Naturally occurring substances that protect against chronic diseases are called __________.
a. free radicals
b. phytochemicals
c. enzymes
d. carotenoids

Answer:

The major structural advantage of eukaryotes over prokaryotes is the ability to form advanced, multicellular organisms.

Explanation:

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Answer:

There would be minor changes in the planets' orbits about the Sun, but very little else. However, Jupiter does a great job of shepherding and absorbing small objects in the Solar System. With Jupiter gone, the main effect on Earth would be an increase in the rate of impacts from asteroids and other space flotsam.

Explanation:

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Corynebacterium diphtheria is the causative microorganism for bacterial infection of mucous membrane in the client.

Mucous membrane is the inner moist lining of body organs such as lungs, stomach or mouth. It provides lubricative care to the organs or glands and also has enzymes and WBC (white blood cells) which fights against any invasive pathogen.

Corynebacterium diphtheria is a disease causing bacterial strain which produces abrasive toxins that can cause difficult breathing, improper heart functioning and in some cases even death. Its symptoms are fever, swelling, lesions, problematic swallowing of food etc. Use of appropriate antibiotics under the prescription of doctor can help in timely cure of the disease. One must also take timely vaccination as a preventive cure for the body.

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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:

Ribosomes make protein

Answer:

True. Vestiges are simply structures that don't really serve a purpose but are leftovers from ancestors.

The exception among the given options is C. Interphase, as it is not a stage of nuclear division but rather a preparatory stage in the cell cycle.

Interphase is not a stage of nuclear division. It is a stage in the cell cycle where the cell prepares for division by growing and replicating its DNA.During interphase, the cell undergoes three subphases: G1 (Gap 1), S (DNA synthesis), and G2 (Gap 2). These subphases are characterized by various cellular activities such as protein synthesis, organelle replication, and cell growth. Interphase is a crucial stage for the cell to ensure it has enough resources and genetic material before entering nuclear division.On the other hand, the remaining options (A. Anaphase, B. Prophase, D. Telophase, and E. Metaphase) are all stages of nuclear division, specifically mitosis or meiosis, depending on the context. During mitosis, which occurs in somatic cells, the nucleus divides into two identical daughter nuclei. Meiosis, which occurs in reproductive cells, involves two rounds of division, resulting in the production of four non-identical daughter cells.

The exception among the given options is C. Interphase, as it is not a stage of nuclear division but rather a preparatory stage in the cell cycle.

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Answer:

The mRNA specifies, in triplet code, the amino acid sequence of proteins; the code is then ... The genetic code is identical in prokaryotes and eukaryotes, and the process of ... and other enzymes that make copies of DNA during cell division, are all proteins. ... The ribosomal subunits contain proteins and specialized RNA ...

Explanation:

The radiant energy was absorbed by the wax coating on the plant is determined as 92.4 J.

The heat absorbed by the wax is determined as follows;

Q = mcΔT

where;

Q = 0.0055 x 2400 x (22 - 15)

Q = 92.4 J

Thus, the radiant energy was absorbed by the wax coating on the plant is determined as 92.4 J.

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Answer: How might it be possible for you to show a trait when neither of your parents show the same trait. It can be carried to you when the chromosomes combine even if the parents don't possess the same trait  It can skip and be dominant for you so you would be able to see it in your genetic make up.

Explanation:

Cut floral materials benefit from floral preservatives that lower the water Ph.

What are the benefits of floral preservatives?

Therefore, floral preservatives lower the water Ph.

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Residual volume is known to be the amount of air remaining after exhalation. So the correct option is a.

The human lung has an average of 480 million alveoli located at the end of the bronchi. When you inhale, the air sacs in your lungs expand to take in oxygen. When you exhale, the alveoli contract to expel carbon dioxide.

Although small, the alveoli are central to gas exchange in the respiratory system. The alveoli take in the energy (oxygen) that comes in through respiration and release the waste products (carbon dioxide) that you exhale.

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Answer: Donates hydrogen ions to the solution

Explanation: According to Bronsted and Lowry, acids are the species that dissociate in water to give hydrogen ions.

Whereas bases are the species that dissociate into water to give hydroxide ions.

Also, like dissolves like. So, when an acid is polar in nature and dissolved in water then it will completely dissociate into ions.

As a result, it will tend to donate hydrogen ions into the solution.

For example, HCl ->H^+ +Cl

Thus, we can conclude that an acid is a polar substance that dissolves in water and donates hydrogen ions to the solution.

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Answer:

short sightedness

Explanation:

images are formed before the retina

Answer:

True

Explanation:

Conclusions made from scientific research or understanding can always be challenged by anyone with new ways of observing and with different interpretations. This is the essence of the repeatability or reproducibility of scientific experiments.

Scientific research must be reproducible and if the earlier conclusions or understanding is found to be somehow inadequate with overwhelming evidence, they are modified or even changed completely in order to accommodate new facts.

Hence, the emergence of new ways of observing different interpretations can lead to new/different conclusions from the same research. If the new conclusions gain enough evidence, it becomes the new theory.

In circumstances where the CO2 and H+ concentrations are high, the affinity of hemoglobin for O2 is decreased. When CO2 concentrations are low, the affinity of hemoglobin for O2 is increased. This is known as the Bohr effect.

Modular organisms are likely to be more successful in the long term than unitary organisms because they are more adaptable to change.

Modular organisms are typically composed of a large number of small, specialized units (called modules) that can function independently of each other. This allows them to be much more flexible and adaptable than unitary organisms, which are typically composed of a single, large, undifferentiated unit.

For example, if a modular organism loses one of its modules, it can often compensate by reallocating resources to the remaining modules. In contrast, a unitary organism that loses a part of its body is often unable to compensate and may die as a result.

In addition, modular organisms can often more easily exploit new resources and environments because they can simply add new modules to their existing structure. For example, a modular robot could easily be equipped with new tools or sensors to allow it to operate in a new environment. In contrast, a unitary organism would likely need to undergo a major evolutionary change in order to be able to exploit a new resource or habitat.

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(A) Agriculture impacts land, water, biodiversity, and climate. (B) Crop production challenges: limited land, climate change, water scarcity, soil degradation, pests. (C) Endangered species: small populations, habitat loss, declining trend, vulnerable, ecologically important.

A. Agriculture has several environmental impacts, including:

1. Land degradation: Intensive agricultural practices such as deforestation, excessive irrigation, and heavy use of agrochemicals can lead to soil erosion, loss of soil fertility, and degradation of ecosystems.

2. Water pollution: Runoff from agricultural fields containing fertilizers, pesticides, and animal waste can contaminate water bodies, leading to eutrophication, algal blooms, and water quality deterioration.

3. Biodiversity loss: Conversion of natural habitats into farmland reduces habitat availability for wildlife, leading to the loss of plant and animal species. Pesticides and herbicides used in agriculture can also harm beneficial organisms, impacting biodiversity.

4. Greenhouse gas emissions: Agricultural activities, including livestock production and rice cultivation, contribute to greenhouse gas emissions such as methane and nitrous oxide, which contribute to climate change.

5. Water scarcity: Agriculture is a major consumer of freshwater resources. Excessive water extraction for irrigation can deplete water sources, causing water scarcity and ecological disruptions.

B. Challenges of producing more crops include:

1. Limited land availability: The expansion of agricultural land is limited, and competing land uses like urbanization and industrialization reduce available arable land.

2. Climate change: Changing weather patterns, increased frequency of extreme events, and rising temperatures pose challenges for crop production, affecting yields, water availability, and pest and disease prevalence.

3. Water scarcity: Many regions face water scarcity, limiting irrigation for crop production. Efficient water management practices and drought-resistant crops are needed.

4. Soil degradation: Overuse, improper irrigation, and erosion lead to soil degradation, reducing its fertility and productivity. Soil conservation practices are necessary to maintain soil health.

5. Pest and disease management: Pests, diseases, and invasive species can significantly impact crop yields. Developing resistant crop varieties and implementing integrated pest management strategies are essential.

C. Characteristics of endangered species include:

1. Small population size: Endangered species often have small populations that make them more vulnerable to extinction due to genetic and demographic factors.

2. Restricted range or habitat loss: Endangered species may have a limited geographic range, making them susceptible to habitat loss, fragmentation, or degradation.

3. Declining population trend: Endangered species typically exhibit a declining population trend over time, indicating their risk of extinction.

4. Vulnerability to threats: Endangered species are more susceptible to various threats such as habitat destruction, pollution, climate change, poaching, and invasive species.

5. Ecological significance: Endangered species often play crucial roles in ecosystems, such as being keystone species or indicators of ecosystem health, and their decline can have cascading effects on other species and ecosystem processes.

Protecting and conserving endangered species is crucial to maintain biodiversity, ecosystem stability, and overall ecological balance.

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Complete question :

A. What are the environmental impacts of agriculture? elaborate your answer ?

B. What are the challenges of producing more crops? elaborate your answer?

C. What are characteristic of endangered species ?

Answer:

Evaporation- Water moves from liquid in lakes and oceans to gas in atmosphere

Condensation- Water moves from gas to the atmosphere into liquid in clouds

Precipitation- Water falls back to earth in liquid form (Not just liquid though- Rain, freezing rain, hail, snow,)  

Explanation:

When the number of firms in an oligopolistic industry increases from 3 to 10, it becomes more difficult for these firms to collude. Collusion occurs when firms agree to act together to limit competition and increase profits.

In general, collusion refers to an agreement or cooperation between firms in an industry to restrict competition, often by fixing prices, limiting production, or dividing markets. Oligopoly is a market structure where a small number of firms dominate the market and may engage in strategic interactions with each other.

The behavior of firms in an oligopolistic industry can vary widely, depending on factors such as market concentration, entry barriers, and competitive dynamics.

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Answer:

I think the answer is going to be A. I'm not completly sure.

Explanation:

The statements mentioned are invalid and have no argumentive point.

Let A = "the patient has high blood pressure", B = "the patient has diabetes", and C = "the patient has high cholesterol". Then the argument can be rewritten as:

A ∨ B

B ∨ C

∴ ∨ C

This argument is invalid. An example is given below to understand in a clear way:

Suppose A is true (the patient has high blood pressure) and B and C are both false (the patient does not have diabetes or high cholesterol). Then both premises are true, but the conclusion is false.

Therefore, the argument is invalid.

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You must measure the trait of your first-generation plants. To measure the trait of your first-generation plants, you will need to observe and record their physical characteristics, such as height, color, shape, and any other visible traits that may have been inherited from their parent plants.

To measure the trait of your first-generation plants, follow these steps:

1. Identify the specific trait you want to measure in the plants, such as height, leaf size, or flower color.
2. Collect a sample of first-generation plants, making sure they are all at the same growth stage for accurate comparison.
3. Use appropriate tools and methods to measure the trait. For example, use a ruler to measure plant height or a color chart for flower color.
4. Record the measurements for each plant, labeling them as "first-generation plants" and noting the specific trait being measured.
5. Analyze the data to determine any patterns, averages, or variations in the trait among the first-generation plants.

By following these steps, you can effectively measure the trait of your first-generation plants and gain valuable insights into their characteristics.

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Answer:

Owls

Explanation:

Owls are secondary consumers and since energy decrease from the producers to the tertiary consumers and from the options given there tertiary consumer so the higher other consumer is the secondary consumer which is the owls.

High frequency sounds (above 200 Hz) are encoded by phase locking.

Phase locking refers to the synchronization of the firing patterns of auditory nerve fibers with the incoming sound wave. When a high-frequency sound wave reaches the cochlea, the auditory nerve fibers fire action potentials in synchrony with the peaks or troughs of the sound wave. This synchronization allows the brain to detect and interpret the frequency of the sound accurately. Phase locking is particularly effective for encoding high-frequency sounds due to the rapid firing rates of auditory nerve fibers. In contrast, for lower frequency sounds, the tonotopic map (tonotopy) plays a more significant role, where different regions of the cochlea are sensitive to different frequencies and provide a spatial representation of sound frequency.

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Answer:

A type of ecological succession in which plants and animals recolonize a habitat after a major disturbance

Is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat.

Include areas which have been cleared of existing vegetation (such as after tree-felling in a woodland) and destructive events such as fires.

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Fall and spring turnover of many lakes in temperate environments is important for mixing nutrients from bottom waters back into the lake. The correct option is C.

Turnover in lakes refers to the mixing of the different layers of water in the lake, and it occurs in the fall and spring as a result of changes in water temperature.

Mixing nutrients from the bottom waters back into the lake is important because it redistributes nutrients that have accumulated in the bottom sediments back into the water column, where they can be utilized by phytoplankton and other organisms in the food chain. This is essential for maintaining the overall productivity of the lake ecosystem.

The correct option is C.

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Answer:

cbca

Explanation: