Answer: The most important and observable difference in the plant animal cells mitosis is the cytokinesis.
Explanation: The most important and observable difference in the plant animal cells mitosis is the cytokinesis. In plants a new cell plate is formed between the daughter cells for the future cell wall, while in animal cells the cell membrane constricts to separates the parent cell into daughter cells.on:
A student wants to compare the amounts of CO2 given off by yeast provided
with different amounts of sugar. The student places a balloon over each
container to catch the released CO2. How can the student make quantitative
observations of the CO2 collected in the balloons?
D
Final answer:
To quantitatively observe [tex]CO_2[/tex] collected in balloons, the student can measure the balloon circumference, use a gas pressure sensor, employ a water displacement technique, or weigh the setup to determine mass loss due to gas production.
Explanation:
To make quantitative observations of the [tex]CO_2[/tex] collected in the balloons in an experiment where yeast is provided with different amounts of sugar, the student could use several methods:
Measure the circumference or diameter of the balloon. As more [tex]CO_2[/tex] is produced, the balloon will inflate, and this can be quantified.Use a gas pressure sensor to measure the pressure inside the balloon. This will give a direct measurement of the amount of gas produced.Employ a water displacement method, where the balloon is connected to an inverted measuring cylinder submerged in water, and the amount of water displaced is equivalent to the volume of [tex]CO_2[/tex] produced.Alternatively, after the reaction, weigh the entire setup and calculate the mass loss, which will correlate to the amount of [tex]CO_2[/tex] generated.Remember that the student should ensure that other variables are controlled so that differences in [tex]CO_2[/tex] production are due to the amount of sugar provided and not other factors.
The skin MAINLY protects the body against infection by
Question 21 options:
producing antibodies.
serving as a barrier.
stimulating mast cells.
secreting sweat.
I need help now ill do brainiest or anything please
Answer:
serving as a barrier.
Explanation:
Which of these structures a
mese structures are found in plant cells but not in animal cells?
Answer: Cell wall and chloroplasts
Explanation:
Which of the following is the best explanation for the presence of light -colored lizards in the white sands region of New Mexico ,when darker lizards in surrounding areas
Light-colored lizards in New Mexico's white sands region likely have evolved camouflage coloration to avoid predators, a process driven by natural selection that favors lizards whose coloration blends into their environment.
Explanation:The presence of light-colored lizards in the white sands region of New Mexico while darker lizards populate surrounding areas can likely be explained through the concept of camouflage as an adaptive feature for survival. These lizards have likely evolved coloration that allows them to blend into their specific environments to avoid predation. In regions with white sands, lighter coloration makes the lizards less visible to predators, enhancing their chances of survival. On the other hand, darker lizards in areas with darker soils and rocks would similarly benefit from a coloration that blends in with their surroundings, as their coloration also acts as camouflage. This adaptation process is driven by natural selection, where individuals that are better able to avoid predators because of their coloration are more likely to survive and reproduce.
Question 7 of 10
2 Points
Which of these makes surface mining less risky than underground mining?
O
A. Tunnels in surface mines can collapse and trap miners.
B. Surface miners work aboveground in the open air.
O
C. Open pits at surface mines replace biological communities.
O
D. Surface miners work in dusty, enclosed areas.
SUBMIT
Underground mining is cost effective and consumes more time and energy than surface mining for mining coal from the underground.
Destruction and damages of land surfaces are caused due to underground mining that changes the form and topography of the land.
More possibilities for fatal accidents, flooding from groundwater or sea water, methane gas explosions, failure of air ventilation machines are there in underground mining, compared to Surface mining.
Underground mining requires proper ventilation and insecure to workers than surface mining.
Answer:
Surface miners work aboveground in the open air.
Explanation:
What is the relationship between Temperature in urchin survival
Sea urchin embryo requires temperature of 23 degrees to cleave, in lower temperatures the embryo cleavage slows down.
Explanation:
Although the sea urchins live in sea water in cold temperature, they require a temperature of around 23 degrees to cleave for fertilisation if this temperature is reduced the process of cleavage slows down eventually depleting the urchin population.
