What is the difference between cytokinesis in plant and animal cells?
What are the differences between plant and animal mitosis? The most observable difference is the way in which cytokinesis occurs. In plants a new cell wall is fashioned between the new daughter cells, while in animal cells the cell membrane constricts to pinch the parent cell into daughter cells.
In animal cells, cytokinesis occurs through cleavage furrow formation, while in plant cells, it involves the formation of a cell plate.
Explanation:In animal cells, cytokinesis occurs through the process of cleavage furrow formation. The plasma membrane of the parent cell pinches inward along the cell's equator until two daughter cells form. On the other hand, in plant cells, cytokinesis involves the formation of a cell plate along the equator of the parent cell. This cell plate eventually develops into a new cell wall that separates the two daughter cells.
Meiosis, Mitosis, or Both? “Required for survival”
Question 16 options:
Meiosis
Mitosis
Both
What are the answers?? I need help!!
A population of mammals originally lived in a certain area surrounded by land. Then, some of the organisms were taken to an island. These two populations remained separated for hundreds of years.
Which of the following is most likely true of the organisms within the populations?
A.
The organisms on the island are slightly different than those on the mainland.
B.
The organisms on the island are exactly the same as those on the mainland.
C.
The organisms on the island are no longer a mammalian species like those on the mainland.
D.
The organisms on the island are completely different than those on the mainland.
Final answer:
The organisms on the island are likely slightly different than the mainland population due to their isolation and unique evolutionary pressures, resulting in speciation and the development of endemic species. The most likely true statement regarding the organisms within the populations is: A. The organisms on the island are slightly different than those on the mainland.
Explanation:
The organisms on the island are most likely slightly different than those on the mainland. This phenomenon is consistent with the principles of island biogeography, where isolated populations experience different environmental pressures and evolutionary paths, resulting in speciation or the development of endemic species. This has been observed in examples across the world, such as the marsupials of Australia, the finches of the Galápagos Islands, and the diverse species of the Hawaiian Islands. These species began as similar to their mainland ancestors but evolved uniquely due to their isolated conditions. The concept of a mainland-island metapopulation suggests the mainland may act as a source for genetic diversity, while the island populations evolve independently. Over hundreds of years of separation, the organisms on the island likely adapted to new challenges, leading to slight differences as compared to their mainland counterparts.
The easiest way to recognize food contaminated with spoilage bacteria
either its gonna have mold or its going to smell bad
cross a plant that is heterozygous for green pods with a plant that has yellow pods
Using a Punnett square, crossing a heterozygous green pod plant (Gg) with a yellow pod plant (gg) will result in a 1:1 genotypic and phenotypic ratio of green to yellow pods due to the dominance of the green allele.
Explanation:When crossing a plant that is heterozygous for green pods (Gg) with a plant that has yellow pods (which is the recessive phenotype, so the genotype would be gg), we need to set up a Punnett square to predict the genotypes and phenotypes of the offspring. The parent with green pods has one allele for green (G) and one for yellow (g), while the yellow-podded plant has two alleles for yellow (gg).
The Punnett square will have two rows and two columns, with the alleles from one parent along the top and the alleles from the other parent along the side. After filling in the Punnett square, the expected genotypes for the offspring would be Gg and gg. This means that there will be a 1:1 ratio of heterozygous green pods to homozygous yellow pods in the offspring. Since green is the dominant trait, the phenotypic ratio will also be 1:1, showing an equal number of green and yellow pods.
which phase of mitotic division is the highlighted cell undergoing
The answer is the telophase.
In the given image, the marked portion shows a cell undergoing mitotic cell division and it is in the telophase of the division. In the telophase a complete set of identical chromosomes is reached at each pole of the cell. The spindle breaks down and disappear. The nuclear membrane starts to form around each set of daughter chromosomes.
The phase of mitotic division of a cell cannot be accurately determined without a visual or description. However, the phases of mitosis are Prophase, Metaphase, Anaphase, and Telophase.
Explanation:The highlighted cell's phase in mitotic division cannot be determined without an image or description. Nevertheless, the phases of mitotic division include: Prophase, Metaphase, Anaphase, and Telophase. Here's a brief overview of these phases:
Prophase: The chromosomes condense and the mitotic spindle forms. Metaphase: The chromosomes line up along the metaphase plate. Anaphase: Sister chromatids separate and are pulled towards opposite sides of the cell. Telophase: The nuclear envelope re-forms and the chromosomes decondense. Learn more about Mitotic Division here:
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the chemical composition of a star can be determined using a
Which Of The Following Most Accurately describe the result of cell division without differentiation?
Cell division without differentiation results in genetically identical cells without the acquisition of distinct functions. This occurs in early development but is insufficient for the growth and complexity needed in mature organisms. Differentiation is vital for cells to perform specialized roles within an organism.
