Explain why an egg is considered to be unicelular.

Complete question:

Corvids are a large family of birds that includes many species of ravens, jays, crows, and magpies. It was recently discovered that numerous birds in this family are an important vector for the West Nile virus because infected mosquitoes may pass the virus to these birds. Not to mention other species: there are over 35 species crows across the world alone and more than 3,500 species of mosquitoes across 41 different genera. Taken together, these facts demonstrate that it is critical that global societies and scientists

A) use more detailed common names to identify species,such as the "violet crow" or the "American crow."

B) use the genus and specific epithet scientific name to identify taxa.

C) use DNA sequences when referring to a particular species.

D) track diseases like West Nile virus using remote sensing technology on birds to help predict illness spread.

E) invoke higher levels of the classification system, such as kingdom and domain, when referring to a species.

Answer:

D) track diseases like West Nile virus using remote sensing technology on birds to help predict illness spread.  

Explanation:    

The West Nile virus affects many animals, among which there are many bird species. Birds turn to be one of the most important ones, not only because the virus keeps on nature through the cycle mosquito-bird-mosquito, but also because they act as dispersal organisms that carry the virus through long distances.

Due to its mortality and the many organisms it affects, it becomes a need to track the affected birds by the West Nile virus to make prevention through predictions about the distribution area and the periods in which it is more feasible for the virus to attack. It is particularly interesting to apply these tracking technologies to birds. They are severely affected by the West Nile virus and might carry and spread it faster in broad areas due to migration.

Getting to know

are the tools that provide higher chances to avoid the fast spread of the illness.

Answer:Simple diffusion is basically the diffusion of substances through a membrane without needing the help from other substances, such as proteins. An example would be carbon dioxide gas for plants.particle or substance moves from higher to lower concentration

Tamoxifen is a hormone inhibitor that works by preventing the body from producing estrogen, a hormone that premenopausal and postmenopausal women have in their bodies.

Tamoxifen competes with other chemicals to bind to the estrogen receptor protein's active site, making it a competitive inhibitor. It thus inhibits the release of estrogen. You went on to say that the process is irreversible because when tamoxifen attaches to the receptor, the protein is irreversibly eliminated.

Tamoxifen is a member of the medication group known as selective estrogen receptor modulators. It generally works by preventing estrogen's effects on breast tissue, which can lead to breast cancer or worsen cases where cancer has already started. Tamoxifen is administered to stop the growth of cancer cells.

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Answer:

I only

Explanation:

To make a good karyotype all one needs is a photograph of the condensed chromosomes visible during metaphase of mitosis. The chromosomes are ranked according to size. It is not necessary to know the mutations or the age of the individual.

Entropy describes how the chemical world eventually becomes disorganized because Entropy is the measurement of a number of microstates that are available to a system or environment. A microstate is an arrangement and behavior of all atoms in a system, environment, or container at a specific time.

However, the more microstate will be there, the higher will be the disorganized pattern or higher will be the atomic disturbance in a system. This disturbance and disorganization are called Entropy.

Therefore, the state of Entropy will is the most probable state of the system, environment, container, or world of chemicals. The atomic disturbances will give the complete idea about the disorganization of the systems or chemical world.

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Answer:

Analgesic - pain reliever, analgesic - a drug designed to relieve pain - analgesia.

Antibiotics - Antibacterial drugs that are widely used as medications to treat infections.

Explanation:

This termines are different at all. The only same thing is that they are both drugs

a) The amoeba is an outgroup in this cladogram because it is unicellular, while all of the other organisms are multicellular.

b) The salmon has jaws, while the earthworm does not. The animal connected to the trait will have that trait, while the animal(s) to the left does not. The animal(s) to the right also do have that trait, unless it is contradictory (such as a multicellular organism being unable to be unicellular). Since the salmon is connected to the jaws trait, the animal to its left (earthworm) does not have jaws.

c) Not completely sure. Maybe limb traits developed after jaw traits? More animals have jaws than limbs?

d) Between the kangaroo and the cat. It does have hair, so it wouldn't fit to the kangaroo's left. But since the squirrel glider doesn't have a placenta, it could not be in the cat's spot or to the right of the cat. This means that it has to be between the kangaroo and the cat.

