Characters that are similar because of descent from a common ancestor are characters that are similar due to convergent evolution are a. homologous; analogous b. analogous; homologous

in my own opinion I think it's false ..,

Natural selection refers to any process of selection that occurs as a result of an organism's ability to adapt to its environment. Artificial selection, on the other hand, is selective breeding imposed by an external entity, typically humans, to increase the frequency of desirable characteristics.

Natural selection has an impact on a species' entire population. Artificial selection has no effect on the individuals who are chosen. Natural selection produces a great deal of biological diversity. Artificial selection only produces desirable changes and traits while decreasing genetic diversity.

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Answer:

Their organs will smash into their ribcage

Explanation:

Answer:

they would be sent forward/ whatever direction the tarin was going.

Explanation:

let's say the train is moving 20 mph

Therefore everyone/ everything in the train is also moving 20 mph. If the train just went to 0 mph. everyone would still be going 20 mph.

This cell is undergoing telophase as the cell is easily visible under with two cells. When the stage of meiosis is taking place the cell then it divides into two daughter cells with half of the chromosomes.

Reductional division is the type of division that is present in meiosis that is the chromosomes number gets halved. In meiosis it is clearly evidently seen to view the 2 daughter cells.

The 4 phases of cell division are as following where :

1. Prophase – The chromosomes shorten,  and thicken.

2. Metaphase – Chromosomes line up,  in the middle of the cell.

3. Anaphase – Chromatids break apart at the centromere and move to opposite poles.

4.,Telophase – Two nuclei formed,  after nuclear envelopes reform around each group of chromosomes.

Here the cell is given with the individual DNA, cell bodies and nucleus in each of the cells present.

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The digestive process is divided into four steps: ingestion, chemical and mechanical food breakdown, nutrient absorption, and expulsion of indigestible food.

What does the digestive process entail?

The digestive process starts as soon as something is chewed. In order for food to pass more easily through your esophagus and into your stomach, saliva, a digestive juice produced by your salivary glands, moistens the food. The carbs in food also begin to be broken down by an enzyme found in saliva.

Motility, digestion, absorption, and secretion are the four fundamental functions of the digestive system. Our digestive system transforms our food into energy that we can use.

The digestive system's initial function is to take in food through the mouth. The "ingesting" procedure must take place before anything else can happen.

The complete question is:

Some students were building a model of a digestive system. Which choice best describes a process they should show with their model?

a) F Tissues digest food for the organ system to absorb.

b) G Cells digest food, which is then absorbed by organs.

c) Organs digest food by working together as a system.

d) The organ system uses specialized cells to digest food.

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Answer:

geosphere,biosphere,cryosphere,hydrosphere,and atmossphere

The blood-brain barrier functions to regulate the movement of materials from the blood to the brain (option A).

The blood-brain barrier is a structure in the central nervous system (CNS) that keeps various substances found in the bloodstream out of the brain while allowing in the substances essential to metabolic function, e.g. oxygen.

The blood-brain barrier serves as a protective barrier for the brain that prevents the entry of substances in the bloodstream that can cause brain damage.

Therefore, the blood-brain barrier functions to regulate the movement of materials from the blood to the brain.

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Answer:

It keeps their glucose levels balanced

Explanation:

The average glucose levels in the blood of these patients is abnormal, therefore they need the insulin to keep it normal.

Answer:

It keeps their glucose levels balanced

Explanation:

Answer:

When plants and animals die, they become food for decomposers like bacteria, fungi and earthworms

Explanation:

Yan lang po ang alam ko

Answer:

It sometimes calms the animal. For example some farmers give horses, chamomile to calm down the horse and to reduce inflammation in the animal.

Bread mold tends to grow on the top layer of bread rather than the lower layer due to the following factors:

1) Exposure to air: The top layer of the bread is exposed to the surrounding air, providing a suitable environment for mold spores to settle and germinate. Mold spores are ubiquitous in the environment and can easily land on the bread's surface. The presence of oxygen in the air further supports the growth of mold.

2) Moisture and humidity: Moisture plays a crucial role in mold growth. The top layer of the bread is more exposed to air circulation, which allows moisture to evaporate faster compared to the lower layer. This relatively drier environment on the lower layer creates unfavorable conditions for mold spores to germinate and thrive.

3) Nutrient availability: Mold requires nutrients to grow, and bread provides a suitable source of carbohydrates. As the bread's moisture evaporates from the top layer, it concentrates the nutrients in that region, making it more favorable for mold growth.

4) Temperature: Mold thrives in temperatures that are within a certain range. The top layer of bread, being closer to the air, is more likely to experience temperature fluctuations, which can promote mold growth.

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The epitope recognized by the monoclonal antibody is specific to g-actin and not present on f-actin. This suggests that the antibody recognizes a unique structural feature or conformational difference between g-actin and f-actin.

A monoclonal antibody binds to g‑actin but not to f‑actin. An epitope, also known as an antigenic determinant, is a specific portion of a antigen molecule that is recognized and specifically bound by an antibody or T cell receptor. The epitope can be a linear sequence of amino acids or a three-dimensional structure on a protein or other large molecule. The recognition of epitopes is a crucial step in the immune response, as it allows the immune system to specifically target and neutralize pathogens or foreign substances. by this we can see that the antibody recognizes a unique structural feature or conformational difference between g-actin and f-actin.

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Answer:

Wave movement started to move the oil around in the water mixing it a little bit, but not very much. Wave movement also brought the oil near the shorelines. This could affect organisms that live around the shoreline because many organisms will catch hypothermia and most likely die if not treated.

Explanation:

Answer:

Most ecologists believe that we are in the midst of the sixth mass extinction. Humanity’s impact on nature, they say, is now comparable to the five previous catastrophic events over the past 600 million years, during which up to 95 percent of the planet’s species disappeared. We may very well be. But recent studies have cited extinction rates that are extremely fuzzy and vary wildly.

Explanation:

Answer:

I have attached a sketch that make your idea clear

Explanation:

One main thing is that bacteria is the lowest one but it mostly fall into the category of heterotrophs but few are autotrophs also. That is the reason they are not producers. Algae are always producers. A few algae have been reported that sometime feed on bacteria in hunger.

The term "bite-wing" refers to a type of X-ray imaging technique used in dentistry.

This technique involves positioning a dental X-ray receptor between the patient's upper and lower teeth.

The patient is then asked to bite down gently on the receptor to hold it in place, creating a “bite-wing” image of the teeth and surrounding structures.

The size of the receptor recommended for use with the bite-wing technique in adult patients is generally a size 0. The size 0 receptor is slightly larger than the size 1, but slightly smaller than the size 2. This size is used as it provides adequate coverage of the area while still allowing the patient to bite down on the receptor comfortably.

To achieve an optimal bite-wing X-ray, the patient should be instructed to keep the molars in occlusion and not move the jaw.

The technician should also ensure that the receptor is placed in the correct position and at the correct angle. The X-ray source should then be centered to the receptor, and an exposure should be taken from each side of the mouth. This will allow for the most comprehensive view of the area.

The bite-wing technique is a very useful imaging method that is used to diagnose and monitor a variety of oral health conditions.

It is particularly useful for assessing the presence of periodontal disease, caries, and various types of dental restorations. This technique is non-invasive, comfortable for the patient, and cost-effective, making it an ideal imaging method for use in the dental practice.

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Answer:

DNA sequencing – to identify bacteria, moulds and yeasts. Riboprinter analysis – for bacterial identification and characterisation. Repeat–based polymerase chain reaction – for assessing the similarity of microorganisms. Rapid pathogen confirmation by polymerase chain reaction.

Explanation:

I hope it's help u

Answer:

flies offer an important food source to birds, fish frogs and spiders. Rats distribute seeds and are a food source to hawks, wolves foxes and bobcats.

