Even when asymptomatic, _______ can still be actively multiplying and killing cells in the immune system that help fight pathogens.

Answer:

A= stabilising selection, B= directional selection

Explanation:

A:

stabilising selection is any type of force that pushes the population towards a mean trait .

B:

Directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favoured over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype. So imagine in your graph for be there are two different phenotypes, this type of selections drives the preference of phenotype in one direction so you end up with more individuals with that specific phenotype.

Answer:

Our sun oriented framework shaped almost 4.5 billion a long time back from a thick cloud of interstellar gas and tidy. The cloud collapsed, conceivably due to the shockwave of a adjacent detonating star, called a supernova. When this tidy cloud collapsed, it shaped a sun oriented nebula—a turning, twirling disk of fabric.

The best interpretation of the observations made during the investigation are ;

Although your question lacks some data a general answer within the scope of your question

Plasmolysis is the state of losing water to the surrounding environment by a cell when the cell is placed inside a hypertonic solution while Turgidity is the inflow of water molecules into a cell when the cell is placed inside a hypotonic solution.  

The hypertonic solution in the experiment is the salt water solution therefore the mass of the cell placed in it will be reduced due to the lose of water from the cell into the salt solution and the hypotonic solution is the distilled water solution.

Hence we can conclude that the best interpretation of the observations made during the investigation are The gummy bear placed inside the distilled water undergoes Turgidity while The gummy bear placed inside the salt water undergoes Plasmolysis.

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The now discredited idea about how traits are acquired by individuals through use or disuse and could be passed on to their offspring, leading to evolutionary change in the population, is called Lamarckism.

Lamarckism was proposed by Jean-Baptiste Lamarck in the early 19th century as an alternative to Charles Darwin's theory of natural selection. According to Lamarck, an organism could acquire new traits or modify existing ones during its lifetime in response to environmental changes or demands. Lamarck suggested that these acquired traits could then be passed on to subsequent generations, resulting in evolutionary change.

However, this idea contradicts our current understanding of genetics and inheritance. We now know that heritable traits are primarily determined by genetic information encoded in DNA, which is passed down from parents to offspring through mechanisms like Mendelian inheritance and DNA replication. The concept of acquired traits being inherited, as proposed by Lamarckism, has been discredited by modern genetics and is not supported by empirical evidence.

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Answer:

Hello! How r u?

Explanation:

a virus is a submicroscopic infectious agent that replicates ONLY inside the living cells of an organism. In my opinion I would say no, only because it can duplicate itself once it has become the host of the living organism and make them sick, and will soon be contagious doesn't mean it's an living thing.

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Answer:

Viruses are not living things.

Explanation :

Viruses are made with molecules (complex assemblies) but they are dependant on the living being whom they are entering. They can't multiply themselves without cells. Therefore, viruses are not living things.

When creating the phylogeny of land plants, the root of the phylogenetic tree was typically established using a group of green algae known as the Charophytes.

The root of the phylogenetic tree represents the common ancestor of all the species being studied. In the case of land plants, scientists have identified a group of green algae called Charophytes as the closest living relatives to land plants. Charophytes are a diverse group of freshwater and terrestrial green algae that share several characteristics with land plants.

Land plants, or embryophytes, evolved from ancestral charophytes and share various features, including the presence of cellulose cell walls, the ability to produce starch, and similar chloroplast structures. These shared characteristics suggest a close evolutionary relationship between land plants and Charophytes. By using Charophytes as the root of the phylogenetic tree, researchers can trace the evolutionary history of land plants and study the diversification of different plant groups over time.

It's important to note that phylogenetic analyses are continually being refined and updated as new scientific evidence and advancements in molecular techniques emerge. However, as of the current knowledge cutoff in September 2021, Charophytes are widely recognized as the closest living relatives to land plants and are commonly used as the root of the phylogenetic tree for land plant evolution.

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Answer:

Marsh

Explanation:

The name of some enzymes that use in industries are Proteinase, and  Lipases.

Proteinases:

Lipases:

Therefore, the name of some enzymes that use in industries are Proteinase, and  Lipases.

