7
While visiting a historical fort, John watched a demonstration of the firing of an old cannon from a distance of 50 m. When
the cannon fired, John heard a loud boom a second later. What was the medium that allowed the sound waves to reach
John?
A the ears
B) the cannon
c) the air
D the ground

Copper

Properties

Malleable and ductile, good conductor of heat and electricity, resistant to corrosion, attractive colour, lustre

Uses

Water pipes, electrical wire, decorative goods

_____________________________________

Titanium

Properties

Good strength-to-weight ratio, light, resistant to corrosion, good conductor of heat but poor conductor of electricity

Uses

Drill bits, bicycles, golf clubs, watches and laptop computers, medical implants, jewellery, manufacturing aircraft and spacecraft

Answer So, the three main structural differences between RNA and DNA are as follows: RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.

Explanation:

Answer:

RNA is usually single stranded while DNA is usually double stranded

and

RNA contains Uracil while DNA contain Thymine

Explanation:

Answer:

it will eventually die

Explanation:

xylem helps transport water to the plant so if the xylem gets destroyed the plant will definitely lack water and die because it can't produce food

RNA polymerase, so options B and D are incorrect .MicroRNAs (miRNAs) can regulate gene expression by preventing translation through binding to mRNA and degrading the mRNA strand

. This prevents the mRNA from being translated into a protein. miRNAs can also inhibit transcription factors, which are proteins that bind to DNA and initiate transcription. However, miRNAs do not bind directly to DNA or RNA polymerase.

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Alai's salt measurement should be recorded in milligrams, as it accurately represents the mass of the salt in the mixture. Units such as millimeters, centiliters, or centimeters are not suitable for measuring salt. By using milligrams, Alai can ensure precise and standardized measurements for reliable data recording.

The reason Alai's salt measurement is incorrect is that the appropriate unit for measuring the amount of salt in a mixture is milligrams (mg), not millimeters (mm), centiliters (cl), or centimeters (cm). Milligrams is a unit of mass, which accurately represents the amount of salt added to the water. Millimeters and centimeters are units of length, while centiliters is a unit of volume, none of which are suitable for measuring the quantity of salt. Therefore, to ensure accurate data, Alai should record the salt measurement in milligrams, which is the correct unit for measuring the mass of the salt in the mixture.

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The solution used to test for reducing sugar is known as Benedict's solution.

Benedict's solution is a deep blue alkaline solution that contains copper ions. When reducing sugars are present in a sample, they react with Benedict's solution to produce a reddish-brown precipitate. The intensity of the color produced is directly proportional to the amount of reducing sugar present in the sample.

Benedict's solution is commonly used in laboratory settings to test for the presence of reducing sugars in food, beverages, and biological samples. The solution used to test for reducing sugar is known as Benedict's solution.

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The major forces that drive patterns of atmospheric movement are temperature gradients, pressure gradients, and the Coriolis effect.

Temperature gradients are created by the uneven heating of the Earth's surface, causing warm air to rise and cool air to sink, which generates winds. Pressure gradients are the result of differences in air pressure, with air moving from areas of high pressure to areas of low pressure. The Coriolis effect, a result of the Earth's rotation, deflects moving air to the right in the northern hemisphere and to the left in the southern hemisphere, influencing global wind patterns. All these forces work together to create the complex and dynamic atmospheric circulation patterns that shape our weather and climate. Uneven heating causes temperature differences, leading to air masses rising and sinking, creating convection currents. The Coriolis effect, due to Earth's rotation, causes winds to deflect, influencing global circulation patterns. Lastly, global pressure systems, like high and low pressure, direct the movement of air masses, affecting weather and climate.

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Answer:

50%

Explanation:

La información que tenemos es:

Un hombre homocigoto (ee) que carece la posibilidad de enrollar su lengua.

Una mujer heterocigota (Ee). Al tener dos copias distintas de este gen, la mujer puede enrollar su lengua ya que este es un gen dominante (E) sobre el gen recesivo (e) que impide este movimiento.

Si hacemos un Cuadro de Punnett veremos que la capacidad de enrollar la lengua en los descendientes de esta pareja tiene una probabilidad fenotípica del 50% ya que hay un 50% de probabilidades de que su descendencia tenga un genotipo Ee y otro 50% de que sea ee, lo cual se expresa en una probabilidad  fenotípica, es decir lo que se puede apreciar visiblemente como resultado de la interacción del genotipo y el ambiente, de con un 50% de poder enrollar la lengua.

  ║e ║ e

E║Ee║Ee

e║ee║ee

Answer:

En los humanos, ser un rodillo de la lengua (R) es dominante sobre un no rodillo (r). Un hombre que no es rodador se casa con una mujer que es heterocigota para rodar la lengua.

