The pH scale measures the acidity or basicity of any solution under optimum conditions.
What is pH?pH may be defined as a figure that estimates the acidity or alkalinity of a solution on a logarithmic scale.
On the pH scale, the number 0 to 6 represents the acidity of the solution, 8 to 14 represents the basicity of the solution and the number 7 is the neutral one.
Therefore, it is well described above.
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Hey guys . help.me with this question.
ANYONE HERE good in biology ..
ROLE OF BIOMOLECULES IN BIOSYSTEM
Answer:
Carbohydrates and proteins are bio molecules which are very important for our body. These bio molecules are used for the production of energy. These macromolecules are large in size which can not be used by our body so it can be broken down into simpler substances by the action of enzyme. Carbohydrate is broken down by Amylase enzyme into glucose molecule while protein is broken down by pepsin into amino acids. These glucose and amino acids are absorbed by the cell.
Which of the following would be used to show the order that specific traits evolved in a group of organisms?
Binomial nomenclature
Branching tree diagram
Six kingdom classification
Taxonomic key
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Answer: branching tree diagram
Explanation:
Answer:
I'm answering so the other
Explanation:
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How many chromosomes are in a skin cell if a stomach cell has 40 chromosomes?
Answer:
there is 30,000 chromosomes in the human body
Explanation:
How does a glacier move?
Answer:
gravity
Explanation:
Gravity is the cause of glacier motion; the ice slowly flows and changes in response to gravity. A glacier molds itself to the land and also molds the land as it creeps down the valley. Many glaciers slide on their beds, which enables them to move faster.
Lynn has a degree in chemistry and biology. What company in the agriculture, food, and natural resource cluster might be interested in lynn?
A) A pest control company looking for a technician
B) A seed research lab looking for a janitor
C) A farm looking for a pilot to dust crops
D) A large horse stable looking for a veterinarian
Answer:
A) A pest control company looking for a technician
Explanation:
Some of the duties of a pest control technician are:
identify potential pests (biology) exterminating pests by spraying chemicals (chemistry) know about pesticide use fumigation, and safety (chemistry).A person with a joint degree in chemistry and biology would have the skills to do the job.
B) is wrong. A janitor doesn’t need much knowledge of biology and chemistry.
C) and D) are wrong. A knowledge of biology and chemistry doesn’t give a person the skills of a pilot or a veterinarian.
according to the most recent science,if everyone where to live in california,carrying a capacity of planet eart is appromixatley?
Answer:
Earth's capacity
Many scientists think Earth has a maximum carrying capacity of 9 billion to 10 billion people. [How Do You Count 7 Billion People?]
One such scientist, the eminent Harvard University sociobiologist Edward O. Wilson, bases his estimate on calculations of the Earth's available resources. As Wilson pointed out in his book "The Future of Life" (Knopf, 2002), "The constraints of the biosphere are fixed."
Aside from the limited availability of freshwater, there are indeed constraints on the amount of food that Earth can produce, just as Malthus argued more than 200 years ago. Even in the case of maximum efficiency, in which all the grains grown are dedicated to feeding humans (instead of livestock, which is an inefficient way to convert plant energy into food energy), there's still a limit to how far the available quantities can stretch. "If everyone agreed to become vegetarian, leaving little or nothing for livestock, the present 1.4 billion hectares of arable land (3.5 billion acres) would support about 10 billion people," Wilson wrote.
The 3.5 billion acres would produce approximately 2 billion tons of grains annually, he explained. That's enough to feed 10 billion vegetarians, but would only feed 2.5 billion U.S. omnivores, because so much vegetation is dedicated to livestock and poultry in the United States.
So 10 billion people is the uppermost population limit where food is concerned. Because it's extremely unlikely that everyone will agree to stop eating meat, Wilson thinks the maximum carrying capacity of the Earth based on food resources will most likely fall short of 10 billion. [When Will Earth Run Out of Food?]
According to population biologist Joel Cohen of Columbia University, other environmental factors that limit the Earth's carrying capacity are the nitrogen cycle, available quantities of phosphorus, and atmospheric carbon concentrations, but there is a great amount of uncertainty in the impact of all of these factors. "In truth, no one knows when or at what level peak population will be reached," Cohen told Life's Little Mysteries.
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Which statements explain what the fossil record indicates? Check all hay that apply
Answer:
Earth is 4.5 billion years old.
Many organisms have become extinct.
Mass extinctions have occurred several times on Earth.
Explanation:
Where is most of Earth's carbon stored? How much of it is stored there?
Answer:
Largest amount of carbon on Earth is stored in sedimentary rocks within the planet's crust.
Explanation:
The majority of Earth's carbon is held in rocks and sediment under the surface, totaling around 100,000,000 gigatons. A small portion of this is in the form of fossil fuels.