Explanation:

Autosomal dominant traits are coded by the dominant allele of genes located in autosomal chromosomes. E) 75% of the offspring could have Huntington's chorea.

Autosomal dominant traits are features coded by genes located in autosomal chromosomes (not sexual), meaning they are not sex-linked.

In these cases, the dominant allele is the one coding for the trait, while the recessive allele codes for another one. Homozygous dominant and heterozygous individuals can express the trait.

In the exposed example, the dominant allele is the one coding for Huntington's chorea, while the recessive allele codes for the normal phenotype.

Cross: heterozygous male with a heterozygous female

Parentals)  Hh   x   Hh

Gametes) H   h     H    h

Punnett square)   H      h

                      H   HH   Hh

                       h   Hh    hh

F1) Genotype

    Phenotype

The correct option is E) 75% of the offspring could have Huntington's chorea

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Answer:

an organelle is any of a number of organized or specialized structures within a living cell. I think cells have organelles because organelles are found in virtually all eukaryotic cells. They carry out essential functions that are necessary for the survival of cells – harvesting energy, making new proteins, getting rid of waste and so on.

Explanation:

Answer:

Is one half the original DNA and one half new DNA with the same code as the original strand preserved

Explanation:

I am assuming the process is DNA replication.

The process of DNA replication:

step 1- the DNA double helix unwinds using an enzyme called dna helicase. Proteins hold the strands apart from each other forming a Y shape called the replication fork.

step 2- At the replication fork, enzymes called DNA polymerase move along each of the DNA strands adding complementary bases to the nitrogen bases using base pairing rules.

step 3- DNA polymerases add nucleotides to a growing double helix until all the DNA is copied

result- 2 new DNA molecules, each made of one original strand and one copied strand

Trichromatic color vision is the ability to perceive colors using three types of cone cells in the retina. These cone cells are sensitive to different wavelengths of light and allow us to see a wide range of colors.

The genes responsible for trichromatic color vision are called opsin genes. There are three types of opsin genes that code for the three different cone cells in the retina: red, green, and blue. These genes are located on the X chromosome, which means that females have two copies of each gene, while males only have one copy. Mutations in these genes can result in color vision deficiencies, such as red-green color blindness. The presence of all three types of cone cells allows for trichromatic color vision, which is the most common form of color vision in humans and many other primates.

In summary, the three opsin genes are essential for trichromatic color vision and allow us to see the vibrant and diverse world of colors around us.

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Answer:

80N

Explanation:

in both sides, pressure is the alwyays the same whatever the area is..

First we calculate the pressure at piston A:

P= F÷a

given that,

#F= 20N

#a=1m^2

P= 20÷1

P= 20 Pa.

At piston B:

pressure is the same = 20Pa

Area= 4m^2

P=F/a

F= P×a

F= 20 × 4

F= 80N

Bones will usually heal after they have been severely damaged so long as the cellular components of the endosteum and periosteum survive and there is an ossification center.

An ossification center is the starting site for cartilage ossification. The cartilage cells at this stage grow and arrange themselves in rows, which is the first stage of ossification. The first region of a bone to begin ossifying is called the main ossification center. In the middle of each growing bone during fetal development, it typically manifests. While the major centers of irregular bones typically occur in the body of the bone, they typically occur in the diaphysis/shaft of long bones.

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Answer:

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The estimated total population of brown rats in the area is 500 rats.

To estimate the total population of brown rats in the area, we can use the Lincoln-Petersen index. According to the Lincoln-Petersen index, the estimated population size is calculated using the formula:

Estimated population size = (Number of tagged individuals in first sample * Total number of individuals in second sample) / Number of tagged individuals in second sample

In this case, the technician tagged 25 brown rats initially and then captured 100 brown rats in the second sample, of which 5 had ear tags. Plugging these values into the formula:

Estimated population size = (25 * 100) / 5 = 500

It is important to note that this is an estimation and assumes that the population is closed (no birth, death, or migration) and that the tagging and recapturing process is random and representative of the entire population.

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