Temperature affects urchin survival through its influence on metabolic processes and how body size affects heat retention and loss. They must inhabit an environment that maintains their body within a temperature range supporting their metabolism.
Explanation:The relationship between temperature and urchin survival relates closely to the physiology of the urchins and the role temperature plays in their metabolic processes. Temperature exerts an important influence on living things, including urchins, because from a metabolic standpoint, few organisms can survive at extreme temperatures. Enzymes within these organisms, crucial for metabolic processes, operate efficiently within a specifically narrow temperature range and can degrade at higher temperatures. More geographically, temperature also varies by latitude and body size also plays a key role in urchins as it affects heat retention and loss. Smaller organisms often lose heat at a faster rate because they have a greater surface area relative to their mass.
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Which is an advantage of sexual reproduction over asexual reproduction?
Answer:
in sexual reproduction we get genes from both our parents and we have a combination of them...that leads to genetic diversity...more diversity means more chances to survive different environment conditions.... in asexual reproduction.. offsprings are identical.if environment conditions are rough...all of them won't stand a chance...and also....in sexual reproduction genetic variation can lead to evolutionary advancements
How are island archipelagos also called island arcs formed.
Answer:
Island archipelagos are called island group is a chain or cluster or collection of islands.
Explanation:
Archipelago is derived from Greek Word that means chief sea.
It is isolate and contain large amount of water or large land mass
Ex-Scotland has 700 islands that is surrounding the mainland which form an archipelago.
Answer:
When two oceanic plates converge, one of the plates sinks underneath the other and forms a deep depression called ocean trench. The plate sinks further down into the mantle and begins to melt. The molten rock (magma) rises toward the surface from the melting plate forming a chain of volcanic islands (island arcs) behind the ocean trench.
Explanation:
The Earth's crust is divided into several hard and rigid tectonic plates that slide over the mantle. Tectonic plates can interact in three different ways: converge (move toward one another), diverge (move away from one another) or transform (slide past one another). The plate margins are the boundaries where plates meet and they are of three kinds: oceanic-oceanic, continental-continental, and continental-oceanic.
When two oceanic plates converge, one of the plates sinks underneath the other and forms a deep depression called ocean trench. The plate sinks further down into the mantle and begins to melt. The molten rock (magma) rises toward the surface from the melting plate forming a chain of volcanic islands (island arcs) behind the ocean trench.
An island arc comprises a curving series or group of volcanic islands that form near the convergent boundary of two tectonic plates. They are formed from the volcanic activity along a subduction zone, where one oceanic tectonic plate subducts (one plate sinks under another plate into the mantle of the Earth) another oceanic plate. This movement pushes the lower plate further deeper to a point where the temperature is sufficient to melt the subducted plate and results in the production of magma directly below the top tectonic plate. This magma then rises through fractures and reaches the upper crust and forms volcanoes which eventually rise high enough to become islands. The islands of Japan, the Aleutian Islands, etc are examples of island arcs.
When two continental plates converge, they collide and compress to create complex mountain ranges having great height. The Himalayas formed by the collision of the Indian-Australian plate and the Eurasian plate is an example.
During the convergence of continental and oceanic plates, the denser oceanic plate sinks below the continental plate and a chain of volcanoes known as a volcanic arc are formed. The examples of volcanic arcs are the Cascade Mountains of North America and the Andes Mountains of South America.
In what type of ecosystem can this population be found?
I chose Biome to be desert and Organism to be armadillo. Plz help I don’t get what they are asking me!
Answer:
Armadillo is the barrel-shaped animal that lives mostly in hot and warm areas like: rain forests, grasslands, and semi-deserts.
Explanation:
Biome is the habitat where the organisms live. As we know different organisms have different comfort zone of temperature, environment etc. for living.So some live in the cold polar areas where some in the hot desserts.Similarly, Armadillo is an organism that has adopted itself to live in the warm areas of rain forests and semi desserts.Armadillo is commonly found in the grasslands of Central America.PLEASE HELP
From your knowledge about the distribution of electrons in their shells and from the atomic number (in parentheses), indicate the most likely charge on the ion when this atom forms an ion. (Remember the 2-8-18 shell distribution.)
