Answer:a
Explanation:
The process in which impurities are removed from a mineral
Answer:
The removal of impurities is usually done chemically. For example, in the manufacturing of iron, calcium carbonate is added to the blast furnace to remove silicon dioxide from the iron ore. Zone refining is an economically important method for the purification of semiconductors.
Explanation:
At school we are taught that there is a dominant gene for brown eyes and a recessive one for blue.
In this sentence, dominant means:
A. having undergone mutation
B. of or relating to single-cell organisms
C. having reached full development, growth, or
maturity
D. producing a trait even when inherited from only
one parent
Answer:
D. Producing a trait even when inherited from only one parent
Explanation:
A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive.
Pith is composed of ______. Multiple choice question. companion cells sclerenchyma cells collenchyma cells parenchyma cells
Answer:
parenchyma cells
Explanation:
If a sexually reproducing organism has 28 chromosomes in it body cells, how many chromosome did it inherit from each parent?
A. 7
B. 14
C. 16
D.28
I learned that prayer is _______ to god, who is never busy to hear my prayers.
Answer: I learned that prayer is talking to god, who is never busy to hear my prayers.
Explanation:
i need help with this
Answer:
C. cell wall
Explanation:
The cell wall is the structure that would normally be found in a plant cell but not in animal cell. The plant cells get collapsed due to the environmental pressure, not in the case of animal cell.
When a person begins to walk, the neurons in the ______ stimulate the appropriate muscles to produce the pattern and rhythm of arm and leg movements associated with walking.
Answer:
caudate nucleus
Explanation:
When a person begins to walk, the neurons in the caudate nucleus stimulate the appropriate muscles to produce the pattern and rhythm of arm and leg movements associated with walking
How do turtles and cleaner fish benefit from their interactions
[tex] \: \: \: \: \: \: [/tex]
In a mutualistic relationship both organisms benefit from living closely together in a symbiotic relationshipexampleDifferent fish nibble on old skin and small creatures such as parasites living on the sea turtle. The fish gets dinner, the turtle a free surface clean!hope it helps[tex] \: \: \: \: \: \: [/tex]
Where are materials stored in single celled organisms?
Answer: Ribosomes most of the time.
Explanation:
why is the digestive tract of the frog well vascularized
The digestive tract of the frog is well vascularized because it aids in the absorption of nutrients.
The digestive tract of a frog is a hollow long tube that extends from the mouth to the anus which helps in the ingestion and digestion of food.
The digestive tract of frog has the following characteristics:
alimentary canal of the frog is not long, that is, it is short. It has accessory organs of digestion such as liver, gall bladder and pancreas.All the digested food substances are absorbed at the small intestine due to the presence of microvilli.
This microvilli is made up of a central core that is vascularized, that is, it contains artery, vein and lymphatic capillary.
Therefore, the vascularized microvilli of the small intestine of frog help in the absorption of nutrients.
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The principle that we encode information together with its context is known as encoding a. transcription. b. priming. c. consolidation. d. specificity.
What is the major consideration in setting the lower limit of cell size?
A. The cell size must be small as to fit all the processes and structures to support life.
B. The cell must be large enough to fight the pathogens.
C. The cell must be large enough to attach to a substrate.
D. The lower limit should be small enough for the cell to move in the fluid efficiently.
Answer:
c
Explanation:
The lower limit should be small enough for the cell to move in the fluid efficiently. Therefore, option (D) is correct.
The major consideration in setting the lower limit of cell size is the need for the cell to move in fluid efficiently. As cells become smaller, their surface area-to-volume ratio increases, allowing for more effective exchange of nutrients, gases, and waste products across their membrane.
This is particularly important for cells living in fluid environments where diffusion plays a crucial role in these exchanges. Small cells have an advantage in absorbing and expelling substances due to their larger surface area relative to their volume. Therefore, the efficiency of nutrient uptake and waste removal becomes more effective with smaller cell sizes, making efficient movement in fluid environments a significant factor in determining the lower limit of cell size. Thus, option (D) is correct.
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What is the proper definition for abiotic?
Answer:
In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems
Explanation:
a nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it: Abiotic factors can determine which species of organisms will survive in a given environment.
hope this helps you.
QUESTION: If there was no atmosphere around Earth, how would that impact your life in the planet?
Have you ever wondered what would happen if Earth lost its atmosphere? It's believed that the planet is slowly losing its atmosphere, bit by bit, as it bleeds off into space. But what if Earth instantly lost its atmosphere, all at once? Just how bad would it be? Would people die? Would everything die? Could the planet recover?