Answer:

To answer your question the most common belief of the mass extinction of the Cretaceous period was due to an asteroid impact.

Explanation:

Answer:

The 6 Main Elements are Hydrogen, oxygen, carbon, Nitrogen, calcium & phosphorus

Explanation:

99% of the atoms in the human body come from 6 elements: Hydrogen at about 63%, oxygen (around 25%), carbon (nearly 11%), nitrogen (nearly 0.7%), calcium (0.25%), phosphorus (0.15%) and Calcium which is essential for our bones, & contains 99% of the calcium in the human body

The statement that best describes the dynamics of this gut microbe after the introduction of strain a is as follows:

1. Strain A efficiently converts organic compound X into byproduct compound Y.
2. Strain B, which has a latent capacity to utilize compound Y for energy, starts to grow proportionally due to the availability of compound Y.
3. As strain B grows, it begins to form a biofilm.
4. Strain C, which depends on compound X as an energy source, experiences a decline in its relative presence in the microbiome because it cannot compete effectively with strain A for compound X.

In summary, the introduction of strain A leads to the growth of strain B and the decline of strain C in the gut microbiome due to changes in the availability and utilization of compounds X and Y.

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Answer:

Dams can be damaged and may require repair

Explanation:

This is imperative to  provide    needed supports and maintenance  for the aging dams,with capacity of up to 11,000. This dams were created as far back as 1948.Therefore the programme was geared towards effective re-habitation  for  maximum efficiency.

This repair programmes was termed Dam Rehabilitation Programme.And the secretary of Agriculture was given the authority to ensure effective execution of the programme.

In  the state of Virginia,a  total of 150 dams  were part of the government landscape through the rehabilitation programme, and 11 of these have been well studied. .Todd Lake,Robinson Hallow, Lake Barton are some of these examples.

Answer:

the answer is c

Explanation:

An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.

Angiosperms, that are also known as flowering plants, have “seeds” that are sealed off within an “ovary”, while gymnosperms do not have fruits or flowers and have uncovered seeds on the surface of leaves. Seeds of gymnosperms are often arranged as “cones”.

The features and characteristics that distinguish angiosperms from gymnosperms are fruits, flowers, and “endosperm” in the seeds. Examples of “Angiosperms” are “monocots” like orchids, lilies, agaves, grasses and dicots like, peas, roses, sunflowers, maples and oaks. “Gymnosperm” examples include “non-flowering evergreen” trees like pine, fir and spruce.

Therefore,An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.

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Answer:

They can be found in the plant cell.

Explanation:

Most plants cells have a single vacuole. If they have more than one, only one vacuole is found large,l and it is called the central vacuole.

Answer:

it's the first one :) it has linear DNA so it be easily ✂️ cut

Answer: a.) it has linear DNA so it can be easily cut open

Answer:

B

Explanation:

organisms that breed and produce fertile offspring

Answer:

B. organisms that breed and produce fertile offspring

Explanation:

Verified correct with test results.

The correct statement regarding the pH scale is it is the negative logarithm of the H⁺ ion concentration of a given solution (option i) and it is a 14-point scale (option iii). Thus, the correct option is A.

The pH scale is a 14-point scale that measures the acidity or alkalinity of a solution. It is defined as the negative logarithm of the concentration of hydrogen ions (H⁺) in the solution. A lower pH value indicates a higher concentration of hydrogen ions and a more acidic solution, while a higher pH value indicates a lower concentration of hydrogen ions and a more alkaline solution. pH is an intrinsic property, not an extrinsic property.

Thus, the correct option is A.

