Answer:
This indicates that extinctions can be both naturally-caused, such as by collapse in food chains due to a large meteorite striking the Earth, and human-caused, including habitat destruction, overharvesting, introductions of invasive species, climate change, and emerging diseases. Because much of the current environmental change caused by human activities is dramatic and sudden, many species may not be able to move or put in the time to avoid extinction. And, the recovery of biodiversity from previous mass extinctions took about 10 million years. The recovery from the present mass exitinction could take just as long-- 500,000 human generations.
Which statement is factual?
Asexual reproduction produces offspring that are identical to the parent.
Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
Asexual reproduction leads to the formation of haploid gametes.
Sexual reproduction does not require the production of gametes.
The statement that is factual is as follows: Asexual reproduction produces offspring that are identical to the parent (option A).
What is asexual reproduction?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)
If there is an if number of water molecules inside and outside the cell, how will the water move?
Responses
Out of the cell only
Out of the cell only
Into and out of the cell in equal amounts
Into and out of the cell in equal amounts, EndFragment,
It will not move
It will not move
Into the cell only
Into the cell only
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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treppe is the phenomenon that results in . treppe is the phenomenon that results in . a progressive increase in the force generated with repetitive stimulation maximal force production by a skeletal muscle motor unit recruitment an increase in the stimulation frequency
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
What is treppe?
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 action potential on the muscle cell leads to contraction due to the release of calcium ions. where are calcium ions stored in the muscle cell? view available hint(s)for part f the action potential on the muscle cell leads to contraction due to the release of calcium ions. where are calcium ions stored in the muscle cell? terminal cisterns (cisternae) of the sarcoplasmic reticulum cytosol sarcolemma t tubule
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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Scientists have produced a hybrid plant that was the result of the fertilization of gametes between one plant with a diploid number of 24 and another with a diploid number of 20. How many chromosomes would the diploid hybrid plant have?.
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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question 4, select all of the things that happened during the reign of terror
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.
What is reign of terror?Following the establishment of the First Republic, numerous mass killings and other atrocities occurred during the French Revolution's Reign of Terror. The Committee of Public Safety carried out public executions in response to revolutionary fervor, anti-clerical sentiment, and treason accusations.The Reign of Terror was a dark and bloody period during the French Revolution. During the revolution, radicals took control of the government. Anyone suspected of betraying the revolution was apprehended and executed. The French Revolution had officially begun four years prior with the storming of the Bastille.In the pursuit of freedom and liberty by French revolutionaries, the Reign of Terror demonstrated more brutal punishments for counter-revolutionaries and foreign enemies.To learn more about reign tower, refer to:
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1. How might Margaret Mead have been biased by her culture and experience when she examined the culture of the Samoans?
2. Do you think any human universals appear in all cultures? Can you think of any universal taboos?
3. One of the main criticisms of Mead was that she did not use "science" in her approach to the study of Samoan people and culture. While she is also criticized for not spending enough time in Samoa to make a proper assessment, she used observation methods to come to her conclusions. Assess how effective you think observation is to the study of anthropology. In the case of Margaret Mead, do you think her observations were correct? Why or why not?
4. Why do you think Mead's own sexuality and identity were discussed in the article?
5. How can a researcher eliminate their own bias and subjectivity when they observe another culture? Won’t they always interpret what they see through the lens of their own experience and culture? Explain your thinking.
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.
How might Margaret Mead have been biased by her culture and experience when she examined the culture of the Samoans?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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capillary sphincters are: a. capable of dilating in order to increase perfusion to crucial body organs. b. circular muscular walls that regulate blood flow through the capillaries. c. responsible for constricting to compensate for decreased cell perfusion. d. under complete control of the voluntary portion of the nervous system.
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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I need help with this active cell division problem! Will give brainilest!!
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.
What is cell division and its phases?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.
What is the importance of cell division?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?
2. The diagram shows water molecules as solid ice at 0°C and as a liquid at 25°C.
Ice
Liquid Water
(a) Describe why hydrogen bonds form between water molecules.
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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What is a substance that inhibits the growth of microorganisms on living tissue?.
how do we manage the saftey of our ecosystem ??
Answer:
By keeping habitat destruction a minimum
Explanation:
We can do this by reducing the poachers and animal habitat destruction throughout Earth.
PLSSS HELPP
True or False. Prokaryotic cells have a membrane bound nucleus for their genetic information.
Answer:
no please
Explanation:
prokaryotic cells do not have and nuclear bound membrane but have nuclear particles like 70s ribosomes
what are some signs of geothermal activity in a caldera ?
Vital signs of geothermal activity include volcanoes, hot springs and others
How volcanoes are signs of geothermal activitiesWhen 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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CREATE A short story about the Rise and Fall
(...and rise?) of an animal population that you can research online.
YOUR STORY MUST BE ORIGINAL AND SHOULD CONTAIN THE FOLLOWING ELEMENTS:
THE EFFECTS OF AT LEAST ONE (1) DENSITY - DEPENDENT LIMITING FACTOR
THE EFFECTS OF AT LEAST ONE (1) DENSITY - INDEPENDENT LIMITING FACTOR
THE BIOTIC POTENTIAL of your fictional population
POPULATION SIZE vs. CARRYING CAPACITY of your fictional ecosystem.