Explanation:Most of Earth's carbon is stored in the rocks and sediment under the surface of the Earth. These formations contain around 100,000,000 gigatons of carbon, which is significantly more than the amount stored in the biosphere and the atmosphere. Of this, a rather small portion of the carbon is stored in the form of oil, gas, and coal. These fossil fuels are a highly concentrated and influential source of carbon and play a significant role in the carbon cycle due to human activity.
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The main result of respiration is the
(a) conversion of light energy into chemical
energy
(b) building of muscles
(C) storage of energy
(d) production of energy from the breakdown
of food
Answer:
(d) production of energy from the breakdown
of food
Explanation:
Cellular respiration makes ATP energy. (Adenosine Triphosphate)
The function of the Golgi apparatus is to ?
Answer:
Explanation:
Nicknamed the "post office" of a cell Golgi bodies receive proteins from ribosomes and they package these proteins into bundles to either store them in vesicles or take them out of the cell.
What happens in chemosynthesis
Answer:
drives energy from the inorganic chemicals, in the absence of solar light.
Explanation:
Chemosynthesis is an important process that some organisms use to get energy for the production of food. ... Instead, this energy comes from the reaction of inorganic chemicals that many of these organisms find in their environment. (Image Credit: teara.govt.nz) This process mostly occurs in bacteria
Answer:
Chemosynthesis is a biological process that takes place in some bacteria and derives energy from the inorganic chemicals, in the absence of solar light. It involves oxidation of inorganic molecules to make organic molecules, such as glucose.
Red blood cells that are bathed in blood neither shrink nor swell and burst. If the concentration of blood is 0.5 m, what could be the concentration of the cytoplasm of red blood cells
Answer: The concentration of the cytoplasm of red blood cells will be 0.5m.
Explanation: Red blood cells that are bathed in blood neither shrink nor swell and burst because the concentration of the surrounding blood is equal to the concentration inside the cytoplasm of the red blood cells. This means that the two solutions are isotonic. Since the two solutions are isotonic, there will not be movement of water molecules across the red blood cell membrane. Osmosis do not occur between two solutions of equal concentration, for osmosis to occur water molecules must move from a region of high water concentration to a region of low water concentration through a selectively permeable membrane.
Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to Canadian breeding grounds in the spring. As global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. Warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources.
Answer:
Populations will decline.
Explanation:
Since individuals will be less likely to successfully reproduce, and because they will not be able to breed with other birds on the breeding grounds.
Hopefully this helps :)
Answer:
C.
Populations will decline since individuals will be less likely to successfully reproduce.
Explanation:
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In some conditions caused by mutations, it is beneficial for an individual to be a carrier of the disorder, and not have the full homozygous condition. This is known as fitness. sickle cell trait. heterozygote advantage. homozygote advantage.
Answer:
Explanation:
A heterozygote advantage describes the case in which the heterozygous genotype has a higher relative fitness than either the homozygous dominant or homozygous recessive genotype. The specific case of heterozygote advantage due to a single locus is known as overdominance. Overdominance is a condition in genetics where the phenotype of the heterozygote lies outside of the phenotypical range of both homozygote parents, and heterozygous individuals have a higher fitness than homozygous individuals.
If 48 g of magnesium reacts with oxygen gas, how many grams of magnesium oxide will be
formed according to the following equation?
2 Mg + O2 → 2 Mgo
79.391 grams of MgO is formed when 48 gms of magnesium reacts with oxygen gas.
Explanation:
Balanced equation to show the production of MgO from Mg and oxygen.
2 Mg + O2 → 2 Mgo
From the equation it can be concluded that 2 moles of Mg is required for the formation of 2 moles of MgO.
now, the given weight of Mg is 48 grams
atomic weight of Mg= 24.3 gram/mole
We can calculate the number of moles in 48 grams of Mg by applying the following formula:
number of moles= mass of the substance or element given÷ mass of the one mole of the element.
Putting the values in the above equation
n= 48÷24.3
= 1.97 moles of Mg
Applying the stoichiometry it can be found that
2 moles of Mg gave 2 moles of MgO
1.97 moles of Mg gave x moles of MgO.
Solving for x
2÷2=1.97÷x
x= 1.97
Thus 1.97 moles of MgO is formed, to know the weight in grams we can use the formula used above as
mass = n × atomic mass
= 1.97 × 40.30 grams/mole
= 79.391 grams of MgO is formed.
Using stoichiometry, 48 grams of magnesium will react with oxygen to form 79.602 grams of magnesium oxide.
