correct explanation for species​

Answer:

1)centriole

2)asexual reproduction

Answer:

Why is the Calvin cycle considered a cycle? The Calvin cycle is a dark reaction because it does not need sunlight. Although it can happen during the day, this process does not require energy from the sun to work.

Explanation: it does not need sunlight.

The purpose of a control in scientific experiments is to provide a comparison or reference point for the experimental results. It helps to validate the experimental setup and ensure that any observed effects or changes are indeed due to the variables being tested and not influenced by other factors.

In the context of a positive control, it is a type of control used to confirm that the experimental system or method is capable of producing the expected or desired result. The positive control contains a component or substance that is known to elicit a specific response or outcome. Its purpose is to demonstrate that the experimental conditions are suitable for generating the expected response, thus validating the reliability and sensitivity of the experimental setup.

The specific molecule or substance required in the positive control solution depends on the nature of the experiment being conducted. It is typically a known target molecule or a substance that exhibits a well-established and identifiable response.

For example, in a biochemical assay, a positive control may contain a specific enzyme or protein that is known to catalyze a particular reaction or exhibit a specific activity. The presence of this molecule in the positive control solution confirms that the experimental system is capable of detecting and measuring the expected activity or response.

It is important to note that the choice of specific molecule or substance for the positive control should align with the objectives and requirements of the experiment and should be based on previous knowledge or literature in the field.

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Answer:

Below 200 umol photons/mº/s, shade plant grow best.

Above 400 umol photons/mº/s, sun plant grow best.

Explanation:

A shade plant has a  higher rate of photosynthesis when light intensity is present below 200 umol photons/mº/s because shade plants needs low light intensity for higher photosynthesis while on the other hand, a sun plant has a  higher rate of photosynthesis when light intensity is above 400 umol photons/mº/s because it requires high intensity of light for photosynthesis if other factors are also present in large amount such as water and nutrients in the soil.

Answer:

4 ml

Explanation:

m = D/ v where m is mass and D is density and V is volume

.875 = 3.5/V

Multiply each side by V

.875 V = 3.5

Divide each side by .875

V = 3.5/.875

V =4

The statements habitat fragmentation results in lower species richness in the fragments than in the original habitat and Small, isolated patches lose species more rapidly than larger, isolated patches are false.

Habitat fragmentation describes the emergence of discontinuities in an organism's preferred environment, causing population fragmentation and ecosystem decay.

Fragmentation happens when parts of a habitat are destroyed, leaving behind smaller unconnected areas. This can occur naturally, as a result of fire or volcanic eruptions, but is normally due to human activity.

Habitat fragmentation can be caused naturally, however, the leading cause of habitat fragmentation are human activities and development through land clearing, deforestation, and habitat destruction.

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Respuesta:

La respuesta correcta es: E) naranja.

Explicación:

La vitamina C está presente en los cítricos, como la naranja, el limón y el pomelo. La naranja es una fruta muy rica en vitamina C, de hecho, basta con una al día para cumplir con los requerimientos diarios de esta importantísima vitamina.

Si bien el consumo de vitamina C no cura enfermedades, se probó que tiene un papel fundamental a la hora de reforzar nuestro sistema inmunitario, que es aquel que nos protege de los diferentes microorganismos que nos pueden enfermar.

Además de su rol importante en fortalecer nuestras defensas inmunitarias, el consumo diario de cítricos contribuye a prevenir el cáncer de colon y a regenerar los cartílagos.

Answer:

Debido a la presencia de partículas pesadas.

Explicación:

Debido a la presencia de carga positiva en el núcleo del átomo de Thomson, las partículas alfa α rebotaron cuando chocaron con el protón porque el protón es una partícula pesada y la presencia de neutrón la hace más pesada. Debido a la presencia de partículas pesadas en el núcleo, las partículas alfa no pueden atravesarlo. Solo puede pasar a través del átomo de Thomson donde hay un espacio vacío en el átomo.

Answer:

There are 4 types of breezes: land breeze, sea breeze, mountain breeze and valley breeze.

The breeze will originate from an area of high pressure and travel towards/blow in the direction of the area at a lower pressure.

In each case, the name of the breeze indicates where the breeze is blowing from. For instance, the land breeze will blow from the land (at high pressure) to the sea (at lower pressure). A mountain breeze will blow from mountain (at high pressure) towards the valley (at low pressure).

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In Anaphase of mitosis chromosomes pull away from the middle of the cell.

It is the process by which cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division.

It is along DNA molecule with part or all of the genetic material of an organisms.

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Answer:

BBBBBB

Explanation:

Answer:

The answer is (B) or Asexual Reproduction (If you are on Edge2021).

Explanation:

Oh and by the way sometimes answers with 3 stars can be wrong so for other people's sake and their grades, please rate this 4 or 5 stars. As I said, if the answer is right, don't rate it the lowest rating, like good for 3 stars.  That is kinda rude, and it can mess up people's grades.

Did you know: If you get good grades, you can get into good schools and universities as you get older? It is a true fact (at least I think...).

Anyways, that is your answer! Have a great day/night!

The disappearance of a large number of species or a higher taxonomic group within a relatively short period of time is known as a mass extinction. Option A is the answer.

Mass extinctions are events that have occurred throughout the Earth's history, and are marked by a significant loss of biodiversity. These events can be caused by a variety of factors, such as climate change, asteroid impacts, volcanic eruptions, and human activities.

The most well-known mass extinction event is the one that occurred approximately 65 million years ago, which led to the extinction of the dinosaurs and many other species. Mass extinctions have significant and long-lasting impacts on the Earth's ecosystems and can take millions of years to recover from. Option A is the answer.

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Answer:

Mitochondria

Explanation:

convert energy from one form to another, have their own genetic material, surrounded by double membrane.

Answer: Chloroplasts and Mitochondria

Answer:

During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

Answer: The correct answer is Choice A.

Explanation:

Using the evolutionary (phylogeny) tree, a clade is a group that shares a common ancestor. Think of it like pruning a tree branch, all of the smaller branches that share that same main trunk are in a clade. So, in the question options, we see that only choice A includes smaller branches that share the main trunk. The other choices (B, C & D) either span separate trunks or do not include all of the branches.

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Failed external innate immunity, but successful internal innate immunity

Immunity in biology refers to an organism's capacity to fend off harmful microbes. Both specific and generic components contribute to immunity. Regardless of their antigenic makeup, the nonspecific components serve as barriers to or eliminators of a variety of infections.

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The correct answer is c) fertilization of the cell egg with a sperm cell followed by implantation in a surrogate mother.

Cloning animals by nuclear implantation involves the removal of somatic cells and extraction of a diploid donor nucleus from the animal to be cloned, followed by the injection of the nucleus into an enucleated egg cell. This egg cell is then induced to divide and form a blastocyst, which is implanted into a surrogate mother.

The low frequency of success in animal cloning is likely due to variations in the completeness of epigenetic programming of the somatic cell nucleus, which can affect the ability of the cloned embryo to develop properly.

It is important to note that fertilization with a sperm cell is not involved in animal cloning by nuclear implantation, as the nucleus of the somatic cell replaces the egg cell nucleus.

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A recessive allele can only appear in the phenotype of an individual if that individual is homozygous recessive for that trait.

A recessive allele is a genetic characteristic that only presents itself in the phenotype when the dominant allele isn't present. A recessive trait is a genetic characteristic that appears only in the homozygous recessive state. For instance, brown eyes are a dominant characteristic, whereas blue eyes are a recessive characteristic.This genetic trait is present in the genotype of the individual in question.

If an individual is homozygous recessive for a certain trait, it means that they have two copies of the recessive allele for that trait. This is because the recessive allele is covered up or masked by the dominant allele in heterozygous individuals. Thus, the recessive allele only becomes apparent in homozygous recessive individuals.

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Answer:

Peptide bonds

A covalent bond formed by joining the carboxyl group of one amino acid to the amino group of another, with the removal of a molecule of water.

Peptide bonds are simply amide functional groups that link the amino acids in a protein.

A peptide possesses the covalent bonds which are formed by the reaction of carboxyl group of one amino acid with the amino groups other amino acids.

A PEPTIDE bond will connect two amino acids to produce a molecule known as a dipeptide.

Each amino acid has one Carboxyl group (-COOH), one Amine group (-NH2), one hydrogen atom, and one variation (R) group connected to a primary carbon atom known as the alpha carbon. A dipeptide bond is created when the OH from one amino acid's carboxyl group reacts with one hydrogen (H) from another amino acid's amine group. Because a water molecule is eliminated during this event, it is classified as a hydrolysis reaction.

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Answer:

plant and animal species

Note:

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A biome is define by its climate and plant communities. Therefore, option (B) is correct.

A biome is a big area in nature that has its own unique climate patterns and is home to certain types of plants and animals. A variety of ecosystems with comparable climate and vegetation types are included.

The environment of a biome is influenced by various factors like temperature, rainfall, and soil type. These factors play a crucial role in determining the kinds of plants that can grow and the animals that can live in that particular area. There are different types of biomes such as tropical rainforests, deserts, grasslands, tundra, and taiga.

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Answer:

B

Explanation:

Genes are sections of DNA that hold the instructions for building proteins that ultimately code for traits.

The spring and fall when perennial broadleaf weeds are actively developing and storing sugar back into the roots as a reserve for regrowth in the spring are the optimum times to control them.

The homogeneity of the turf is disrupted by weeds, and they compete with ideal grass species for moisture, light, and nutrients.

2,4-D, MCPP, and dicamba are effective broadleaf herbicides. A combination of two or all three of these chemicals can be found in the most effective broadleaf herbicide products. Combination treatments are more effective in controlling a variety of broadleaf weeds than single compounds.

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Answer:

a

Explanation:

The term that describes a single female arctic fox is a vixen.

A vixen is a female fox, including the arctic fox, that is not pregnant or nursing young. It belongs to the Canidae family and is found in the tundra and other Arctic regions of the Northern Hemisphere.The Arctic fox is a small, compact, and sturdy mammal that can survive in some of the world's harshest environments.

The population of Arctic foxes that lives along the eastern coast of Russia is not referred to as a group of polar bears. It is known as a population, a community, or a family.A population is a group of animals of the same species that live in the same area and interact with one another.

A family of arctic foxes is made up of a male and female adult and their offspring. They live together in underground dens that are used for shelter and protection.Arctic foxes are considered a keystone species in the Arctic region because they play a crucial role in the ecosystem. They feed on small animals like lemmings and voles, which helps to regulate their populations. In addition, they are a food source for larger predators like wolves and polar bears, which helps to maintain balance in the food web.

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Answer:

Water is a micromolecule which goes inside the egg.

Explanation:

The egg increased in mass by placing it in distilled water but decreased in mass in the corn syrup because water is a micromolecule which can easily moved into the egg through the small pores of the shell by the process of osmosis while the corn syrup is a macromolecule which is big for the pores present in the shell so that's why due to water movement through the pores increases mass of the egg.