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Answer:

The answer is cells

Explanation:

I've done this question for school before and have gotten it right. Hope this helps! Please give brainliest!

Answer:

The Basic Unit of life is cells!

Answer: When mutation occur in the sex cell/germ cell it is known as Germinal mutation but if mutation occur in cell other than sex cell it will be called as Somatic mutation.

Explanation:

Germlines mutation: As this type of mutation occurs in germ cells (sperm and egg), this mutation can pass on to offspring when either muted sperm or gametes fertilize to form zygote. Example of germline mutation is inherited diseases like Down syndrome.

Somatic mutation: Somatic mutation can occur in any cell like muscle cell, gut, immune system but not in the germ cells and therefore cannot pass to the offspring. Examples of somatic mutation are  Cancer and tumor

The primary difference between germline and somatic mutations lies in their potential for inheritance. Germline mutations occur in reproductive cells, can be passed on to offspring, and affect every cell in the offspring. In contrast, somatic mutations occur in non-reproductive cells, do not get passed to offspring, and usually have localized effects such as cancer.

Germline mutations and somatic mutations are two major categories of mutations that occur within the cells of an organism. Germline mutations happen in the reproductive cells known as gametes — eggs and sperm — and are inheritable, meaning they can be transmitted to offspring. In contrast, somatic mutations occur in the somatic or non-reproductive cells of the body, and while they can lead to issues such as cancer within the individual, they cannot be passed down to the next generation.

Germline mutations are significant as every cell in the offspring will contain these mutations, which can lead to inherited diseases or traits. Somatic mutations, on the other hand, may remain confined to a single cell and its progeny, potentially leading to localized effects such as the development of tumors or other somatic issues but not affecting the germline. Therefore, the distinction between germline and somatic mutations is critical for understanding the inheritance and impact of genetic mutations.

The rate of mutation may also differ; somatic cells, due to their vast numbers and frequent replication, often acquire more mutations compared to gametes. In humans, the current estimate of the chance of a new germline mutation is approximately 1x10-8 per base pair per generation, which is significant given the large number of base pairs in the human genome.

The purpose of biofertilizers is to reduce pollution, which is in Option A because the pollution occurs in the soil, and when the soil is washed away, the pollution from the soil enters the water, causing water pollution, and so on.

The purpose of biofertilizers is to increase soil fertility and crop productivity by introducing beneficial microorganisms, such as bacteria and fungi, and to reduce soil and water pollution, these biofertilizers are considered as an eco-friendly and sustainable alternative to synthetic fertilizers, as the synthetic fertilizers have negative impacts on soil health because it contains chemicals that cause soil acidification, nutrient depletion, and overall harm soil fertility etc.

Hence, the correct answer is that the purpose of biofertilizers is to reduce pollution, which is in Option A among all the other options.

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A rough, steep mountain habitat will have much higher rate of speciation than an open grassland habitat, and there are few reasons for that. The rough, steep mountain will have several biomes, depending on the elevation, as the climate is changing with the elevation, thus the living conditions are different. This results in different types of organisms at each biome in accordance with the elevation, so there will be much more different species because of the specializations required. The mountain will also act as a natural barrier for the air masses, resulting in the windward side being much more moderate in the temperature and wetter. The leeward side, on the other hand, will be much drier and warmer. This will result in further specialization, by having different habitats on the two different sides of the mountain even though the elevations are the same. The open grassland habitat will have much less speciation, with the prime reason being that it has monotonous conditions, thus the organisms will be the same all over it as the conditions are the same all over ti.

Answer: The mountain would isolate subgroups of the population.

Explanation: APEX 8/22/19

Answer: Are multicellular

Explanation:

Answer:

Are multicellular

Explanation:

All the animals are included in the Kingdom Animalia. It is the largest Kingdom among other kingdoms namely Monera, Protista, Fungi and Plantae. Animals are multicellular and their cells are eukaryotic. They have heterotrophic mode of nutrition. Based on their body design Kingdom Animalia is into different phyla. Examples of animals are Hydra, earthworm, insects, birds, humans.

Answer:

Most fossils are found in sedimentary rocks, those rocks produced by the accumulation of sediment such as sand or mud. Wind and other weathering conditions wash away sediment on land, depositing it in bodies of water. For this reason, fossils of sea creatures are more common than those of land creatures.

Fossils are remain of decayed plants and animals over a very long period of time. Most fossils are found in sedimentary rock deposits which might have been exposed due to erosion, quarrying or at shore.

Therefore, fossils could also be found during quarrying and rock cutting process.

