A single-stranded polymer whose monomers contain the sugar ribose and the nitrogenous base uracil:_______.

The allele for sickle-cell anemia is believed to have originated in areas where there are large populations of mosquitoes bearing falciparum malaria.

Sickle-cell anemia is an inherited blood disorder that causes the body to produce abnormal hemoglobin, the protein in red blood cells that carries oxygen.

It is caused by a mutation in the HBB gene that codes for the beta-globin subunit of hemoglobin, resulting in the formation of abnormal hemoglobin molecules that can cause red blood cells to become misshapen, rigid, and break down easily.

Malaria is a parasitic disease that is transmitted by mosquitoes and is caused by the Plasmodium parasite. It is a major public health concern in many parts of the world, particularly in tropical and subtropical regions.

Mosquitoes that carry the Plasmodium parasite are often found in areas where there are large populations of people who are genetically predisposed to sickle-cell anemia, such as parts of Africa, India, and the Middle East.

The reason why sickle-cell anemia is more common in these regions is that carrying the sickle-cell allele can provide some protection against malaria.

This is because the misshapen red blood cells that result from the sickle-cell mutation are less hospitable to the Plasmodium parasite, which cannot survive as well inside them as it can inside normal red blood cells.

Therefore, individuals who carry the sickle-cell allele are less likely to contract malaria, and this has led to the evolution and persistence of the allele in areas where malaria is endemic.

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The student can alter the track of the marble by making it a level, level track with no slant or decrease. By doing so, the marble will not involvement any alter in height, and so  its potential vitality will stay steady.

Potential energy is subordinate on the stature of an question over the ground or a reference point. When the marble is on an slanted track, it picks up potential vitality because it moves higher and loses potential vitality because it moves lower due to changes in stature.

In the event that the track is flat, the marble will not involvement any alter in tallness, and thus its potential vitality will not alter.

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The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.

Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.

Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.

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Answer:

Pollution

Explanation:

If the human population surpasses Earth's global capacity, there will be degradation of land, air, and water with increased pollution.

The main function of protein is to carry oxygen, speeds up chemical reactions and fights infections. Therefore, the correct statement is option B.

Proteins are a class of biomolecules that play an important role in the structure, function, and regulation of cells and tissues in living organisms. Protein constitutes the long chains of amino acids forming complex three-dimensional structures.

Proteins perform various functions in the body, such as carrying out chemical reactions, transportation of molecules, carry oxygen, and defending the body against infections and diseases.

Hemoglobin is also a protein that carry oxygen from the lungs to the rest of the body. Enzymes are also proteins that lowers the activation energy required for the reaction to occur and speed up the chemical reactions whereas antibodies are another class of proteins that bind to specific antigens for destruction by the immune system, thereby, protecting the body from various diseases.

Therefore, proteins help in carrying oxygen, speeds up chemical reactions and fights infections.

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Answer:

option D

Explanation:

Answer:

bacteria do not interact with organisms, so they do not maintain or disrupt their health.

Is d

Explanation:

Answer:

A: yes

Explanation:

B: Sample three is a mixture of the suspect and victims. Putting it simply, if you line up the victims DNA and remove it from sample 2 you are left with a sample of DNA that is identical to the suspects.

The Earth's elliptical orbit does not cause the seasons.

It is important to note that the causes of the seasons are not related to astrology, but rather to the tilt of the Earth's axis and its revolution around the sun. The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbit around the sun.

This means that as the Earth orbits the sun, different parts of the planet receive different amounts of sunlight depending on their position relative to the sun.

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The fraction of the protein bounded to progesterone is approximately 36.8%.

To calculate the fraction of the protein bound to progesterone, you can use the law of mass action with the given values for the total concentration of progesterone (4.2 nM) and the value of Kp (7.2 nM). The equation for the fraction of bound protein (f) is:

f = [P]/([P] + Kp)

where [P] is the concentration of progesterone.

Given the concentration of progesterone (4.2 nM) and Kp (7.2 nM), we can now calculate the fraction of bound protein:

f = 4.2 / (4.2 + 7.2)
f ≈ 0.368

So, approximately 36.8% of the protein is bound to progesterone.

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The key discovery leading to the structure of DNA that was done by Chargaff includes:

Chargaff's experiments showed that the DNA of different organisms had different ratios of the four bases (A, T, G, C), disproving the tetranucleotide hypothesis.

He also discovered that the amount of A always equals the amount of T, and the amount of G always equals the amount of C, which became known as Chargaff's rules. These findings were crucial in the development of the double helix model of DNA.

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Answer:

Proof of unfamiliar facts.

Explanation:

e.g Data analysis of a defendant shows their fingerprints on something from a completely different crime, but we do not know what actually happened that day, because the evidence is very unrelated and indirectly proving that the defendant would be guilt of another crime from likely a long time ago.

Hope this helps. Let me know if you have other concerns or if something is wrong, and I will do my best to fix it.

Crosses between tall plants (TT) and short peas (tt) resulted in offspring that were all tall plants, as size was the dominant trait. Therefore, size is the dominant feature.

The presence of two identical alleles at a particular locus. A homozygous genotype can have two normal alleles or two alleles with the same variant.

You can have brown eyes whether you are homozygous (two brown eye alleles) or heterozygous (one brown allele and one blue allele). It is dominant trait. This differs from the blue-eyed allele, which is recessive. Blue eyes require two identical blue eye alleles and brown eye alleles are dominant trait.

Crossing two plants of the same species to transmit only one trait is called monohybrid crossing.

For example, a cross between large and short peas is a monohybrid cross when only the size of the parents is considered.

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Answer:

A tropism is the innate ability of an organism to turn or move in response to a stimulus. Organisms with a tropism will naturally turn toward a push. A trigger can be any signal from the environment, and individual tropisms are often named after the trigger that causes the movement.

