who was the first woman to go into space









this is of 100 points​

Economics is a social science concerned with the best use of scarce resources to achieve the maximum satisfaction of economic wants. The correct option is A.

"Economics is the social science concerned with making the best use of scarce resources in order to maximize the satisfaction of society's limitless demands."

"Microeconomics is the branch of economics that deals with individual entities such as industries, firms, and homes."

Therefore, the correct option is A. The best use of scarce resources to achieve the maximum satisfaction of economic wants.

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In the process of transcription, DNA is used as a template for making another type of nucleic acid called RNA. The process begins when the enzyme RNA polymerase that binds to a region called the promoter sequence.

The cell process of gene transcription is a phenomenon for which a nucleic acid called RNA is created by means of one of a single-strand sequence of DNA, which is used as a template to generate a complementary RNA sequence that binds by complementarity pair basis rules. During transcription, an enzyme called RNA polymerase progressively adds nucleotides to the growing RNA chain, in a process that requires the binding with a DNA sequence called the promoter.

Therefore, with this data, we can see that the cell process of genetic transcription is based on the use of an RNA polymerase that initially binds to a DNA template strand.

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In the process of selective breeding, the kind of organism that can donate genes is those displaying beneficial features to be selected by artificial human selection.

The process of artificial human selection makes reference to the genetic cross of plants and animals by means of humans in order to select offspring in regard to a given trait such as for example yield in crops.

Therefore, with this data, we can see that the process of artificial human selection is based on beneficial features selected during selective breeding.

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After incubation, 86 colonies were counted on the 10-7 dilution plate. Only 0.1 ml was spread on the plate. The count in the original undiluted culture was 86,000,000

An undiluted culture refers to a microbial culture that has not been diluted with a solvent or diluent. An original undiluted culture refers to the original microbial culture, prior to any dilution.

In other words, it is the bacterial or fungal culture taken directly from the source without any additional liquid being added. The original undiluted culture is used as a starting point to create dilutions for plating and counting colonies

To determine the count in the original undiluted culture, you would need to multiply the number of colonies on the 10-7 dilution plate (86) by the dilution factor. In this case, the dilution factor is 10^7, so the original count in the undiluted culture would be:

86 x 10^7 = 86,000,000

So, the original culture has 86,000,000 colonies

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11) A bacterium produces offspring that are genetically identical, meaning they reproduce by asexual reproduction. Camel offspring inherit some genetic information from each parent, meaning humans reproduce by sexual reproduction. (Option B)

12) During the G2 phase of the cell cycle, the DNA replicates (Option A)

13) The correct order in which the (Cell Division) event occurs is CBAD (Option B).

Cell division is the process through which a parent cell splits into two daughter cells. Cell division is normally part of a wider cell cycle during which the cell develops and duplicates its chromosomes before dividing.

Cell division occurs in two stages: mitosis and meiosis. When most people say "cell division," they're referring to mitosis, the process of creating new body cells. Meiosis is the form of cell division that generates egg and sperm cells. Mitosis is a necessary step for life.

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Because the electromagnet will repel like poles or attract opposing poles, she can use the bar magnet to evaluate the direction of the magnetic field. She could point the magnetic field in the desired direction using a compass.

Start by using the magnet to pick up one paper clip to gauge its strength. Then connect a second paper clip with the end of the one that is hanging from the magnet. Providing your magnet has enough force

By measuring pull strength, magnetic pull tests determine the strength of the magnet. They operate by employing a test piece of metal, typically a plate for plate.

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Some factors that might slow or stop the introduction of this stem cell technology include:

Stem technology refers to a technique in medicine that employs the use of stem cells in medical treatment.

Stem cell treatment, commonly referred to as regenerative medicine, uses stem cells or their byproducts to encourage the repair response of sick, malfunctioning, or wounded tissue. It is the next step in the transplantation of organs, replacing donor organs—which are scarce—with cells.

Stem cells are the cells in the body that can become almost any type of cell in the body.

There are three main types of stem cells that are employed in stem cell therapy, namely;

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The principal advantage of the experimental method is it permits conclusions about cause-and-effect relationships.

Experimental research is a study conducted with a scientific approach using two sets of variables. The first set acts as a constant, which you use to measure the differences of the second set.

True experiments have four elements: manipulation, control , random assignment, and random selection. The most important of these elements are manipulation and control.

The goal of the experimental method is to provide more definitive conclusions about the causal relationships among the variables in a research hypothesis than what is available from correlational research.

