One specific substance necessary for muscle activity that is delivered to muscles more effectively as a result of increased heart rate?

Relatively long-established nucleotide sequences cause unique cuts in DNA. Single guide RNAs (sgRNAs) can introduce new DNA sequences into the cells of living animals. CRISPR-Cas makes it possible to substitute a single base in DNA and RNA.

CRISPR-Cas systems have several advantages over restriction enzymes and engineered nucleases for editing DNA:
1. CRISPR-Cas systems are highly versatile, as they can target a wide range of DNA sequences with a simple change in the single guide RNA (sgRNA), whereas altering DNA-binding proteins for engineered nucleases can be more challenging.
2. CRISPR-Cas systems have higher specificity, as they can recognize relatively long nucleotide sequences, which leads to unique cuts in DNA and reduces off-target effects compared to restriction enzymes that typically recognize shorter sequences.
3. CRISPR-Cas systems can introduce new DNA sequences into the cells of living animals using sgRNAs, which can enable precise genetic modifications without the need to create entirely new organisms.
4. CRISPR-Cas systems can facilitate single base substitutions in both DNA and RNA, which allows for a wide range of editing capabilities, including correcting point mutations and introducing specific modifications at desired locations in the genome.

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Answer:

Magma come out of volcanoes that cools down and later on hardens up into rocks.  

Explanation:

Magma come out of volcanoes that cools down and later on hardens up into rocks.

The existence of magma is essential to comprehending the geology and morphology of the mantle because the majority of the mantle and crust are solid.

Different types of magma form as a result of variations in the mantle's and crust's structural features, pressure, and temperature. Decompression Melting The mainly solid mantle of the Earth moves higher during decompression melting.

Convection causes this hot material to rise to a place with lower pressure.

Therefore, Magma come out of volcanoes that cools down and later on hardens up into rocks.

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Answer:

1

Explanation:

if the water is evaporating that means it goes up becoming gas

The reason that explains why DNA replication occurs in a continuous-discontinuous fashion is that DNA polymerase only works to add nucleotides in one direction of the growing chain.

DNA replication refers to the process by which the genetic material is replicated before cell division.

DNA replication involved specific enzymes that work in a concerted manner to replicate DNA molecules.

DNA polymerase is a specific enzyme used during DNA replication to add nucleotides in direction 5' to 3', which is the direction of the growing chain.

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The end products of the light-dependent reactions of photosynthesis are (c) ATP and NADPH.

During the light-dependent reactions of photosynthesis, light energy is absorbed by pigments in photosystem II and I, and this energy is used to drive the transfer of electrons through the thylakoid membrane. The electron transport chain includes several electron carriers, including ferredoxin, and ultimately leads to the production of ATP through the activity of ATP synthase.

At the same time, NADP+ is reduced to NADPH by ferredoxin-NADP+ reductase, which uses electrons from the electron transport chain. These energy-rich molecules, ATP and NADPH, are then used in the light-independent reactions of photosynthesis, where they power the fixation of carbon dioxide and the production of carbohydrates.

Therefore, the correct option is (c) ATP and NADPH.

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Answer: Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

Explanation: hope this helps, if not then im very sorry.

Answer:

B/b alleles.

from a presentation

Answer: True,

Explanation:

To visualize Mendel's Law of Segregation, we can observe the inheritance patterns of a specific trait across multiple generations. By tracking the phenotypes of offspring from parents with known genotypes, we can determine if the trait segregates in a predictable manner.

This can be done by conducting controlled breeding experiments and analyzing the ratios of observed phenotypes. In summary, by observing inheritance patterns and analyzing phenotypic ratios, we can visualize and understand Mendel's Law of Segregation. These laws were created and enforced by the government, which discriminated against certain groups of people, particularly African Americans. This led to institutionalized segregation in many aspects of life, including education, housing, and public accommodations. So, segregation can be a result of government discrimination and is often enforced by laws that discriminate against certain groups of people.

Segregation is the separation of people based on their race, ethnicity, or other characteristics. When segregation is required by law and results from government discrimination, it is known as "legal segregation" or "de jure segregation." In this case, the government enacts and enforces laws that mandate the separation of different groups, leading to unequal treatment and limited opportunities for certain groups. Legal segregation has been a prominent issue in many countries throughout history, including the United States during the era of Jim Crow laws.

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Answer: False

Explanation:

Methylation of histones causes them to be more condensed decreasing expression of the DNA.

Acetylation of histones makes the DNA less condensed.

Regions that are significantly cooler or warmer than the freezing point experience less frost wedging because frost wedging requires a cycle of freezing and thawing, which occurs in regions where the temperature fluctuates around the freezing point.

Frost wedging is a mechanical weathering process that occurs when water seeps into cracks and pores in rocks and then freezes, causing the water to expand and the rock to fracture. This process is most effective in regions where the temperature fluctuates around the freezing point, such as in cold climates or at high elevations.

In regions that are significantly cooler than the freezing point, water may remain frozen for long periods of time, preventing the cycle of freezing and thawing necessary for frost wedging to occur. In contrast, in regions that are significantly warmer than the freezing point, water is less likely to freeze and the cycle of freezing and thawing may not occur frequently enough to cause significant frost wedging.

Therefore, regions that are significantly cooler or warmer than the freezing point may experience less frost wedging compared to regions with temperatures that fluctuate around the freezing point.

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Answer:

part of the upper mantle

Explanation:

People who experience persistent disturbances in their everyday diet along with possible distress or concern about their body weight are most likely to be diagnosed with Anorexia Nervosa disorder.

Anorexia Nervosa is a disease in which the patient is always worried about his/ her weight. They stop eating or eat very less to reduce their weight.

This is an eating disorder that is treated with medicines and sessions. This disease is harmful because it leads to malnutrition and many diseases.

Thus, the disorder is Anorexia Nervosa.

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Guinea pig with white fur is concluded to have recessive alleles.

The population of guinea pigs =400

The population of Black individuals =384

The population of white indivisuals=400-384=16

Frequency of recessive allele (q) =√(16/400) = √0.04 = 0.2

p = 1-0.2= 0.8

True breeding of dominant trait = p^(2) = 0.8^(2) *100= 64%

True breeding of recessive trait=q^(2)=0.2^(2)*100=4%

Percentage of animals expected to be true breeding =64+4=68

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Answer:

TAGCCAGTTCGATCC

Explanation:

In DNA, there are 4 different nucleotide bases. Adenine (A), Thymine (T), Cytosine (C) and Guanine (G).

A (adenine) always pairs with T(thymine) and C(cytosine) always pairs with G (guanine).

If we have the strand:

ATCGGTCAAGCTAGG  

We have to pair A with T, and C with G. Therefore, the complementary strand of DNA will be:

TAGCCAGTTCGATCC

Answer:

Lack of funds

Entrance examination complications

Lack of ability to adjust

Explanation:

Three difficulties school-leavers may face when trying to apply for higher education​ are 1) unknown about streams 2) unknown about their ability 3) pressure under family and society.

Students, as they get pass out from the school, they face many problems to apply for higher education. The first problem come to our door which stream should we choose cause it decides our entire currier. What should we peruse, science, commerce or arts ?. Students don't know about what we will have to study in which streams. They just know profession and their corresponding stream, like if u want to become a doctor or engineer just take science, if u want CA, take commerce and take arts if u want to become a politician or economist. But they really don't know what we have to study in these streams. If they get to know what we have to study in which streams, they can take decision about choosing streams according to their area of interest.

Second thing student face problems while applying is they don't know about their ability and interest, Students take science or arts in spite of being excellent in arithmetic calculation. why because they want to become a doctor and they leave the course telling the reason of scissoring the body. It is like fish is trying to fly. Everyone has different ability and interest which we take from nature. We everyone have different gifts given by the God. If we know what we are excellent in, that will be helpful to choose our currier.

The third which is very very important problem facing by the students is they get under pressure of parents, they have to take engineering in spite of being excellent at another thing. After taking engineering they get more pressurized with the load of study. Non-interested engineering students don't enjoy their study. Many students get into depression and all. Students get pressurized by their parents to take admission in a particular stream because neighbor's son has taken admission for. Parents compare with salary associated with a profession, newborns. They don't get know about child's ability.

Hence these are important aspects which face students while applying for higher education.

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We can see here that identifying the stage in the cycle the hormone levels are at their highest and most active, we have:
Box 1: Luteinizing hormone levels high.

Box 2: Progesterone levels high

Box 3: Estrogen levels consistently rise.

