Imagine you are using a microscope to observe a cell undergoing cell division. How can you be sure that the cell in this figure is undergoing meiosis, rather than mitosis? select all that apply.

Answer:C. The cell will shrink as water moves out of the cell to try to balance the solute concentrations

Explanation:

A cell placed into a hypertonic solution will shrivel and die by a process known as plasmolysis.

The diploid hybrid plant will have 22 chromosomes.

During fertilization, chromosomes of both parent plants are taken equally. First plant has 24 diploid chromosome. Second plant has 20 diploid chromosomes. Since fertilization involves the union of gametes from both parent plants, 12 diploid chromosomes are taken from the first plant while 10 diploid chromosomes are gotten from the second plant, hence, the hybrid plant will be made up of 22 diploid chromosomes.

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During the reign of terror, the Law of Suspects was enacted, allowing police to arrest anyone who did not consistently support the revolution, and the king's supporters defeated Robespierre's rebellion.

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When species occupy comparable ecological niches and respond similarly to similar selection forces, this is known as convergence in evolution. Analogous structures are traits that result from convergent evolution.

Gene variants, commonly referred to as mutations, and a natural process in which genetic information is reorganised as a cell prepares to divide can both result in genetic differences (known as genetic recombination). Genetic changes that affect gene activity or protein function can give an organism distinct features.

Some organisms can survive in their environment more successfully than others due to genetic variety in a group of species. Even among a small population of organisms, there can be dramatic differences in how well-suited they are to a given habitat.

The majority of mutations within an organism neither negatively nor favourably affect it.

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It is to be noted that the cited article is "Margaret Mead: Human Nature and the Power of Culture." See the explanation and answers below for further information.

Margaret Mead's examination of Samoan culture may have been influenced by her own culture and experience because:

Her perception of how adolescents should behave based on her environment and upbringing may have colored her observation and expected results. Note that it is insufficient to conclude by observing two cultures what a generally accepted behavior for adolescents should be.

There are universal taboos in human nature. According to Sigmund Freud, some of them are Cannibalism, incest, and patricide.

It is appropriate to assess the strength of Mead's arguments based on the methodology she employed to conduct her study. Science should be practical and realistic.

While observation is one approach to acquiring primary evidence, there is no way to tell if the Samoans were being nice because she was a tourist and so did not act as they would if she were not present.

In science, observations should be carried out in such a way that the population or sample being observed is not harmed while the observer stays unknown.

Mead's identity and sexuality were included in the piece since it was critical that the report on her own report be neutral. Although it is not stated directly, the information provided regarding Mead's sexuality offers the reader a sense of the probable factors that may have led to her being subjective, if at all.

Unless such a study is subjected to peer review, it cannot be guaranteed that certain components of subjectivity will not be present.

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Answer:

no please

Explanation:

prokaryotic cells do not have and nuclear bound membrane but have nuclear particles like 70s ribosomes

Capillary sphincters are circular muscular walls that regulate blood flow through the capillaries.

Specialized cells known as muscle fibers make up the muscular system. Contractibility serves as their primary purpose. Movement is made possible by muscles that are affixed to bones, internal organs, or blood vessels. Muscle contraction produces the majority of body movement. The movement of cilia, the flagellum on sperm cells, and some white blood cells that move in an amoeboid manner are examples of exceptions to this rule. Simple movements like walking and running are produced by the coordinated action of joints, bones, and skeletal muscles. Skeletal muscles can also be seen moving in more subtle ways, which results in different face expressions, eye movements, and breathing patterns. They help with digestion, regulate respiration and heartbeat, and permit mobility. When you work out and eat well, your muscles flourish just like the rest of your body.

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The correct answer is sarcoplasmic reticulum cytosol sarcolemma t tubule terminal cisterns (cisternae).

The action potential invades T-tubules and opens L-type calcium channels, causing ryanodine receptors (RyRs) in the SR to open and release calcium, stimulating contraction. Calcium ions cause muscle contractions. In response to an action potential, the sarcoplasmic reticulum releases calcium ions, which bind to troponin on actin filaments and cause conformational changes that expose myosin-binding sites. Tropomyosin's tertiary structure is altered when calcium ions bind to it. As a result, tropomyosin moves away from actin-myosin binding sites, allowing cross bridges to form. Calcium ions also activate the enzyme ATP hydrolase, which hydrolyzes ATP and provides energy for contraction.

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If there is an X number of water molecules inside and outside the cell, the the water will not move.

Because the cell is placed in the isotonic solution.

Isotonic Solution- Solutions that contain the same concentration of water and solutes as the cell cytoplasm are called isotonic solutions. Cells placed in an isotonic solution will neither shrink nor swell since there is no net gain or loss of water.

