A student observes a cell under a microscope. She sees a cell wall and a nucleus. What type of cell is she observing?
O eukaryotic animal cell
O eukaryotic plant cell
O prokaryotic cell
O bacterial cell

Answer:

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Explanation:

Answer:

your answer is attached

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Answer: B

Explanation: B is the answer because scientists use modeling for experiments.

Answer:

Genotype Ratio: 1:4

Phenotype Ratio: 1:4

Explanation:

Tt x tt

So, it tells us that for sure the mother has 2 recessive alleles and the father has for sure at least 1 dominant allele and 1 recessive allele (we know this because the offspring can only have a recessive trait if the offspring has 2 recessives, this can only happen if the father has a dominant and a recessive allele). If you put this into the Punnett Square you should find that the probability of Tt is 50% and tt is also 50%.

this would make both the Genotype and the Phenotype 1:4

Answer:

Here are two examples of how homeostasis regulates different aspects of the body: Get homework help from firstgradeessays[at]gm ail. c om. Quality is a priority.

Body Temperature Regulation: The human body has a set temperature range (around 36-37 degrees Celsius or 98-99 degrees Fahrenheit) that needs to be maintained for optimal functioning. When the body temperature rises due to exercise or external heat, homeostatic mechanisms helps to cool the body. These mechanisms include sweating, which helps dissipate heat through evaporation. Dilation of blood vessels near the skin surface facilitates heat loss. Conversely, if body temperature drops, homeostatic responses like shivering and constriction of blood vessels occur to generate heat and conserve warmth.

Blood Glucose Regulation: Maintaining blood glucose levels within a narrow range is crucial for proper physiological functioning. After a meal, blood glucose levels increase, triggering the release of insulin from the pancreas. Insulin helps facilitate the uptake of glucose by cells, reducing blood glucose levels back to normal. On the other hand, when blood glucose levels drop (e.g., during fasting or exercise), the pancreas releases glucagon, which stimulates the liver to release stored glucose into the bloodstream. This process raises the blood glucose levels and restores homeostasis.

Explanation:

Answer:

it is a Eukaryotic cell (B)

Explanation:

by process of elimination we can limit it down to B and D, a prokaryotic cell would look nothing like this so therefore it is B

The cell shown in the figure is a model of an eukaryotic cell. An eukaryotic cell consists of all the cell organelles and a well-defined nucleus. Thus, the correct option is B.

An eukaryotic cell is also known as a true cell. These cells contain all the membranous cell organelles such as mitochondria, chloroplast, etc. and a true well-defined nucleus which are absent in the prokaryotic cell. An outer cell wall or cell membrane is present which encloses the protoplast (living matter) of the cell.

All the animals and plants are made up of eukaryotic cells. These cells contain all the organelles and hence are capable of independent existence. The genetic material is present in the form of DNA (deoxyribonucleic acid) in the nucleus of cells.

Therefore, the correct option is B.

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Answer:

White

Explanation:

It is necessary for cells to have nucleus acids in their nucleus because they carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.

A nucleic acid is a chain of nucleotides that biological systems use to store genetic information. It produces the DNA and RNA molecules, which hold the data necessary for cells to produce proteins.

A "polymer" of "nucleotides," or a long molecule made up of them, is referred to as nucleic acid. All life on Earth needs nucleic acids to store genetic information; in other words, nucleic acids serve as the "source code" or fundamental blueprint for the creation of cells.

Your genetic information, which you acquired from your parents, is stored and transmitted by nucleic acids. Genes are unique pieces of nucleic acids that are in charge of creating every protein in your body. 

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1. If the individual with the dominant phenotype has an affected parent with a recessive phenotype.

2. If the individual with the dominant phenotype has affected offspring with a recessive phenotype.

In a pedigree, two situations can help determine the genotype of an individual with a dominant phenotype.

