1

Select the correct answer from each drop-down menu.

Mark's dentist gives him a shot before performing a root canal. The dentist says the shot is anesthesia and that Mark won't feel any pain. Mark

feels his gums going numb, while the rest of his body is working fine. What has the anesthesia actually done?

The anesthesia has blocked

from carrying signals t

If a mammal did not obtain enough iodine in its diet, we might expect a decreased ability to produce thyroid hormones.

Hence option (a) is correct.

The creation of thyroid hormone requires the element iodine.

Iodine must be a component of your diet because the body cannot produce it.

There are several foods that contain iodine. You cannot produce enough thyroid hormone if your body is deficient in iodine.

Iodine deficiency can therefore result in intellectual problems in children and infants whose mothers were iodine deficient during pregnancy.

It can also cause hypothyroidism (see the hypothyroidism brochure), goitre, and thyroid enlargement.

Decreased iodine levels are not the only factor contributing to low thyroid function. Iodine deficiency, however, can result in various thyroid issues as well as a goitre, an abnormal enlargement of the thyroid gland. It may lead to mental impairments in youngsters.

Learn more about Iodine deficiency here https://brainly.com/question/13855419

#SPJ4

Anemia is a condition in which there is an abnormally low amount of hemoglobin. Red blood cells would be reduced in a person who is anemic.

Anemia  is defined as a low number of red blood cells. In a routine blood test, anemia is reported as a low hemoglobin or hematocrit. Hemoglobin is the main protein in your red blood cells. It carries oxygen, and delivers it throughout your body

Anemia is the most common blood condition in the U.S. It affects almost 6% of the population. Women, young children, and people with long-term diseases are more likely to have anemia. Important things to remember are:

Certain forms of anemia are passed down through your genes, and infants may have it from birth.

Women are at risk of iron-deficiency anemia because of blood loss from their periods and higher blood supply demands during pregnancy.

Older adults have a greater risk of anemia because they are more likely to have kidney disease or other chronic medical conditions.

There are many types of anemia. All have different causes and treatments. Some forms -- like the mild anemia that happens during pregnancy -- aren’t a major concern. But some types of anemia may reflect a serious underlying medical condition.

learn more about anemia at https://brainly.com/question/866200

#SPJ4

Answer:

The xylem.

Explanation:

They are transported by the xylem in the plant.

The chi-square value for Dr. Dopsis' proposal of recessive epistasis is 5.10.

Assuming Dr. Dopsis had a sample size of 100 F2 offspring, and the observed number of offspring for each phenotype was as follows:

Phenotype A: 42

Phenotype B: 23

Phenotype C: 35

To work out the chi-square value for Dr. Dopsis' proposal of recessive epistasis, calculate the expected values for each phenotype based on the 9:4:3 ratio. The expected values for the three phenotypes would be:

9 ÷ 16 x total number of F2 offspring = expected number of offspring with phenotype A

Phenotype A: 9 ÷ 16 x 100 = 56.25

4 ÷ 16 x total number of F2 offspring = expected number of offspring with phenotype B

Phenotype B: 4 ÷ 16 x 100 = 25

3 ÷ 16 x total number of F2 offspring = expected number of offspring with phenotype C

Phenotype C: 3 ÷ 16 x 100 = 18.75

The chi-square value can then be calculated as follows:

χ² = ∑(O - E)² ÷ E

where O = observed value, E = expected value, and ∑ = sum over all phenotypes.

[(42-56.25)² ÷ 56.25] + [(23-25)² ÷ 25] + [(35-18.75)² ÷ 18.75] = 5.10

To learn more about epistasis follow the link:

https://brainly.com/question/30651608

#SPJ4

The correct question is:

Dr. O. Sophila, a close friend of Dr. Ara B. Dopsis, reviews the F2 results in Dr. Dopsis obtained in his experiment with iris plants described in Genetic Analysis. Dr. Sophila thinks the F2 progeny demonstrates that a single gene with incomplete dominance has produced a 1:2:1 ratio. Dr. Dopsis insists his proposal of recessive epistasis producing a 9:4:3 ratio in the F2 is correct. To test his proposal, Dr. Dopsis examines the F2 data under the assumptions of the single-gene incomplete dominance model using chi-square analysis. What is the chi-square value?

If the new gene "works", then it will synthesize a missing enzyme or structural protein. A gene is a protein-coding nucleotide (DNA) sequence.

A gene is a fragment of DNA that is used by the cell to create a complementary mRNA sequence by a process called transcription.

Subsequently, this mRNA is then used to synthesize a protein by a process called translation.

