in trinucleotide repeat expansion disorders, when the expansion occurs in the coding sequence of the gene, the repeat sequence is usually ______.

Answer:

C: An ocean sedimentary rock formed from the dhells of dead organisms

Answer:

C

Explanation:

Limestone, otherwise known as Calcium Carbonate, is an ocean sedimentary rock formed from the shells of dead organisms.

When these animals die, their shell and skeletal debris accumulate as a sediment that might be lithified into limestone. Limestones formed from this type of sediment are biological sedimentary rocks.

Answer:

Mouth: The digestive process starts in your mouth when you chew. Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach. Saliva also has an enzyme that begins to break down starches in your food.

Pharynx: It receives food and air from the mouth, and air from the nasal cavities.

Esophagus: the esophagus receives food from your mouth when you swallow.

Stomach: It takes in food from the esophagus, mixes it, breaks it down, and then passes it on to the small intestine in small portions.

Small Intestine: The small intestine carries out most of the digestive process, absorbing almost all of the nutrients you get from foods into your bloodstream.

Large Intestine: The purpose of the large intestine is to absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over. By the time food mixed with digestive juices reaches your large intestine, most digestion and absorption has already taken place.

Rectum:  The rectum stores the stool until you feel the need to have a bowel movement. Muscles of your rectum then push the stool through your anus and out of your body.

Anus: The anus is the opening at the far end of the digestive tract through which stool leaves the body.

Liver: Your liver makes a digestive juice called bile that helps digest fats and some vitamins. Bile ducts carry bile from your liver to your gallbladder for storage, or to the small intestine for use.

Pancreas: your pancreas makes pancreatic juices called enzymes.

Gallbladder: the bile passes to the gallbladder which concentrates and stores it for later use

Blood: blood transports nutrients and hormones

Explanation:

Cells that are in prophase of meiosis are drastically different from those at the completion of meiosis. In prophase I, homologous chromosomes pair up and synapse, while in the final stage of meiosis, the cells have split into four nuclei.

During prophase I, the centrosomes migrate to opposite poles and duplicate, while at the end of meiosis, the cells contain half the number of chromosomes of the original dividing cell. Additionally, during prophase I, the chromosomes condense into densely packed X-shaped structures and crossing over occurs to mix genetic material, while at the completion of meiosis the cells contain four haploid nuclei.

Furthermore, genetic recombination is seen during prophase I, while at the end of meiosis, the haploid chromosome sets are independent from each other. In conclusion, cells at the completion of meiosis differ from those in prophase I in that they have half the number of chromosomes; genetic recombination occurs; and four haploid nuclei separate from each other.

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Answer:

(B)  A suspect's mtDNA sample is matched to an unknown sample of mtDNA that was found at a crime scene

Explanation:

I got it right lol and have a good day <3

Option B A suspect’s mtDNA sample is matched to an unknown sample of mtDNA that was found at a crime scene is correct.

Mitochondrial DNA (mtDNA) typing is used in forensic science to analyze DNA evidence in cases where the DNA material is degraded or present in small amounts, such as in hair shafts, bones, and teeth.

mtDNA typing is also useful in cases where a person's nuclear DNA (which is unique to each individual) is not available or is contaminated with DNA from multiple sources.

mtDNA is inherited maternally and is present in multiple copies in each cell, making it more abundant and resistant to degradation than nuclear DNA.

Forensic scientists can compare the mtDNA profile of a suspect with mtDNA evidence found at a crime scene to determine whether the suspect's DNA could have contributed to the evidence.

Since mtDNA is not unique to each individual and is shared among maternal relatives, mtDNA evidence alone cannot definitively identify a suspect, but it can help exclude individuals who do not share a common mtDNA profile with the evidence.

Hence option B is correct.

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Answer:

A. They share a common ancestor, but they’re different species.

Explanation:

Non-sense point mutations are the type of mutations caused by a change in the nucleotide sequence of DNA that results in the insertion of a stop codon.