1. If an individual with the dominant phenotype has offspring with a recessive phenotype, it indicates that the individual must be heterozygous (carrying one dominant and one recessive allele).

This conclusion is drawn because the recessive phenotype can only be expressed when an individual has two copies of the recessive allele.

2. Another situation is when both parents have the dominant phenotype, but they produce offspring with the recessive phenotype.

This scenario suggests that both parents are heterozygous (carrying one dominant and one recessive allele), and the recessive phenotype appears in their offspring due to the inheritance of two recessive alleles.

By analyzing these patterns in the pedigree, we can make inferences about the genotype of individuals exhibiting dominant phenotypes.

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Answer:

The Origins Of The Word 'Cell' In the 1660s, Robert Hooke looked through a primitive microscope at a thinly cut piece of cork. He saw a series of walled boxes that reminded him of the tiny rooms, or cellula, occupied by monks. Medical historian Dr. Howard Markel discusses Hooke's coining of the word "cell."

Answer:

B. it combusts

Explanation:

Water doesn't combust since it isn't flammable. Hydrogen is flammable, but oxygen isn't.

Water=H2O.

Respiratory therapist- A person who is trained to have cardio and pulmonary care for patients who have health related disorder related to these.

Qualification-They should have

The environment needs to change in order for natural selection to occur.

Populations have some genetic variation.

Nature selects organisms with specific traits to survive and reproduce.

Natural selection is a cycle that occurs when traits that are advantageous to an organic entity's survival and reproduction are passed on to the offspring.

Genetic diversity in populations of organisms means that different individuals within a population might have a wide range of characteristics.

Nature chooses creatures with specific characteristics that are best suited to survive and thrive in the environment.

These organisms are more likely to pass on their beneficial traits to their offspring, leading to the gradual evolution of a population over time.

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Using natural selection, evolution is the process by which a species' characteristics change over several generations. The three constraints of Darwin's hypothesis concern the beginning of DNA, the unchangeable intricacy of the cell, and the lack of momentary species.

When a species splits into multiple new forms as a result of a shift in the environment that opens up new resources or introduces new environmental obstacles. Darwin's finches on the Galapagos Islands have created different molded snouts to exploit the various types of food accessible on various islands.

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Sponges are members of the Phylum Porifera. They are basic animal consisting of many cells. They are described as lacking with true tissue or no body symmetry. Sponges are unsymmetrical or without body plan symmetry.

Answer - Sponges lack definite symmetry

Number 2 is 3

Number 3 is 3

Answer:

A type of allele which will not be manifested in an individual unless both of the individual's copies of that gene have that particular genotype.

Explanation:

Higher yield, more food and more profit are the benefits of genetically engineered plants whereas production of toxins and allergic reactions are the risks of genetically engineered plants.

Genetically engineered plants has many benefits such as greater access to affordable and healthy food, higher crop yields, and more profits for farmers.

Genetically engineered crops could be harmful because these crops sometimes produces toxins which causes more damage to the people. Genetically engineered crops could cause allergic reactions in people. Pollen produced by the plants could be toxic and harm insects that transfer it between plants.

So we can conclude that higher yield, more food and more profit are the benefits of genetically engineered plants whereas production of toxins and allergic reactions are the risks of genetically engineered plants.

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The phenomenon in which when Bаlаnus аnd Chthаmаlus occur together, Chthаmаlus аdults аre found only in the more stressful upper portions of the habitat where they are more prone to desiccation is an example of competitive exclusion reducing the size of Chthamalus' fundamental niche to a smaller realized niche.

А niche is the term thаt refers to how а pаrticulаr orgаnism fits into its environment. This includes its food source, hаbitаt, its predаtors, аnd аll effects it hаs on the ecosystem.

The bаrnаcle species Chthаmаlus stellаtus аnd Bаlаnus bаlаnoides аre found growing in the rocky intertidаl zone off the coаst of Scotlаnd. Intertidаl zones frequently show verticаl zonаtion of species bаsed on their аbilities to survive periods of exposure to the аir during low tides, аnd wаve аction followed by submersion during high tides.