Cell- As in the case of bacteria and protozoans, a single cell can be a whole organism in and of itself. In multicellular creatures like higher plants and animals, specialized cell groups are arranged into tissues and organs. Prokaryotic cells & eukaryotic cells are two different kinds of cells.

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The locations for three genes have been added to this cartoon. For clarity, the locations have only been noted on one chromatid. The lowest frequency of crossovers would occur between genes  a and b.

A cell generates a fresh copy of all of its DNA as it gets ready to divide, resulting in two copies of each chromosome in the cell. "Sister chromatids" refer to the two copies of the cell's original chromosome.

The two chromatids are torn apart during anaphase of cell division, and the chromatids are distributed among the cytoplasm of each daughter cell.

A vast quantity of DNA that is arranged physically into a single structure is called a "chromosome." Because of this, the "sister chromatids" are regarded as being separate chromosomes even though they are joined together. Each chromatid is thought to be its own chromosome once they are divided during anaphase.

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Some plants thrive most in winter. An example is the winter wheat. Winter wheat and similar plants have evolved to tolerate extreme cold. specifically, the winter wheat plant can increase the percentage of unsaturated phospholipids in its membrane during the winter season. This helps the plant in that

The plasma membrane is the membrane that surrounds all cells. They serve as a barrier between the cytoplasmic location and the cell's internal environment. Phospholipids make up the plasma membrane. This lipid bilayer is referred to as a biomembrane or living membrane. This bilayer has a variety of proteins and lipids that are embedded in it.

The unsaturated fatty acids in the membrane have double bonds known as kinks. This kink in the membrane inhibits the membrane from being tightly packed, which might cause the membrane to become rigid. Because the double bonds provide room between the phospholipids, this characteristic also plays a role in membrane fluidity. It will keep the molecule from freezing when the temperature drops.

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Vital signs of geothermal activity include volcanoes, hot springs and others

When water bodies come in contact with a hot rock, it manifest clearly as geothermal energy as this geothermal activity produce energy from overheated water which is very dangerous and life threatening.

Geothermal activities simply refers to those activities which produces renewable energy which is and always be stored in rocks and water in the center of the earth.

So therefore, when certain signs such as volcanoes or hot springs manifest, it symbolize that a geothermal energy is at work in any given caldera.

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Every cell in the body divides through a procedure known mitosis to produce new cells. Due to this, the body grows and changes. The primary objective of mitosis is to replace worn-out cells.

A cell cycle is a sequence of events that occurs in tandem with a cell's growth and division. The majority of a cell's time occurs in the phase known as interphase, during which it matures, copies its chromosome, and prepares to divide. The cell then completes mitosis, exits interphase, and splits to completion.

Genetic variation can only be created by cell division. Cell division is an important process in which a unicellular creature transforms into a new organism in unicellular organisms.

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The complete question is -

Where in your body do you think cell division is occurring ? What led you to this conclusion?

When a planet is in a star's habitable zone It has the right temperature to have liquid water.

The correct option is C.

The orbital region around a star known as the habitable zone is where an Earth-like planet would be able to support life and have liquid water on its surface. Since liquid water is necessary for all life on Earth, it is assumed that alien life would also require it for defining a habitable zone.

For water to continue to be a liquid, the distance at which Earth orbits the Sun is ideal. The habitable zone, sometimes known as the Goldilocks zone, is defined as being this far from the Sun. Rocky exoplanets located in their stars' habitable zones are better candidates for detection of liquid water on their surfaces.

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Treppe refers to the graduated increase in contractions caused by the exposure of the muscle to several identical stimuli. Option A is correct. A progressive increase in the force generated with repetitive stimulation

When several identical stimuli are applied to a resting muscle, they generate a series of contractions that increase gradually.

Treppe is the gradual increase in muscle contraction as it is constantly exited by these repeated stimuli.

Treppe results in more forceful contractions.

Option A is correct. A progressive increase in the force generated with repetitive stimulation

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The statement that is factual is as follows: Asexual reproduction produces offspring that are identical to the parent (option A).

Reproduction is the process whereby living organisms procreate or produce new copies of themselves.

Reproduction can either occur asexually or sexually. Sexual reproduction is the process whereby a new organism is created by combining the genetic material of two organisms.

On the other hand, asexual reproduction is the form of reproduction that does not involve the fusion of gametes but rather involves only one parent organism.

Asexual reproduction produces identical offsprings while sexual reproduction produces genetically different offsprings.

Therefore, it is a fact that asexual reproduction produces genetically identical offspring.

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Answer:

The answer is Asexual reproduction produces offspring that are identical to the parent.