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Answer: The parent cells are diploid.

Answer:

Explanation:

The offspring will receive half of the DNA and will be given a diploid set when the gametes are fertilized. credit to pubsub my bestie you better add her or else I will visit you with my pickaxe

Answer:

In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time.

Answer: outer core and inner core

: Seismic waves do not travel through the upper mantle, lower mantle, outer core, or inner core. Seismic waves are waves of energy that are generated by earthquakes or other disturbances in the Earth's crust. There are two main types of seismic waves: P-waves (primary waves) and S-waves (secondary waves).

P-waves are longitudinal waves that travel through the Earth's interior by compressing and expanding the material they pass through. S-waves, on the other hand, are transverse waves that move perpendicular to the direction of wave propagation.

S-waves can only travel through solid materials and are therefore blocked by the liquid outer core and the solid inner core of the Earth.

The upper mantle and lower mantle are both solid layers of the Earth's interior and are able to transmit both P-waves and S-waves. However, the outer core is a liquid layer, and S-waves cannot propagate through liquids. The inner core, although solid, is under such intense pressure that it behaves like a liquid with respect to seismic waves, and S-waves cannot pass through it either.

The fact that S-waves do not travel through the outer and inner core has been instrumental in helping scientists understand the internal structure of the Earth.

By analyzing the way that seismic waves are reflected and refracted as they pass through the Earth, scientists can create models of the Earth's internal composition and infer details about the density, temperature, and other physical properties of its different layers.

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Answer:D 46 Chromosomes

Explanation:

Answer:

fetal-placental circulation allows the umbilical arteries to carry deoxygenated and nutrient-depleted fetal blood from the fetus to the villous core fetal vessels.

Explanation:

Final answer:

The fetal placental blood capillaries are close to the mother's to enable the effective exchange of oxygen, nutrients, and waste without the blood mixing. The chorionic villi facilitate this exchange by providing a large surface area while still keeping the circulatory systems separate. Avoiding fetotoxic substances is crucial as they can cross the placenta and harm the fetus.

Explanation:

The fetal placental blood capillaries are very close to the mother's blood capillaries to facilitate the efficient transfer of substances between the fetus and the mother. This proximity allows for the exchange of gases, nutrients, and waste products across their capillary walls without the two blood supplies mixing. The maternal and fetal blood is separated by the chorionic villi, which provide an ample surface area for the two-way exchange, ensuring that vital substances such as oxygen and nutrients pass from the mother to the fetus while carbon dioxide and other waste products are removed from the fetal blood.

The placenta is a temporary organ where the maternal and fetal blood vessels are tightly intertwined, yet separated by thin membranes. This structure allows a high rate of exchange, which increases throughout gestation as the villi become thinner and more branched. Despite this closeness of the vessels, blood cells are not exchanged, which maintains the separation between the mother's and fetus's circulatory systems while still allowing for the critical transfer of substances.

Furthermore, the placenta is permeable to various substances, some of which can be harmful. It is important to avoid fetotoxic substances such as alcohol, nicotine, and certain drugs, which can cross the placenta and cause damage to the developing fetus. This underlines the importance of maternal health and well-being for the optimal development of the fetus.

Answer:

D. :)

Explanation:

The double-layered structure of phospholipids with proteins is known as the cell membrane. It separates the interior of the cell from the external environment and the embedded proteins perform important functions.

The structure you're referring to, a double layer of phospholipids with proteins, is known as the cell membrane (Option B). This boundary, also termed plasma membrane, separates the cell’s interior from its external environment. The phospholipids form a 'bi-layer' with their hydrophobic (water-repelling) tails pointing inwards and their hydrophilic (water-attracting) heads facing outwards.

The proteins embedded within this structure carry out a variety of essential functions such as transporting substances in and out of the cell.

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The common feature of all macromolecules is that they are formed from the same elements.

WHAT ARE MACROMOLECULES?

Hence, The common feature of all macromolecules is that they are formed from the same elements.

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Answer:

I think it would probably be photosphere.

Explanation:

Answer:

the answer to your predicament is the photosphere, which is like the surface, unlike, the sun's crown, which is what most people think the surface is

The use of DNA in criminal cases became possible due to discoveries in the mid-20th century that proved DNA is the genetic material, leading to techniques like DNA fingerprinting and genomic analysis utilized in cases like the 2001 FBI anthrax investigation.

The use of DNA as evidence in criminal investigations became possible thanks to pivotal discoveries in the twentieth century that identified DNA as the genetic material. Groundbreaking experiments by scientists like Griffith and later by Avery, MacLeod, and McCarty laid the foundation by establishing that DNA, and not protein, is the key molecule of heredity. This scientific milestone paved the way for the development of DNA fingerprinting by Dr. Alec Jeffreys, which facilitated the retrieval and analysis of DNA from biological samples such as hair, blood, or saliva. Virtually every individual has a unique DNA sequence, which allows forensic experts to use these genetic markers in the identification process and in solving crimes. The first landmark use of genomics in a forensic case emerged in 2001, with the FBI's investigation into bioterrorism involving anthrax.

Moreover, DNA analysis has transcended its forensic applications and is used in areas such as genealogy, medical diagnostics, vaccine development, and cancer therapy.

Genomic analysis remains an invaluable tool in both legal contexts for evidence validation, as well as in broader scientific research and healthcare practices.

Answer:

The correct option is D.

Explanation:

Adaptive radiation refers to the ability of living organisms to evolve rapidly from an ancestral forms into variety of other forms especially when the organisms move into a new environment that has abundant resources. The resources, which are present abundantly in the environment allow the living organisms to spread out in the environment and to find different habitats in the environments that favour their survival.

In the question given above, adaptive radiation allows plants to fill different habitats (niches) that are found on land and to spread out rapidly.  

the answer is d.

just did it on apex

Answer:

Because photosystems need light to operate (photo=light).

Photosystems use energy from sunlight, Calvin systems use energy stored in the plant.

Explanation:

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. Other names for the Calvin cycle include the Calvin-Benson cycle, light-independent reaction, carbon fixation and C3 pathway.

The Calvin cycle work at night, but the photosystems cannot because the photosystem needs direct energy from sunlight to be operated functionally.

Photosystems may be defined as functional and structural units of protein complexes involved in photosynthesis that contains chlorophyll pigments that absorb light energy for photosynthesis.

The Calvin cycle is a light-independent reaction that occurs during the night as well as daytime. But it utilizes the stored energy to make its final products with the help of several enzymes.

Therefore, it is well described above.

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Mechanoreceptors detect mechanical stimuli such as touch, pressure, sound waves, and motion. These receptors initiate nerve impulses when physically deformed by an outside force. Several types of mechanoreceptors, including Merkel cells and Pacinian corpuscles, are specialized for different kinds of mechanical detection.

The correct option is 'A'.

Mechanoreceptors detect mechanical forces, and the type of stimulus they are especially tuned to includes touch, pressure, sound waves, and motion. These receptors enable us to sense various forms of mechanical input such as the texture we feel via touch or the vibrations we hear as sound.

The process by which they work involves the deformation of the receptor upon the application of a mechanical force, which initiates nerve impulses in sensory neurons.

Mechanoreceptors are categorized based on the threshold of stimulus they respond to.

Low-threshold mechanoreceptors respond to non-damaging, light stimuli, while high-threshold mechanoreceptors respond to stimuli of a higher intensity and are considered a type of nociceptor, contributing to our sense of pain when the applied pressure is severe enough, such as pinching or crushing.

They can be found in various locations, including the skin, where they are essential for the sense of touch, and in the inner ear, where they are necessary for the senses of hearing and balance.

Distinct types of mechanoreceptors are specialized for detecting different kinds of mechanical stimuli, for example, Merkel cells detect low-frequency vibrations, Pacinian corpuscles sense deep pressure and vibration, and Ruffini corpuscles respond to skin stretching.

This question is incomplete, the complete question is :

which type of stimulus do mechanoreceptors detect?

A. sound

B. pain

C. heat

D. light

Multipotent stem cells have the ability to differentiate into a limited number of cell types within a specific lineage. The kind of stem cells that blood stem cells are is A. Multipotent stem cells.

Multipotent stem cells, such as blood stem cells, have the ability to differentiate into multiple cell types within a specific lineage or tissue. In the case of blood stem cells, they can give rise to different types of blood cells, including red blood cells, white blood cells, and platelets. This versatility allows blood stem cells to replenish and maintain the blood cell population throughout a person's lifetime.

In the case of blood stem cells, they have the capacity to develop into various types of specialized blood cells, such as red blood cells, white blood cells, and platelets. While blood stem cells are highly versatile within the context of blood cell development, they do not have the ability to differentiate into cells from other germ layers or tissues outside the blood lineage.

Therefore, they are classified as A. multipotent stem cells.

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Answer:

A

Explanation:

Gene flow is the transfer of genes across two populations. This happens if there is mating between the two populations. However, this can be curtailed either by allopatry (due to geographical isolation) or sympatry (due to behavioral isolation) which results in reproductive isolation between the two populations. If the two population were of the same species, then the reproductive isolation can result in divergent speciation of the two populations.

Answer:

A). A decrease in gene flow.

Answer:

No, the nonrenewable resources can not be used sustainably.

Explanation:

Non-renewable resources are those that cannot be regenerated, however if we manage to use them in a responsible and conscious way we can prevent them from disappearing due to their exploitation.

Sustainability is the ability to make use of natural resources without causing major damage to nature, and the ability to reproduce and replenish these resources over time, because the resources are non-renewable there can be no replenishment.The best known non-renewable resources are fossil fuels, so that their exploitation is rational we must reduce exploitation to large quantities but we can´t do its explotation sustainably.

Answer:

The correct answers are endocytosis and the receptors are specific for the cells.

Explanation:

The white blood cells are the unique cells of the immune system. They perform an essential function of safeguarding the body from foreign agents like bacteria. In order to do so, they identify the bacteria and produces an envelope around it, pinching off the vacuole. With the help of this, the cell performs a procedure known as endocytosis.  

On the white blood cells, the receptors found are very unique, as because of them they identify the particular foreign particles, like B cells generate antibodies that combines with the particular antigens, and thus, impart specific immune response. Or it can be said, that specific foreign component is identified by the unique white blood cell, which shows that the receptors on these cells are unique.  

The receptors in this context refer to Pattern Recognition Receptors (PRRs), present on white blood cells, specifically macrophages involved in phagocytosis. Each receptor is specific to certain types of foreign substances, allowing the body's immune system to recognize and respond to a variety of pathogens.

The receptors referred to in the student's question are Pattern Recognition Receptors (PRRs). These are found on immune cells like white blood cells, including monocytes and macrophages, which recognize Pathogen-Associated Molecular Patterns (PAMPs), the 'signatures' of foreign particles such as bacteria and viruses. The cell mentioned that forms a covering around bacteria and pinches off a vacuole, before performing the immune response is a type of white blood cell, notably, macrophages. They engulf the foreign pathogens in a process called phagocytosis.

Each type of receptor is specific to a type of foreign particle, hence the distinction between the particles that different cells can recognize. For instance, Toll-like receptors (TLRs), a subtype of PRRs, can recognize molecules commonly shared amongst pathogens, but distinguishable from the host's molecules.

Furthermore, this specificity of receptors is crucial to the immune response, allowing different white blood cells to recognize and respond to a wide variety of invaders.

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 New research by Nina Jablonski and George Chaplin has led to the discovery that women across the world generally produce 3-4% less melanin in their skin than men.

 They suggest that this is probably due to the fact that women have much higher calcium requirements during their reproductive years.

Why is fair skin attractive?

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Answer:

D. Encouraging recycling programs

Explanation:

A. wouldn't be the answer because landfills just put more trash into the earth. It takes alot of years for those items to break down and decompose.

B. Finding a new source of coal isn't going to last the rest of our time on Earth, it too will eventually run out.

C. Increasing consumption is going to be that we have even more extra that we don't know what to do with.

D. Encouraging recycling programs is your best answer because it gives the best opportunity for things to be reused or broken down to be made into something else.

Encouraging recycling programs can promotes sustainability. The correct option is D.

Recycling is the collection and processing of materials that would otherwise be discarded as trash in order to create new products.

Recycling saves trees and forests and reduces the need for new metal ores which aids in sustainability.

Thus, the correct option is D.

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Answer:

false?

Explanation:

anytime a wave hits the shore, it displaces a small amount of sediment, so technically its always destroying it but rebuilding it at the same time.

Answer:

Explanation:

You list the references in order of the last name of the author. For instance a book by Zachary Adam would come before a book by Adam Zachary. (Just an example)

Adam, Zachary. "Works Cited Example 1." Place of Publication: Publisher, Year.

Zachary, Adam. "Works Cited Example 2." etc.

Answer: Alphabetically by the first item in the entry.

Explanation:

Penn Foster

There are archaea in a different domain from bacteria,   They had independent evolutionary development.

Archaea differ from bacteria in cell wall arrangement and differ from both bacteria and eukaryotes in membrane design and rRNA type.

These contrasts are important enough to warrant that archaea have a separate domain.

Thus, option "A" is correct, They had independent evolutionary development.

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A. They had independent evolutionary development.

Answer:

D- The embodied mind

Explanation:

Konichiwa~! My name is Zalgo and I am here to help you today. The steps of the Scientific Process are shown as following:

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