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Answer:

LAB__The Missing Restaurant Owner

Explanation:

The following is a description of a murder case. The victim is a restaurant owner who was last known tobe at a bus stop approximately 800 meters from his home. He vanished and was never seen again.Witnesses testified that they heard yelling from the office of the victim’s restaurant about the time thevictim usually left work for home. Using this testimony, police established the identity of the man thevictim was arguing with, and they questioned him as a suspect. The suspect had scratches on his face,which he claimed were from a fight he had the previous evening, and soil particles in his ring andbracelet. The suspect had no explanation for the soil particles or for the reports of yelling from therestaurant office. After arresting the suspect, the police searched his car, the restaurant office, and thesurrounding countryside and gathered the following evidence:List of EvidenceFrom the suspect’s car (trunk):•Bloodstained watch with the clasp missing (identified as the victim’s)•Strands of hairFrom the restaurant office:•Clasp matching the watch from the suspect’s trunk•Blood samples from the floorCountryside:•Bloodstained clothes wrapped in trash bags similar to those used by the restaurant; samples of hairfrom one of the suspect’s dogs and thread from the suspect’s sweater found on the clothes•Knotted electrical cord with hairs that matched those found in the suspect’s trunkThe hairs found inthe car and on the electrical cord matched samples of the victim’s hair taken from his home

Answer:

When a solution is hypotonic,water will enter the cell and the cell swells up.

Answer:

2) The Element that have been discovered so far

Explanation:

The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.

In cnidarians, the gastrovascular system is also called a "blind gut" or "blind sac" of coelenterons, because food enters and waste exits through a single orifice.

Cnidarian is also called coelenterate which is a member of phylum Cnidaria (Coelenterata). They are a group made up of over 9,000 living species. Mostly marine animals, cnidarians include corals, hydra, jellyfish, Portuguese man-of-war, sea anemones, sea pens, sea whips, and sea fans.

Cnidarians have a blind sac body plan, an animal having a single opening that serves the dual function of ingestion as well as egress, meaning that food enters the gut through a single opening and after digestion, the undigested food moves out of it.

Thus, in cnidarians, the gastrovascular system is also called a "blind gut" or "blind sac" of coelenterons, because food enters and waste exits through a single orifice.

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Answer:

The effect of this substance on the growing root would be a reduction in growth rate and size due to the inability of the cells to divide and replicate. This would result in the root being stunted and not able to reach its full growth potential.

Explanation:

Applying a substance that prevents chromatid separation during mitosis would inhibit cell division in the growing onion root, leading to stunted growth and decreased cell production.

When a substance is applied to an onion root tip that prevents the separation of chromatids during mitosis, it results in the inhibition of cell division. This substance interferes with the process of mitosis, specifically the movement of chromatids to opposite poles of the cell.

As a result, the growing root would experience disruptions in cell division, which are essential for growth and development. With impaired cell division, the root would likely show stunted growth and a decrease in the number of cells produced.This experiment helps to understand the importance of proper chromosome separation during mitosis for the normal growth and development of organisms.

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Answer:

Growing replacement skin from stem cells can be valuable for a number of reasons:

Explanation:

Treating burns: Stem cells can be used to grow replacement skin for patients with severe burns, which can reduce the risk of infection and scarring, and improve the healing process.

Healing wounds: Stem cells can be used to grow new skin to help heal chronic wounds such as those seen in diabetes and pressure sores.

Reconstructive surgery: Stem cells can be used to grow replacement skin for patients who have undergone reconstructive surgery, such as breast reconstruction after a mastectomy.

Genetic skin disorders: Stem cells can be used to grow replacement skin for patients with genetic skin disorders such as epidermolysis bullosa, a genetic disorder that causes skin to be extremely fragile and prone to blisters.

Cosmetics: Stem cells can be used in cosmetics industry to develop new products that can help to improve skin conditions such as aging and wrinkles.

Cost-effective: Using stem cells to grow replacement skin can be more cost-effective than traditional methods such as skin grafts, which require a significant amount of healthy skin to be taken from another part of the body.

Ethical concerns: Using stem cells to grow replacement skin eliminates the need to use animal testing or animal-derived materials in the production of skin products.

Overall, growing replacement skin from stem cells offers a versatile and efficient way to help patients with various skin conditions, and can improve the quality of life for many people.

Answer:

Explanation:

astronomical units are used to measure the distance in space so it would be appropriate to measure the distance between the stars,galaxies, and planets .

Answer: B)

Explanation: Astronomical units are used to measure the distance in space so it would be appropriate to measure the distance between the stars, galaxies, and planets .

Answer:

D. a horse with a sciatic nerve injury after jumping a fence

Explanation:

As a veterinarian trained in chiropractic care, Dion would be most likely able to help a horse with a sciatic nerve injury after jumping a fence. Chiropractic care is a form of alternative medicine that focuses on the diagnosis and treatment of neuromuscular disorders. Sciatic nerve injury is a neuromuscular disorder that causes pain, weakness, and numbness in the legs and can be treated with Chiropractic adjustments.

Answer:

solution:

given;

power = 60 w

time = 1 hr = 3600 seconds

now,

   power = work done/time

or, 60 = work done/3600

or, work done = 3600 x 60

therefore, work done = 216000 J (joules)

This information refers to the population density of the rabbits in the certain area of forest.

What is population?

Population refers to the total number of people living in a specific area. Population size and density vary from place to place, depending on a variety of factors including climate, geography, political and economic conditions, and history. In general, population density is higher in areas with more resources, as people are drawn to areas where there are more employment and educational opportunities, as well as a higher standard of living. Population growth can also be affected by migration, both within a country and between countries. Population growth can be a positive or negative force, depending on the circumstances, and can have serious implications for a country's economic, social, and environmental stability.