Explanation:

Or aka As A)

The activation of additional motor units in order to produce a contraction with greater tension is known as motor unit recruitment.

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Answer:

It began to snow, but his body was so bruised and numb that snow and cold were no matching adversaries. Blood had dried around his throat, making the job easier

Explanation:

use this link and copy it then go to a paraphrasing tool

Since the cell has nucleus as well as cell wall then it can be concluded that the cell is a plant cell.

Nucleus is the most important cell organelle in the eukaryotic cells. It is a double membranous structure with pores in it that allows the exchange of substances between nucleus and cytoplasm. The nucleus regulates all the actions of the cell as well as stores the genetic material.

Plant cell is different from rest of the cells as it possess both cell wall and nucleus, a feature not present in any other cell. Plant cells also possess the chloroplast that contain the pigment called chlorophyll which provides the characteristic green color to the plant cell.  

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Answer: Plants get the water they need for photosynthesis through their roots. The roots have a type of cell called a root hair cell. These root hairs project outward from the root into the soil. Roots have a big surface area and thin walls, which allow water to pass through them easily.

Explanation: Hope it helps :)

Hom0genous mixtures and Heterogeneous mixtures are both mixtures but differ in that Hom0genous mixtures exist in one phase whereas Heterogeneous mixtures exist in more than one phase.

Mixtures are substances that are composed of two or more substances that are physically combined together.

The components of a mixture can easily be separated by physical methods based on differences in their physical properties.

Mixtures can be classified into two, namely:

Hom0genous mixtures are mixtures in which the constituents are uniformly distributed into a single phase. Examples of homogenous mixtures include a sugar solution and a salt solution.

Heterogeneous mixtures are mixtures in which the constituents are distributed in more than one phase. The several components of the mixture may be seen with the unaided eye.

Examples of heterogeneous mixtures include sand, iron filling, and salt mixture.

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Hydrogen bonds are formed between water molecules due to the difference in the charges of atoms of the water molecules.

Water is the universal solvent. It is because of its ability to form hydrogen bonds easily with majority of the substances, Thus water is a polar molecule. This means that one end of the water molecule is slightly positive while the other is slightly negative. The chemical formula of water is H₂O.

Hydrogen bonds are the ones that are formed between two atoms or ions that have a charge difference between them. These are most abundantly seen in water molecules because the oxygen atom of water is negatively charged whereas the hydrogen atom is positively charged.

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1. disease-causing agent are Pathogens

2. an animal or insect that is known to transmit a specific disease is a vector

3. white blood cells that eliminate the chances of infection is called Phagocytes

4. non-communicable; cannot be spread through casual contact are called non-infcetious.

What are diseases and infections?

Infection, often the first step, occurs when bacteria, viruses or other microbes that cause disease enter your body and begin to multiply. Disease occurs when the cells in your body are damaged — as a result of the infection — and signs and symptoms of an illness appear.

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Oceanic crust or a less solid piece of oceanic crust will subduct beneath continental crust. Earthquakes occur when the oceanic plate subducts into a trench. Volcanoes are created by the melting of mantle material.

The outermost part of the Earth's lithosphere, known as oceanic crust, is created at spreading centres on oceanic ridges that are found at divergent plate boundaries and is found beneath the oceans. The oceanic crust is roughly 4 miles (6 km) thick. Even without the sediment on top, it is made up of many layers.

Compared to continental crust, oceanic crust is both thinner and denser. This is because to the oceans' weight, which has compacted it beneath it. It is also much more recent than continental crust, typically existing within the last 200 million years.

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Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

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Carbohydrates are biomolecules composed of monosaccharides as subunits linked by glycosidic bonds, which are fundamental to providing energy to the organism.

Carbohydrates play fundamental roles mainly associated with the storage and use of energy. For example, simple carbohydrates such as glucose provide energy to be used in a fast manner, while complex carbohydrates play a role as storage of energy, which is stored in the chemical bonds.

Therefore, with this data, we can see that carbohydrates have fundamental roles associated with the storage of energy in order to be used when it is required.

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During the 1973 eruptions on the island of heimaey, residents used blank Pyroclastic materials to build barriers that diverted lava flows away from their economically important fishing port.

What are Pyroclastic materials?

Pyroclastic materials is another known name for vapor, lava fragments and clouds of ash carried through the air.  Movement of pyroclastic materials through the air is always rapidly and hot because vapor provides its buoyancy. Due to its general make-up and the rapid/hot movement, these materials are capable for destroying life and property within their paths and can extend miles away from the volcano.

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Answer:

Kinesthetic

Explanation:

Even with your eyes closed you can tell where your limbs are located and in which direction you are going, thanks to the kinesthetic nerve.

Answer:

B. Vestibular

Explanation:

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