A hormone is a chemical substance produced by the endocrine glands in the body.

Luteinizing hormone (LH) levels rise sharply in the middle of the menstrual cycle, which is called the ovulatory phase. This surge of LH triggers ovulation, the release of the mature oocyte from the ovary.

Progesterone levels rise after ovulation and peak in the luteal phase. Progesterone prepares the uterus for pregnancy by thickening the lining of the uterus. If pregnancy does not occur, progesterone levels drop and the menstrual cycle begins again.

Estrogen levels rise throughout the follicular phase, which is the first half of the menstrual cycle. Estrogen levels peak just before ovulation.

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Answer: A

Explanation:

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\( \sf \red{What \: trophic \: level \: do \: herbivores \: occupy \: in \: a \: food \: chain?}\)

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\(\green\star\)Primary consumer

\(\pink\star\)Explanation:

Let us take an example of chain. Plants are producer, they produce grass, after then it comes primary consumer like cow,goat etc. Then it comes Secondary comsumer like us, we human take milk or flesh from it. And at last it comes to decomposer which are micro organism that absorb the wastes in the soil and make the soil fertile.

Thus, herbivores comes under Primary consumer.

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Answer:

c

Explanation:

Proteins macromolecule might her daughter be deficient in.

Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.

Moreover, every cell in the human body contains protein. The basic structure of protein is a chain of amino acids. You need protein in your diet to help your body repair cells and make new ones. Protein is also important for growth and development in children, teens, and pregnant women.

Serious protein deficiency can cause swelling, fatty liver, skin degeneration, increase the severity of infections and stunt growth in children. While true deficiency is rare in developed countries, low intake may cause muscle wasting and increase the risk of bone fractures.

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Answer:

The chloroplast has an inner and outer membrane with an empty intermediate space in between. Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast. These thylakoids contain the chlorophyll that is necessary for the plant to go through photosynthesis.

Explanation:

Plant diseases are caused by pathogenic fungi. These fungi cause diseases to the plants which may lead to crop loss. Some of the plant diseases caused by pathogenic fungi are leaf spots, powdery mildew, and rust. Certain fungi form mycorrhizae with plant roots in a beneficial association. These mycorrhizae fungi are important for the growth of the plant as they help in the absorption of water and nutrients.

The plant, in turn, provides the fungus with carbohydrates. Fungi called endophytes live compatibly within the leaves of plants. They can live within the plant without causing any harm or symptoms of diseases. These endophytes help to protect the plant from herbivores or pathogens.A lichen is a cooperative association between fungi and certain types of algae.

The algae produce food using photosynthesis, and the fungi provide a structure and protect the algae from the environment.Commensal fungi are fungi that live on other organisms without causing harm or benefiting them. In conclusion, pathogenic, mycorrhizae, endophytes, lichen, and commensal are the terms used to describe fungal relationships with other organisms.

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Answer:

A . The entire sequence of amino acids is changed.

Explanation:

The entire sequence of amino acids is changed when the mutation occurs in the protein because amino acid is the building block from which protein is made. Mutation is the sudden change that is occur in the genetic makeup i.e. DNA when the cell is exposed to radioactive radiation of chemicals. So due to this change, the sequence of amino acids changed and they work differently.

Answer:

Growths exist as single cells or as fanning systems of multicellular fibers. How does the structure of the fibers identify with their capacity? ... Their long, fanning structure assists organisms with finding an area to create posterity

Explanation:

The advantage of having many nuclei in a skeletal muscle fiber is the ability to produce large amounts of muscle proteins. This is because each nucleus can support the production of a certain amount of protein, and the more nuclei a muscle fiber has, the more protein it can produce.

This allows for faster muscle growth and repair, as well as increased strength and endurance.

The nuclei in skeletal muscle fibers are also responsible for controlling gene expression, which is essential for proper muscle function. They regulate the transcription and translation of DNA into proteins, allowing for the precise control of muscle contraction and relaxation.

Additionally, having multiple nuclei allows for greater communication and coordination within the muscle fiber. This allows for more efficient and effective contraction, leading to increased force production.

Overall, the presence of multiple nuclei in skeletal muscle fibers is a key advantage for muscle growth, repair, and function. It allows for greater protein synthesis, gene expression control, and communication within the muscle fiber, leading to increased strength and endurance.

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