Bаlаnus is consistently found on lower rock surfаces, usuаlly neаr meаn tide level or slightly аbove. Chthаmаlus, however, is found on the upper rocks, between meаn high neаp tide аnd meаn high spring tide. While the аdults of these two bаrnаcle species hаve non-overlаpping distributions, the lаrvаe of both species settle over а wide vаriety of rock surfаces, showing а greаt deаl of overlаp.

Your question is incomplete, but most probably your full question was

In some rocky intertidal habitats, the barnacle Chthamalus can survive across the same depths as can the barnacle Balanus. However, where the two occur together, Chthamalus adults are found only in the more stressful upper portions of the habitat where they are more prone to desiccation. This is an example of:

A. competitive exclusion expanding the size of Balanus' realized niche to a larger fundamental niche.

B. intraspecific competition reducing the size of Chthamalus' fundamental niche to a smaller realized niche.

C. mutualism reducing the size of Balanus' realized niche to a smaller fundamental niche.

D. competitive exclusion reducing the size of Chthamalus' fundamental niche to a smaller realized niche.

E. the mutualistic form of symbiosis.

Thus, the correct answer is D.

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Weeks per treatment divided by weeks in a year equals the number of treatments. Due to the terrible weather, Jim's dog would thus require 4 additional treatments.

52 weeks make up a calendar year.

3 weeks are the flea treatment period because of the weather.

Treatment for fleas typically lasts four weeks.

He will receive how many flea treatments in a year according to the formula below:

52 / 3 = 17. 333 = 17 treatments when the weather is normal.

52 / 4 = 13 treatments when there is bad weather

Treatment difference is equal to 17 - 13 = 4.

Jim's dog would therefore have 4 extra treatments due to the terrible weather than he would have under normal circumstances.

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The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.

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When a species' population is limited to the less than 50 adult individuals, it is deemed severely endangered.

Depending on how seriously they are threatened, threatened species are divided into three categories by the International Union for the Conservation of Nature: vulnerable, endangered, and severely endangered.

Multilateral Environmental Agreement decisions are based in part on information from the IUCN Red List. It is frequently used as a guide to update the annexes of certain significant international accords, including the Convention of Migratory Species and the Convention of Threatened Species (CITES) (CMS).

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Each pair of alleles represents the genotype of a specific gene.

Alleles are defined as the pairs of genes, occupying a particular spot on a chromosome.

If the population size of sea otters decreases, then the population of the giant kelp will also decrease. In the diagram, sea otters consume sea urchins; thus, sea otters are those that keep the population of sea urchins in check. If there are fewer sea otters, fewer sea urchins are eaten, and the population of sea urchins will rise. In the diagram, the sea urchins consume giant kelp. Thus, since the sea urchins have a larger population, more of the giant kelp is being eaten, decreasing the population of the giant kelp.

A decrease in the population size of California sea otters is likely to have a negative impact on the population size of giant kelp in the kelp forests.

This is because California sea otters play a crucial role in maintaining a balance within the ecosystem through their feeding behavior. Sea otters primarily feed on sea urchins, which are natural grazers of giant kelp. By preying on sea urchins, sea otters control their population and prevent them from overgrazing on giant kelp.

If the population size of sea otters decreases, there will be fewer otters available to regulate the sea urchin population. As a result, sea urchin numbers may increase, leading to excessive grazing on giant kelp. Overgrazing can have detrimental effects on giant kelp, reducing its abundance and overall population size. Without the presence of sea otters to keep sea urchins in check, the giant kelp population may experience a decline.

Therefore, a decrease in the population size of California sea otters is likely to disrupt the balance of the ecosystem and negatively impact the population size of giant kelp in the kelp forests.

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Answer:

4,200 Blades

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Answer: it is 300

Explanation: