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Viruses are composed of genetic material surrounded by a capsid made of proteins. D. a drug that damages capsids can help in the treatment of a viral infection because capsids provide protection for viruses.

The virus structure includes genetic material (DNA or RNA) inside a proteic protector layer known as the capsid.

The capsid structure might vary among viruses. It is composed of proteins that are codified by the viral genes in the viral genome.

Basically, the virus structure is always genetic material (DNI or RNA) surrounded or protected by proteins.

The correct option is D. Capsids provide protection for viruses.

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Complete question:

Why would a drug that damages capsids help treat a viral infection?

A. Capsids prevent the lytic cycle from beginning.

B. Transduction requires a capsid.

C. Viruses use capsids to increase genetic variation.

D. Capsids provide protection for viruses.

Answer:B the age did get older

Answer:

B. The population got a bit older

Explanation:

In the chart the median age is getting older over time

At prophase I of meiosis, homologous chromosomes pair up to form bivalents or tetrads, which later separate during meiosis I and meiosis II, resulting in the production of haploid cells with half the number of chromosomes as the original cell. In mitosis, the number of chromosomes is not reduced, and the cell divides into two daughter cells with the same number of chromosomes as the parent cell.

1. At metaphase I, the homologous chromosomes are lined up at the equator of the cell, ready to separate. Since each bivalent consists of two homologous chromosomes, we can assume that there are 60 chromosomes (30 x 2) in the cell at metaphase I.

2. Each chromosome is composed of two sister chromatids that are joined at the centromere. Therefore, at metaphase I, there are 120 chromatids (2 x 60 chromosomes) in the cell, or 2 chromatids per chromosome.

3. At telophase II, the chromosomes have separated into two sets of sister chromatids, and the cell is ready to divide. Since there are four haploid cells produced at the end of meiosis, each with half the number of chromosomes as the original cell, we can assume that there are 30 chromosomes in each cell at telophase II.

4. At telophase II, each chromosome consists of a single chromatid, since the sister chromatids have separated. Therefore, there are 30 chromatids in each cell at telophase II.

5. In mitosis, the number of chromosomes is not reduced, and the cell divides into two daughter cells with the same number of chromosomes as the parent cell. Therefore, assuming the cow has a diploid number of 60 chromosomes, we can expect to find 60 chromosomes at mitotic metaphase.

6. In mitosis, each chromosome consists of two sister chromatids joined at the centromere. Therefore, there are 120 chromatids (2 x 60 chromosomes) in the cell at mitotic metaphase, or 2 chromatids per chromosome.

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Answer:

A:

ATP

Explanation:

Science yeah

Answer:

When microorganisms release carbon dioxide into the soil, the acidity of water surrounding soil particles is increased. This increase in acidity allows for rock present in soil to be broken down, releasing minerals into the soil. These minerals are then available for use by plant life.

Chemical signals called cytokines to induce bone stem cells to differentiate into osteoclasts illustrating how an autocrine signal functions in the human body.

Cytokines are small peptides with cell signaling functions. Cytokines may be involved in autocrine, paracrine, and endocrine signaling. In this question, we analyze cytokines’ role by their signaling types.

Types of signaling can be different and depend on where they’re released

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Answer:

The shoulder and hip joints are similar because they are both: ball-and-socket joints. The coxal joint is an articulation formed by: the head of the femur and the acetabulum.

Explanation:

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Answer:

The correct answer is: C. Active Transport.

Explanation:

Because Na+ and K+ are ions, which makes them charged molecules, they can only diffuse through the cell membrane when using specialized protein channels. This is called facilitated diffusion and is a form of passive transport because sodium and potassium move following their gradients, which are made of the difference in concentration between the inside of the cell and the outside of the cell. For example, potassium is highly concentrated inside the cell and poorly concentrated outside the cell, so potassium diffuses from the inside to the outside to even the concentrations.

But the question asks in which process Na+ and K+ move in and out of the cell SIMULTANEOUSLY, so the answer is actually active transport. Active transport is the opposite of passive transport. While passive transport occurs naturally and doesn't need ATP (energy) to happen, active transport needs ATP because it moves molecules AGAINST their gradient. One of the most famous and important structures involved in active transport is the Na+/K+ pump, which consists of a specialized protein using energy to enter 2 potassium ions and take out 3 sodium ions at the same time. This Na+/K+ is fundamental to maintain the gradients, which are important for the correct functioning of many cells.

Answer:

D) red and white blood cells

The parietal and visceral pericardiums are separated by the pericardial cavity. Serous fluid lubricates the visceral and parietal membranes in this space.

outline the visceral pericardium ?

The pericardium, also known as the pericardial sac, is a double-walled sac that houses the heart as well as the roots of the major arteries.  It is composed of two layers: an exterior layer of fibrous pericardium and an interior layer of serous membrane (serous pericardium). It defines the middle mediastinum and encloses the pericardial cavity, which contains pericardial fluid. It shields the heart from other structures' interference, protects it from infection and harsh damage, and lubricates the heart's motions.

The pericardium is a tough fibroelastic sac that surrounds the heart on all sides except the bottom and the cardiac root (where the great vessels join the heart). The fibrous pericardium is semi-rigid, but the serous pericardium is very malleable.

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Answer:

Is : small rocks with open cracks. clay with small cracks.

Explanation:

A virus is a small infectious agent that consists of genetic material (DNA or RNA) surrounded by a protein coat called a capsid. Some viruses also have an outer envelope made of lipids.