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Option(A) Gene flow is process that can effectively alter the allele frequencies of population.

In population genetics, gene flow is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies and therefore can be considered a single effective population.

According to the most respected textbooks on genetics and evolution, an allele is a different arrangement of the same sequence of nucleotides at the same location on a lengthy DNA molecule. A locus is the chromosomal or genomic location of a gene or any other genetic element, and alleles are different DNA sequences at a locus.

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The statement  that  are correct based on the gene expression are:

A)Inactive DNA prevents the gene expression at the earliest stage.

B) Removal of the mRNA before it is translated can regulate the gene

E) Genetic Information in Cells expression

Gene expression is the process by which the genetic information encoded in DNA is converted into functional products, such as proteins or RNA molecules, that carry out specific cellular functions.

The process of gene expression begins with the transcription of DNA into RNA, which is a process where a specific segment of DNA is copied into a complementary RNA molecule.

Therefore, the RNA molecule is then used as a template to produce proteins through a process called translation. The proteins produced through this process play a crucial role in the cell and are responsible for a wide range of functions, including structural support, catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules across cell membranes.

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See full question below

A model for gene expression and regulation is shown here. Not all genes are expressed at all time, and a study of the proteins within

a cell indicates that not all of the gene products are present within a cell. Analyze the model and evaluate which statement(s) below

are correct based on the gene expression. Select ALL that apply.

A)

Inactive DNA prevents the gene expression at the earliest stage.

B)

Removal of the mRNA before it is translated can regulate the gene

expression

Regulation of the mRNA is the most efficient mechanism for reducing gene

expression.

D)

DNA, once transcribed, will produce multiple protein products with very

little regulation in the process.

The targeted destruction of the protein can reduce the overall expression

of the gene at a later stage in the process.

E)

Genetic Information in Cells

Answer:

Explanation:

an instance of being out of proportion with something else

Martin Luther disagreed with Johann Tetzel as he opposed the sale of indulgences on two grounds, the first being that everyone is entitled to forgiveness. Furthermore, the Pope lacked the authority to permit such a fundraiser.

To earn money for the renovation of Rome's St. Peter's Cathedral, a friar by the name of Johann Tetzel started selling indulgences. Sadly, Tetzel led individuals to believe that they could purchase their way to heaven by purchasing indulgences.

The German people were being sold indulgences by Tetzel. "When the money clings in the chest, a soul flies up to heavenly rest," was his catchphrase. Even for family members who had passed away, the indulgence purchases were valid receipts. Because they couldn't afford to purchase an indulgence, poor people had to spend more time in purgatory.

Martin Luther disagreed with this practice.

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The ability of the cell membrane to permit the passage of various substances is referred to as the cell's partial permeability.

The majority of the components are composed of pure substances. Only a few of these include diamond, gold, copper, oxygen, and chloride. Mixtures like water, salty crystals, baking powder, and others are examples of pure substances.

Biologically Active Ingredients: substances that are naturally occurring but nevertheless endanger enterprises' ability to act responsibly toward the environment. Examples include asbestos, mercury, arsenic, radon, pyrite, and pyrite. Most of these things are discovered while being created or constructed.

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Answer:

North-facing slopes are found in the northern hemisphere. They are characterized by being on the side of a hill or mountain that faces towards the north. These slopes are typically shaded and receive less sunlight than south-facing slopes, which are found on the opposite side of the hill or mountain.

To determine which way a slope is facing, you can use a compass or look for certain indicators such as the presence of moss or lichen, which typically grows on the north side of trees and rocks. Other indicators include the presence of certain types of vegetation, such as shade-loving plants, which are often found on north-facing slopes. The presence of snow or ice can also be an indicator, as north-facing slopes tend to be colder and receive less sunlight, which can cause snow and ice to linger longer.

Another way to know if a slope is North facing is by observing the direction of the sun. North facing slopes will be shaded during the morning hours, while south facing slopes will be illuminated.

In summary, the location, indicators from nature, and the direction of the sun can be used to determine if a slope is North facing.

Answer:

North-facing slopes in the northern hemisphere receive less direct sun exposure, hence they are often colder and more humid, whereas south-facing slopes are warmer and drier. Using a compass is the simplest technique to determine your slope aspect. You may also use a compass app if you have a smartphone. Stand with your back to the hill and your phone/compass facing directly away from it. You may read directly from an app.

Explanation:

Answer:

1 Hydrogen fuel for vehicles can solve global energy problems.

2 Governmental funding should support important programs on earth rather than space exploration.

Water usage should be regulated to ensure a continuing supply for major urban centers.

Government policy should encourage the use of biofuels.

Answer:

Biotic

Explanation:

In a particular ecosystem, caterpillar and parts of the soil are biotic components

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Answer:

C) They evolved from a common ancestor.

Explanation:

Species that have a common ancestor share genes called homologous genes. These genes were passed down from a single common ancestor, which explains the similar genetic sequences.

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Answer:

its the first one

Explanation:

Answer: 4:0

Explanation:

      B     B

b    Bb   Bb

b    Bb   Bb

All of the offspring will be black. Thus the ratio is 4:0