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option C virus

All the prokaryotes have a cell structure that includes nucleus, Golgi apparatus and ribosomes. prokaryotes survive in nature on their own or inside the body of the host. Viruses, on the other hand, lacks cellular structure and only consists of the genetic material which is multiplied by using host cell machinery

During latency, viruses remain dormant in animal cells.

Latency is a state in the viral life cycle where the virus establishes a dormant or latent infection within host cells. In this state, the virus remains inactive and does not actively replicate or cause symptoms. The viral genome becomes integrated into the host cell's DNA or remains as an episome, allowing it to persist within the host cell without being detected by the immune system or causing harm.

Latency is commonly observed in certain types of viruses, such as herpesviruses (e.g., herpes simplex virus, varicella-zoster virus) and retroviruses (e.g., human immunodeficiency virus, HIV). During latency, the viral genes may be selectively expressed or repressed, depending on various factors, including host immune responses or specific triggers.

The latent phase can be long-lasting, with the virus residing in specific cells or tissues of the host. Under certain conditions, such as immunosuppression or specific stimuli, the virus may reactivate, leading to viral replication, shedding, and the potential recurrence of symptoms or disease. Latency plays a crucial role in the persistence and transmission of certain viral infections.

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During viral latency, viruses remain dormant in animal cells without causing disease.

During certain periods, viruses can enter a state of dormancy within animal cells. This process is known as viral latency. Viral latency occurs when a virus infects a host cell but does not immediately replicate and cause disease. Instead, the viral genetic material integrates into the host cell's DNA and remains inactive.

The virus can persist in this latent state for an extended period, during which it does not produce new viral particles or cause symptoms. This dormancy allows the virus to evade the immune system and remain undetected. However, under certain conditions, such as stress or a weakened immune system, the virus can reactivate and resume its replication cycle, leading to the onset of disease.

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It is important for patients to get regular check-ups with their doctor in order to monitor their thyroid levels and ensure that their treatment is effective.

1. Fatigue: Patients with hypothyroidism often experience fatigue as a result of their thyroid not producing enough hormones. This can cause them to feel tired and have difficulty concentrating.

2. Weight gain: Because their metabolism is slowed, patients with hypothyroidism may have difficulty losing weight even when they are eating a healthy diet and exercising regularly.

3. Feeling cold: Patients with hypothyroidism may feel unusually cold, even in warm temperatures. This is due to their body’s decreased metabolic rate, which causes it to burn fewer calories and produce less heat.

In addition to these three symptoms, patients with hypothyroidism may also experience other symptoms such as constipation, dry skin, depression, and muscle aches. It is important for patients to get regular check-ups with their doctor in order to monitor their thyroid levels and ensure that their treatment is effective.

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When a publication describes an enzyme from Candidatus Pseudomonas utahensis, it suggests that this organism is a potential member of the Pseudomonas genus, specifically found in Utah, but has not been officially classified as a fully named species.

In scientific literature, the term "Candidatus" is used to designate organisms that have not been formally described and named as recognized species. When an enzyme is attributed to Candidatus Pseudomonas utahensis, it indicates that the organism belongs to the Pseudomonas genus and is likely a candidate species or a candidate for classification as a new species. The inclusion of "utahensis" suggests that the organism was found in Utah. However, until it undergoes further taxonomic evaluation and formal classification, it remains as a Candidatus species.

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Answer:

a sickle cell is a group of inherited red blood cell disorders

Explanation:

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Answer: The energy from the sun is the only source of energy which has the ability to sustain life on earth.

The energy pyramid states that the transfer of energy is unidirectional and it flows from the producers to the consumers.

There are different trophic levels at which the organism are found say herbivores, carnivores and top predators.

All of the organism are dependent on the producers for their source of energy.

hence, the sunlight helps autotrophs to make food and herbivores feed on them and then the carnivores animals feed on herbivores and then the top predators feed on the carnivores animals.

So, ultimate source of energy on earth is sun, which directly or indirectly provides energy to the producers and other animals.

To hold 1 mole of the E. coli chromosome, you would need a container with a volume of approximately 1.1 x 10^7 cubic micrometers.

The E. coli chromosome is a circular DNA molecule that is approximately 4.6 million base pairs long. Each base pair has a length of about 0.34 nanometers. To calculate the volume of the chromosome, we can multiply the length of the chromosome by the cross-sectional area. The cross-sectional area can be approximated as a circle with a radius of half the length of the chromosome.

