What is a key difference in gene expression between eukaryotic and prokaryotic cells?

Answer:

climate

Explanation:

DNA methylation usually inactivates genes, while histone modification can activate or inactivate genes. Genomic imprinting is the phenomenon in which a gene's expression is determined by its parental origin. Embryonic stem cells are usually used instead of induced pluripotent stem cells in cloning due to the retention of epigenetic tags that make cloning less successful.

DNA methylation plays a role in gene inactivation by adding methyl groups to DNA, while histone modification can activate or inactivate genes by modifying the histone proteins associated with DNA. Genomic imprinting refers to the phenomenon where gene expression is influenced by the parent of origin. In cloning, embryonic stem cells are preferred over induced pluripotent stem cells due to the retention of epigenetic tags that affect gene expression and may impact the success of cloning.

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Answer:

Explanation:

OKKK

Answer:

b. they can express the same genes

Important factors to be considered when storing are temperature, light, moisture, oxygen, container, warning, infestation and self date.

Important factors that affect food storage and to be considered when storing are-

Temperature, light, moisture, oxygen, container, warning, infestation and self date.

Proper food storage helps in many ways. It preserve the quality and nutritional value of the foods we purchase, and also helps make the most of our food dollar by preventing spoilage. Also proper food storage can help prevent foodborne illnesses like- food poisoning. Which are caused by harmful bacteria or other pathogens.

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Answer:

Double Helical Spiral structure

Explanation:

DNA is a helical spiral structure in which two long strands of nucleotide form a double helix structure.

It looks like a structure of ladder in which the phosphate and sugar molecules from the side of the ladder and the base pairs form the rungs.

The single most important factor in pulling water towards the top of a tall tree is the evaporation of water through the stomata.

Xylem vessels are vessels that transport water from the roots of the plant to the leaves to be used for photosynthesis. The process is somewhat easier for short plants and shrubs as their leaves are close to the ground and the water doesn't need to travel very far to reach the leaves. For tall plants however, it's quite different.

The cohesive and adhesive properties of water enable tall plants to pull water from their roots. adhesion makes water molecules stick to the walls of the xylem vessel, and cohesion makes water molecules stick together. A combination of the two brings about capillary action, which accounts for the movement of water up xylem cells. However, this is not the most important factor.

Capillary action alone can only pull water about halfway through the xylem of tall trees before coming under the influence of gravity. When water evaporates from the stomata in the leaves, it creates a kind of vacuum in the xylem. This effect pulls water from the roots all the way to the leaves, hence, the important factor in pulling water towards the top of a tall tree is the evaporation of water through the stomata.

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The probability of getting tt is around, 1/4 or 25 percent. The other possible genotypes are TT and Tt, which are both tall plants. The probability of getting a tall plant is 3/4 or 75 percent (TT and Tt combined).

Genotypes are the genetic makeup of an organism, which refers to the specific combination of alleles or versions of genes that an individual has for a particular trait. Each individual has two alleles for each gene, one inherited from each parent. The combination of these two alleles determines the genotype for that gene.

When crossing two heterozygous tall plants (Tt x Tt), the Punnett square will have four boxes. Each box represents a possible combination of alleles from the parents. The alleles for height are T (tall) and t (short). The recessive allele is represented by a lowercase letter and the dominant allele is represented by a capital letter. The Punnett square would look like this:

      T       t

T TT Tt

t Tt tt

The possible genotypes of the offspring are tt, TT , and Tt. The percentage of offspring that are tt is 25 percent or 1 out of 4. This is because the tt genotype is recessive and can only occur if both alleles are t. The probability of getting tt is around, 1/4 or 25 percent. The other possible genotypes are TT and Tt, which are both tall plants. The probability of getting a tall plant is 3/4 or 75 percent (TT and Tt combined).

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Answer:

electrons

Explanation:

Answer:

because it store the outflow of water during transpiration.

Answer: infarct

Explanation:

Answer:

this is how long the universe to travel around the earth once

The diversity that refers to all the different genes contained in all members of a population is genetic diversity.

The correct answer is A.

Gene diversity is the diversity of individuals within one species of living thing. Gene diversity results in variations between individuals of the same kind. Examples of diversity at this gene level are white roses, red roses, and yellow roses which have differences, namely differences in terms of flower color.

The characteristics of genetic diversity are: Each individual has many genes, if there is a crossing between individuals with different characteristics it will produce offspring with many variations.

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Antitrust enforcement is controversial mainly because antitrust enforcement may lead to higher prices for consumers and may affect the ability of companies to innovate and compete on the world market. Department of Justice strives to strike a balance between promoting competition and ensuring that antitrust enforcement measures do not unduly harm innovation or negatively impact consumer welfare.

Antitrust enforcement is an action taken by the government to stop anticompetitive practices by companies, such as price-fixing and monopolies. While antitrust laws were created to promote competition and protect consumers, they can also have unintended consequences.Antitrust enforcement can lead to higher prices for consumers, as companies that are forced to break up or stop certain practices may no longer be able to provide goods or services at lower prices.

It can also affect the ability of companies to innovate and compete on the world market as some companies may choose to merge rather than risk antitrust enforcement. This can lead to the creation of larger, more powerful companies that may have less incentive to innovate and compete.

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Answer:

The lack of natural predators allows invasive populations to increase very quickly.

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 statement that best describes fossil record is that fossil record provides evidence of a common ancestor to many species.

A Fossil record can be defined as a geological record that shows the preserved remains of organisms that existed in the past which are under or within rocks for many years.

The importance of fossil record is that they provide evidence for evolution and the adaptation of plants and animals to their environments.

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Answer:

It may be 2 and 3 only but this is not my strong suit so I dont know

Explanation:

Answer:

Fitness

Fitness is the measure of how well an individual can survive as well as reproduce.