Nonsense mutations refer to changes in a DNA sequence that result in one of the three termination (or "stop") codons replacing the regular codon for an amino acid. Because messenger RNA (mRNA) translation stops when a termination codon is reached, a mutation that changes a coding exon into a termination codon results in the mRNA's coding sequence being translated only halfway.

Premature termination mutations have two different effects. First, translation is impossible because the mRNA bearing a premature mutation is frequently selected for quick breakdown (via a biological process known as nonsense-mediated mRNA decay). The truncated protein is typically so unstable that it is quickly degraded within the cell, even if the mRNA is stable enough to be translated.

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Answer:

C.) Gross Primary Productivity

_________________________________

Explanation:

Gross primary productivity, aka GPP, is the rate in which solar energy is captured within sugar molecules during the process of photosynthesis. It is in other words the energy captured per unit area per unit of time. Plants, in this case, use some of this energy to support their metabolism/cellular respiration, and other portions of this energy for their growth and building of their tissues.

__________________________________

Hope this helps! If so, lmk! Thanks and good luck!

Further information regarding this topic can be found at the following link:

https://www.khanacademy.org/science/biology/ecology/intro-to-ecosystems/a/energy-flow-primary-productivity

The term you are referring to is "natural resources." Natural resources encompass all the elements and materials present in the environment that are considered valuable and useful for human activities. They include everything that is available in its natural state and can be used as productive inputs for various purposes.

Natural resources can be classified into different categories based on their origin and characteristics. Here are some examples:

1. Land and Soil: Land provides a physical space for human activities and supports various ecosystems. It includes arable land for agriculture, forests, grasslands, and other terrestrial environments. Soil, a crucial component of land, is essential for plant growth and agriculture.

2. Water Resources: Water is a vital natural resource, necessary for drinking, irrigation, industrial processes, and the functioning of ecosystems. It includes freshwater sources such as rivers, lakes, and groundwater.

3. Mineral and Energy Resources: This category includes minerals, ores, fossil fuels, and other energy sources. Examples include coal, oil, natural gas, uranium, iron ore, copper, gold, and various other minerals that are extracted and used in industries.

4. Forests and Biodiversity: Forests are rich sources of timber, wood products, and non-timber forest products. They also provide habitat for numerous species and play a crucial role in carbon sequestration and climate regulation.

5. Air and Atmosphere: While not typically thought of as a resource, the atmosphere provides essential gases, such as oxygen and nitrogen, necessary for life. It is also affected by human activities and is a vital component in climate regulation.

Natural resources are essential for sustaining human life and supporting economic activities. However, their availability and distribution are not uniform globally, leading to challenges in resource management, conservation, and equitable access. Responsible and sustainable use of natural resources is crucial to ensure their long-term availability and to mitigate negative environmental impacts.

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A test-cross should result in 50% of all children having the bb genotype and a white phenotype if the male is Bb as previously described. After a testcross to a heterozygous person, there should always be an about 1:1 ratio between the dominant and recessive characteristics. Therefore, the genotypic to phenotypic ratio in this instance is 50:50.

The parts of an organism's genome that make up its genotype. The set of alleles or genetic variations that a person possesses inside a certain gene or genetic area is also referred to as their genotype. The number of copies of each chromosome found in that species, or ploidy, determines how many alleles a person can have for a given gene. Each person has two alleles for each gene since humans are diploid (have two full sets of chromosomes). Homozygous is the term used to describe a genotype where both alleles are the same. The genotype is referred to as heterozygous when there are two distinct alleles.

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Answer: The English settlers brought it over from England when they brought supplies to start a new life over

Explanation:

Answer:

The cell was unable to maintain a stable internal environment.

Your welcome ;D

Explanation:

When a mosquito bites you and consumes some of your blood, it is acting as an ectoparasite. So, option C is accurate.

An ectoparasite is an organism that lives on the external surface of its host and derives its nourishment or resources from the host's body. These parasites can be found on various animals, including humans, and they typically feed on blood, skin cells, or other bodily fluids.

In the case of a mosquito, it feeds on the blood of its host by piercing the skin with its mouthparts and sucking blood. The mosquito does not live inside the host's body but rather feeds externally. Therefore, the correct answer is option c, ectoparasite.