Explanation:To determine how many grams of magnesium oxide (MgO) will be formed when 48 grams of magnesium (Mg) reacts with oxygen (O2), we will use the stoichiometry of the balanced chemical equation:
2 Mg + O2 → 2 MgO
First, we need to calculate the molar mass of magnesium and magnesium oxide:
Molar mass of Mg = 24.305 g/molMolar mass of MgO = 24.305 (Mg) + 16.00 (O) = 40.305 g/molNow, using the stoichiometry of the reaction:
Determine how many moles of Mg are in 48 grams: moles of Mg = 48 g / 24.305 g/mol = 1.975 mol.According to the balanced equation, 2 moles of Mg produce 2 moles of MgO, so 1.975 mol of Mg will produce 1.975 mol of MgO.Finally, convert moles of MgO to grams: mass of MgO = 1.975 mol * 40.305 g/mol = 79.602 g of MgO.Therefore, 48 grams of magnesium will produce 79.602 grams of magnesium oxide.
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Answer: D). 100% of the females with red eyes, 100% of the males with white eyes.
Explanation: If XR represents the allele for red eyes and Xr represents the allele for white eye, and if the allele for red eyes is dominant and the allele for white eyes is recessive. Then the cross between the two will produce four offsprings, two females and two males. The females will be heterozygous for the trait having one dominant allele and one recessive allele XRXr while the males will have one allele for white eye and a Y chromosome XrY. Since XR is dominant, the females with genotype of XRXr will manifest red eye phenotype while the males with genotype of XrY will manifest phenotypically as white eyed because they have only one X chromosome.
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What is the name of the pressure that builds over time along a fault?
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The pressure that accumulates along a fault due to seismic stress, which can lead to an earthquake when it overcomes frictional resistance, is known as seismic stress. Over time this leads to the 'snap back' of rocks in what is called the elastic rebound theory.
The pressure that builds over time along a fault is known as seismic stress. In earthquake-prone regions, such as California, the accumulation of stress along a fault, which is restricted by friction, leads to the potential for earthquakes. Over time, as the stress builds due to the movement of tectonic plates, it eventually exceeds the frictional forces holding the fault blocks together. When this friction is overcome, the release of energy can cause the rocks to break and slip, resulting in an earthquake. This sudden release of energy and the subsequent 'snap back' of the deformed rocks to their original position is known as the elastic rebound theory. Strain gauges are sometimes employed to measure the bending of rocks near faults as a method to help forecast potential seismic events.
Nitrogen is a very important element in biology. What are some of the reasons why organisms need carbon?
Answer:
Nitrogen is a very important element in biology. What are some of the reasons why organisms need carbon?
Carbon forms the basis of every living organisms as it helps in growth, reproduction among others. Almost all cell molecules in all living organisms are made up of carbon
Explanation:
Write notes on the accesary organs of digestion found in the mouth and their function and structure
Answer:
Accesary organs: Accesary organs are those organs which are helpful in the digestion of food materials but they are not the parts of digestive track. These organs are present in the mouth i. e. tongue, saliva and teeth. The food is teared and crushed into pieces with the help of teeth due to their pointed structure. Saliva contains salivary glands which mixes with the food and starts the breakdown of food substance.
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Chromosomes contain _________________________ and are located inside of the nucleus.
Answer: DNA
Explanation:
A chromosome is a thread-like material with a long structure found in the cell nucleus. It mainly contains DNA and proteins. Due to the presence of DNA in chromosomes, it carries several genes.
The total number of chromosomes in human cell is 46: 44 are non-sex chromosomes while 2 are sex chromosomes
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
Explanation:
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the galapagos tortoise are biodiverse. tortoises in a more barren area have a flat shell and long neck to help grasp the sparse vegetation. tortoises that live in a more vegetated island, have more round shell and shorter necks. this is an example of
Final answer:
The diverse shell shapes and neck lengths of Galápagos tortoises represent examples of adaptive evolution and natural selection, with differences suited to their specific island environments.
Explanation:
The differences in shell shape and neck length of the Galápagos tortoises are excellent examples of adaptive evolution. Tortoises with saddle-shaped shells and longer necks are adapted to islands with sparse vegetation, where they need to reach higher to grasp food. Conversely, tortoises with dome-shaped shells and shorter necks are adapted to islands with more abundant ground vegetation, where there's less need to reach high. These variations in physical traits are consistent with Charles Darwin's observations and underscore the concept of natural selection, where environmental pressures influence which traits become more common in a population over time.
Which of the following is true? A. all organisms obtain water from food
B. Some substances must be resolved before they can be used.
C. Plant cells are unaffected when water is scarce
D. Water is important to some of organisms.
Answer: Option D. Water is important to some of organisms.
Explanation:
Water, with the chemical formula H2O, is a substance that forms the major percentage of many living cells, tissues and organs. Plants and animal cells rely on water to dissolve nutrients, aid transportation of materials within and out of the cell etc
Thus, the only true statement is that water is important to some of organisms.
what happens when oceanic crust collides with continental crust at a plate boundary
The correct phenomenon that occurs when oceanic crust collides with continental crust at a plate boundary is subduction.
When oceanic crust, which is denser and heavier, collides with continental crust, which is less dense and lighter, the oceanic crust is typically forced underneath the continental crust in a process known as subduction. This occurs at convergent plate boundaries, where two tectonic plates move towards each other.
As the oceanic crust descends into the mantle, it is subjected to increasing temperatures and pressures. This can lead to partial melting of the subducting plate, which in turn can produce magma that rises through the overlying continental crust. This magma can reach the surface to form volcanoes, or it can cool and solidify at depth to form intrusive igneous rocks.
The subduction process is also responsible for the formation of deep-sea trenches, such as the Mariana Trench, where the oceanic crust bends and begins its descent into the mantle. Additionally, the friction and heat generated by the colliding plates can lead to earthquakes and the formation of mountain ranges on the continental side of the boundary, as the crust is crumpled and uplifted.
In summary, when oceanic crust collides with continental crust, the denser oceanic crust is subducted beneath the lighter continental crust, leading to a range of geological activities including volcanic activity, earthquakes, and mountain building.
1. Compare How do
residual soil and transported
soil differ?
1. Would separated populations of squirrels be able to interbreed if
the barrier was no longer there? Defend your answer.
Type your answer here
Answer:
No, they could not interbreed.
Explanation:
When a group of squirrels separate from each other and develop its unique characteristics, this is known as speciation. One type of speciation is allopatic speciation in which one squirrel's species separate into two separate groups and isolated from each other because of the physical barrier. This physical barrier can be a mountain range or waterway and makes it impossible to breed with one another. Each squirrels species develop unique genetic characteristics due to change in habitat and genetic variations are transferred to their offspring.
1. Normal cells and cancer cells differ in several
ways. This illustration shows some examples of
visible changes in cancer cells.
Multinucleated
Which of these accurately describes a difference
between cancer cells and normal cells?
O A. Cancer cells divide less frequently.
B. Cancer cells lack the ordered
arrangement of normal cells.
Multipolar
mitosis
Cancer cells have a consistent size
and shape.
Arreste
mitosis
O
D. Cancer cell nuclei are always small
and rounded in shape.
Answer: cancer cells lack the orders arrangement of normal cells
Explanation:
The accurate difference between cancer cells and normal cells is that cancer cells lack the ordered arrangement of normal cells.
The accurate difference between cancer cells and normal cells is that cancer cells lack the ordered arrangement of normal cells (option B). Normal cells typically have a specific arrangement and organization, whereas cancer cells can appear disorganized and scattered. This can be seen in the illustration, where the cancer cells are multinucleated and have multipolar mitosis.
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Identify the two layers that surround the sun's innermost layer. Select the two correct answers.
A: photosphere
B: radiative zone
C: convection zone
D: chromosphere
Answer:
B- radiative zine and c- convection zone
Explanation:
The two layers that surround the sun's innermost layer is radiative zone and convection zone. The correct option is B and C.
What are Sun's different layers?The sun has seven layers: three inner layers and four outer layers. The core, radiative zone, and convection zone are the inner layers, while the photosphere, chromosphere, transition region, and corona are the outer layers.
The atmosphere is composed primarily of three layers: the core, the radiative zone, and the convective zone. These are the Sun's internal components.
The Core, Radiative Zone, and Convection Zone are the inner layers. The Photosphere, Chromosphere, Transition Region, and Corona are the outer layers.
The photosphere is the Sun's visible surface. Since the Sun is a massive ball of plasma, it lacks a distinct, solid surface like Earth.
Thus, the correct option is B and C.
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The pigments for light collection in photosynthesis are located in the:
I need answer asap plz
Answer:
A. A dog drinking water
Explanation:
Because def f external stimulus the feeling you describe as hunger, the churning sensation you experience when anxious or afraid.
The amount of water that evaporates from earth is _____.
roughly equal to the amount that falls as precipitation
less than the amount that falls as precipitation
more than the amount that falls as precipitation
Answer:
The amount of water that evaporates from earth is roughly equal to the amount that falls as precipitation.
Explanation:
In the hydrological cycle, evaporation consists of the conversion of liquid water into water vapor, which reaches the atmosphere. Once the water vapor condenses produces precipitation in the form of rain, snow or hail.
On the earth the amount of water that evaporates is proportional to the water that falls as precipitation. The mass of ocean water is substantially greater than the amount of land, so variations in the proportion of evaporated water and precipitation occur in the hydrological cycle:
In the oceans, evaporation is greater than the precipitation that occurs. On the continents - firm land - evaporation is less than precipitation.This produces a certain grade of compensation in which, globally, the amount of water that evaporates from the earth is roughly equal to the amount that falls as precipitation.
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Answer:
Equal or roughly equal
Explanation:
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