¿Cuál es la probabilidad de que esta pareja tenga un hijo que es un trabalenguas?

Explanation:

Answer:

Genotype: 25% LL, 50% Ll, 25% ll. Phenotype: 25% Long legged, 50% Medium legged, 25% Short legged. Phenotypic ratio⇒ 1:2:1. Yes, there are 50% chances of having only medium-legged chicks. Incomplete dominance is influencing leg length.

Incomplete dominance is an inheritance pattern that occurs when neither of the two involved alleles is entirely dominant over the other one. In this case, the heterozygous organism’s phenotype is different from homozygous phenotypes, and expresses as a mixture of them. This third phenotype is an intermediate between both homozygous parents.

The exposed example is a case of incomplete dominance.

Let is name the alleles as L (coding for long) and l (coding for short).

There are three possibe phenotypes,

Cross: Between two medium-legged animals

Parentals)  Ll   x   Ll

Gametes) L   l     L   l

Punnett square)    L          l

                      L     LL        Ll

                       l     Ll         ll

F1)

Offspring Genotype%

Offspring Phenotype%

Phenotypic ratio⇒ 1:2:1 ⇒ 1/4 Long : 2/4 Medium : 1/4 Short

Medium-legged cabos carry both alleles, L and l, which means that during fertilization there are

These are expected ratios, but it does not mean the progeny will obligatory express this distribution. It depends on how alleles combine during fertilization.

If by chance, when crossing two medium-legged animals, the allele combination only occur between L and l (not L-L and not l-l), then it is possible to have only medium-legged animals.

There are 50% chances of having only medium-legged chabos.

Incomplete dominance is influencing the leg length.

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Answer: Education?

Explanation: While I'm not 100% sure, I think that having an average income is going to be most helpful in keeping the infant healthy and alive, while being educated is above all extremely important, I don't think it will necessarily cause death compared to having no food, clean water, or an average income in order to gain those things. Like I said, not 100% sure. Just my take on the question.

A vaccine and an antibody are both important tools in fighting infectious diseases, but they work in different ways.

A vaccine is a substance that contains weakened or killed microorganisms or parts of microorganisms, which when administered to a person, triggers the body's immune system to produce a protective response against the disease-causing agent. The vaccine primes the immune system to recognize and fight off the infectious agent, so that if the person is later exposed to the actual disease-causing organism, their immune system is already prepared to respond quickly and effectively. Vaccines are given as a preventive measure and can be effective at preventing the spread of infectious diseases.

On the other hand, an antibody is a protein produced by the immune system in response to an infection or vaccination. Antibodies are specific to a particular pathogen, and their function is to bind to and neutralize the pathogen, or mark it for destruction by other immune system cells. Antibodies can be produced naturally by the body or synthetically in a laboratory. They can be used as a treatment for infectious diseases, especially if the person is already infected and needs immediate protection.

In summary, vaccines are used to prevent infections by stimulating the body's immune system to produce a protective response, while antibodies are used to treat infections by directly neutralizing or eliminating the pathogen.

Answer:

Indonesian

Explanation:

Indonesian is named after the island where humans spotted a dragon-like creature for the first time, the Komodo dragon is an endemic Indonesian species found on Komodo Island and its neighboring islands.

Answer:

Staphylococcus aureus, and coagulase-negative staphylococci

Explanation:

Two species of staphylococcus that are part of our normal microbiota are Staphylococcus aureus, and coagulase-negative staphylococci.

Opponents of intelligent design do indeed refer to

irreducible complexity

as an "argument from personal incredulity." This term is used to highlight the logical fallacy underlying the argument.

The concept of irreducible complexity, often associated with the work of

biochemist

Michael Behe, suggests that certain biological systems are too complex to have evolved gradually through natural selection and must therefore be the product of intelligent design.

The criticism of irreducible complexity as an argument from personal incredulity stems from the fact that it relies on one's subjective inability to envision a stepwise

evolutionary

pathway for a particular biological feature or system. Just because something is difficult to comprehend or imagine does not imply that it is impossible or requires the involvement of an intelligent designer.

The argument from personal incredulity essentially states, "I personally cannot fathom how this could have evolved, so it must not have evolved." This line of

reasoning

overlooks the vast amount of scientific evidence supporting the theory of evolution and the gradual development of complex biological structures over time.

Critics argue that when faced with complex biological systems, scientists approach the problem by investigating and studying the available evidence, constructing

hypotheses

, conducting experiments, and analyzing data to understand the mechanisms behind their evolution. The scientific method encourages a systematic investigation rather than relying on personal incredulity.