Explanation:

Answer: uh Well, Your foot should be at the end of the starting line you prepared earlier. Once you're ready, you can throw your plane. Measure the distance the paper plane traveled (in centimeters or meters) from the starting point with the tape measure. Your lab notebook should include this data in a table. "Plane 1" will take off from this point.

Explanation:

Read above-

Answer: i think true

Explanation: The corn syrup has less water than the egg it's hypertonic so it sucks water out of the egg through the membrane. The water is hypotonic relative to the egg meaning it has more water, as you might guess so the egg pulls water inside

The surface tension that is a result of water's cohesive properties makes it possible for some tiny insects to walk on water. Cohesion is the property of water molecules sticking together due to hydrogen bonding. This creates a thin film of water on the surface, which is known as surface tension. This tension can support the weight of some tiny insects and allow them to walk on the water, Option A.

Surface tension is a property of liquids that allows them to resist an external force. It is caused by the cohesive forces between the liquid's molecules, which create a sort of "skin" on the surface of the liquid. This skin is strong enough to support the weight of small insects, allowing them to walk on water.

This is why some tiny insects are able to walk on water. They are small and light enough to be supported by the surface tension of the water, and their legs are able to distribute their weight evenly across the surface of the water. This allows them to walk on water without breaking the surface tension and sinking.

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The kinetic energy of the particle is approximately 26.18 gigajoules (GJ).

How to find the kinetic energy of the particle?

To convert the length of the particle from millimetres (mm) to meters (m), we divide by 1000:

Length of particle = 1000 mm / 1000 = 1 m

The velocity of the particle is given as 10,000 m/s.

We can use the equation for kinetic energy (KE) to calculate the energy of the particle:

\(KE = 1/2 * m * v^2\)

where m is the particle's mass and v is its velocity.

To calculate the mass of the particle, we need to know its density. Let's assume it has a density of \(1 g/cm^3.\)

The volume of the particle is:

\(V = (4/3) * pi * r^3\)

where r is the radius of the particle. We know the length of the particle is 1 m, so the radius is:

r = 1/2 = 0.5 m

Substituting the value of the radius into the equation for the volume:

\(V = (4/3) * pi * (0.5)^3 = 0.5236 m^3\)

The mass of the particle is:

m = density * volume\(= 1 g/cm^3 * 1000 kg/m^3 * 0.5236 m^3 = 523.6 kg\)

Substituting the values of mass and velocity into the equation for kinetic energy:

\(KE = 1/2 * m * v^2 = 1/2 * 523.6 kg * (10,000 m/s)^2 = 26.18 GJ\)

Therefore, the kinetic energy of the particle is approximately 26.18 gigajoules (GJ).

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The control group would be the group that received the placebo. Option B.

Placebos are substances that are given to patients or applied to a condition solely for their psychological rather than their physiological effects. In other words, placebos are not drugs per se, They could be something as simple as water or waffles but are usually given to patients without telling them the active ingredients.

In the case of the doctor testing the effectiveness of a new antibiotic, the group given a placebo represents the control group. The control group in any experiment are groups that provide the reference line on which the comparison of the subjects in treatment groups is made.

The two groups that were given antibiotics A and B are treatment groups.

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vaccines cause the production of specific molecules that will react with and destroy

Answer:

The statement that accurately describes the aspects of plate tectonics that involve sub-duction and seafloor spreading is : Crust is created at the coastlines of continents.

Explanation:

i

Answer:

A

Explanation:

The mass of the wax after the melting would still be exactly 50 g

A cornerstone of physics and chemistry is the law of conservation of mass, commonly referred to as the principle of mass conservation. It asserts that mass cannot be created or removed in a closed system.

In other words, the total mass of a closed system remains constant over time, regardless of any physical or chemical changes that may occur within the system.

Since the mass of the wax would not change, it would be right to say that by this law, the melted wax would stull weigh 50g

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Answer:

Revelation 12:11

Answer:

A) solids

Explanation:

Most minerals are solids if I am correctamundo(that's a real word, crazy right?)

Have a great day everybody stay safe and be kind. :))

Answer:

Different species within a phylum all have the same basic characters, anatomical and functional integrity, common ancestry.

Explanation:

The animals having same phylum but different species have similar basic structural pattern. That means the anatomical features are constructed on the same ground plan. This individuals have similar functional integration. All animals of a phylum work as a functional machines with similar functional integration.

Another important feature is they have common ancestry. Evolutionary study have confirmed all members of  a similar phylum have been derived directly or indirectly from a common primitive ancestry.

Penguins live primarily in the Southern Hemisphere. The tiny blue penguins can be found in Australia and New Zealand, while the majestic emperor penguins can be found in Antarctica and the king penguins can be found in many sub- Antarctic islands.

Answer: B

ITS WATER I SWEAR

H20 has multiple elements in it so its a compound the others are just single elements

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The gradual changes that occur in all persons as they age is called natural aging.

Aging is the natural, gradual process of physical and biological changes that occur over time in living organisms, leading to a decline in bodily function and an increased risk of disease and death.

Natural aging refers to the gradual and inevitable process of bodily changes that occur as a person grows older, including changes in physical appearance, bodily functions, and susceptibility to age-related diseases. It is a normal part of the human life cycle.

According to the guven information:

The gradual changes that occur in all persons as they age is called natural aging. Natural aging is a normal process that affects everyone and is caused by various factors such as genetics, lifestyle, and environmental factors. These changes can affect the physical, cognitive, and emotional aspects of an individual's life. Some of the common changes associated with natural aging include wrinkles, gray hair, decreased vision and hearing, decreased bone density, and slower metabolism. However, it is important to note that everyone ages differently, and some individuals may experience these changes at a faster or slower rate than others.

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