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
Pls help!!!!!!!!!!!!!!!!!!!
Which plant organ functions to obtain the water required for the process of photosynthesis?.
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 :)
The activation of additional motor units in order to produce a contraction with greater tension is known as ______.
The activation of additional motor units in order to produce a contraction with greater tension is known as motor unit recruitment.
What are motor units and what is motor unit recruitment?A motor neuron is a neuron basically a motor neuron and along with all skeletal muscle fibres through axon's terminal.Sometimes the body need to speed up the contractile property of the body or the contractile strength.Motor unit recruitment is one way through which the body can activate large number of motor units to accomplish the need.By increasing the motor units number the contractile strength would be increased and hence the property would be enhanced.Hence the activation of additional motor units in order to produce a contraction with greater tension is known as motor unit recruitment.To know more about motor unit recruitment visit:
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The __________ nerve connects with the auditory nerve to relay information to the brain about balance. a. cochlear b. vestibular c. optical d. kinesthetic please select the best answer from the choices provided a b c d
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:
edge 2022
Explain why a volcano is created when oceanic and continental crust collide. Makes sure you include what
happens to the oceanic crust. Draw a Model.
Please help asap
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.
What does oceanic crust mean?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.
What is a characteristic of oceanic crust?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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Description of carbohydrates and what is it purpose and importance
Carbohydrates are biomolecules composed of monosaccharides as subunits linked by glycosidic bonds, which are fundamental to providing energy to the organism.
What are the roles of Carbohydrates?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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Mixtures can be classified into hetergenous and homogenous mixtures. Create a venn diagram to compare and contrast the 2 types of mixtures. Use the pdf attach to this assignment to help you fill out the venn diagram.
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.
What are mixtures?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, andheterogeneous mixturesHom0genous 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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as carbon dioxide enters the ocean it: group of answer choices forms carbonic acid. bonds to water molecules to increase the salinity of the ocean is used by animals for respiration. becomes a product of photosynthesis.
As a consequence of photosynthesis and diffusion from the atmosphere, oxygen enters saltwater through the oxidation of metal ions.
Result?As a consequence of photosynthesis and diffusion from the atmosphere through animal respiration, decomposition of plant and animal remnants results.
How do CO2 and seawater interact?Answer options create carbonic acid as carbon dioxide reaches the ocean. Animals need this compound to breathe by forming chemical connections with water molecules to raise the ocean's salinity. is created during photosynthesis.
Seawater absorbs carbon dioxide, which is present naturally in the atmosphere. Carbonic acid (H2CO3) is created when water and carbon dioxide mix. This weak acid dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-).
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During the 1973 eruptions on the island of heimaey, residents used blank______ to build barriers that diverted lava flows away from their economically important fishing port.
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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The animal cell pictured above is a lymphocyte. Describe the features that suggest to you that:
(a) It has a role in producing and secreting proteins:
(b) it is metabolically very active:
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.
Leymphocyte?E proteins operate in the immune system by guiding and maintaining a huge transcriptional network that controls cell survival, proliferation, differentiation, and function.They are members of the basic helix-loop-helix (bHLH) family of transcription factors. The immune system's proper operation depends on the proper operation of this network.E proteins are members of the basic helix-loop-helix (bHLH) family of transcription factors and function in the immune system by directing and maintaining a large transcriptional network that controls cell survival, proliferation, differentiation, and function.Aberrations in E protein expression or function can result in a variety of defects, ranging from impaired lymphocyte development and immunodeficiency to aberrant function, cancer, and autoimmune disease.The immune system's proper operation depends on the proper operation of this network.To learn more about Leymphocyte refer to:
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If a blood cell is sitting in a hypertonic solution, what will happen to the cell?
A. Nothing will happen to the cell, it will stay the same
B. The cell will expand as water moves into the cell to try to balance the solute concentrations
C. The cell will shrink as water moves out of the cell to try to balance the solute concentrations
D. The cell will expand as salts move into it from the outside environment.
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 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 ____ and ____.
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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What does it mean when a planet is in a star's habitable zone?
A- It has oxygen in its atmosphere.
B-It has a day-night cycle and a seasonal cycle that resembles Earth's.
C-It has the right temperature to have liquid water.
D- it has signs of life
When a planet is in a star's habitable zone It has the right temperature to have liquid water.
The correct option is C.
Where is the habitable zone?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.
What is the Earth's 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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For certain breeds of cattle, a bull with solid red fur and a cow with solid white fur will make a roan calf that has both red and white hairs in its coat. What is this genetic inheritance pattern?.
Answer:
codominance :)
Explanation:
hope this helps
What mechanism of evolution would it be if the wider alligator tail was advantageous so that the alligator was a better
swimmer and able to live longer and have more offspring?
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.
Why does genetic variety happen? What does it entail?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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