Therefore, the volume of the chromosome is approximately (4.6 x 10^6) x (0.34 x 10^-9)^2 x π x (0.5 x 4.6 x 10^6) cubic nanometers. Converting this volume to cubic micrometers, we get approximately 1.1 x 10^7 cubic micrometers. So, a container with a volume of approximately 1.1 x 10^7 cubic micrometers would be needed to hold 1 mole of the E. coli chromosome.

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The leaves of the coriander plant are better known as cilantro in the U.S.
Cilantro is a commonly used herb in many different types of cuisine.

It is often used as a garnish or ingredient in Mexican, Thai, and Indian dishes, among others.

The coriander plant is a versatile herb that is used in many different parts of the world. In the U.S., however, the leaves of the coriander plant are better known as cilantro. This herb is commonly used in Mexican cuisine, where it is often added to salsa, guacamole, and other dishes for its fresh, citrusy flavor. It is also a popular ingredient in Thai and Indian cuisine, where it is used to add depth and complexity to curries and other dishes.

Cilantro is a very fragrant herb, and its leaves have a distinctive aroma and flavor. Some people love cilantro, while others find it overpowering or unpleasant. This may be due to genetic differences that affect how individuals perceive the herb.

Despite its polarizing flavor, cilantro is a valuable ingredient in many different types of cuisine. It is also a good source of vitamins and minerals, including vitamin C, vitamin K, and potassium. If you're not a fan of cilantro, there are many other herbs that can be used in its place, such as parsley, mint, or basil.

The leaves of the coriander plant are known as cilantro in the U.S., and this fragrant herb is a common ingredient in many different types of cuisine. Whether you love it or hate it, there's no denying that cilantro adds a unique flavor and aroma to dishes that is hard to replicate with other herbs.

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Damage to the prefrontal cortex produces symptoms similar to Korsakoff's syndrome.

The prefrontal cortex, located in the front of the brain, is one of the most important areas of the brain for executive function. The prefrontal cortex plays a significant role in many of the brain's higher-order processes, including decision-making, goal-setting, and personality development. It is thought to play a crucial role in the cognitive and behavioral responses to stress, as well as a person's overall emotional state. Lesions or damage to the prefrontal cortex, such as those caused by traumatic brain injury, can cause a range of cognitive, behavioral, and personality changes, including symptoms similar to Korsakoff's syndrome.

In summary, damage to the prefrontal cortex produces symptoms similar to Korsakoff's syndrome.

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A nerve cell is long and skinny. At the start of the nerve, there are many branches that connect the nerve to other nerve cells. These branches are known as dendrites.

A nerve cell or a neuron is a basic unit of communication in the nervous system of our body. The major function of the nerve cell is to transfer electrical impulses throughout the body by establishing communication with other cells through specialized connections known as synapses.

The nerve cell consists of a cell body, the main branching fiber which is known as axon and a number of small branching fibers which are known as dendrites. These dendrites connect nerves to the other nerve cells.

Therefore, a nerve cell is long and skinny. At the start of the nerve, there are many branches that connect the nerve to other nerve cells. These branches are known as dendrites.

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Answer:

Anaphase

Explanation:

each chromosome is composed of two chromatids

Answer:

Throughout inter phase, nuclear DNA remains in a semi-condensed chromatin configuration. In the S phase (synthesis phase), DNA replication results in the formation of two identical copies of each chromosome-sister chromatids- that are firmly attached at the centromere region.

Explanation:

The cilia present in rotifer's have two main functions.First it helps in locomotion and the second function is it helps in the movement of food particles towards mouth.

Cilia present in rotifer are small hair like structure present outside of eukaryotic cells.

They are responsible for locomotion,either of the cell itself or of liquids present on cell surface.

Other function of cilia in rotifer  is to move water relative to the cell in a regular movement of the cilia.

Cilia are distinguished into two types:

1) Motile cilia

2)Non motile cilia

Two types of cilia are distinguished on the basis of microtubules present in the axonemes of their body.

Therefore, the main function of rotifer's cilia is to help in locomotion and and to move food particles towards the mouth.

