An uncharged atom has an atomic number of 7 and an atomic mass of 14. How many electrons does this atom need to acquire in its outer most electron shell in order to be considered “stable?
A. 8
B. 3
C. 5
D. 1

The statement "There are all macronutrients" is true about these types of molecules

Macronutrients, essential components required by the body in substantial quantities, furnish energy, foster tissue growth and mending, and govern physiological processes. The trio of primary macronutrients encompasses carbohydrates, protein, and fat.

The precise magnitude of macronutrient requisites relies on factors such as age, gender, physical exertion, and overall well-being of an individual.

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Complete question:

Fats, sugars, and proteins are important food molecules. Which statement about these types of molecules is true?

a. There are all  macronutrients

b. Sugar makes one fat

c. Sugar is the only thing that makes you fat

Carotid sinus syncope refers to a condition characterized by a sudden loss of consciousness or fainting (syncope) that occurs due to an abnormal response of the carotid sinus, a small structure located in the neck. The carotid sinus contains baroreceptors, which are sensory receptors that monitor blood pressure.

In the case of Ms. G, her episode of syncope while showering was likely triggered by the pulsatile shower head. The carotid sinus is sensitive to changes in pressure, and certain stimuli, such as pressure on the neck, can result in an overstimulation of the carotid sinus baroreceptors.

The pulsatile nature of the shower head may have caused an increased pressure or stimulation on Ms. G's carotid sinus during her shower. This excessive stimulation of the carotid sinus baroreceptors led to a reflex response that caused a sudden drop in heart rate and blood pressure, resulting in syncope.

Carotid sinus syncope is typically diagnosed based on the patient's history, clinical symptoms, and sometimes with additional tests such as carotid sinus massage or tilt table testing. Treatment options for carotid sinus syncope may include avoiding triggering factors, modifying lifestyle, and in some cases, medication or pacemaker implantation.

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Answer:

A. Oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible.

Explanation:

The Cambrian explosion was an event that happened approximately 541 million years ago and it lasted for about 13 – 25 million years.

The current hypothesis for the cause of the Cambrian explosion is that oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible.

Option A. is correct.

The statement 'oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible' is TRUE (Option A).

In conclusion, the statement 'oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible' is TRUE (Option A).

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Flowing water kinetic energy electricity - describes the correct order of energy conversions necessary to form electricity from a hydroelectric dam

One of the main parts of a hydroelectric facility is a hydroelectric dam that produces electricity. A hydroelectric dam is a substantial, artificial structure created to hold back a body of water. In addition to being built to generate hydroelectric electricity, hydroelectric dams are also built to manage flooding and river flow.

The water intake is located quite close to the base of the hydroelectric dam wall. It drops through the penstock inside the hydroelectric dam because to gravity. A turbine propellor, which is rotated by the flowing water, is located at the end of the penstock. The turbine's shaft ascends into the generator, which generates the energy.

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Option C: Flowing water → Kinetic → Electricity

Answer:

Human red blood cells Human cheek cells Does not have nucleus. Have nucleus. Biconcave shape. ... Animal cells do not have cell wall and the cells are in irregular shape whereas plant cells have cell wall and the cells are in regular shape.

Explanation:

Goodluck

Answer:2

Explanation:

The DNA structure is as follows:

The DNA molecule is a double-stranded molecule which consists of singles strands of DNA linked together by hydrogen bonds between nitrogenous bases.

The DNA structure is as follows:

In conclusion, the DNA is a double-stranded molecule.

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The evidence that related to the Big bang theory best supports the universe is warming very rapidly and the radiations from the Big bang is distributed evenly in the universe. Thus, the correct options are 3 and 4.

The Big Bang theory is an explanation that supports the early development of the Universe. According to the big bang theory, the Universe expanded from an extremely small, extremely hot, and dense state that does not support life. Since the universe has expanded and become less dense and cooler and gradually the conditions on the planet become favorable.

Some of the key observations that supports the big bang theory include expansion of the universe, cosmic microwave radiations, and the abundance of the lightest chemical elements.

Therefore, the correct options are 3 and 4.

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The most likely explanation for the decrease in the density of gas particles in a section of Earth's atmosphere is that the air pressure in that section of the atmosphere decreased.

Density is defined as mass per unit volume. In the case of a gas, density is directly related to the number of gas particles (molecules or atoms) present in a given volume. When the air pressure decreases, it means that there are fewer gas particles exerting force per unit area. As a result, the density of gas particles in that section of the atmosphere decreases.

Air pressure is the force exerted by the gas particles on the walls of the container or the surroundings. It is influenced by several factors, including temperature, altitude, and the presence of other gases. Changes in these factors can cause fluctuations in air pressure. For example, if there is a decrease in temperature, the gas particles lose kinetic energy, which leads to decreased pressure and density.

It is important to note that the total number of gas particles in Earth's atmosphere does not necessarily change significantly over short periods of time. The atmosphere is composed of a vast number of gas molecules, and while there may be variations due to natural processes, such as volcanic eruptions or biological activities, these changes are relatively small compared to the overall composition of the atmosphere.

Therefore, the most likely explanation for the decrease in density of gas particles in a section of Earth's atmosphere is a decrease in air pressure, which can occur due to various factors such as weather systems, changes in altitude, or movement of air masses.

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Answer: They have a son , Les who is 9 years old and healthy with myopia but not galactosemia. Les is unaffected with galactosemia.

Explanation:

From the family story, Leah is the only child affected with galactosemia while Les is unaffected and healthy.

Hanna's father and mother have three daughters and they are Hope, Holly and Banana( from oldest to youngest).

Hanan and Harry have an only son called John.

John married Jane and they have two children, Leah and Les.

Leah is girl that is affected with galactosemia and Les who is a boy and he is unaffected with galactosemia.

Jane's mother is Hilda and she has a brother called Joe. Joe married Jen and they have a son called Les.

The three main characteristics of angiosperms are flowers, fruit, and seeds.

Firstly, flowers are reproductive structures unique to angiosperms. They serve as the site for pollination, where pollen grains are transferred from the male reproductive organs (anthers) to the female reproductive organs (stigma). This process leads to fertilization and the development of seeds.

Secondly, angiosperms produce fruit, which is formed from the ovary of the flower after fertilization. Fruits serve as protective structures for the developing seeds and aid in seed dispersal by various means, such as wind, water, animals, or self-dispersal mechanisms.

Lastly, angiosperms produce seeds as part of their reproductive cycle. Seeds contain the embryonic plant, stored nutrients, and a protective seed coat. This adaptation allows for the survival and dispersal of offspring to new locations.

Angiosperms are a diverse group of plants and can be further classified into monocots and dicots based on the number of cotyledons (embryonic seed leaves). Monocots have a single cotyledon, while dicots have two cotyledons.

In summary, the three main characteristics of angiosperms are flowers for reproduction, fruit for seed protection and dispersal, and seeds for embryonic development and propagation.

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Answer:

recessive

Explanation:

A lethal allele is a gene variant associated with a mutation in an essential gene, which has the potential to cause the death of an individual. In general, lethal genes are recessive because these alleles do not cause death in heterozygous individuals, which have one copy of the normal allele and one copy of the allele for the lethal disease/disorder. In recessive lethal diseases, heterozygous individuals are carriers of the recessive lethal allele and can eventually pass the 'defective' allele on to offspring even though they are unaffected; whereas dominant lethal diseases are caused by dominant lethal alleles, which only need to be present in one copy to be fatal. In consequence, the frequency of recessive lethal alleles is generally higher than dominant lethal alleles because they can be masked in carrier individuals. Some examples of human diseases caused by recessive lethal alleles include, among others, Tay-Sachs disease, sickle-cell anemia, and cystic fibrosis.

The frequency of a lethal allele in a population is greatest when it is: C. recessive.