Oxygen (8)
+1
+2
-2
-1
Answer:
The correct option is -2.
Explanation:
Oxygen atom will have two electrons in its first shell and six electrons in its outermost, valence shell. To become stable, an oxygen atom will need to gain two electrons so that it has 8 electrons in its outermost, valence shell. When oxygen will gain two electrons from another atom, it will get a charge of -2. This is because it has acquired two more negative charged electrons. Hence, the correct option is -2.
Answer:
-2
Explanation:
What is natural selection?
a process that selects variations that help with survival and that spreads the variations to more offspring
a process through which nature selects an individual within a population for extinction
a process that causes all populations to gradually increase in size
a process that causes random variations to appear in the offspring of every generation
Answer:
The answer to this question should be the first option. A process that selects variations that help with survival and that spreads the variations to more offspring
Answer:
The correct answer is a process that selects variations that help with survival and that spreads the variations to more offspring.
Explanation:
Natural selection is a phenomenon proposed by Charles Darwin 140 years ago. From its definition the theory of evolution is born.
This process occurs between entities with variation, inheritance and multiplication and the different evolutionary formations that give way to new species through survival and reproduction.
In summary, natural selection is the process of formation of living beings so that they can survive and develop.
What molecule is used to cut out a section of DNA?
Answer: restriction endonuclease.
Explanation: restriction endonuclease recognize a specific site at a DNA molecule called restriction site and attach to it and cleave DNA into pieces by the cleavage of phosphodiester bond. Restriction site are few nucleotides in length found in the middle of the polynucleotide chain.
Which describes a population depending on an abiotic factor?
Final answer:
A population's dependence on an abiotic factor is illustrated by how non-living environmental elements like temperature and water influence the living organisms of an area. Ecologists use tools like demography to understand population dynamics and the balance of ecosystems. Abiotic factors are central to defining the characteristics and inhabitants of a biome.
Explanation:
Describing a population depending on an abiotic factor involves understanding how non-living elements of the environment, such as temperature, water, and sunlight, affect the organisms living within a particular area. A key example is how the amount of rainfall and temperature can influence soil quality, which in turn affects the types of plants that can thrive in an ecosystem. This subsequently determines the types of animals that inhabit the area since they depend on the plants for food, shelter, and breeding grounds.
To study these interactions, ecologists apply statistical tools like demography. They explore how population dynamics are influenced by both biotic and abiotic factors, which includes analyzing how various reproductive strategies impact the long-term viability of a population. This multi-faceted approach helps ecologists understand the complex web of dependencies in natural ecosystems.
The interplay between abiotic factors and biotic components defines the structure and character of a biome. For instance, in aquatic ecosystems, abiotic factors such as salinity, light penetration, and water temperature are crucial in determining which species can survive and flourish. All these components form the intricate mosaic of interactions that dictate life in various habitats.
A test tube fell on the floor and broke! What would you do? Check all that apply.
Call 911.
Using your hands, carefully pick up the broken test tube and dispose of the broken glass appropriately.
Tell your teacher right away.
Try to recover the mystery food solution from the broken pieces so you can continue to test it.
Answer:
tell the teacher right away!!
Answer:
using hands CAREFULLY pick up broken pieces
tell teacher right away
what are some activities that cells engage in that require energy
Answer:
Activities like cell division, photosynthesis, active transport, transmission of nerve impulses etc. needs energy.
Explanation:
Energy is the basic element that makes the cellular processes in our body to occur.These energy required is released from food and storing it as ATP.The process of cell division is a continuous and important one which requires energy for its continuation. Similarly other activities of cell that provides us different functionability of our body parts requires energy as well.22. Where are most mountains on Earth formed?
A. at volcanic chains
B. at strike slip faults
C. at mid-ocean ridges
D. at convergent plate boundaries
D.