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The population of stag horn's increase during the black band infection because they were not affected and there was less competition.

The stag horn is a type of coral found in coral reefs.

The stag horn is branching cylindrical coral.

The black band disease of corals is a microbial disease which results in tissue degradation of corals

During the black band disease of corals, the stage horns were not affected.

Therefore, the population of stag horn's increase during the black band infection because they were not affected and there was less competition.

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Answer: Making Observations

Explanation:

She’s interested about learning about space, so when she looks through her telescope she’s observing. She wants to see how The bodies look, because she’s interested.

Answer:

D. Making observations

Explanation:

because she is looking/observing the sky

Answer:

Gaps between the Schwann cells are called nodes of Ranvier. These nodes permit an impulse to travel faster because it doesn't need to depolarize each area of a membrane, just the nodes.

Explanation:

The combination of alleles for a gene in an individual constitutes a genotype, while the phenotype is the expression of the alleles.

A genotype represents the specific set of genetic information carried by an individual, and it is inherited from their parents. It consists of two alleles, one from each parent, that combine to determine the individual's characteristics for a particular trait. On the other hand, a phenotype is the observable expression of these genetic traits in an individual. It is determined by the interaction between the genotype and environmental factors.

In other words, the phenotype represents the physical and functional manifestation of the genetic information, such as the individual's appearance, behavior, and physiological processes. In summary, a genotype is the combination of alleles for a specific gene in an individual, while the phenotype is the expression of these alleles. Understanding the relationship between genotype and phenotype is essential for studying genetics, inheritance, and the influence of environmental factors on an individual's characteristics.

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Answer:

fish, replities, insects and amphibians

Explanation:

Mention the four characteristics of warm-blooded animals.

Answer:

There are different aggravates that can be gotten from the living species. These mixes are significantly utilized as medications. Different analysts are performing work to decide the mixes found in the living species that might be helpful to people. They examine a few of the large number of mixes and select just those that show the alluring highlights.

There are different substance mixes found in living creatures, which can help in bettering human wellbeing. The common mixes are utilized in unmistakable societies for a large number of years. On specific events they are used as medications, the great representation is the utilization of penicillin, that is, a compound acquired from a parasite, and is broadly utilized as the most readily accessible anti-infection. Like this there are different meds, which are acquired from plants.

Explanation:

The conclusion of the hypothesis test regarding the mean body temperature of a healthy adult is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F.

a) Null Hypothesis (H0): The mean body temperature of a healthy adult is 98.6∘F.

  Alternative Hypothesis (H1): The mean body temperature of a healthy adult is not 98.6∘F.

b) The hypothesis test should be two-tailed.

c) The appropriate significance level is 0.05.

d) The test statistic is calculated using the formula: (sample mean - hypothesized mean) / (sample standard deviation / sqrt(sample size)). The result is -5.86.

e) The p-value is calculated by finding the probability of obtaining a test statistic as extreme or more extreme than the observed value under the null hypothesis. The p-value is 0.0000.

f) We reject the null hypothesis, since the p-value is less than the significance level.

g) The phrase "There is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6F" best summarises the finding.

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Answer:

D.Angiosperms

Explanation:

\(H^+\) ions are moving out of the cell by active transport. Option C.

Active transport is a form of cell transportation that requires the expedition of energy, usually in the form of ATP.

An example of active transport is ion transport across the cell membrane as depicted in the image. When materials are moved from the side of higher concentration to the side of lower concentration, the materials are moved along their concentration gradients.

When materials move from the side of a lower concentration to the side of a higher concentration, the materials are said to be moved against their concentration gradients.

From the image, one can see that  \(H^+\) ions are moving from the cytoplasm across the cell membrane to the external environment. It can also be seen that this movement of ions requires ATP. Thus, it can be concluded that \(H^+\) ions are moving out of the cell by active transport.

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Since a pump carrier protein is carrying H+ from the lower-concentration side to the higher-concentration side using ATP, we can assume the true statement about the diagram is C) H+ ions are moving out of the cell by active transport.

Active transport is a cellular transmembrane type of transport together with passive transport and simple diffusion.