A lethal allele can be defined as an allele that is responsible for the death of a living organism, especially by preventing its development. Thus, a lethal allele causes a complete mortality in the living organism carrying it, in a hom-ozygous condition.

Basically, a lethal allele is recessive in nature because it is expressed in the phenotype of an organism. Some examples of diseases caused by lethal alleles in humans are:

In conclusion, a lethal allele that is recessive has the greatest frequency in a population.

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Answer:

During excitation-contraction coupling, calcium ion concentration is highest in the:

sarcoplasmic reticulum.

terminal cisterna.

cytosol of the muscle fiber.

sarcolemma.

Explanation:

Answer:

Color Blindness Fragile X Syndrome: Disorder that is the most common cause of inherited mental impairment....

Duchenne Muscular Dystrophy: Disorder caused by the lack of dystrophin...

Hemophilia Disorder: caused by the absence or minimal presence of factor Vill or factor IX...

Colour blindness (Daltonism): Disorder that affects the ability to, in most cases distinguish reds from greens

Explanation:

Fragile X syndrome is an inherited disease associated with different health problems during development including cognitive disabilities.

Duchenne is an inherited disorder caused by a mutation in the dystrophin gene that encodes a protein required for normal muscle functioning.

Hemophilia is an inherited disorder caused by mutations in the genes that encode for coagulation factors, which are required for normal blood coagulation.

Colour blindness is an inherited condition associated with the ability to distinguish red color from green color. This condition is caused by mutations in the genes that encode for red and green light-sensitive proteins.

Answer:

Chemiosmosis is involved in the production of adenosine triphosphate (ATP), which is the main molecule used for energy by the cell.

Most dietary fats are too large to be assimilated and absorbed into the capillaries but they are otherwise absorbed into the lacteals.

Dietary fat is necessary for good health. It offers you strength and aids in the absorption of vitamins by your body. Dietary fat has about twice as much energy per gram as carbs and protein.

In the villi ( an organ in the small intestine) is located the lacteal which is a lymphatic capillary that absorbs and assimilates dietary fats. 

Most nutrients are also absorbed through the blood capillaries, but as for dietary fats and fat-soluble vitamins, they are absorbed by the lacteals.

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Answer: The answer is D

prokaryotes are a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles

1. I used 1 gallon of water each time I washed my hands. This means that I used 7 gallons of water in a week and 365 gallons of water in a year.

2. I used 1 cup of water each time I brushed my teeth. This means that I used 7 cups of water in a week and 365 cups of water in a year.

In science, a hypothesis is an educated guess about how things work. It is a statement that can be tested to see if it is true. A hypothesis is not a fact, but it is a starting point for scientific inquiry.

3. The Florida site suggests that we all cut our water use by 10%. To cut my water use by 10% for washing my hands, I could turn off the faucet while I am lathering my hands with soap. To cut my water use by 10% for brushing my teeth, I could turn off the faucet while I am rinsing my mouth. I could also brush my teeth with less water.

4. My showers were each 10 minutes long. If I cut two minutes off each shower, I would save 2 gallons of water each time I shower. This would save me 140 gallons of water in a year. This is a feasible option for me because I do not need to shower for 10 minutes to get clean.

5. I do not take baths.

6. I could help conserve water for my entire household by fixing any leaks in the pipes. I could also install low-flow faucets and showerheads. I could also encourage my family to take shorter showers and to turn off the faucet while they are brushing their teeth.

7. Some suggestions from the course activity website that my family could follow to save water include:

8. My hypothesis was that I would use more water than I actually did. My actual water use was much lower than I expected. This is because I took steps to conserve water, such as turning off the faucet while I am lathering my hands with soap and while I am rinsing my mouth. I also brushed my teeth with less water.

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Asexually reproducing aliens would be more susceptible to the NASA-created virus. Option A is correct.