Most mountains on Earth are formed at convergent plate boundaries
Explanation:
At the convergent boundary, the denser plate (usually an oceanic plate) gets subsided under the less dense plate (usually the continental plate). The stress in the boundary from the colliding tectonic plates causes fissures to develop along the boundary, in the overlying plate. As the denser plate ‘dives’ into the mantle, it melts and this magma rises, with pressure, along the fissures, and explodes violently on the surface forming volcanic arc geographical features.
An example f such a region is the Ring of Fire that is home to mountain ranges like the Andes in South America, Southern Alps of New Zealand, and the Cascade Range of North America.
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Most mountains on Earth are formed at convergent plate boundaries. The correct option is D, at convergent plate boundaries.
Convergent plate boundaries occur when two tectonic plates collide or move toward each other.
There are three main types of convergent plate boundaries:
Oceanic-continental convergence: When an oceanic plate collides with a continental plate, the denser oceanic plate is subducted beneath the continental plate. This subduction process leads to the formation of mountain ranges known as volcanic arcs. Oceanic-oceanic convergence: When two oceanic plates collide, one plate is usually subducted beneath the other, forming a trench. As the subducted plate sinks into the mantle, it can generate volcanic activity, giving rise to island arcs and associated mountain chains. Continental-continental convergence: The collision causes the crust to crumple, resulting in the formation of large mountain ranges. The Himalayas, the Alps, and the Rocky Mountains are some examples.Therefore, the correct option is D.
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The process of plant respiration
A.
uses all the energy released during photosynthesis.
B.
releases energy that plants can use for life processes.
C.
releases oxygen to Earth's atmosphere.
D.
produces food that plants need for photosynthesis.
Answer:
C
Explanation:
Answer:
B
releases energy that plants can use for life processes.
Explanation:
it is correct on study island
HELP MEEEEE it’s due today
Answer
During osmosis, solvent particles move from an area of higher concentration to an area of lower concentration. When there is higher concentration of solvent particles inside the cell, most solvent particles will move out of the cell and the cell will shrink. When there is higher concentration of solvent particles outside the cell, most solvent particles will move in the cell and the cell will become turgid.
Explanation:
Osmosis can be described as the process by which water molecules move along a concentration gradient form an area of higher concentration to an area of lower concentration. When water molecules move out of the cell, the cell will shrink. When the water molecules move inside the cell, the cell will gown and become turgid. Osmosis is a kind of passive transport.
which disorder is.m created as a result of the final chromosomal change that is shown?
Answer:Down syndrome
Explanation:
Numerical disorders occur when there is a change in the number of chromosomes (more or fewer than 46). Examples of numerical disorders include trisomy, monosomy and triploidy. Probably one of the most well-known numerical disorders is Down syndrome (trisomy 21)
what organ is responsible for secreting the parathyroid hormone to get the body back to homeostasis?
Answer:
The organ is responsible for secreting the parathyroid hormone to get the body back to homeostasis is parathyroid glands .
Explanation:
These parathyroid glands that are responsible for secreting the parathyroid hormones are smaller glands that are situated in the front of the neck. This parathyroid hormone is vital for maintaining and controlling the levels of calcium in the our body. This parathyroid glands some times secretes too high or too low hormone leading to hyperthyroidism and hypothyroidism. The hyperthyroidism is a state when large amount of hormone is secreted than required. Conversely hypothyroidism, occurs when the less amount of hormone is released.
The parathyroid glands are responsible for secreting the parathyroid hormone (PTH) to get the body back to homeostasis by increasing blood calcium concentrations.
Explanation:The organ responsible for secreting the parathyroid hormone (PTH) to get the body back to homeostasis is the parathyroid glands. The parathyroid glands produce and secrete PTH in response to low blood calcium levels. PTH increases blood calcium concentrations through various mechanisms, including enhancing reabsorption of calcium by the kidneys, stimulating osteoclast activity, and stimulating the production of calcitriol to enhance absorption of dietary calcium by the intestines.
Bones: PTH stimulates the release of calcium from bones, where it is stored. This process, called bone resorption, increases the amount of calcium in the bloodstream.
Kidneys: PTH promotes the reabsorption of calcium from the urine back into the bloodstream. It also decreases the reabsorption of phosphate in the kidneys, indirectly increasing calcium levels.
