1.During diffusion, molecules move
A) in no predictable pattern.
B) to points equidistant from the point of origin.
C) from lower concentration to higher concentration.
D) from higher concentration to lower concentration.


2.Asexual reproduction in the parent cell will result in offspring with
A) similar genetic information.
B) half the genetic information.
C) double the genetic information.
D) four times the genetic information.

The answer is Selective permeability

Answer: phagocytosis

Explanation:

The phagocytosis is a process by which the cells utilizes their plasma membrane to engulf the large particles. The phagocytosis is the part of the immune system of the organism.

The phagocytosis is shown by the white blood cells of the body that encounter the invaders in the body like bacteria, virus, and other foreign particles to engulf and destroy them.

Phagocytosis is the process where white blood cells engulf microorganisms to digest them and protect the body from invaders.

The process described in the question where certain white blood cells engulf microorganisms to digest them as a means of protecting the body from invaders is called phagocytosis. Phagocytosis is a type of endocytosis where solid particles are engulfed by the cell membrane and form a vesicle called a phagosome. Once inside the cell, the phagosome fuses with lysosomes to form a phagolysosome, where the microorganisms are digested by enzymes.

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Final answer:

The direct hemagglutination assay is a presumptive or preliminary field test for blood. It uses Coombs' reagent to cross-link antibodies bound to red blood cells and facilitate agglutination, indicating the presence of antibodies against bacteria or red blood cells.

Explanation:

A presumptive or preliminary field test for blood is the direct hemagglutination assay. In this test, Coombs' reagent is used to cross-link antibodies bound to red blood cells and facilitate hemagglutination. The presence of antibodies against bacteria or red blood cells is indicated by agglutination, which can be observed visually or using a spectrophotometer. This test is often used to determine the titer of virus in a solution.

Both plant and animal cells have ribosomes that synthesize proteins for the cell. Therefore, option B is correct.

The process of making proteins in a cell takes place at an intercellular structure called a ribosome, which is formed of both RNA and protein. The messenger RNA (mRNA) sequence is read by the ribosome, which then converts the genetic code into a specific string of amino acids that develop into extended chains and fold to create proteins.

The nucleolus is a spherical component of the cell's nucleus whose main job is to assemble and generate ribosomes. Additionally, ribosomal RNA genes are translated into the nucleolus.

plant and animal cells have ribosomes that synthesize proteins for the cell. Therefore, option B is correct.

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Answer:

7 protons and 9 neutrons

Explanation:

As we know,

Atomic number of an element is the total number of proton in its atom. Thus,

Number of proton [tex]= 7[/tex]

Mass number is equal to the sum of number of proton and number of neutron

Mass number [tex]= \\[/tex] Number of Proton [tex]+ \\[/tex] number of neutron

Putting the available values in above relation, we get -

[tex]16 = 7 +[/tex]Neutron

Neutron [tex]= 16 -7\\[/tex]

[tex]= 9\\[/tex]

Hence there are 7 protons and 9 neutrons

Igneous rocks are formed by the cooling of the magma.

Sedimentary rocks are formed by weathering and erosion of igneous rocks and then consolidation of the sediments.

Metamorphic rocks are formed when igneous or sedimentary rocks are subjected to heat and pressure.

The metamorphic rocks melts and forms magma which in turn cools down to form igneous rocks.

Similarly, sedimentary rocks melt down and forms magma which cools down to form igneous rocks.

So, the igneous rock is formed by cooling of magma, which is in turn formed from sedimentary and metamorphic rocks.

Of the given options only one option has the resulting rock as igneous.  

Hence the answer is

sedimentary rock to igneous rock

DNA is made up of sugars, phospate groups, and nitrogenous bases and its shape is a double helix. The complementary structure the two strands of DNA allow each strand to serve as a template during replication.

All the different plant populations make up the plant community in this swamp. Plants are part of the bigger ecosystem, that contains many biotic and abiotic factors. Thus, option B is correct.

The community has been part of the biosphere that is defined by the population of various species inhabiting together at a place. The community only consists of biotic factors like living organisms of different species.

Ecosystems, on the other hand, are part of the biosphere that consists of the geographic area including animals and plants of various populations along with the food, water, air, trees, energy cycles, and other non-living factors. They are composed of biotic and abiotic factors.

Therefore, option B. community and ecosystem are correct blanks.

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1) The nail root is not visible on the body surface when using a hand magnifier. The visible parts include the nail body and free edge.

The portion of the nail plate that is not visible on the body surface when using a hand magnifier is the nail root. The nail root is the part of the nail plate that is embedded under the skin at the base of the nail, beneath the cuticle. The visible parts of the nail when using a hand magnifier are the nail body and the free edge.

complete question:

What portion of the nail plate is not visible on the body surface when using a hand magnifier?  

Answer: Emptying an aquarium containing non-native species into a local waterway.

Emptying an aquarium containing non-native species into a local waterway will most likely to cause the greatest disruption to an ecosystem. A non-native species can be invasive and may disturb the already living native species in the waterway. The non-native species will compete with the native species for food, mates and habitat and can cause decrease in abundance and death of native species. Hence, it will disturb the ecosystem of the local waterway.  

The correct term is parasitism. That is option B.

Malaria is a type of disease that is usually caused by the bite of a female anopheles mosquito.

The insect transmits protozoan called plasmodium, which completes its cycle in the living human host with the display of the following symptoms:

Since the protozoan that causes malaria is very harmful and often kills its host, it has a parasitic feeding relationship with the host.

Parasitism is a mode of nutrition where an organism lives on or in another organism known as host, causing harm or death to the host.

Therefore the correct term is parasitism.

