what did charles Darwin and Alfred wallace propose

Answer:

True.

Explanation:

As we know, the plasma membrane of the cells is semi-impermeable, that is, it only allows the passage of some molecules in sizes and specific burning nature. Although the Na + and Cl- molecules are very small, they are polar, electrically charged molecules. These molecules are not well seen by the membrane, which does not allow them to pass into the intracellular medium.

The maximum number of grams of DDT that can be produced is 968.23 g. The percent yield is 56.43%.

To determine the maximum number of grams of DDT that can be produced, we need to set up a balanced chemical equation and calculate the stoichiometry of the reaction. The balanced equation is:

2C6H5Cl + C2HOCl3 → C14H2Cl5 + H2O

From the equation, we can see that the stoichiometric ratio between chlorobenzene (C6H5Cl) and DDT (C14H2Cl5) is 2:1. Therefore, for every 2 moles of chlorobenzene, we can produce 1 mole of DDT.

We are given 1175 g of chlorobenzene (C6H5Cl). To calculate the maximum grams of DDT that can be produced, we need to convert the given mass of chlorobenzene to moles and then use the stoichiometric ratio to find the moles of DDT. Finally, we convert the moles of DDT to grams using the molar mass.

Moles of chlorobenzene = 1175 g / (molar mass of chlorobenzene)

Moles of DDT = (2/1) * Moles of chlorobenzene

Maximum grams of DDT = Moles of DDT * (molar mass of DDT)

Calculating these values gives us the maximum grams of DDT that can be produced as 968.23 g.

The actual yield of DDT is given as 546 g. To calculate the percent yield, we use the formula:

Percent yield = (actual yield / theoretical yield) * 100

Substituting the values, we get:

Percent yield = (546 g / 968.23 g) * 100 = 56.43%

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Answer:

Soil texture is an important soil characteristic that influences stormwater infiltration rates. The textural class of a soil is determined by the percentage of sand, silt, and clay. Soils can be classified as one of four major textural classes: (1) sands; (2) silts; (3) loams; and (4) clays.

Without sufficient vitamin e, red blood cells in infants can rupture due to a condition called hemolytic anemia the infant can become anemic.

Anemia refers to a group of conditions and diseases in which the red blood cells are unable to transport sufficient oxygen to all body cells in order to perform cellular respiration, which is a severe problem because when can not metabolize foods.

Therefore, with this data, we can see that anemia is due to the lack of oxygen and damage in red blood cells, which is associated with the hemolysis of these cells.

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Tuberculosis is caused by Mycobacterium tuberculosis, a bacterium that has been responsible for millions of deaths worldwide. In the small mining community of Marikane, the presence of antibiotic-resistant tuberculosis has been detected among mine workers.

Genomics can play a crucial role in discovering the source of antibiotic resistance in these bacteria. By sequencing the genome of the resistant bacteria and comparing it with that of the non-resistant strains, researchers can identify the specific genetic mutations responsible for the resistance. This information can be used to design new drugs that are effective against resistant strains.

If there is a suspicion that the M. tuberculosis strain in the community has acquired new virulence factors, genomic sequencing can also help in determining if this is the case. By comparing the genome of the virulent strain with that of a non-virulent strain, researchers can identify the genetic changes responsible for the increased virulence. This information can be used to design new drugs that target specific virulence factors and reduce the spread of the disease.

In summary, genomics can play a critical role in identifying the source of antibiotic resistance and virulence factors in M. tuberculosis strains. This information can be used to develop new drugs that are effective against these resistant strains and reduce the burden of tuberculosis in affected communities.

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Answer:

The cerebral cortex, i.e. the external part of the brain with its grooves and folds, plays a major role in our consciousness. ... Therefore, this region of the brain appears to play a role in deciding which impressions reach our consciousness. Thus the content of consciousness is based in two different brain regions.

Explanation:

The cerebral cortex, i.e. the external part of the brain with its grooves and folds, plays a major role in our consciousness. ... Therefore, this region of the brain appears to play a role in deciding which impressions reach our consciousness. Thus the content of consciousness is based in two different brain regions.

Answer:

Cognitive functions are heavily dependent on our cerebral cortex, which is composed of a number of grooved and folded areas of the brain. Accordingly, this part of the brain may be involved in the selection of impressions that reach our consciousness. Consciousness is therefore reliant on two separate brain regions.

Explanation:

Answer:

Humans

Explanation:

Because humans have nerve cells in them and not many things have this except  for animals

Answer:

humans

Explanation:

Because humans have nerve cells and no other thing does except animals

Answer:

replication bubble

; replication fork

Explanation:

In a long DNA molecule, each origin of replication produces a replication bubble with a replication fork on each side

i hope this helps

Answer:

D. Each with one new strand and one original strand.

Explanation:

When DNA is uncoiled and strands are cut. Then new strands are formed. Each original strand give rise to complementary new strand.

probably not, it misht be a satelite, and it burns when it enter in our atmosphere

Answer:

no it was most likely a meteor because meteors burn quick in the atmosphere

Explanation:

Answer:

a

Explanation:

Answer:

"Reproduction" is a characteristic of life that enables the continuation of a species

Explanation:

I hope it helped

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The transmitted floral stimulus originating in leaves is referred to as florigen.

Florigen is a plant hormone that is produced in the leaves of a plant in response to various environmental and internal cues, such as changes in day length or temperature. Once produced, florigen is transported to the shoot apical meristem, where it promotes the transition from vegetative growth to reproductive growth, ultimately resulting in the formation of flowers. While the precise chemical identity of florigen is still not fully understood, recent research has suggested that it may be a protein or a small RNA molecule.

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Answer:

Type o is the most possible

Explanation:

Let's use a punnet square. A and B are dominate, while O is recessive. If one parent has A and the other O, then most likely the blood type is O. But since both are o, then it's only possible for O.

Sorry if it is incorrect, I am only 4th grade :(

Mycorrhizae are mutualistic relationships between soil fungi and plants: Plants are benefitted by increased mineral uptake while fungi are benefitted by receiving carbohydrates from plants. The correct option is d.

Mycorrhizae represent mutualistic relationships between soil fungi and plants. In this symbiotic association, both the fungi and plants benefit from the interaction.

Plants receive benefits from mycorrhizae in the form of increased mineral uptake. The fungal hyphae extend into the soil, effectively expanding the surface area for nutrient absorption. This allows plants to access nutrients, such as phosphorus and nitrogen, that may be limited in the soil. In return, plants provide carbohydrates, such as sugars, to the fungi through photosynthesis. These carbohydrates serve as an energy source for the fungi.

Regarding the other options, option a is a partial explanation that mycorrhizae are found mostly in soil because they colonize the area around plant roots. Option b provides information about the fungi involved, mentioning the phyla Glomeromycota and sac fungi, which are common groups associated with mycorrhizal associations. Option c starts a statement but lacks a complete explanation.

Overall, option d captures the essence of the mutualistic relationship between plants and mycorrhizal fungi by highlighting the reciprocal benefits exchanged between the two partners. The correct option is d.

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Complete question:

Mycorrhizae are mutualistic relationships between soil fungi and plants.

a. Because mycorrhizae colonize the area around plant roots, they are found mostly in soil.

b. The fungi involved typically belong to the phyla Glomeromycota or are sac fungi.

c. Because mycorrhizae are a part of a mutualistic relationship,

d. plants are benefitted by increased mineral uptake while fungi are benefitted by receiving carbohydrates from plants.

The evolution of conducting tubes (sieve tubes) in land plants and aquatic brown algae is an example of convergent evolution. Convergent evolution refers to the process where similar traits or adaptations evolve independently in unrelated organisms to perform similar functions.


Conducting tubes, also known as sieve tubes, are specialized structures that transport nutrients and water throughout the plant. In both land plants and aquatic brown algae, the evolution of sieve tubes enables efficient long-distance transport of resources.

Despite the differences in their evolutionary histories and environments, land plants and aquatic brown algae have independently evolved similar adaptations to overcome the challenges of nutrient and water transport. This is a result of the selective pressures they face in their respective habitats.

In land plants, the evolution of conducting tubes occurred during the transition from water to land. This adaptation allowed them to efficiently transport water and nutrients from the roots to the aerial parts of the plant.

Similarly, aquatic brown algae, which live in marine environments, also possess sieve tubes to facilitate the transport of nutrients and water throughout their structures.

In summary, the evolution of conducting tubes (sieve tubes) in both land plants and aquatic brown algae is an example of convergent evolution, where unrelated organisms develop similar adaptations to perform similar functions. This adaptation enables efficient nutrient and water transport in these diverse organisms.

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Answer:

The organism would not grow.

If an organism were cut or burned, the damaged area would not heal.

The organism would not produce new cells.

Explanation:

Answer:

B-The organism would not grow.

C-If an organism were cut or burned, the damaged area would not heal.

D-The organism would not produce new cells.

Explanation:

i just did it

Answer:b maybe

Explanation:

Answer:

the atp molecule

Explanation:

lol i just copied the other person i need points to ask a math question

ATP is a great energy storage molecule due to the phosphate groups that link through phosphodiester bonds. Adenosine triphosphate is an organic compound that provides energy to drive such as muscle contraction, nerve impulse propagation and chemical synthesis.

ATP can be used to store energy for future reactions when energy is required by the cell. Animals store the energy as ATP that is obtained from the breakdown of food. Plants store the energy they derive during photosynthesis in ATP molecules.