Explanation:Result of Cell Division Without DifferentiationThe result of cell division without differentiation leads to the production of multiple cells that are genetically identical to the original cell and to each other. In the context of development, cell division without differentiation occurs during the early stages when a fertilized egg divides to form a multicellular organism of the same size as the original cell. This is because the original cell contains ample 'materials' for creating daughter cells without the need for growth. However, for further development, growth is essential as it allows for the accumulation of materials necessary for continued cell division. In more mature organisms, such as most plants and animals, cell division through mitosis results in differentiated cells that adopt specific functions within the organism.
During mitosis, a single cell goes through phases - prophase, metaphase, anaphase, and telophase, which are stages of division that end in cytokinesis. This leads to two identical daughter cells. However, differentiation is fundamental for the development of complex organisms from a fertilized egg to various specialized cell types, such as nerve cells, muscle cells, and epithelial cells. Without differentiation, the cells cannot perform distinct functions necessary for the organism’s survival.
Additional complexity in cell division includes the role of stem cells, which can divide indefinitely and, under specific conditions, differentiate into specialized cells. This shows the importance of both cell division and differentiation in the growth and development of multicellular organisms.
what system allows you to walk, talk and breathe.
The body system that allows a person to walk, talk, and breathe is the respiratory system. The respiratory system is composed of the airway, the lungs, and the muscles of the respiration. The respiratory system allows a person to taken in the air allowing him to breathe in the oxygen, and breathe out the carbon-dioxide. The ability to speak is also dependent on the breathing in of the air. The person can walk, or run, as a thanks to his respiratory system, which is constantly inhaling oxygen to provide him the energy.
Hence, the answer is 'respiratory system'.
A method by which plants are grow in solutions of nutrients instead of soil
This is the kingdom of heterotrophs that obtain energy and nutrients from dead and decaying organic matter.
Answer: fungi
Explanation:
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A person has developed a condition where his heart valves are damaged. Use complete sentences to explain the effects of such a condition on the circulatory system.
The man's heart valves are damaged, which increases the risk of the circulatory system becoming obstructed, slowed down, or stopping since the blood is less likely to reach the heart to also be cleaned and pumped back out into the body than it once was.
What is circulatory system?A human or other vertebrate's complete body is circulated by a system of organs called the blood circulatory system, which includes the heart, blood arteries, and blood itself. It contains the heart and blood vessels-based cardiovascular system, often known as the vascular system.
Via a system of arteries and veins, the heart circulates blood throughout the body (blood vessels). The cardiovascular system is another name for the circulatory system. Vascular relates to blood vessels, while cardio is the word for the heart. All of the body's tissues receive blood from the circulatory system so they can work.
Thus, the man's heart valves are damaged, which increases the risk of the circulatory system becoming obstructed, slowed down, or stopping since the blood is less likely to reach the heart to also be cleaned and pumped back out into the body than it once was.
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Please help me this is due today!
Describe the similarities and differences (compare and contrast) of the circulatory system of plants and animals.
Final answer:
Plant and animal circulatory systems both transport substances but differ in mechanisms; plants use passive transport, while animals have an active system with heart, blood, and vessels.
Explanation:
Similarities and Differences between Plant and Animal Circulatory Systems
Both plant and animal circulatory systems are crucial for the transportation of substances throughout the organism. In plants, this occurs through a system made up of xylem and phloem, which transport water and nutrients. In animals, the circulatory system is more complex and involves the heart, blood, and a network of blood vessels.
Similarities
Both systems serve to transport nutrients, water, and waste products.Both systems are essential for maintaining homeostasis within the organism.Differences
Plants use a passive transport system where water is moved via transpiration and nutrients via diffusion, while animals have an active circulatory system driven by the heart's pumping action.Animal circulatory systems can be either open or closed. In an open circulatory system, hemolymph bathes organs directly. In a closed circulatory system, blood is contained within vessels, and interstitial fluid bathes the cells.Plants do not have a central pump like the heart, nor do they have blood. Their circulatory system is not involved in gas exchange, which is done via stomata in leaves, whereas animals use their circulatory system for transporting gases like oxygen and carbon dioxide.The animal circulatory system is more complex and involves pulmonary circulation (carrying blood to the lungs to be oxygenated) and systemic circulation (delivering oxygen to the body).The circulatory system is a testament to the evolution and complexity of living organisms, reflecting the increased demands of multicellular life.
what limits the species of plants that can grow in an area
All plants need certain living conditions to prosper, so depending on what kind of conditions there are, depends on what kind of plant species will be in that area. The most important limiting factors for the plant species are the sunlight, temperature, water, and soil. If there are high temperatures, high amounts of precipitation, and lot of sunlight, we can expect tropical species of plants. If there are moderate amounts of precipitation, less intense sunlight, change of seasons, then it is the temperate species of plants that can be expected. If we have low and weak amount of sunlight, very low temperatures, and very low precipitation, then it will plant species of the tundra type that can be expected.