What Would Happen?
Here's a breakdown of what could be expected:
It would be silent. Sound requires a medium to transmit waves. You could feel vibrations from the ground, but you wouldn't hear anything.
Birds and planes would fall from the sky. Although we can't see air (except clouds), it has mass that supports flying objects.
The sky would turn black. It's blue because of the atmosphere. You know those pictures taken from the Moon? The Earth's sky would look like that.
All unprotected plant and animal life on the Earth's surface would die. We can't survive long in a vacuum, which is what we'd have if the atmosphere suddenly vanished. It would be much like being "spaced' or shot out of an airlock, except the initial temperature would be higher. Eardrums would pop. Saliva would boil. But you wouldn't die instantly. If you held your breath, your lungs would pop, which would be the quickest (albeit most painful) death. If you exhaled, you'd pass out in about 15 seconds and die in around three minutes. Even if you were handed an oxygen mask, you wouldn't be able to breathe. This is because your diaphragm uses the pressure difference between the air inside your lungs and outside your body to inhale.
Let's say you have a pressure suit and air. You'd live, but you'd get a massive sunburn on exposed skin because the Earth's atmosphere is what filters solar radiation. It's hard to say how much trouble you'd be in from this effect on the dark side of the planet, but being in direct sunlight would be severe.
The rivers, lakes, and oceans would boil. Boiling occurs whenever vapor pressure of a liquid exceeds external pressure. In a vacuum, water readily boils, even if the temperature is warm. You can test this yourself.
Although water would boil, the water vapor would not fully replenish the atmospheric pressure. An equilibrium point would be reached where there would be enough water vapor to prevent the oceans from boiling off. The remaining water would freeze.
Eventually (long after surface life had died), solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe.
The lack of atmosphere would chill the Earth's surface. We're not talking absolute zero cold, but the temperature would drop below freezing. Water vapor from the oceans would act as a greenhouse gas, raising the temperature. Unfortunately, the increased temperature would allow more water to transition from the sea into the air, likely leading to a runaway greenhouse effect and making the planet more like Venus than Mars.
Explanation:
Organisms that need air to breathe would die. Plants and land animals would die. Fish would die. Most aquatic organisms would die. However, some bacteria could survive, so losing the atmosphere wouldn't kill all life on Earth. Chemosynthetic bacteria wouldn't even notice the loss of atmosphere.
Volcanoes and geothermal vents would continue to pump out carbon dioxide and other gases to add to the water. The most significant difference between the original and new atmosphere would be the much lower abundance of nitrogen. Earth could replenish some nitrogen from meteor strikes, but most of it would be lost forever.
Could Humans Survive?
There are two ways human beings could survive losing the atmosphere:
Build radiation-shielded domes on the Earth's surface. The domes would need a pressurized atmosphere and would need to support plant life. We would need time to build biodomes, but the result would not be much different from trying to survive on another planet. Water would remain, so there would be a source of oxygen.
Build a dome under the sea. The water could provide pressure and filter out some solar radiation. We wouldn't want to filter out all radiation because we'd probably want to grow plants (though maybe it would be possible to learn some tasty ways to prepare bacteria as food).
Write a hypostasis based on observations on identifying unknown materials and scientific principals.
Answer:
Until the past decade, scientists, research institutions, and government agencies relied solely on a system of self-regulation based on shared ethical principles and generally accepted research practices to ensure integrity in the research process. Among the very basic principles that guide scientists, as well as many other scholars, are those expressed as respect for the integrity of knowledge, collegiality, honesty, objectivity, and openness. These principles are at work in the fundamental elements of the scientific method, such as formulating a hypothesis, designing an experiment to test the hypothesis, and collecting and interpreting data. In addition, more particular principles characteristic of specific scientific disciplines influence the methods of observation; the acquisition, storage, management, and sharing of data; the communication of scientific knowledge and information; and the training of younger scientists.1 How these principles are applied varies considerably among the several scientific disciplines, different research organizations, and individual investigators.
One of the hottest ideas in engineering today is the concept of building an energy capturing system
similar to photosynthesis. The system would use light energy to make artificial food. What two
parts would such a system need, and how must these parts interact if they are to be like
photosynthesis?
The capturing device and converter are the two parts needed by the energy capturing system in order to make food.
If an energy capturing system wants to perform the same function of photosynthesis, then it must have two parts i.e. converter and capturing device. The capturing device works to capture or absorb light energy and send it to the place where this energy energy is converted into food.