The most abundant energy carrier molecule in cell is adenosine 5'-triphosphate. This molecule is made up of a nitrogen base, a ribose sugar, and three phosphate groups.

Energy from cellular respiration is stored in the bond between the 2nd and 3rd phosphate groups of ATP. When cell requires energy to do work, ATP loses 3rd phosphate group, releasing energy in the bond.

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Answer:

Wastes and now the remains largely of dead organic matter would accumulate, and the nutrients in the waste and dead organisms would not be released back into the environment. The producers would not have had enough nutrients.

The most likely explanation is that the dead remains of plants and animals have undergone decomposition by decomposers, such as bacteria, fungi, and other organisms, breaking down organic matter into simpler compounds and recycling nutrients back into the ecosystem.

In nature, dead organisms and organic materials are typically decomposed by a process called decomposition. Decomposers, which include bacteria, fungi, and other organisms, play a crucial role in breaking down dead plant and animal matter into simpler compounds. These decomposers feed on the organic material, breaking it down through chemical processes and releasing nutrients back into the environment.

Decomposition is a natural and essential part of nutrient cycling in ecosystems. When organisms die, decomposers quickly begin the process of breaking down the organic matter. They secrete enzymes that break down complex organic compounds into smaller molecules that they can absorb as nutrients. As decomposition progresses, the organic matter is further broken down into simpler compounds like carbon dioxide, water, and various nutrients.

The nutrients released during decomposition, such as nitrogen, phosphorus, and other essential elements, become available for uptake by plants and other organisms. This nutrient recycling is vital for the growth and survival of living organisms, as it ensures the continual availability of essential resources in the ecosystem.

Therefore, in the scenario you described, where there are no visible dead remains of plants and animals, the most plausible explanation is that the dead materials have undergone decomposition by decomposers. These decomposers efficiently break down the organic matter, recycling the nutrients and ensuring a clean and clear environment. Without decomposition, the accumulation of dead remains would lead to an unhealthy and unsustainable environment.

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Answer:

A

Explanation:

Crick and Brenner performed experiments on the genetic code and introduced deletions of 1, 2, or 3 nucleotides in a gene. When they introduced 2 deletions, the observed result was Option 2. The genetic message shifted and all of the amino acids in the protein (before and after the deletion) were altered.

Crick and Brenner’s experiment aimed to demonstrate the triplet nature of the genetic code.

They used mutants of the bacteriophage T4 that had small alterations in their genes and studied how the mutations affected the proteins produced from those genes.

They added or deleted nucleotides from specific positions in the gene and evaluated the effect of these changes on the structure and function of the resulting protein.

During the experiment, when they introduced two deletions, the genetic message shifted, and all of the amino acids in the protein before and after the deletion were altered.

As a result, the altered sequence of the genetic message leads to an entirely different protein sequence, which results in changes in the properties and function of the protein.

Therefore, the observed result when Crick and Brenner introduced two deletions in the genetic message was that Option 2. the genetic message shifted, and all of the amino acids in the protein before and after the deletion were altered.

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Answer: C. flpid

Explanation:

Answer:

Its Genetics

Explanation:

Botany is the study of plants

paleontology is the study of extinct living things

archeology is the digging of cultural object, jewelry and etc.....

Four individual muscles make up the quads in the anterior femoral region of the leg are. Rectus femoris, Vastus lateralis, Vastus medialis and Vastus intermedius .

Rectus femoris is attached to the hip and helps to extend or raise the knee. Vastus lateralis, is the largest part of the quadriceps femoris, a muscle in the thigh. Four muscles in quad group helps to straighten your knee the rectus femoris, the vastus intermedius, the vastus lateralis, and the vastus medialis.

Only biceps femoris is not a member of the quadriceps and is actually an antagonist muscle found on the posterior leg.

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Answer:

Explanation: 4 I would think at the youngest.

the volume increases faster than the surface area

Explanation:

when the cell increases in size the volume increases faster than the surface area because volume is cube where surface area is a squared. when there is more volume and last surface area diffusion takes longer and is less effective this is actually why cells divide.

According to island biogeography theory, the highest numbers of species would be found on islands that are large and close to the mainland.

Island biogeography theory is a theory that explains the relationship between island size and distance from the mainland to the number of species found on an island. It was developed by Robert MacArthur and Edward O. Wilson in the 1960s. The theory suggests that larger islands have higher species richness than smaller islands, and islands closer to the mainland also have higher species richness than islands that are farther away.

The explanation behind the theory is that larger islands have more habitat diversity, which can support more species. Also, islands closer to the mainland are more likely to receive immigrant species from the mainland and have lower extinction rates than those that are farther away.Therefore, according to the island biogeography theory, the highest numbers of species would be found on islands that are large and close to the mainland.

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Answer:

Ofcourse it's going to be growing trees