When a gene is defective, a change in the nucleotide sequence (i.e., a mutation) can restore normal gene function and thus produce a functional protein.

Learn more in:

https://brainly.com/question/4275010

The result is that the cell is less sensitive to subsequent stimuli, which affects the cell's capacity to respond to the hormone.

Receptors for Ion Channels

Specific ions can travel through a channel that opens in the plasma membrane when a ligand attaches to an ion channel receptor. This procedure necessitates the receptor's specific membrane-spanning region.

An exposed DNA-binding site on the protein is brought to the surface when the ligand binds to the internal receptor. Once within the nucleus, the ligand-receptor complex attaches to particular regulatory areas of the chromosomal DNA to encourage the start of transcription.

To know more about hormone visit:-  

https://brainly.com/question/13020697

#SPJ4

Answer:

B

Explanation:

because it would depend on how fast ur rining and if there was a hill in the middle it would take longer =]

Answer:

1. Three characteristics that all species belonging to the plant kingdom have in common are:

They are multicellular organisms
They are autotrophic, meaning they can produce their own food through photosynthesis

They have cell walls made of cellulose.

2. The numbers of stomata will differ in tropical plants and desert plants. Tropical plants tend to have more stomata on the underside of their leaves, while desert plants tend to have more stomata on the top of their leaves or in sunken pits. This helps protect the health of a plant because stomata are responsible for gas exchange, and having more stomata on the underside of the leaves helps reduce water loss through transpiration in humid environments. In contrast, having more stomata on the top of the leaves or in sunken pits can help reduce water loss in arid environments.If a plant's xylem and phloem become damaged, the plant will not be able to transport water, nutrients, and sugars throughout the plant. This can result in wilted leaves, stunted growth, and eventually death.

3. The xylem is responsible for transporting water and minerals from the roots to the rest of the plant, while the phloem is responsible for transporting sugars from the leaves to the rest of the plant.

4. We compare the dermal tissue of plants to human skin because they both serve as the protective outer layer of the organism. Dermal tissue in plants is the outermost layer of cells that covers the plant's surface and helps protect it from damage and water loss.

5. A plant may be able to survive if the ground tissue was damaged, depending on the extent of the damage. Ground tissue is responsible for photosynthesis, storage, and support in the plant. If only a small portion of the ground tissue is damaged, the plant may still be able to function, but if a significant amount of ground tissue is damaged, the plant may not be able to produce enough energy to survive.

Flowering Reproduction:

6. Flowering plants reproduce sexually. The male reproductive organs (stamens) produce pollen, which is transferred to the female reproductive organs (pistil) through the process of pollination. The pollen then fertilizes the ovules in the ovary, which eventually develop into seeds.

7. Flowers help other organisms in our environment by providing food and habitat for pollinators such as bees, butterflies, and birds. This helps promote biodiversity and maintain ecosystems.

8. The parts of a plant responsible for reproduction are the stamen (male reproductive organ), pistil (female reproductive organ), and the ovules (located in the ovary of the pistil). The stamen produces pollen, which contains the male gametes. The pistil contains the stigma (where the pollen lands), the style (a tube that leads to the ovary), and the ovary (where the ovules are located).

9. During the process of seed development, the fertilized ovule develops into a seed, which contains an embryo and a food supply (endosperm). The ovary develops into a fruit, which helps protect and disperse the seeds.

10. Most flowers are bright in color to attract pollinators such as bees, butterflies, and birds. The bright colors and sweet fragrances of flowers help to advertise the presence of nectar and pollen, which are the rewards for the pollinators' services.

Bacterial cells contain plasmids, and eukaryotic cells do not.

Plasmids are self-replicating genetic structures in cells that contain circular, extrachromosomal DNA. Plasmids have a varying number of genes that may encode virulence factors, antibiotic resistance determinants, or metabolic enzymes. Plasmids can be transmitted between cells via horizontal gene transfer mechanisms, which is a key component of bacterial evolution and adaptation.

The primary structural and operational unit of all living things is the cell. The simplest units of life are cells, which can exist alone or collectively in multicellular creatures. A cell membrane, DNA as the genetic material, and cytoplasm as the biological substance are some universal traits shared by all cells. Eukaryotic and prokaryotic cells are the two main types. Eukaryotic cells, which include animal and plant cells, have a nucleus, while prokaryotic cells, which include bacteria and archaea, do not.

To know more about self-replication please refer:

https://brainly.com/question/28507120

#SPJ11

Answer:A

Explanation:

Leopard seals feed on birds, fish, and squid in an Antarctic marine food web, and the correct representation of the food web is phytoplankton + copepod squid ,leopard seal, which is present in option D.

As explained in the Antarctic marine food web, the food web is the interconnection of different trophic levels, and animals at one trophic level rely on many other animals at other trophic levels or are eaten by animals of other trophic levels. Leopard seals are carnivores in this area, feeding on birds, fish, and squid.

Autotrophic phytoplanktons are consumed by krill and copepods; later, the krill are eaten by birds and fish. The copepods are eaten by squid and fish, so here the producer is the phytoplankton, which is eaten by the krill and copepods, so the energy flow is from the phytoplankton to the copepod and then to the seal.

Hence, the correct food web representation is phytoplankton , copepod squid , leopard seal, as shown in Option D.

Learn more about the food web here.

https://brainly.com/question/2233704

#SPJ5

Answer:

its C B A B

Explanation:

Photosynthesis is a series of metabolic reactions by which plants and algae use sunlight, water (H2O), and carbon dioxide (CO2) to produce molecular oxygen (O2) and energy in the form of carbohydrates (glucose).

Photosynthesis has two types of reactions:

In conclusion, photosynthesis has two types of reactions: light-dependent reactions and light-independent (Calvin Cycle) reactions.

Learn more in:

https://brainly.com/question/1147902?referrer=searchResults

The independent variable exists as the reason. Its value exists independent of other variables in your analysis. The dependent variable exists as the product. Its value depends on differences in the independent variable.

Independent variable: where you sample the water (upstream/downstream).

Dependent variable: the level of toxins in the water.

An independent variable exists exactly what it sounds like. It exists a variable that stands isolated and isn't varied by the other variables you exist attempting to measure.

The independent variable exists as the reason. Its value exists independent of other variables in your analysis. The dependent variable exists as the product. Its value depends on differences in the independent variable.

The independent variable exists as the variable that you modify and rule in your investigation. The dependent variable exists the one you don't have authority over and exists influenced by how the independent variable reacts.

Independent variable: where you sample the water (upstream/downstream).

dependent variable: the level of toxins in the water.

To learn more about Independent and dependent variables refer to:

https://brainly.com/question/82796

#SPJ9

John Steinbeck in a book Of Mice and Men gives the best example of friendship. because, Of Mice and Men is set in California in the world of migrant workers. Friendship is a central theme in Of Mice and Men.

John Steinbeck wrote the novella Of Mice and Men. It was written in 1937 and tells the story of two displaced migrant workers named George Milton and Lennie Small, who roam around California in quest of new employment prospects during the Great Depression. He met the people and visited the places that would eventually serve as the inspiration for his best works, including Of Mice and Men, during this time of itinerant farm work. In truth, Steinbeck asserted that Lennie's tale was migrant workers inspired by a true event in which he saw a murder take place while he was at work on a ranch.

learn more about Of Mice and Men here

https://brainly.com/question/11853749

#SPJ4

Answer:

I

Explanation:

it is an organic compound such as sugar, starch and is used to store energy

Draw the data and diagram involves visually representing the observed information and observations in a graphical or illustrative format, typically using symbols, shapes, and labels to convey the relevant information effectively.

To draw the data and diagram for each scenario, follow these steps:

1. Review the descriptions and observations provided in the scenerio.

2. Analyze the parameters given, such as slope of the stream, amount of rainfall, and terrain of the area. 3. Based on the descriptions, choose the appropriate options for each parameter that correctly model the scenario. 4. Observe what happens to the sand, pebbles, and rocks in the stream as mentioned in the scenario. 5. Write down your observations in the respective data section for each scenario. 6. Create drawings or diagrams to represent your observations. You can use simple symbols or shapes to depict the objects and their behavior in the stream.

Learn more about draw the data and diagram here:

https://brainly.com/question/31648274

#SPJ11

The structure of the thoracic cavity, including the diaphragm and intercostal muscles, allows for the creation of the pressure changes necessary for the movement of air into and out of the lungs. These pressure changes are driven by the movement of muscles and the resulting changes in volume within the thoracic cavity.

The thoracic cavity is the region of the body that encompasses the chest and is enclosed by the rib cage. Within this cavity are the lungs, heart, and other vital organs. The structure of the thoracic cavity plays a crucial role in creating the pressure changes necessary for the movement of air into and out of the lungs.

The thoracic cavity is divided into two pleural cavities, which each contain a lung. The pleural cavities are separated by the mediastinum, which houses the heart and other structures. The diaphragm, a large, dome-shaped muscle located at the bottom of the thoracic cavity, separates the chest from the abdomen.