The second part is the converted which convert light energy into food particles. These two parts interact with each other then the desire product will e achieved otherwise not so we can conclude that capturing device and converter are the two parts needed by the energy capturing system in order to make food.
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Which statement describes the process of osmosis in an animal cell
Answer: B.
Explanation:
The statement that describes the process of osmosis in an animal cell is water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
OSMOSIS:Osmosis is the process by which water molecules move from a region of higher concentration to a region of lower concentration through a semipermeable membrane.
According to this question, which is describing the structure of the cell membrane as a semipermeable membrane. The cell membrane selectively allows the passage of certain molecules.
Osmosis will occur in this animal cell when water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
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Predict how the absence of phytoplankton in the coral reef could affect the entire community
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Producers– These are autotrophic organisms which make their food through photosynthesis. Green plants, algae, and chemo-synthetic bacteria are all examples of producers in marine habitats.
A student unpacks his lunch and spreads out the potato chips on the brown paper lunch bag. Within minutes the student notices translucent spots on the lunch bag.
The translucent spots on the lunch bag indicate the potato chips contain which organic molecule?
carbohydrates
proteins
lipids
nucleic acids
The main sugar that photosynthesis produces is help me please ;(
Answer:
The answer is Glucose.
Hope that helps. x
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
reproduction in prokaryotes occurs primarily through the process known as
Reproduction in prokaryotes occurs primarily through the process known as Binary Fission.
1) Consider the image seen here. The image, at point Y, represents the process of
es
A) hydrolysis; lipid
B) hydrolysis; saturated fat
dehydration synthesis, lipid
D) dehydration synthesis, protein
Answer:
you did put a picture but im pretty sure its a lipids
Explanation:
while a neuron membrane is depolarizing its __________.
Given what we know about the depolarization of neurons, we can confirm that while a neuron membrane is depolarizing its sodium gates are fully open.
Throughout the human body, sodium is often used to cause shifts in membrane potentials, as well as a variety of other metabolic processes, due to the electric charge of this ion. One such example is the neuron, which uses a flood of sodium ions to depolarize its membrane.
During depolarization, the membrane potential changes from a negative charge to that of a positive one. This is caused by the rapid flooding of sodium into the cell, which increases the positive charge in the interior of the cell and thus affects the membrane's potential.
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What are the functions of guard cells?
Guard cells control the opening and closing of the stomata in plant cells.
WHAT ARE GUARD CELLS:Guard cells are structures that surrounds the stomata of plant cells and regulates the opening and closing of the stomata. The stomata, which are located on the leaves of plants opens in order for the plant to perform gaseous exchange i.e. intake of CO2 and release of O2.Therefore, Guard cells function to control the opening and closing of the stomata in plant cells.
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hi plz someone talk to me
Answer:
yes sure what's the topic!?!?!?
When heat is supplied to one end of a long metal rod, then which spreads at once in the entire rod. It is true? If not, justify your answer.
It is true that when heat is supplied to one end of a long metal rod, then which spreads at once in the entire rod.
What is conduction?Conduction is the transfer of heat energy through collisions between neighboring atoms or molecules.
Conduction occurs more easily in solids and liquids because the particles are closer together than in gases because the particles are farther apart.
Good conductors are materials that allow electricity to easily pass through them. Bad conductors are materials that do not allow electricity to easily pass through them.
Most metals are thought to be good electrical current conductors. Copper is just one of the more common materials used in conductors. Silver, gold, and aluminum are other materials that are occasionally used as conductors.
Thus, the given statement is true.
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What are the differences and similarities between elements, atoms, molecules, and compounds?
Atoms are the thing that make up molecules and compounds. Molecules contain two or more atoms and are held together by covalent bonds, whereas compounds are held together by ionic bonds. ... The atoms within a compound also must be different from eachother, whereas a molecule can consist of only one element.
can you give me brainliest
algien conoce a yaninsoto y tiene esta foto de perfil xd
Answer:
no, pero es un show si es dime cual es el nombre del show
what species accepts electrons in the final step of the electron transport chain?
Answer:
Oxygen
Explanation:
Because it’s oxygen I don’t know ♀️
Describe how the diaphragm and the rib cage and lungs move during inhalation and
exhalation.
this is science pls help
Answer:
During inhalation, the diaphragm contracts and pulls downwards, the ribcage expands, allowing oxygen to be sucked in through negative pressure, which causes the lungs to inflate.
During exhalation, the diaphragm and ribcage relax, returning to their normal positions, allowing the oxygen out of the body, thus deflating the lungs.