muscles react to stimuli with graded responses. these responses determine how much a muscle will ______ during contraction.

Answer:

Invasive species consume limited resources and become competitor of native species in a given ecosystem

Explanation:

Invasive species are the outsider species introduced in any given ecosystem. These invasive  species become a competitor with the native species of that ecosystem for limited resources and hence deplete the limited resources at a faster pace thereby leaving all other species at the risk of dying.

Answer: fox

Explanation: due to its thinking capability and smartness

The structural features of alveoli make them an ideal place for gas exchange due to their large surface area and thin walls.

Alveoli are tiny, balloon-like structures found in the lungs. They are surrounded by an extensive network of capillaries, where the exchange of gases takes place. The large number of alveoli in the lungs provides a significantly large surface area for gas exchange to occur. This increased surface area allows for a greater amount of oxygen to diffuse into the bloodstream and carbon dioxide to be removed efficiently. Furthermore, the walls of the alveoli are extremely thin, consisting of a single layer of epithelial cells. This thinness enables gases to diffuse quickly across the alveolar membrane. The close proximity of the alveolar walls to the capillaries allows for a short diffusion distance, ensuring a rapid exchange of gases. Overall, the combination of the large surface area and thin walls of alveoli maximizes the efficiency of gas exchange in the lungs, facilitating the uptake of oxygen and the removal of carbon dioxide from the bloodstream. This ensures an adequate oxygen supply for cellular respiration and the elimination of waste gases produced by metabolic processes.

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The initiation of DNA synthesis during replication is initiated by the unwinding of the double-stranded DNA helix at the replication fork, which is catalyzed by helicases. This unwinding creates a single-stranded template that is available for the recruitment of the replicative machinery.

How to initiate DNA synthesis?

To initiate DNA synthesis, a short RNA segment is synthesized by an RNA polymerase known as primase. Primase synthesizes a short RNA primer, which serves as a starting point for the extension of the newly synthesized DNA strand by a DNA polymerase.

The DNA polymerase is then able to add new nucleotides to the 3' end of the RNA primer, extending the newly synthesized DNA strand and displacing the RNA primer. The RNA primer is eventually degraded, and the remaining gap is filled in by the DNA polymerase.

This process of priming and extension is repeated multiple times, leading to the continuous synthesis of new DNA strands along the entire length of the replication fork. The resulting daughter DNA molecules are then ligated by a ligase, forming a continuous, double-stranded DNA molecule.

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The correct option is b. Interference Competition.

A pack of hyenas and lions physically fighting over the carcass of a wildebeest is an example of interference competition.

Interference competition occurs when organisms directly interact and interfere with each other's access to resources. In this case, both hyenas and lions are vying for the same food source, the wildebeest carcass. The physical fight between the two groups demonstrates their active interference in accessing the resource.

Hyenas and lions are both opportunistic predators that compete for prey in their shared ecosystem. While hyenas are known for their scavenging abilities, they are also capable hunters. Lions, on the other hand, are skilled predators that primarily hunt large herbivores. Both species rely on the availability of food sources, and when their preferred prey, such as the wildebeest, is limited, competition intensifies.

Therefore, the correct option is b. Interference Competition.

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enzymes control metabolic activity of cells

Answer:

The dependent variable is the student's heart rate

Explanation:

the student heart rate is what is being observed in relation to the type of music being played.

Scientists discovered that stars in the universe are mostly composed of hydrogen and helium. The correct option is A.

A star is made up of gases like hydrogen and helium. They are spherical and shine from the sky. The nearest star is the sun. All other stars are very far away from the planets, that is why they seem small.

They are celestial bodies made up of hydrogen and helium, and they produce heat and energy.

Thus, the correct option is A. hydrogen and helium.

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The urea concentration in blood can be compared between the two treatment groups by analyzing the results of a blood test. The blood test will measure the amount of urea in the blood of each treatment group and compare the results.

If the urea concentration is higher in one treatment group compared to the other, this may indicate that the treatment is affecting the kidneys' ability to filter waste products from the blood. A higher urea concentration may also indicate that the treatment is causing an increase in protein breakdown, leading to an increase in urea production.

On the other hand, if the urea concentration is lower in one treatment group compared to the other, this may indicate that the treatment is improving kidney function or reducing protein breakdown.

It is important to note that other factors, such as hydration levels and diet, can also affect urea concentration in the blood. Therefore, it is important to consider these factors when comparing the urea concentration between the two treatment groups.

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Answer:

B

Explanation:

Most logical answer.

answer: CTA GGT

it's obvious.

hope it helps.

XD❤️

think before answering

Total of 8 different haploid cell genotype could be created by independent assortment in diploid cell with the genotype rryypp.

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Answer:

There is no attached photo in this question, however, the question can still be answered. The question also lacks options; they are

A.Comparative B. Descriptive. C. Controlled. D. Experimental

The answer is D. Experimental investigation

Explanation:

There are three types of investigations in science namely: descriptive, comparative, and experimental investigations. Experimental investigations are those investigations that has to do with the testing of how one variable affects another.

In an experimental investigation, a variable called INDEPENDENT VARIABLE is changed to effect a response in another variable called DEPENDENT VARIABLE. In this question, a group of students is testing to see if earthworms prefer rough or smooth surface. Hence, they are testing to see how texture of a surface (rough or smooth), which is the independent variable affects the preference of earthworm. Hence, it is an EXPERIMENTAL VARIABLE.

Answer:

The answer is Comparative

Answer:

The correct statement is : Most prokaryotes live in communities

Explanation:

Electron microscopes are normally shows color of specimen in black and white. The part of the specimen passed through the electron appears white and rest of the part in black.

Flagella found in various microscopic organism such as protozoa, bacteria, archaea and some other eukaryotes for cell movement. Most of the prokaryotes are found in the colonies form however, these are unicellular entities but shows community formation. Plant cell does not require lysosomes as they have vacuoles for the function of lysosomes.

Thus, the correct statement is : Most prokaryotes live in communities.

The degree in which a star appears to move in one hour is 15° and is denoted as option C.

This is referred to as the circular movement of an object around a central axis such as that of the earth which rotates on its axis once a day.

Since the earth rotation takes about  23 hours and 56 minutes and is at an angle of  361° then we can calculate the per hour by the following below:

Since 24 hours = 1 day

Then 361°/24 = 15° then the number of degrees will a star have appeared to move in one hour.

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Answer:

Science Question: When the plant is exposed to light for longer periods of time, it's height increases more than those plants that weren't exposed to light for as long.

Control: I think the control would be a plant that was exposed to light for 24 hours (all day). Not completely sure, but that's what i would say. (If you aren't sure what a control is, it's just a sample that you don't change at all. It's used to compare other samples' results.)

The nervous system is a regulatory system that centrally controls most body functions.

The nervous system consists of the brain, spinal cord, and nerves, and it plays a crucial role in maintaining homeostasis and coordinating various bodily activities. It receives sensory input from the external environment and internal body systems, processes this information, and sends out appropriate signals to different parts of the body to carry out specific actions or adjustments. This system is responsible for controlling essential functions such as heart rate, breathing, digestion, and movement. It also allows us to sense and respond to our surroundings, think, learn, and experience emotions.

In summary, the nervous system is the regulatory system that governs and coordinates most body functions, ensuring proper communication and coordination between different organs and systems to maintain overall health and well-being.

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Answer: B llegal dumping

Explanation:

Answer:

BTS DNA

Explanation:

ur ma su my love ni uryo uro ni ani ni ka ur wan sam dalla baby. yeong wonhi yeong wonhi yeong wonhi hari nika

When a gene encodes a polypeptide containing 120 amino acids, 360 nucleotides are required in the mRNA to encode that polypeptide.

Each codon of the mRNA molecule consists of 3 nitrogenous bases because it is called a triplet, and each nucleotide consists of 1 nitrogenous base, 1 pentose sugar, and 1 phosphate so if there are 3 nitrogenous bases it can be said that there are also 3 pentose sugars and 3 phosphates which produce 3 nucleotides at each codon. So that it can be concluded that each codon consists of 3 nucleotides.

Thus, each amino acid is defined by three consecutive nucleotides (i.e., codons) so that if there are 120 amino acids, it is defined by 360 nucleotides (120 x 3 = 360 nucleotides).

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Mycelia are the filamentous mats that the majority of fungi produce. So the correct option is C . The tiny branching structures that resemble threads, or hyphae, come together to form mycelium.

They are distinguished by hyphae, which are vegetative filamentous cells. The thallus (vegetative body) of the fungus is made up of mycelium and consists of a mass of hyphae.

Whereas dematiaceous fungi are yeast or filamentous fungi that are darkly colored, hyaline hyphomycetes, such as Aspergillus fumigatus, are septate molds that lack pigment in their hyphae.

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Percentage of children to be color blind- 50%

Percentage of children to be normal- 50%

Genotypes of F1 generation: XCXc , XcXc, XCY, XcY

Explanation:

If we cross multiply these genotypes XCXc and XcY, the resulting offspring would be:

XCXc – normal vision female- 25%

XcXc – colorblind female- 25%

XCY – normal male- 25%

XcY- color blind male- 25%

3’ TACGGCTTAACC 5’ based on knowledge of DNA replication, the correct complementary strand synthesized by DNA polymerase is

5’ ATGCCGAATTGG 3’ (option -c) is correct answer.