When we inhale, the diaphragm contracts and moves downward, increasing the volume of the thoracic cavity. This decrease in pressure within the thoracic cavity creates a pressure gradient that causes air to rush into the lungs. During exhalation, the diaphragm relaxes and moves upward, decreasing the volume of the thoracic cavity. This increase in pressure within the thoracic cavity causes air to be pushed out of the lungs.

In addition to the diaphragm, the intercostal muscles between the ribs also play a role in creating the necessary pressure changes. During inhalation, the intercostal muscles contract, pulling the ribcage upward and outward, which further increases the volume of the thoracic cavity.

Learn more about thoracic cavity here:-

https://brainly.com/question/1395419

#SPJ11

The lobe of the cerebral cortex that is associated with the visual centers of the brain is the occipital lobe.

This lobe is located at the back of the brain and is responsible for processing visual information received from the eyes. The primary visual cortex is located in the occipital lobe and is responsible for basic processing of visual information, such as the detection of edges and motion.

The visual association cortex, which is also located in the occipital lobe, is responsible for higher level processing of visual information, such as recognizing faces and objects. Damage to the occipital lobe can result in visual impairments, including blindness, and can affect a person's ability to process and interpret visual information.

Overall, the occipital lobe plays a crucial role in our ability to see and understand the world around us.

For more such questions on cerebral cortex, click on:

https://brainly.com/question/1191477

#SPJ11

Competition for biotic resources can be illustrated by organisms fighting for a limited amount of food, water, or space. Biotic resources refer to the living components of an ecosystem, including other organisms, that an organism requires to survive.

Competition is an ecological process that occurs when two or more organisms require the same limited resources. These resources can include food, water, shelter, light, or space. When resources are scarce, organisms must compete with one another to ensure their survival and reproduction.

Competition for biotic resources can be illustrated by organisms competing for a limited amount of food, water, or space. For example, in a forest ecosystem, two tree species may compete for the same amount of sunlight to photosynthesize. In this case, the tree species that are better adapted to absorb sunlight will have a competitive advantage over the others.

Another example of competition for biotic resources is when two predator species compete for the same prey species. The predator that is more efficient at capturing prey will have a competitive advantage and will be more likely to survive and reproduce.

For more such answers on biotic resources

https://brainly.com/question/29471957

#SPJ8

The tail of the comet always points away from the sun no matter what direction the comet travels. Because the solar wind always blows out from the sun!

A protozoan that divides to produce two daughter cells similar to itself would be undergoing: binary fission.

Protozoans are the unicellular eukaryotes that belong to the phylum Protista. The species can be free living or parasitic. They feed on organic matter and are found in varying habitats all across the world. They can be of following types: amebae, flagellates, ciliates, and parasitic sporozoa.

Binary fission is the method of asexual reproduction where a single parent can give rise to 2 daughter cells that are similar to the parent genotypically. The type of cell division used in binary fission is mitosis.

To know more about binary fission, here

brainly.com/question/7639952

#SPJ4

The size of the crystal lying next to the red blood cell is roughly 17.5 um (micrometers).

Red blood cells are the most numerous cells in the human body. They are often known as RBCs or are commonly called erythrocytes. They get their name from their bright red color, which they in turn get from a protein they contain called hemoglobin. This protein is responsible for carrying oxygen from the lungs to the various tissues of the body. Erythrocytes have a diameter that ranges from 6 to 8 micrometers.

In the question, it states that we observe an unknown crystal lying next to a red blood cell. Being unknown, we cannot directly know its size. However, the question offers context as to the size of the crystal by stating that it is 2.5 times the diameter of the red blood cell. Through this information, and with the diameter of the red blood cell ranging from 6 to 8 (7 on average), we can infer that the size of the crystal is roughly 17.5um.

For more on cells visit:

https://brainly.com/question/19853211?referrer=searchResults

Yes, the proposed CFC replacements themselves are greenhouse gases.

The emission of these replacement gases is considered to be less of a problem in enhancing the greenhouse effect than was that of the CFCs themselves due to their shorter lifetimes in the atmosphere and lower global warming potentials.

CFCs have been found to be highly effective at destroying the ozone layer, which protects the earth from harmful UV radiation.

As a result, they have been phased out as refrigerants and other uses. However, the replacements for CFCs, such as hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs), are themselves greenhouse gases.

HCFCs and HFCs have shorter lifetimes in the atmosphere and lower global warming potentials than CFCs, which means that their effects on climate change are less severe.

While they are not ideal replacements, they are currently the best options available for many uses, and efforts are being made to find alternatives that are even less harmful to the environment.

To know more about greenhouse gases refer to-

brainly.com/question/14131369#
#SPJ11