Answer:A protein disk that attach two chromatids to each other in chromosome is called CENTROMERE.
Explanation: it is the attaching point for two chromatids. centromere is responsible for guiding the movement of chromosome.
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.
what specialized structure would you expect to find in a cell adapted to produce energy
Answer: Mitochondria
Explanation:
Mitochondria are oval shaped cell organelles bounded by a double membrane, and serve as a site of respiration or where energy is released from simple sugars like glucose.
Thus, the ability to produce energy makes mitochondria the power house of the cell
mitochondria are known as the power house of cell
Use of low temperatures as a method of control is a microbicidal method.
True
False
Answer:
False.
Explanation:
Sterilization technique is a method in which low temperatures is used for controlling of microorganisms growth which causes infection in food materials, while in microbicidal method, compounds are used to decrease the growth of harmful microorganisms in a substances which causes infection. Wood tar is the example of microbicidal compound.
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.
How is it possible that over 20 million living organisms on the planet are made up of only 5 types of nucleotide based arranged in long chains?
Answer/Explanation:
The DNA in all living organisms is made up of 4 bases, adenine, thymine, guanine, cytosine. The RNA replaces thymine with uracil, making 5 types of nucleotide. The number of nucleotide pairs in a genome can range from half a million up to 100,000 million - meaning there are an exponential number of combinations of these 4 bases.
Imagine an organism exists that has only 2 nucleotides (this is over 200,000x smaller than even the smallest bacterial genome). If we allow any nucleotide at each of the 2 positions, then we have 4x4 (4²) or 16 possible combinations of sequences. For a nucleotide length of 4, the total number of possible combinations are 4⁴ or 256.
Since we are dealing with many millions of nucleotides, there are essentially infinite combinations of nucleotides, giving rise to the variation that produces over 20 million organisms on the planet.
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.
Carbon dioxide is captured and converted into organic compounds such as sugars, in the ____?
- Calvin cycle
- Krebs cycle
-Electron transport chain
- mitochondria
Answer: Calvin cycle
Explanation: Calvin cycle is a cyclic pathway in which carbon dioxide is assimilated. The process of photosynthesis is divided into two: The light reactions and carbon fixation reactions. In light reactions, chlorophyll and other light absorbing pigments absorb light from the sun and conserve it as ATP and NADPH. In carbon fixation reactions, carbon dioxide reduced to sugars in a cyclic pathway driven by ATP and NADPH. This pathway is known as the Calvin cycle.
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.
The pigments for light collection in photosynthesis are located in the:
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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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:
1. Compare How do
residual soil and transported
soil differ?
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.
The process in which the DNA from one type of cell causes an inheritable change in a second type of cell is called
Answer:
bacteriophages
Explanation:
Complete the sentence to explain how body parts move.
When muscles contract and relax, the muscles move the
attached to them. This results in movement of
Answer:
probably bones
Explanation:
Answer:
When muscles contract and relax, the muscles move the attached to them. This results in the movement of bones.
Explanation:
Skeletal muscles are the part of the muscular system, which are attached to the bones via tendons. The contractions or relaxation of muscles is primarily caused due to skeletal muscles. These muscles cause the mechanical movement of the body parts. These tendons are present at many joints of the body allowing muscle movement, which eventually causes bone movement.
Thus, all the vertebrates move by the action of bones. Tendons play a crucial role in the attachment of bone to the muscles. These muscles when contract or relax, cause the movement of the bones. These muscles work in antagonism, such that when one muscle flexes, the other one relaxes.
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What are the two factors that
affect an object's kinetic energy?
An object's kinetic energy is influenced by its mass and velocity. The kinetic energy of an object is determined by the equation KE = 1/2 mv^2, implying that larger objects moving at faster speeds have more kinetic energy.
Explanation:The two factors that affect an object's kinetic energy are its mass and its velocity. Kinetic energy is defined as the energy of an object in motion. The equation to calculate kinetic energy is KE = 1/2 mv^2 where m is the mass of the object and v is its velocity. Based on this equation, it's clear that an object with a larger mass or a higher velocity will have more kinetic energy. For instance, a heavy truck moving at a high speed has more kinetic energy than a small car moving at a slow speed.
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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.
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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What is the name of the pressure that builds over time along a fault?
but if u answer u will be mark as brainlist sooooo ;)
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.
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.
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:
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.
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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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
Will give Brainliest!
Answer: branching tree diagram
Explanation:
Answer:
I'm answering so the other
Explanation:
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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.
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)
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:
edmentum gang
According to Darwin's theory of natural selection
Answer:individuals who survive are the ones best adapted for their environment.
Explanation:
Answer:
qsa
Explanation:
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.
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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