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Location within an enzyme where reactant(s) bind and the reaction is catalyzed is called as active site.

The active site of an enzyme is the  position within the enzyme where reactant( s) bind and the  response is catalyzed. Enzymes are proteins that act as catalysts to speed up chemical  responses. The active  point of an enzyme is a specific region of the protein that contains amino acid  remainders and is  generally located in a  split or  fund on the  face of the protein.

Each enzyme possesses a unique active  point that binds to a specific substrate or set of substrates. The active  point is  largely specific and fits the substrate like a  crucial fits a cinch. The substrate binds to the active  point and is held in place by weak  relations  similar as hydrogen bonds and ionic bonds.

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The parts of the molecule whose bond must be broken to form an ADP molecule would be between C and D. Thus, option A would be correct.

The image is an illustration of the structure of ATP, Adenosine Triphosphate. The hydrolysis of the terminal phosphoanhydridic bond in ATP yields energy for metabolic reactions in biological systems and ADP (Adenosine Diphosphate) is formed as a result.

In this case, the terminal phosphoanhydridic is D. Thus, the bond between D and C must be broken for ADP to result.

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Answer:

D.

Just makes the most sense yo

Cells need to have a high amount of surface area relative to their total volume because the volume increases instead of surface area and the efficiency of the cell decreases

A large surface area to volume ratio indicates that cell can be efficient in moving nutrients and waste material around using through the process of diffusion but when the volume increases instead of surface area the efficiency of the cell decreases and cell won't be able to do its job efficiently and smaller singled celled organism have a high surface area to volume ratio and which allow them rarely on oxygen and material diffusing into the cell and higher the surface area to volume ratio they have more the effective process

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Building block of polymers is called Monomer. A polymer is serial repitition of monomer.

a) Carbohydrates are classified as polysaccharides and monosaccharides. Polysaccharides are polymers of monosaccharides(monomer). Example - Starch is a polymer of glucose(monomer). b) Protein is a polymer of amino acid (monomer). Example - polymers is polypeptide, monomers are amino acids. c) In case of nucleic acid for example- Nucleotides are monomers (adenine, guanine, thymine, cytosine, uracil) and polymers are DNA & RNA (Nucleic acid).

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The organism isolated from the culture of Gram-positive cocci bacteria in chains which are catalase negative and resistant to optochin are: (c) Streptococcus viridians.

Gram positive bacteria are the types of bacteria which retain the color of the crystal violet stain. The cell wall of such bacteria are thick, mainly composed of peptidoglycan. Thus thick layer helps in retaining the stain.

Streptococcus viridians are streptococcal bacteria which are spherical in shape and attached to each other to form a chain. These bacteria are catalase negative which means they do not synthesize the catalase enzyme. Streptococcus yield a negative result in optochin sensitivity as well.

Therefore the correct answer is option c.

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The given question is incomplete, the complete question is:

A young boy who routinely bites his finger nails develops a wound on his right pointer finger. A culture reveals alpha hemolytic, dry colonies on the blood and CNA plates that are catalase negative, resistant to optochin, and 6.5% NaCl negative. Gram stain of the colony is Gram-positive cocci in chains. The organism most likely isolated is:

a. Enterococcus faecium

b. Enterococcus faecalis

c. Streptococcus viridians

d. Streptococcus agalactiae

Answer:

XXY, Klinefelter's syndrome

Explanation:

In humans, as well as in many mammals, biological sex is determined by a pair of sex chromosomes (X and Y) which combine to produce a female phenotype (XX) or a male phenotype (XY). In humans, the Klinefelter syndrome (KS) is a chromosomal disorder resulting from two or more X chromosomes in males. In cats, there are documented rare cases in which male cats can also inherit two X chromosomes in addition to the Y chromosome, so they are XXY instead of XY (similar to the Klinefelter syndrome in man). Also in cats, the calico-colored is a phenotype result from the inactivation of one X chromosome, which usually occurs in cat females. However, approximately one in every 3,000 male cats have the XXY condition, and these male cats may also exhibit a “calico” phenotype.

