stable throughout their lives, while change theorists believe that individuals can change significantly over time.

Current life-span developmentalists don't adopt extreme positions on these 3 issues because they recognize that development is a complex and multifaceted process that is influenced by both nature and nurture, involves both continuity and discontinuity, and includes both stability and change.

In other words, they recognize that development is not either/or, but rather a combination of both sides of these issues.

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Proteins are composed of amino acids as monomers.

Proteins are the macromolecules that make the most essential component required by the body. The proteins can have 4 levels of structure: primary, secondary, tertiary and quaternary. The actual structure  of protein depends upon its primary structure which is composed of a linear chain of amino acids.

Amino acids are the chemical compounds involved in the formation of proteins. There are total 22 amino acids involved in protein making. Out of these some are essential while others are non-essential. The criteria of essentiality is decided is the body can make the amino acid on its own or not. If the body can make the amino acids, it is non-essential.

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The formula for the binomial distribution is:

Where:

The binomial distribution is a useful tool for calculating the probability of a specific number of successes in a set of trials. It is commonly used in fields such as genetics, where it can be used to calculate the probability of a specific genetic outcome occurring in a population.

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(b). Solar panels would be the best energy system options for Anna's farm based on her criteria.

Anna's list of criteria for her new energy system includes renewable source, not too loud, no harmful emissions or waste, and does not need water access.

Based on these requirements, gas furnace and hydroelectric dam are not suitable options.

Solar panels or wind turbines are the best options for Anna's farm as they are renewable sources of energy, do not produce harmful emissions or waste, and do not require water access.

Additionally, they are relatively quiet compared to other energy systems.

Ultimately, the choice between solar panels or wind turbines will depend on factors such as location, available space, and energy needs.

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Carbon is lighter, and therefore its bonds are stronger reason is most probable for why carbon is used in living organisms but not silicon.

Similar to hydrogen, oxygen, lead, and all the other chemical elements listed in the periodic table, carbon is an element. An extremely common element is carbon.  As in diamonds and graphite, it can exist in pure or almost pure forms, but it can also interact with other elements to form molecules. The fundamental components of people, animals, plants, trees, and soils are these carbon-based molecules.

Some greenhouse gasses, such CO2 and methane, as well as fossil fuels, which are mostly composed of hydrocarbons, contain carbon-based compounds (molecules consisting of hydrogen and carbon).The phrase "carbon footprint," which defines the entire amount of greenhouse gasses released as a result of a specific action, also uses the word "carbon."

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Answer:

Carbs

Explanation:

Carbohydrates are used for energy (glucose).

Answer:

The answers are

endoskeletons and a backbone

highly developed senses and nervous systems

Hope this helps you

Needs identification is one of the most important aspects of fleet management as it allows an organization to identify its needs, requirements, and limitations with regards to the fleet. VW is taking a stance to reduce its carbon emissions, and the organization is selective with the transportation modes used that can utilize Biofuels.

The first application point is that needs identification is critical to ensure that the transportation modes used are environmentally friendly. This is because identifying the need to reduce carbon emissions in the case study has led VW to switch to biofuels, which have a significantly lower carbon footprint than traditional fuels.

The second application point is that needs identification is essential to minimize the total cost of ownership of a fleet. Identifying the need for environmentally friendly transportation modes allows the company to save money on fuel costs, maintenance, and replacement of vehicles in the long run, ultimately increasing profitability. The move by VW to use biofuels is definitely a step in the right direction of reducing carbon emissions.

Biofuels produce fewer emissions than fossil fuels, and they are also renewable. They are therefore more sustainable and better for the environment in the long run. Additionally, the use of biofuels could also lead to VW getting more customers as people have become increasingly environmentally conscious and are likely to be drawn towards companies that prioritize environmental sustainability.

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