Intestines: PTH indirectly enhances the absorption of calcium from the intestines, primarily through its effects on vitamin D metabolism.
By orchestrating these actions, PTH helps to regulate blood calcium concentrations, which is crucial for various physiological functions, including muscle function, nerve signaling, blood clotting, and bone health. This demonstrates the importance of the parathyroid glands and PTH in maintaining calcium homeostasis in the body.
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Help pls Farming is one example of a human activity that has changed the environment.
Which is the NOT a reason farming has hurt the environment?
It uses large amounts of fresh water
It increased the availability of food for humans
It destroys habitats of many soecies
It contributes to soil erosion and desert formation
Farming increased the availability of food for humans is NOT a reason farming has hurt the environment.
Explanation:
Farming requires the tillage of land and therefore loosens the soil such that it is easily carried by agents of soil erosion – like wind and water.
In addition, most farming methods practice monoculture hence reducing the biodiversity of ecosystems in the region. Poor biodiversity leads to loss of species and low capacity to adapt to environmental changes/.
Farming also requires water to water the plants. This water is usually sourced from freshwater bodies like rivers and lakes. Often, this water is overdrawn leading to depletion of water to the environment denying other species their share of water.
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Through which microscope were cells first observed.
Answer:
Through "Compound microscope" cells were first observed.
Explanation:
Robert Hooke used compound microscope to detect the cork cell which laid to the basis for detection of the cell in 1665. The microscope was planned by him to detect a part of cork where he visualized tiny elements fixed combinedly and he called those elements as “cell”. He didn’t realize a little organelles within the cell as he detected the lifeless plant cell with cell walls which look like minor chamber. The compound microscope is used to assess the magnified pictures of the model existing in the glass slide and the magnification power used by Robert Hooke is 50X. The tests and explanations ended using numerous lenses were logged in his book called "Micrographia" or some Physiological Descriptions of Minute Bodies completed by Magnifying Glasses with Explanations and Inquiries Thereupon. "The cell is the structural and functional unit of an organism where plants and animal cells contain different cellular organelles with specific function."
Compound microscope was first used to observe cells.
Explanation:
In 1965, Robert Hooke observed a slice of cork under a compound microscope and saw the compartments in it. He named these compartments as cell.
The compound microscope has a high magnification power. It uses two convex lenses of short focal length. These lenses are objective lenses and eyepiece. It has resolution of 10X, 40X to obtain a magnified image of tiny entities like cell.
describe how gametogenesis in egg cells is different that that of sperm cells
Answer:
Gametogenesis is the process where a haploid cell is formed from diploid cell. Gametogenesis in male is called Spermatogenesis and gametogenesis in female is called as Oogenesis
Explanation:
⇒The process through which mature sperm or spermatozoa is produced is called as Spermatogenesis and the process through which mature ova or egg is formed is called as Oogenesis.
⇒Spermatogenesis takes approximately 70 days whereas Oogenesis begins prior to birth that is during the foetus period.
⇒Spermatogenesis contain different stages like- Primay spermatocyte, secondary spermatocyte, spermatid and spermatozoa whereas, Oogenesis contain Primary oocyte, Secondary oocyte &first polar body, mature ovum and second polar body.
Today, cells are classified in two groups according to whether they contain membrane - bound
Final answer:
Cells are classified based on whether they have a membrane-bound nucleus into prokaryotic and eukaryotic cells in Biology.
Explanation:
The subject of this question is Biology. The student is asking about the classification of cells based on whether they contain membrane-bound nuclei.
Based on whether they have a nucleus, there are two basic types of cells: prokaryotic cells and eukaryotic cells. Prokaryotic cells do not have a membrane-bound nucleus, while eukaryotic cells do have a membrane-bound nucleus.
For example, animal cells, plant cells, fungal cells, and protist cells are classified as eukaryotic cells, while bacterial cells are classified as prokaryotic cells.
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Please respond fast in less than 5 minutes!!!