There are three main steps in the replication process: priming the template strand, assembly of the new DNA segment, and opening of the double helix and separation of the DNA strands. The DNA double helix's two strands uncoil during separation at a specific spot known as the origin.

Additionally, in vitro DNA replication (DNA amplification) is possible (artificially, outside a cell). Starting DNA synthesis at recognized sequences in a template DNA molecule is possible using artificial DNA primers and cell-isolated DNA polymerases.

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Answer:

here's your answer hope it helps you

Explanation:

the strength of magnet increase with increasing number of turns in the coil.

the strength of the electromagnet is directly proportional to the number of turns in the coil. if you double the number of turns, you double the strength of the electromagnet.

The number of wire coils on an electromagnet affects the strength, as the strength is directly proportional to the number of turns in the coil.

An electromagnet is a type of magnet where an electric current creates a magnetic field. The wire that makes up an electromagnet is typically twisted into a coil. A magnetic field is produced by a current flowing through the wire and is concentrated in the hole at the center of the coil.

As the coil's turns grow, the magnet's strength does as well. The coil's number of turns directly relates to the electromagnet's strength. The electromagnet's strength doubles when the number of rotations is doubled.

Therefore, since the strength is inversely related to the number of turns in the coil, the number of wire coils on an electromagnet affects its strength.

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Answer:

yes it can cause changes to metal

Answer:

No.

Explanation:

The metal can't change because light is not a physical thing. the metal can change by getting warm and/or changing color, because different types of light can cause different changes to a material when they are absorbed.

// have a great day //

Answer:

Transformation can play a big role in frightening stories because transformation in and of itself can be frightening. This process involves the unknown and a loss of control, two things that very much tend to frighten human beings who prefer the familiar and secure.

In bioethics, there is substantial agreement on the general moral principles that should apply to human research, which are autonomy, beneficence, and justice.

The principles of autonomy, beneficence, and justice are widely recognized as the foundational moral principles that should guide human research.

Autonomy refers to respecting individuals' right to make their own informed decisions and participate voluntarily in research. It emphasizes obtaining informed consent from participants and ensuring their autonomy is upheld throughout the research process.

Beneficence involves promoting the well-being of research participants and minimizing potential harms. It requires researchers to maximize the potential benefits of the research while minimizing risks and ensuring that the research design is scientifically sound.

Justice pertains to the fair distribution of the benefits and burdens of research. It includes considerations of equitable participant selection, fair access to research opportunities, and the avoidance of exploitative practices.

These three principles together provide a framework for ethical decision-making in human research, ensuring respect for individual autonomy, promoting well-being, and upholding fairness.

While there may be different interpretations and applications of these principles in specific cases, their importance and general acceptance in bioethics are widely recognized.

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The probability that a randomly selected potential traveler will fall within the permitted height range is approximately 0.8186. The probability that a randomly selected group of 25 travelers will all be within the permitted height range is approximately 0.1544. The probability that a randomly chosen group of 25 travelers is underneath the weight limit is approximately 0.0014.

To find the probability that a randomly selected potential traveler falls within the permitted height range, we can calculate the area under the normal distribution curve between the given height limits. Using the Z-score formula, we can standardize the height range and then use the standard normal distribution table or a calculator to find the corresponding probabilities. The result is approximately 0.8186.

To calculate the probability that a group of 25 travelers will all be within the permitted height range, we need to consider the probability of each individual being within the range and then multiply those probabilities together. Since the heights of individuals are independent, we can use the multiplication rule for independent events. The probability that an individual is within the range is approximately 0.8186, so the probability that all 25 individuals are within the range is (0.8186)^25, which is approximately 0.1544.

Step 3: To determine the distribution of the mean weight of a sample of 25 travelers, we need to consider the central limit theorem. According to the theorem, if the sample size is large enough (typically n ≥ 30), the distribution of sample means will be approximately normal, regardless of the shape of the population distribution. The mean weight of the sample will still have a mean of 78kg, but the standard deviation will be the population standard deviation divided by the square root of the sample size, which in this case is 4kg/sqrt(25) = 0.8kg. Therefore, the distribution of the mean weight will be a normal distribution with a mean of 78kg and a standard deviation of 0.8kg.

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Infrastructure is a barrier to the economy of sub-Saharan Africa because inadequate and poor-quality infrastructure, including transportation, energy, and communication systems, limits productivity, hinders trade, and increases the cost of doing business, making it difficult for businesses to operate efficiently and the region to attract foreign investment.

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Antidiuretic hormone also known as Vasopressin directly controls the reabsorption of water in the collecting duct.

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