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In the equation 6x - 2 = -4x + 2, Jeremiah is correct in his claim that the first step is to subtract 6x from both sides.

To solve the equation, the goal is to isolate the variable 'x' on one side of the equation. To do this, we need to eliminate the x-terms on one side.

If Spencer were to add 4x to both sides, the equation would become:

6x - 2 + 4x = -4x + 2 + 4x

Combining like terms, we would have:

10x - 2 = 2

However, subtracting 6x from both sides, as Jeremiah suggests, would give us:

6x - 6x - 2 = -4x - 6x + 2

To simplify, we have:

-2 = -10x + 2

Now, we can proceed with solving the equation by manipulating and simplifying further. But in terms of the first step, Jeremiah's approach of subtracting 6x from both sides is the correct choice to eliminate the x-terms on one side of the equation.

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Answer:The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.

Explanation:please give braineest

Answer:

A nerve is formed by a bundle of many neurons. Neurons develop from the neural tube of the early embryo and in many animals continue development until sometime after birth. The development of motor neurons that have elongated axons is best understood. These cells are derived from tissue on the ventral side of the neural tube.

Explanation:

i found it on bing for you can you answer my newest qu plz i really need help

Muscle and nerve tissues enable animals to move. The more advanced the muscular and nervous systems, the more complex the movements.

Evolution is a change in the body structure of living things that takes place slowly over a very long time. Evolution comes from the Latin word Evolvo which means stretching. Evolution in the study of biology means changes in the inherited characteristics of a population of organisms from one generation to the next.

Animals themselves experience the lowest level of development and form like creatures, ranging from viruses, bacteria, protozoa, worms, and fish to mammals. Evolution is still ongoing. Even faster process than in ancient times. Evolution as a gradual and gradual change is divided into several types, namely geological evolution, astronomical evolution, biological evolution, and cultural evolution.

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Answer:

Explanation:

These are terms specify the position of anatomical structures. They are used to establish a relationship of space or distance between one element and another one. These terms are useful when locating anatomical parts or making comparisons, taking as reference the location of another.

Anterior/ Posterior and Dorsal/Ventral are delimitated with an imaginary linear line that divides the body into two parts.

In the exposed example, we might first compare the dorsal and the ventral part of the orca´s body.

So the A label is pointing to the dorsal side of the orca. And the C label is pointing to the ventral side.  

The B label is pointing to the anterior end, while the D label is pointing to the posterior end.

So take a look at the attached file. You will find every step with the regions and the named structures for a better understanding  

Answer:

C.

Explanation:

Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted. The dog is likely to be overweight if the environmental factors are not changed.

The Mountains of Kohala and Mauna Kea are located on the Big Island of Hawaii and have different rainfall patterns due to their geographic location and topography.

Kohala is located on the northern part of the island and is the oldest volcano in the Big Island, shielded from the prevailing trade winds by the taller volcanoes of Mauna Kea and Mauna Loa.

The moisture carried by the trade winds falls on the eastern side, and much less falls on the western side. Kohala, being located on the leeward side, receives less rainfall and is drier than the windward side.

Mauna Kea is located to the south of Kohala. It is also located on the windward side of the island. Therefore, it receives more rainfall due to the moisture carried by the trade winds. As the air rises over the mountain, it results in more precipitation on the windward side.

Therefore, the rainfall pattern is different on the Mountains of Kohala and Mauna Kea due to their location relative to the trade winds and the topography of the island.

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Answer:

A. necklace

Explanation:

Necklace  is most likely made from both metals and gemstones.

A necklace might be a straightforward chain made of gold or silver, a string of beads or diamonds, or a pendant suspended from a rope. It qualifies as a necklace as long as it is worn around the neck.

Unless you are a professional or amateur geologist—or perhaps you earned a merit badge studying them as a scout—you probably won't be able to explain the differences between these four hard natural materials: minerals, rocks, gemstones, and crystals.

The different types of necklace are chocker, Matinee and opera. Long and functional, opera length necklaces. The necklace should hang below the bust when worn as a single strand.

Therefore, Necklace  is most likely made from both metals and gemstones.

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Answer:

The shell

Explanation:

The shell helps protect the internal body parts