which is not true of smooth muscles?A.) They use peristalsis to move substances through tubesB.) They form structures like blood vessels in the small intestineC.) They quickly become fatiguedD.) They are connected by Gap junctions

Answer:

B) One scientist carries out the same experiment performed by another scientist to validate the results.

Explanation:

repetition definition is basically B.

One scientist carries out the same experiment performed by another scientist to validate the results. Therefore, option (B) is correct.

Repetition in science is the process of repeating an experiment or study to verify or validate the results. This is done to ensure that the results are accurate and reliable, and not due to chance or experimental error.

An example of repetition in science is when one scientist carries out the same experiment performed by another scientist in order to validate the results and confirm that they are accurate and consistent. This process helps to build confidence in the results and increases the credibility of the scientific findings.

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Increased levels of salicylic acid in vascular tissue fluid suggest it's important for systemic signaling and defense against TMV.

The observation that levels of salicylic acid increase in the vascular tissue fluid of a plant when a single leaf is infected with TMV suggests that salicylic acid is important for systemic signaling in response to TMV infection, activating the plant's defense response.

Systemic acquired resistance (SAR) is a defense mechanism in plants that provides protection against future pathogen attacks. Salicylic acid is proposed to be an important hormone for the activation of SAR in response to infection by tobacco mosaic virus (TMV). The observation that levels of salicylic acid increase in the vascular tissue fluid of a plant when a single leaf is infected with TMV suggests that salicylic acid is involved in the systemic signaling process that activates the plant's defense response. This allows the plant to mobilize a rapid and effective defense response against future pathogen attacks.

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The two characteristics that are limitations of the student's model are:

A. The model is much smaller than a real river.

B. The model is missing plants, fish, and other details found in a real river.

The first limitation of the student's model is that it is much smaller than a real river. A sandbox model cannot accurately represent the scale and size of a natural river system. Real rivers can span for miles with varying widths and depths, while a sandbox model is limited in size and cannot capture the full complexity of a river's dimensions.

The second limitation is that the model is missing plants, fish, and other details found in a real river. A real river ecosystem consists of diverse flora and fauna, including vegetation along the riverbanks, aquatic plants, fish, insects, and other organisms. These elements play crucial roles in the functioning and dynamics of a natural river system. However, the student's model does not include these essential components, limiting its ability to represent the complexity and ecological interactions present in a real river.

The model soil is not like the soil found in a real riverbed. In natural riverbeds, the soil composition is influenced by geological processes, weathering, sedimentation, and organic matter deposition. The pile of sand used in the student's model may not accurately mimic the intricate mixture of soil and rock particles found in a real riverbed, thereby limiting the model's ability to replicate the diverse characteristics and interactions within the soil environment.

Although not explicitly mentioned in the question, it is worth noting that the model river water flows downhill instead of uphill like real river water does. This discrepancy can be considered a limitation if the student's intention was to replicate the natural flow of water in a river. However, if the focus was solely on demonstrating the concept of water movement, this limitation may be less significant.

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Answer:

ACTH, or Adrenocorticotrophic hormones.

Explanation:

They stimulate the production of a " stress " hormone, cortisal, and it maintains blood pressure and blood sugar levels.

p.s. thanks internet :)

Answer:

The two white sheep could have genetics of its ancestors.

Explanation:

Lets use a punnett square (file attached)

W = White

w = Black

The parents of the baby sheep could still have the recessive trait (w) in the genes making a chance of the baby being black.

During the aerobic oxidation of carbohydrates, acetyl-CoA is produced through a series of metabolic reactions known as glycolysis and the citric acid cycle. During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation.

Pyruvate then enters the mitochondria, where it undergoes further processing to produce acetyl-CoA. This conversion occurs through a process called pyruvate decarboxylation, where pyruvate loses a carbon dioxide molecule and combines with coenzyme A (CoA) to form acetyl-CoA. Acetyl-CoA is a key molecule in energy metabolism and serves as a precursor for the citric acid cycle.

During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation. Fatty acids are broken down into two-carbon units, which then combine with CoA to form acetyl-CoA. This process occurs in the mitochondria, where fatty acids are sequentially cleaved into acetyl-CoA molecules. The acetyl-CoA molecules can enter the citric acid cycle to generate energy through oxidative phosphorylation.

Once acetyl-CoA is produced, it enters the citric acid cycle, also known as the Krebs cycle or TCA cycle. In this cycle, acetyl-CoA undergoes a series of enzymatic reactions, resulting in the production of ATP, NADH, and FADH2. These energy-rich molecules are then utilized in the electron transport chain to generate ATP through oxidative phosphorylation.

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The advantage that rabbits with floppy ears have over rabbits with straight ears is not entirely clear, and there are different hypotheses that attempt to explain this trait.

What is Floppy Ears?

Floppy ears refer to ears that hang down rather than standing upright. This trait is commonly observed in some dog breeds, such as Basset Hounds, and in rabbits, such as the lop-eared breed.

In rabbits, the floppy ear trait is caused by a genetic mutation that affects the development of cartilage in the ear. Normally, the ear cartilage is strong enough to support the weight of the ear and keep it standing upright. However, in rabbits with the mutation, the cartilage is weaker and less able to support the weight of the ear, causing it to flop down.

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Answer:

number two but it meant to have 3protein s follow

EOS lip balms stand out due to their innovative design, natural ingredients, variety of flavours, long-lasting formula, and commitment to quality and user satisfaction.

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Note: The correct question would be as

What are the key advancements and improvements in EOS (Evolution of Smooth) lip balms compared to traditional lip balms?

The cells myelinates (Schwann cells) in the peripheral nervous system (PNS) forms a myelin sheath around axon, the function of the myelin is to insulating, allowing electrical pulses to transmit along the nerve cells of the PNS, these pulses are linked to the signals between the neuron cells. Therefore, the myelination of cells in the peripheral nervous system is important to promove the quickly and safe function of the neurons.

Sports leadership requires a combination of attributes such as strong communication skills, strategic thinking, a competitive spirit, and a commitment to teamwork.

The primary responsibility of sports leaders is to guide their team towards success, by setting goals, creating a positive team culture, motivating and inspiring players, and making difficult decisions.

Mo Farah and Harry Kane are two successful sports leaders who possess different but complementary attributes. Mo Farah is a long-distance runner who has won numerous Olympic and World Championship medals. He is known for his dedication, focus, and resilience, which have helped him overcome adversity and achieve his goals. He also has strong self-belief and an ability to remain calm under pressure.

Harry Kane is a footballer who plays for Tottenham Hotspur and the England national team. He is an excellent goal scorer, but also a team player who leads by example. He has excellent communication skills and is known for his ability to motivate and inspire his teammates. He also has a strong work ethic and is willing to put in extra effort to improve his skills.

Sports leaders require a unique set of attributes and responsibilities to be successful. They must possess strong communication skills, strategic thinking, a competitive spirit, and a commitment to teamwork. Additionally, they must inspire and motivate their team members, set clear goals, create a positive team culture, and make difficult decisions when necessary.

Mo Farah and Harry Kane are both successful sports leaders who possess different but complementary attributes. While Farah is known for his dedication, focus, and resilience, Kane is known for his communication skills, motivation, and work ethic. Both have strong leadership qualities and have achieved significant success in their respective sports.

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Answer: c

Explanation:

Answer:

gravity

Explanation:

because well GRAVITY!!

The process through which newly formed, immature (unspecialized) cells develop their own unique properties and grow into their specialized shape and function is called cell differentiation.

Prokaryotic cells and eukaryotic cells are two different kinds of cells. Although prokaryotic and eukaryotic cells have different structures (see prokaryote, eukaryote), they are very similar in terms of their molecular makeup and functions. Proteins, polysaccharides, and nucleic acids make up the majority of the molecules in cells.

The process of cell differentiation involves stem cells becoming more specialized. Cell differentiation is crucial because it fosters diversity in our bodies' cells as well as in life on Earth.

Therefore, it also enables cells to develop distinctive structures that are appropriate for their particular roles.

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The personal trait that prompts scientists to question the validity of an investigation is skepticism.

Skepticism is a critical and questioning mindset that scientists possess. It involves challenging assumptions, questioning methodologies, and evaluating the reliability and validity of experimental procedures and results.

In the given scenario, other scientists criticized the investigation because it failed to consider the birds' food choices using live moths, which could have provided a more comprehensive understanding of the phenomenon.

This criticism demonstrates the importance of skepticism in scientific inquiry, as scientists strive to ensure that studies are conducted with rigor, encompassing multiple perspectives, and addressing potential limitations or biases.

By being skeptical, scientists promote scientific integrity and the pursuit of accurate and reliable knowledge.

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Answer:

Geographic isolation can have a significant impact on evolution. When a population of organisms is separated from the rest of their species by a physical barrier, such as a mountain range, an ocean, or a river, they can no longer breed with individuals from the other side of the barrier. This can lead to the accumulation of genetic differences between the two groups over time, eventually resulting in the formation of two distinct species.

For example, the formation of the Isthmus of Panama approximately 3 million years ago separated the populations of marine organisms living in the Atlantic Ocean and the Pacific Ocean. As a result of this geographic isolation, the two populations of marine organisms evolved separately, developing unique adaptations to their respective environments. Today, the Atlantic and Pacific Ocean are home to distinct and diverse ecosystems, each with their own unique species of animals and plants

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Answer:  D, a pedigree.

Explanation:

Pedigrees are used to analyze the pattern of inheritance of a particular trait throughout a family.

The hypothesis is; Increasing the concentration of fertilizer will lead to an increase in plant growth.

The variables to be tested are; concentration of fertilizer and plant growth.

A hypothesis is a speculative claim or explanation put forth based on scant data and used as a springboard for additional research or trial. It is an educated guess or testable prediction regarding the correlation between two variables or phenomena.

By manipulating the concentration of fertilizer as the independent variable and measuring the resulting plant growth as the dependent variable, we can test the hypothesis and determine if there is a correlation between fertilizer concentration and plant growth.

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Answer:

Goggle

Explanation:

when plants produce only offspring of the same variety when they self-pollinate.

Answer:

Microplastics are abundant and widespread in the marine environment. They are a contaminant of global environmental and economic concern. Due to their small size a wide range of marine species, including zooplankton can ingest them. Research has shown that microplastics are readily ingested by several zooplankton taxa, with associated negative impacts on biological processes. Zooplankton is a crucial food source for many secondary consumers, consequently this represents a route whereby microplastic could enter the food web and transfer up the trophic levels. In this review we aim to: 1) evaluate the current knowledge base regarding microplastic ingestion by zooplankton in both the laboratory and the field; and 2) summarise the factors which contribute to the bioavailability of microplastics to zooplankton. Current literature shows that microplastic ingestion has been recorded in 39 zooplankton species from 28 taxonomic orders including holo- and meroplanktonic species. The majority of studies occurred under laboratory conditions and negative effects were reported in ten studies (45%) demonstrating effects on feeding behaviour, growth, development, reproduction and lifespan. In contrast, three studies (14%) reported no negative effects from microplastic ingestion. Several physical and biological factors can influence the bioavailability of microplastics to zooplankton, such as size, shape, age and abundance. We identified that microplastics used in experiments are often different to those quantified in the marine environment, particularly in terms of concentration, shape, type and age. We therefore suggest that future research should include microplastics that are more representative of those found in the marine environment at relevant concentrations. Additionally, investigating the effects of microplastic ingestion on a broader range of zooplankton species and life stages, will help to answer key knowledge gaps regarding the effect of microplastic on recruitment, species populations and ultimately broader economic consequences such as impacts on shell- and finfish stocks.

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Energy is transferred from cattails to crickets to shrews to hawks in this wetland food chain (option j).

In a wetland ecosystem, energy is transferred through a food chain consisting of producers and consumers. Cattails, being plants, are the producers that convert sunlight into energy through photosynthesis.

Crickets, as herbivores, consume the cattails, obtaining energy in the process. Shrews, being small insectivores, prey on crickets, gaining energy from them.

Finally, hawks, as apex predators, feed on shrews, acquiring the energy that has passed through the food chain. Thus, the correct statement is J, describing energy transfer from cattails to crickets to shrews to hawks.

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Answer:

Primase

Explanation:

Primer needed to initiate DNA replication is PRIMASE.

It aids replication by ensuring that a short stretch of nucleic acid are usually complementary to the template which aids the process.

It also helps to provides and make readily available the 3' end for DNA polymerase to work on during the process of replication

The long, bushy tail of the raccoon may be a selective advantage for this species because the bushy tail helps keep the face warm during a snowstorm (Option d). In addition, it may serve as camouflage and also may act to communicate with other members of the population.

An evolutionary selective advantage is a feature in a species that confer an advantage to survive and reproduce in a particular environmental condition, which may be associated such as in this case to the tail in raccoons.

Therefore, with this data, we can see that an evolutionary selective advantage is any phenotypic feature that enhances the survival and or reproductive rate of individuals in a population or species.

Complete question:

The opossum is a new arrival in southern Ontario. Its niche is similar to that of the raccoon. An opossum has a long, bare, rat-like tail. A raccoon has a long, bushy tail. How is this a selective advantage for the raccoon?

selective advantage only applies to populations

the opossum  tail can grab onto a tree for balance

tail fur does not have an impact on survival

the bushy tail helps keep the face warm during a snowstorm

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Answer:

When someone dies of “old age” or as a result of a health condition or illness, his or her death is considered a natural death; however, if this is not the case, it will instead be categorized as an unnatural death.

Explanation:

A.Balance. Three tiny, liquid-filled tubes in your inner ear called semicircular canals aid in balance by supplying the inner ear with fluid. Your body is then instructed on how to maintain equilibrium by your brain.

Small hairs that line each of the semicircular canals in your skull move as a result of the fluid inside them swirling around as you move your head. Your brain receives nerve signals from these hairs that are converted from the movement of the liquid. The fluid in your semicircular canals will continue to move a little while after you stop spinning, and even though you aren't, your hairs will continue to signal that you are spinning.

The three incredibly tiny semicircular canals' main responsibilities are to sense head position and control balance. They're thought to be a component of the vestibular system.

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 The bending the waves around objects is a common feature of both refraction and diffraction. Refraction and diffraction both involve the bending the waves through with a medium and around an object.

Correct answer option, B

A normal just at point of incidence, the refracted ray, or the incident ray all lie on the same plane. For the given pair of media, the sine of a angle of incidence I to the sine of the of refraction (r) is always constant.

1. The normal just at point of incidence, the refracted ray, and the incident ray all lie within the same plane. 2. For the given pair of media, the sine of a angle of incidence to the sine of the of refraction ratio is constant.

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Answer:

Option A and option D

Explanation:

Refraction and diffraction both involve the bending of waves.

Refraction involves the bending of waves through a medium, and diffraction involves the bending of waves around an object.