What is the main difference between a producer and a consumer? Give an example to support your answer
what is small bodies from which the planets formed
the study of living things and their environment is called
Answer: Ecology
Explanation: Ecology is a branch of biology which studies living things in relation with their environment. Ecology is the relationship between and among living organisms and their biophysical environment. Their biophysical environment may includes both biotic and abiotic components.
What is a mutation, and how does it relate to evolution?
Which three organ systems are directly interacting when a persons brain sends a signal to the persons arm, causing the arm to move up and down
which of the filling is a bacterial disease? a) flu b) cholera c) measles d)common cold
Is MRSA a eukaryotic or prokaryotic structure?
MRSA have prokaryotic structure
MRSA can also be refers to as methicillin resistant staphyloccous aureus and known to be strain of staphyloccous aureus. Also, they are characterized by their resistance to antibiotics methicillin. However, prokaryotic cell are known to be less complex cell with visible structure and they are also characterized by nucleus absent.
Which of these is a small, icy object that orbits the sun?
options: asteroid comet meteoroid star
A tiny, stony object that orbits the Sun is called an comet. Hence option 2 is correct.
What is asteroid?Asteroid is defined as a remains of our solar system's early development, which are stony, airless objects that date back around 4.6 billion years. There are 1,113,527 known asteroids as of right moment. Astrogeologists have estimated that 60 objects of a diameter of at least 5 km have struck the Earth within the previous 600 million years based on rates of crater creation found on the Moon, the Earth's closest celestial neighbor.
Comets are tiny, asymmetrical entities in the solar system that are mostly made of ice and dust. They are typically a few kilometers across. They orbit the sun on extremely elliptical paths that first take them past Neptune and then get them quite near to the Sun. The Sun is orbited by planets, dwarf planets, asteroids, and comets. These things don't produce any light. They instead reflect the sunlight.
Thus, a tiny, stony object that orbits the Sun is called an comet. Hence option 2 is correct.
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what are two sources of thermal energy in earth's interior?
The two principal sources of thermal energy in Earth's interior are radioactive decay of certain isotopes and residual heat left from Earth's formation. Both these sources help in keeping Earth's core extremely hot.
Explanation:The Earth's interior retains a massive amount of thermal energy that originates from two main sources, namely radioactive decay and residual heat from the Earth's formation.
Radioactive decay occurs when unstable isotopes (such as 238 U and 40 K) break down, releasing energy in the form of heat. Given the vast number of radioactive nuclei present within the Earth, this decay significantly contributes to the planet's internal energy.
The second source, residual heat, is left over from the Earth's formation approximately 4.5 billion years ago. This heat resulted from the conversion of kinetic and potential energy into thermal energy during Earth's initial formation process.
Both these sources contribute to keeping the Earth's core very hot - a reality that challenges traditional understanding of heat transfer, as our planet's interior has remained molten over a significantly long period.
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The two primary sources of thermal energy in Earth's interior are the residual heat from the planet's formation and the heat produced by the decay of radioactive elements like uranium-238 and potassium-40. This thermal energy is then transferred to Earth's surface mostly through convection.
Explanation:The Earth's interior contains a substantial amount of heat, or thermal energy. The two primary sources of this heat are from 1) the residual heat from the planet's formation and 2) heat produced by the decay of radioactive elements.
When the Earth was in the process of forming, approximately 4.5 billion years ago, kinetic energy from colliding particles was converted into heat. While most of this original heat energy has since been lost to space, a significant portion remains in the planet's interior. This is known as the residual heat.
The second major source of heat in the Earth's interior is due to the decay of radioactive elements like uranium-238 and potassium-40. As these elements break down, or decay, they release heat. Given the extensive length of these elements' half-lives, this process continues to generate a significant amount of heat within the Earth's interior.
The thermal energy generated from these sources is then transferred to the Earth's surface mainly through convection, a process by which warmer, less dense materials rise and cooler, denser materials sink. This process can be seen in the movement of tectonic plates and volcanic activity.
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Which is a correct statement about vascular plant
Please help me!
Based on the model...
a. This is an illustration of a(n) __________ factor.
b. The biotic and abiotic factors share a(n) ___________.
In what times of year are tropical cyclones most likely to form? A. Summer and fall B. Spring and summer C. Winter and spring D. Fall and winter
Answer:
B.
Explanation:
In spring and summer where storms are more present and frequent. During summer, there is more moisture in the air (since more water evaporates during summers heat), an important ingredient for storm-formation.
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BiologiaMagister
Earth’s energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal energy source for generating most of your home’s electricity, and explain why you chose that source.
which base has the smallest base dissociation constant
Explain why bone marrow can be called tissue
Answer:
Bone marrow can be called tissue because it is a complex and organized structure composed of multiple cell types and extracellular components that work together to perform specific functions.
Explanation:
Bone marrow is considered tissue because it possesses the characteristics of organization, specialized functions, cellular composition, and extracellular components that define tissues in the human body. It plays a vital role in blood cell production and is a structured and organized part of the body's anatomy.