Answer:

The Mother

Explanation:

The mutation needs two x chromosomes

The γ-tubulin ring complex is to microtubules what the Arp2/3 complex is to actin filaments.

The γ-tubulin ring complex (γ-TuRC) serves as a template for the formation of microtubules, which are important components of the cytoskeleton. γ-TuRC initiates the assembly of microtubules by facilitating the addition of α- and β-tubulin heterodimers. This process is essential for various cellular processes such as cell division, intracellular transport, and maintaining cell shape.

Similarly, the Arp2/3 complex is responsible for nucleating the growth of actin filaments. Actin filaments, also known as microfilaments, are essential for cell motility, maintaining cell shape, and facilitating cellular processes like cytokinesis and endocytosis. The Arp2/3 complex binds to existing actin filaments and promotes the formation of new filaments, leading to the branching and extension of the actin network.

In summary, both the γ-tubulin ring complex and the Arp2/3 complex serve as nucleation points for the assembly of microtubules and actin filaments, respectively. These complexes are vital for the proper functioning of cells and contribute to the organization and dynamics of the cytoskeleton.

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The location of the central nerve cord in a grasshopper is along the ventral side of the body, running from the head to the tail.

The central nerve cord is a major component of the grasshopper's nervous system, responsible for transmitting signals from the brain to the rest of the body. It is made up of a series of ganglia, or clusters of nerve cells, that are connected by nerve fibers.

In grasshoppers, the central nerve cord is located along the ventral, or underside, of the body. It runs the entire length of the body, from the head to the tail. This location allows the central nerve cord to easily communicate with the various organs and muscles in the grasshopper's body, allowing it to control movement, sensory perception, and other functions.

Overall, the central nerve cord is a crucial part of the grasshopper's anatomy, playing a key role in its ability to move, sense its environment, and perform other essential functions.

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Answer:

The microorganisms utilize the carbon and nitrogen present in these materials and convert them into high-quality proteins which can be used as a supplement in both human and animal feed

Explanation:

the specialized conductive fibers located within the ventricle walls are the Purkinje fibers. These fibers are responsible for transmitting electrical impulses throughout the ventricles, allowing for coordinated contractions and efficient pumping of blood.

the Purkinje fibers are a network of specialized cardiac muscle fibers that are larger and more heavily myelinated than other cardiac muscle fibers. They are located within the walls of the ventricles, branching out from the bundle of His, and extending throughout the myocardium. When an electrical impulse reaches the Purkinje fibers, it is rapidly conducted to the rest of the ventricular myocardium, allowing for synchronized contraction.

the Purkinje fibers play a crucial role in the electrical conduction system of the heart, ensuring proper coordination of ventricular contractions and efficient pumping of blood.

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Answer:

C

Explanation:

Due to constant erosion, it will erode and collapse from which sediments form which sink into the sea or float depending on its mass

The plant could have only gained most of its weight from the water and the atmosphere within the container by photosynthesis.

The law of conservation of matter states that matter is conserved in all circumstances. They can neither be created nor destroyed but their forms can change.

With this in mind, we now know that it is not possible for the plant to have gained its weight without explanations. 1 lb plant, 10 lb soil, and 1 lb water were all sealed in a large container. The only way the plant could have gained its weight was from the soil, the water, and or the atmosphere within the container.

After a month, the weight of the soil remains 10 lb. Thus, it is now sure that the plant did not gain any of its weight from the soil. The water is now 0.5 lb. This means that the plant has gained 0.5 lb from the water while the remaining weight gained by the plant can be traced to the atmosphere within the container.

This is explainable if the plant photosynthesized while sealed in the container. During photosynthesis, the plant would have gained more matter as a result of fixing carbon dioxide in the atmophere within the container into carbonhydrate with the help of water.

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