Active transport acts against the electrochemical gradient, so it does need energy to transport substances. It carries molecules from a low-concentration side of the membrane to a high-concentration side.

The energy used comes from ATP (Na-K bomb) or the membrane's electric potential.

The transmembrane proteins involved in active transport are Carrier proteins.

In the exposed image you can see

This is active transport. Option C.

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Answer:

substrates

Explanation:

Enzymes catalyze the reactions of substrate molecules. If a molecule merely binds (and does not react), this molecule is called a "Ligand".

Of example, Glucose is a substrate for the hexokinase in the first step of glycolysis.

Gamma Amino Butyric Acid (GABA) is a neurotransmitter and ligand for GABA receptor proteins (ionotropic and G-protein coupled receptors or metabotropic receptors). GABA is not chemically modified - only binds.

The molecule that an enzyme binds to is known as its substrate.

Enzymes are proteins that catalyze chemical reactions in the body. They do this by bringing together the reactants of a chemical reaction (the substrates) in such a way that the reaction can occur more efficiently.

Each enzyme is specific to a particular type of substrate, and it will bind to that substrate in a specific way. The enzyme will form a temporary complex with the substrate, and the chemical reaction will take place within this complex. Once the reaction is complete, the enzyme is released from the complex and is able to bind to more substrate molecules and catalyze more reactions.

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The three species of bees that feed on the shin dagger agave in the American Southwest can be said to exhibit competitive coexistence because they a. share the same food resource by foraging at different times and places

Competitive coexistence occurs when multiple species can coexist in the same environment despite competing for the same resources. By foraging at different times and places, the bee species are able to reduce direct competition for the shin dagger agave's nectar, allowing all three species to thrive together. This strategy enables each bee species to have access to the food resource without completely depleting it, thus promoting a sustainable coexistence.

Options B, C, D, and E do not accurately describe competitive coexistence because they do not emphasize the importance of reducing competition among the species. By foraging at different times and places, these bee species can maintain a balance in the ecosystem while still obtaining the necessary resources for their survival. So therefore the correct answer is a. share the same food resource by foraging at different times and places.

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Answer: Illegal immigration can be defined as the migration of the people into another country by violating the immigration laws of the country being visited.

Explanation:

The three ways in which the country can address or improve the problem of illegal immigration are as follows:

1. The country can impose strict immigration laws on people who are native of other countries.

2. The country can prohibit schooling and education of children belonging to unauthorized citizenship.

3. The country can also prohibit the food availability and driving licences of the people belonging to the other country with unauthorized citizenship.

Answer:

No Idea

Explanation: I don't have an answer but I just want to say, Thanks Surnia. :) This really helped me. I was about to give up.

Answer:

receptores olfativos especializados localizados en el epitelio olfatorio de la mucosa nasal

Explanation:

Las neuronas receptoras del olor se denominan receptores olfatorios. Los receptores olfatorios son células especializadas capaces de percibir miles de sustancias químicas diferentes y decodificar la información en miles de olores distintos. Estos receptores se localizan en la mucosa nasal de las fosas nasales. En el caso del olor a rosa, como así también cualquier otro olor, las sustancias químicas responsables del olor se dirigen al epitelio olfatorio de la mucosa nasal, donde se unen a receptores específicos localizados sobre filamentos sensoriales (cilios) en las membranas celulares de las neuronas especializadas. La unión desencadena una respuesta en la células neuronales, es decir, una descarga eléctrica que se propaga desde las fosas nasales hasta el cerebro, el cual decodifica la información (el olor) en una región conocida como bulbo olfatorio.

The recommended course of treatment for recurrent Clostridium difficile infection (rCDI) is fecal microbiota transplantation (FMT).

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As a senior high student, the help that can be extended to one's community so that the people will be informed of the elements that are exposed to hazards is: Creating Awareness about the elements through the distribution of flyers.

What are hazards?

Hazards are chemical substances that have the potential to cause harm. A community is usually large and to reach such a large audience, flyers or public address systems can be used.

A student can design simple flyers to be shared to all families in the community informing them of the elements that are exposed to hazards.

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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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