Answer: There is an extra Nitrogen in Alanine. We also see that Deoxyribose has many more Carbon, Hydrogen, and Oxygen atoms

Explanation:

Well, both are AMINO ACIDS

Deoxyribose is: C₅H₁₀O₄

Alanine is: C₃H₇NO₂

If we see and look at the chemical formulas, we see that there is a lone Nitrogen in Alanine that isn't in Deoxyribose.

And the chemical equations also state that Deoxyribose has so many more atoms than Alanine.

If two plant species with different numbers of chromosomes interbreed, the outcome for the hybrid offspring will depend on the compatibility of their chromosomes.

One possible outcome is that the hybrid offspring will be unable to reproduce sexually at first. This can occur if the chromosomes from the different parental species are not able to pair up and separate properly during meiosis, which is the process of cell division that leads to the production of gametes (reproductive cells). Without proper chromosome pairing and separation, the hybrid offspring may not be able to produce viable gametes, making sexual reproduction difficult or impossible.
Another possibility is that the hybrid offspring will be capable of breeding with one of the parental species but not the other. This can happen if the chromosomes from one parental species are more compatible with the hybrid offspring than the chromosomes from the other parental species. In this case, the hybrid offspring may be able to produce viable gametes with one parental species but not with the other, leading to limited reproductive compatibility.
It is also possible that the hybrid offspring will immediately be a new species. This can occur if the combination of chromosomes from the two parental species results in a hybrid with a distinct set of characteristics and traits. If the hybrid offspring can successfully reproduce and establish a stable population, it may eventually be considered a new species.
Therefore, the correct answer is "none of the above," as the outcome will depend on the specific genetic interactions between the two plant species. The result could be any of the mentioned possibilities or something else entirely.

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The observation which we get from the three bean seed experiment is that for germination to take place, oxygen, water and temperature are necessary in equal proportion.

The purpose of this study is to show that seeds require equal amounts of oxygen, water, and temperature.

A glass slide, a beaker, a thread, and bean seeds make up the apparatus.

Use a glass slide to bind three ripe bean seeds in three distinct places. Place the slide in the water-filled beaker with the top seed above the water, the middle seed at water level, and the third seed submerged in the water.

Observation: Because the top seed receives oxygen but not water, it does not germinate. As it receives both oxygen and water, the center seed begins to sprout. The seeds at the bottom do not germinate, but they do display the appearance of a little radical as a result of a small amount of dissolved oxygen in the water.

Therefore, a seed requires water, oxygen and temperature in equal proportion.

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The senior citizens who live alone in the community and are away from their children and grandchildren feel socially isolated and lonely.

Their children and grandchildren are too busy in their lives and they do not have enough time to meet their parents or grandparents so they meet less frequently which is why these senior citizens feel separated from their own families and have become lonely.

Studies show that loneliness and social isolation impede good health—leading to increased risk of high blood pressure ( hypertension), heart disease (heart disease), obesity (obesity), weakened immune system (immune deficiency), depression (depression), Alzheimer’s (Alzheimer’s disease), and even mortality (autism). The elderly people can get rid of loneliness by making a good and friendly relationships with the other community members and by getting involved in some group activities.

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Answer:

Certain prokaryotes, algae, slime molds, water molds, and fungi also have cell walls. Bacterial cell walls are characterized by the presence of peptidoglycan, whereas those of Archaea characteristically lack this chemical.

Explanation:

Examples of organisms with cell walls are plants, fungi, protists (particularly molds and algae), and most bacteria (few exceptions are mycoplasma and L-form bacteria) have cell walls. Animals and heterotrophic protists do not have cell walls.

The fossil evidence provides a evolutionary relationship between the catarhines.

Fossils are remains of dead plants and animals that have been preserved from the past and which provides information about life in the past.

Catarhines are monkeys known as Old World anthropoids or Old World monkeys.

Catarhines includes:

The fossil evidence provides a linkage between the catarhines.

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When myosin heads form cross-bridges during muscle contractions, they bind to binding sites found on actin, a component of thin filaments.

Thick myosin filaments and thin actin filaments slide past one another as the muscle contracts. Cross-bridges that are extended from the myosin filaments carry out the process. The sarcomere is referred to as the contractile unit of muscle. Actin filaments are connected to the Z disc at the end of the sarcomere. The sliding filament subsequently pulls the Z disc, even more, shortening the sarcomere and causing the muscle to contract. The connection of myosin and actin within the muscle cell is referred to as a cross-bridge. In muscle fibers, cross bridges are created by the binding of a myosin head group to an actin filament.

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Answer:

the answer is b

Explanation:

Answer:

Deoxyribonucleic acid is the full form of DNA.

The two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).

In conclusion, the two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).

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The parathyroid glands that are likely to be in the wrong position or ectopic  position are known as inferior glands. The inferior parathyroid glands are present posterior to the inferior pole of the thyroid glands.

The inferior parathyroid glands associate functionally with the the thymus, and the thyroid gland. These parathyroid glands are also known as variably positioned parathyroid glands. These glands also attribute to the laryngeal nerve function, and the parathyroid gland relationship.

Hence, based on the given statements , it can be pointed out that the parathyroid glands likely to present in the ectopic or wrong position is inferior glands.

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Answer:

4. digestive (mucous) epithelium

1. lamina propria

6. muscularis mucosae

3. submucosa

2. muscularis externa

5. serosa

Explanation:

The first layer of the digestive tract, starting from the lumen, is the epithelium. This has different characteristics depending on the digestive tract section. Then there is a loose connective tissue called lamina propria. Next, there is a layer of muscle called muscularis mucosae. It is only present in the digestive mucosae. The next layer is the submucosa, which has dense connective tissue and the submucosal plexus. Then it follows the muscular externa, which has muscle, and it is in all the digestive tract except for the esophagus and stomach. Lastly, we have the serosa layer.

Answer: Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.