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Answer:the first on is a convergent boundary and the second also looks like a convergent boundary
Explanation:
A diagram that shows the energy in each trophic level of an ecosystem is called______
A. an ecological pyramid
B. a food web
C. a food chain
D. a numbers pyramid
A diagram that shows the energy in each trophic level of an ecosystem is called an ecological pyramid, hence option A is correct.
What is an ecological pyramid?The ecological pyramid is the diagram that states the amount of energy within each tropic level of the ecosystem in a food chain and food web.
It defines as the interaction of the energy between the organism and the presence of the energy and matter within them. At the base of this pyramid producer is placed and at the top of the pyramid tertiary consumer is placed.
The energy flow follows the 10% rule through which energy is get reduced by 10 at each tropic level from the Sun to the consumers, if the producer has 10,000 kcal energy, the primary consumer has only 10,00 kcal energy.
Therefore, an ecological pyramid is a diagram that shows the energy.
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a solution of ph6 contains __________ h+ than the same amount of a solution of ph8
Answer:
A solution at pH 6 contains 100 times more H+ than the same amount of solution at pH 8.
Explanation:
pH of a substance determines the hydrogen ion concentration of a solution. Acidic solution tend to have a higher concentration of H+ ions as compared to that of water. They have a concentration greater than 1 × 10^{-7} M. Basic solutions have lesser concentration of H+ ions as compared to that of water. They have a concentration lesser than 1 × 10^{-7} M. A solution from pH range 1 to 6 will be acidic. A solution from pH rage 8-10 will be basic.
Before the three-dimensional structure of DNA was discovered, scientists knew that DNA contained nitrogenous bases. The table below shows the percentages of the nitrogenous bases in a DNA sample. Which rule can be used to determine the percentages of the missing nitrogenous bases? Complete the table AND explain your answer.
Chargaff's rule will be applied to know the percentage of missing bases.
The table is filled and shown in attachment.
Explanation:
According to the Chargaff's rule, the base pairs of pyrimidine and purine should have the ratio of 1:1.
It is based on the principle that Guanine bonds with Cytosine should be in equal concentration while Adenine bonds with thymine should be in equal concentration. Chargaff rule applies to the DNA only.
Final answer:
Chargaff's rules can be used to determine the percentages of the missing nitrogenous bases in DNA. According to these rules, the concentration of adenine is always about the same as the concentration of thymine, and the same is true for guanine and cytosine. If the percentage of thymine is known, the percentages of adenine, guanine, and cytosine can be calculated accordingly.
Explanation:
Chargaff's rules can be used to determine the percentages of the missing nitrogenous bases in the DNA sample. According to Chargaff's rules, within each species, the concentration of adenine (A) is always about the same as the concentration of thymine (T), and the same is true for the concentrations of guanine (G) and cytosine (C). Therefore, in the given DNA sample, since the percentage of thymine is 22%, the percentage of adenine will also be 22%. Additionally, since adenine and thymine always pair up, the sum of their percentages will be 44%. Similarly, the sum of the percentages of guanine and cytosine will also be 44%, and since the percentages of all the nitrogenous bases should add up to 100%, the percentages of guanine and cytosine will be 56%/2, which is 28% each.
Cell theory states that all living things contain one or more cells. Why do you think cell theory meets the definition of
a scientific theory? Do you think it should be a scientific law? Explain your response.
Answer:
The correct answer is "yes it satisfies the definition of the scientific law"
Explanation:
The scientific theory states the verified explanation of the natural world. This things or the experiments can be determined by repeatedly testing by the given scientific methods. The cell theory also meets the definition of the very known scientific theory as it has also helped in determining it by various experiments as well as the observations. The cell can be studied under the microscope by the basic staining procedures that has already been mentioned in the theory.
Answer:
Cell theory meets the definition of a theory because it has been tested over a long period of time, and scientists have plenty of evidence to support this theory. However, it doesn’t seem to meet the criterion of a scientific law. Scientists only know about life on this planet, so the theory may not be universal if life is found on other planets. In addition, scientists don’t have much data on the earliest forms of life on Earth.
Explanation:
What does an antibiotic do exactly
Answer:
antibiotics tend to reduce/stop pain for a while but the bacteria/ virus may eventually be resistant to it
Explanation:
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