Moreover, examples once considered irreducibly complex have been explained through subsequent scientific research. Proposed examples of irreducible complexity, such as the bacterial flagellum and blood-clotting cascade, have been shown to have

plausible

evolutionary pathways with intermediate stages that provide selective advantages.

In summary, opponents of intelligent design criticize irreducible complexity as an argument from personal incredulity because it relies on one's personal inability to

envision

or understand the evolutionary processes involved. They argue that scientific inquiry and evidence-based reasoning offer more reliable methods for understanding the origins and complexities of biological systems.

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What is the term opponents of intelligent design use to describe irreducible complexity, characterizing it as an "argument from personal incredulity"?

Answer:

formation of new and distinct species over the course of evolution

Answer:

Reproductive because it is an organism

Explanation:

Hydrogen atom attains a stable valence electron configuration by bonding with another atom.

Hydrogen atom is chemically stable as they share an electron with another hydrogen atom. When Combined with a hydrogen molecule consisting of two atoms with one oxygen atom they make a compound known as water.

They are capable of achieving a stable configuration by filling up the outer shell by donating or sharing one electron with another atom or a molecule such as water. Hydrogen atoms combined together to form a covalent bond because they share their electrons equally to form a hydrogen molecule.  

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Answer:

its b

Explanation:

my notes said so

The statement best describes the plants are vascular because it has true roots.

The vascular cylinder in the root contains xylem and phloem. Xylem moves water and dissolved minerals within a plant, while phloem moves food throughout a plant. The xylem generally moves water up from the roots, while the phloem moves food from the leaves to the roots.

Vascular plants possess true stems, roots and leaves. The main plant body is the sporophyte, which is diploid. Vascular plants include pteridophytes, gymnosperms and angiosperms.

The ferns, gymnosperms, and flowering plants are all vascular plants. Because they possess vascular tissues, these plants have true stems, leaves, and roots.

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Answer: hydrophobic lipid and hydrophilic phosphate

Explanation:

Answer: The Correct answer is 3) Negatively charged electrons can move freely through a metal

Explanation:

The electric current can pass easily through a metal because the electrons or negatively charged ions are relatively free to move in metals. So, whenever current pass-through metals, electrons carry electricity and pass it through the metal. The movement of these electrons are the reason for conduction of current in metals.

Answer:Negatively charged electrons can move freely through a metal

Answer:

Both samples will be different

Explanation:

Because having different amounts of atoms will make a big impact

Answer: I think with

Explanation:

a.) Organism X has 18.7% thymine.
b.) Organism Y has 20.1% cytosine.
c.) Organism Y will have the higher melting DNA.

a.) Organism X will have 18.7% thymine because adenine and thymine always pair together in DNA, and they will always have the same percentage.
b.) Organism Y will have 20.1% cytosine because adenine and thymine make up 59.8% of the DNA (29.9% + 29.9%), and the remaining 40.2% will be split equally between cytosine and guanine. So, 40.2% / 2 = 20.1% cytosine.
c.) Organism Y will have the higher melting DNA because it has a higher percentage of adenine and thymine, which form two hydrogen bonds, compared to cytosine and guanine, which form three hydrogen bonds. The more hydrogen bonds, the higher the melting temperature required to denature the DNA.

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Recombinant DNA technology is used for all of the following EXCEPT

culturing organisms.

Culture is the process of reproducing an organism for scientific study. We say microorganisms are cultured when they are grown. Culture is the process of reproducing an organism for scientific study.

What is recombinant DNA technology, and what are some examples?

The joining of DNA molecules from two different species is known as recombinant DNA technology. The recombined DNA molecule is inserted into a host organism, resulting in new genetic combinations useful to science, medicine, agriculture, and industry.

What types of DNA recombination exist?

In living organisms, at least four types of recombination have been identified: (1) general or homologous recombination, (2) illegitimate or nonhomologous recombination, (3) site-specific recombination, and (4) replicative recombination.

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Full Question :Recombinant DNA technology is used for all of the following EXCEPT ________.

insertion of genes from humans or plants into bacteria or viruses

human-insulin production by bacterial cells

amplification of DNA for microbe identification

hepatitis-B-vaccine production using yeast cells

culturing unknown organisms

culturing organisms

Answer:A

Explanation:

I find it in a page

From the graph given, the resistor that has the greatest resistance is resistor A.

The relationship between current and potential difference is given by Ohm's law.

V = IR

R = V/I

Where;

The greatest resistance of the resistor will occur at the least current.

The least current in the graph is obatined at point A.

Thus, from the graph given, the resistor that has the greatest resistance is resistor A.

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