Vascular grafts with rigid rings built into them are known as "stented grafts". The purpose of these rings is to provide structural support to the graft and prevent it from collapsing or kinking.

This is particularly important in areas where the graft must bend or flex, such as in the presence of joints or in areas of the body that experience a lot of movement. Stented grafts are commonly used in procedures such as peripheral artery bypass, aortic aneurysm repair, and hemodialysis access. By providing additional support, stented grafts can improve the longevity and durability of the graft and reduce the likelihood of complications such as occlusion or thrombosis. Stented grafts are available in a range of sizes and configurations, allowing for precise customization to the needs of each individual patient.

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Answer:

Lynn Margulis proposed the endosymbiotic theory. The theory states that eukaryotic cells evolved from a symbiotic relationship between free-living bacteria and a protist cell. A eukaryotic cell would go through phagocytosis and engulfs bacteria. This bacteria later evolved into either mitochondria or cholorplasts.

Answer:

A. Carbon flux refers to the movement of carbon from one reservoir to another. It is a crucial component of the carbon cycle and plays a significant role in the Earth's climate system. Carbon flux can occur through various processes such as photosynthesis, respiration, combustion, and decomposition. The movement of carbon between different reservoirs such as the atmosphere, oceans, and land surface, influences the concentration of atmospheric CO2 and affects the Earth's climate.

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DNA replication is not possible in the banana plant's cells, which prevents cell division and restricts growth.

Successful seed germination is extremely rare in triploids because they rarely produce eggs or sperm with a balanced set of chromosomes.

Most sterile plants don't produce any fruits, and triploid bananas are sterile. The banana fruit, which is the mammalian equivalent of a placenta without fertilisation or an embryo, is produced without any seeds, however. Bananas are sterile and seedless, like other odd polyploids (with three sets of chromosomes), because one set of chromosomes (A or B) lacks a homologous set to pair with during synapsis of meiosis. Because of this, meiosis is disrupted, and no viable gametes (sex cells) are produced.

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Our ecosystems' health is significantly influenced by turkey vultures. They act as nature's cleanup crews by getting rid of decaying, corpses. Thus, option C is correct.

Vultures perform a crucial role in maintaining the balance of our ecosystems. Without them, carcasses would build up and rotting flesh would cause diseases to spread.

Which prevents the spread of certain diseases and makes the air smell much nicer overall.

Since their incredibly potent stomach acids destroy many of the poisonous substances found in dead animals, they ingest carrion quickly before it decomposes.

Given that they primarily eat dead animal corpses, vultures are excellent at cleaning out illnesses and toxins from the environment.

Therefore, Turkey vultures are carnivores which feed upon decaying animal matter.

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Full Question ;

Turkey vultures eat carrion, which is decaying animal matter, like roadkill. How are they classified?(1 point)

autotroph

herbivore

carnivore

omnivore

e. Vesicles "bud off" of the Golgi complex.

The Golgi complex, also known as the Golgi apparatus, is an organelle within cells responsible for processing, modifying, and sorting various molecules, including proteins and lipids. One of its functions is to package these molecules into vesicles for transportation to different cellular destinations.

Vesicles are small, membrane-bound sacs that transport molecules within the cell. They bud off from the Golgi complex during a process called vesicular trafficking. This process involves the formation of transport vesicles that carry molecules from the Golgi apparatus to other parts of the cell, such as the plasma membrane or other organelles.

These vesicles can contain a variety of molecules, including proteins, lipids, and carbohydrates. They play a crucial role in intracellular transport, allowing molecules to be delivered to specific locations within the cell or exported outside the cell.

While nuclei (a), cytoskeleton (b), ribosomes (c), and cells (d) are all important components of cells, they do not "bud off" from the Golgi complex. Vesicles, on the other hand, are directly involved in the transportation of molecules from the Golgi complex, making them the correct answer in this context.

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Answer:.

Explanation:

Promoter and the process of locating itThe promoter is a DNA segment that comprises the transcriptional start site and the binding sites for RNA polymerase and other regulatory proteins.

Bacterial RNA polymerase locates the promoter region by recognizing the consensus sequences present in the promoter region.The four distinct steps in bacterial transcription are initiation, elongation, termination, and post-transcriptional processing.The process of bacterial transcription starts when the RNA polymerase binds to the promoter region. Once the RNA polymerase is bound to the promoter, it unwinds the DNA strands and initiates the synthesis of a new RNA chain from the template DNA strand.

This initial step of transcription is called initiation. During the elongation phase, RNA polymerase extends the RNA chain in a 5' to 3' direction, following the DNA template. The termination phase occurs when RNA polymerase encounters a termination signal, leading to the release of the newly synthesized RNA molecule from the template DNA strand. Finally, post-transcriptional processing involves the modification of the newly synthesized RNA chain to form mature RNA that can be used by the cell for protein synthesis.

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It is true that both synergism and permissiveness can increase the effect of a hormone.

Both synergism and permissiveness can increase hormone effects, leading to a more significant physiological response.

Synergism is when two or more hormones work together to produce a physiological response that is greater than the sum of their individual effects. For example, both glucagon and epinephrine stimulate the release of glucose from the liver, but when they act together, they have a much more significant effect on blood glucose levels than either hormone alone.

Permissiveness, on the other hand, occurs when one hormone cannot exert its full effect unless another hormone is present, even though the second hormone has no effect on its own. An example is the role of thyroid hormone on the development of the nervous system: the action of thyroid hormone is permissive for the full development of the nervous system, although thyroid hormone does not directly participate in the process.

Therefore, both synergism and permissiveness are mechanisms by which hormones can interact to produce a more robust physiological response than either hormone alone, effectively increasing hormone effects.

The statement is true that both synergism and permissiveness can increase hormone effects.

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