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Answer:

Its B Paraitisim

Explanation: Glad to help :)

Deficits in visual-spatial skills and fluent language skills are found in Williams syndrome.

Williams syndrome is a rare genetic disorder that leads to intellectual disability and poor visuospatial abilities. Individuals with Williams syndrome often have relatively strong verbal abilities but struggle significantly with tasks that require visual and spatial skills.

Williams syndrome is caused by the deletion of a small number of genes from chromosome 7. The condition affects many parts of the body, leading to mild to moderate intellectual disability, unique personality traits, distinctive facial features, and cardiovascular issues.

Answer:

The Kastle- Meyer and Luminol tests are presumptive tests for the identification of blood. The Kestle- Meyer test utilizes the phenophthalein solution and hydrogen perioxide as reagents which reacts with the hemoglobin pigment of the blood. The phenophthalien is colourless dye but in the presence of hemoglobin it gives of pink color. The pink color indicates the presence of blood. The Luminol is the reagent that gives of green fluorescence in the presence of blood also the hydrogen perioxide is used as an oxidizing agent of the reaction. These ingredients also reacts with the hemoglobin component of the blood to give off green fluorescence.

The hemoglobin component of the blood causes a positive reaction in the  Kastle-Meyer test and the Luminol test.

Individual prokaryotic cells are 0.1 to 5.0 µm in diameter, much smaller than eukaryotic cells, which are 10 to 100 µm. The small size of prokaryotes aids in fast diffusion of substances, unlike in larger eukaryotic cells.

Prokaryotic cells are much smaller than eukaryotic cells. They have diameters ranging from 0.1 to 5.0 μm, while eukaryotic cells have diameters ranging from 10 to 100 μm. This means that individual prokaryotic cells are about 10 to 20 times smaller than eukaryotic cells.

Individual prokaryotic cells are significantly smaller than eukaryotic cells. Specifically, prokaryotic cells measure at 0.1 to 5.0 µm in diameter, whereas eukaryotic cells range from 10 to 100 µm. The smaller size of prokaryotes makes them efficient in diffusing ions and organic molecules throughout the cell, as well as in the diffusion of waste products out of the cell. In contrast, eukaryotic cells, due to their larger size, have developed different structural adaptations to facilitate intracellular transport and accommodate their complexity.

Answer:it will drecrease

Explanation:

The first organic compound is Carbohydrates. Most organisms use is as a primary fuel or their main energy source. They make up cell structures, and they're also used as stored energy in plants. Second is Lipids. If we have any other energy left over in our bodies, we typically will store that as lipids, which a lot of people think of as fats. It also makes up the cell membrane, and coats the leaves of plants to make them waterproof and also protect them from the elements. Third type are proteins. One use of proteins are chemical messengers or hormones. Proteins are useful for receptors and transport channels in order to help things move in and out of the cell. They also help to control and regulate chemical reactions. Another use is for cell structures, like your hair. the last one is for immunity. The fourth and last is Nucleic Acids. There are two main uses in organisms for nucleic acids. The first one is for protein synthesis. The other use is for our hereditary information or how we pass our traits to our offspring.

structures built to protect beaches

the answer for grad-point

Final answer:

Breakwaters, sea walls, and groins are 'hard' coastal engineering structures that protect the coast and manage sediment movement, with breakwaters acting as barriers against waves, and groins trapping sand to prevent erosion from longshore drift.

Explanation:

Breakwaters, sea walls, and groins are all examples of structures designed to protect the coast or control sediment movement. Breakwaters are often constructed parallel to the shore and are similar to natural barrier islands in that they protect the shoreline from aggressive wave action. They can cause sediment to accumulate behind them, leading to changes in the coastline. Groins, on the other hand, are built perpendicular to the shore and extend out from the beach, primarily aimed at preventing longshore drift from eroding the beach by trapping sand. Additionally, these structures can be grouped as 'hard' coastal engineering measures because they are inflexible structures that interact with coastal processes to reduce erosion, control sediment transport, and sometimes support navigation and coastal development.

Pesticides that inhibit acetylcholinesterase cause accumulation of acetylcholine, leading to sustained muscle contractions or spasms, and can ultimately result in paralysis and life-threatening conditions.

If a pesticide that inhibits acetylcholinesterase was present at the motor end plate, it would prevent the breakdown of the neurotransmitter acetylcholine (ACh) in the synapse. Acetylcholinesterase is the enzyme responsible for hydrolyzing ACh, which terminates the signal for muscle contraction. When acetylcholinesterase's action is blocked, ACh accumulates in the synapse, leading to prolonged engagement with the ACh receptors on the muscle cell surface. This results in sustained muscle contraction or spasms, and can eventually cause muscle paralysis. An example of a compound that has this effect is Sarin nerve gas, which is a potent acetylcholinesterase inhibitor. In serious cases, the accumulation of ACh can lead to paralysis and potentially be life-threatening due to the inability of the muscles to relax, which could impair vital functions like breathing.

Horses and donkeys are not the same species as their hybrids, like mules and hinnies, are sterile, which fits the reproductive isolation criterion of the biological species concept.

Horses and donkeys are not members of the same species according to reproductive isolation. When these two different species mate, their offspring, such as mules and hinnies, are typically sterile and cannot reproduce to have further offspring. This sterility illustrates that horses and donkeys have different sets of chromosomes that do not pair correctly during meiosis, preventing the production of fertile gametes in their hybrid offspring.

While horses and donkeys may share certain morphological similarities, these do not imply that they are of the same species. In fact, morphology alone can be misleading since certain traits can evolve independently across different evolutionary branches for similar ecological reasons.

Therefore, the correct statement is: No, according to reproductive isolation, horses and donkeys are not members of the same species.