This is due to the fact that asexual reproduction creates genetically identical offspring through the process of mitosis without the transfer of genetic material from one person to another. Because of this lack of genetic diversity, any mutation or genetic change caused by the virus would have an impact on the entire population. On the other hand, through meiosis and fertilisation, sexually reproducing aliens create offspring with distinctive genetic material. Due to the fact that different people would react to the virus differently due to genetic diversity, it would be more challenging for the virus to infect the entire population. As a result, the virus would spread more readily and have a greater effect on the asexually reproducing aliens.

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Over time, the finches that were born with beaks better suited to the available food supply in their habitat survived and reproduced. The correct option is D.

The process through which populations of living things adapt and change is known as natural selection.

A population's members are naturally varied, which means that they are all distinctive in some ways. This variety indicates that some people have characteristics that are more environment-appropriate than others.

Some of them were better suited to extracting seeds from cactus fruit due to their long, pointed beaks. For eating seeds that were discovered on the ground, shorter, sturdier beaks were preferable.

The finches that were born with beaks that were more suited to the food supply in their habitat over time survived and multiplied.

Thus, the correct option is D.

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Answer:

answer what there is nothing there

Answer:

A the most usable energy for cells comes from the rapid combustion of glucose

The statement 'the most usable energy for cells comes from the rapid combustion of glucose' is FALSE (Option 1).

In conclusion, the statement 'the most usable energy for cells comes from the rapid combustion of glucose' is FALSE (Option 1).

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Answer:

The modern horse, in addition to having much longer legs, has developed hooves in place of hand/foot bones.

Explanation:

Just read the text :)

Sequestration process is negatively impacted by deforestation, leading to increased global warming.

The deliberate clearance of wooded terrain is known as deforestation. Forests have been cleared throughout history and into the present era to make room for agriculture and animal grazing as well as to gather wood for fuel, manufacture, and construction.

Around the world, deforestation has significantly changed the terrain. Approximately 2,000 years ago, Western Europe was 80 percent wooded; now, it is only 34 percent. Between the 1600s and the 1870s, almost half of the woods in eastern North America were cleared for agriculture and logging. Over the previous 4,000 years, large areas of China's woods have been destroyed, and just little more than 20% of the country is today covered in trees. Earth's cropland was previously mostly covered with trees.

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The preserved remains of ancient organisms, such as dinosaur skeletons, are called fossils.

This means d) fossil, is the right answer.

Answer:

B

Explanation:

The rate of diffusion generally increases as the concentration of the dye increases due to the steeper concentration gradient, facilitating faster movement of particles from regions of higher to lower concentration.

The relationship between the concentration of a dye and the rate of diffusion can be described as follows:

As the concentration of the dye increases, the rate of diffusion generally increases as well. Diffusion is the process by which molecules or particles move from an area of higher concentration to an area of lower concentration. The driving force behind diffusion is the concentration gradient, which is the difference in concentration between two regions.

When the concentration of the dye is high, there is a steeper concentration gradient, meaning there is a larger difference in concentration between the region where the dye is highly concentrated and the region where it is less concentrated. This steep concentration gradient facilitates faster diffusion, as the dye particles have a greater tendency to move from the higher concentration area to the lower concentration area.

On the other hand, when the concentration of the dye is low, the concentration gradient is less steep, resulting in slower diffusion. The smaller difference in concentration between the two regions reduces the driving force for diffusion, leading to a slower rate of diffusion.

It is important to note that the relationship between dye concentration and diffusion rate is not always linear. At extremely high concentrations, other factors such as the viscosity of the medium or interactions between dye molecules may come into play and affect the diffusion process.

In summary, the concentration of a dye and the rate of diffusion are generally positively correlated. Higher dye concentrations result in steeper concentration gradients, promoting faster diffusion, while lower dye concentrations lead to slower diffusion rates due to less pronounced concentration gradients.

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Answer:

B. Epithelial

Explanation:

The respiratory segment comprises most of each nasal cavity, and is lined with ciliated pseudostratified columnar epithelium (also called respiratory epithelium).