Answer:
The answer is B.
Explanation:
Photons are particles of electromagnetic energy, which would include radio waves including microwaves, light including infrared, visible and ultraviolet, X-rays, gamma rays, and some cosmic rays. Although photons have no rest mass, they nevertheless have energy, linear momentum, and spin.
A photon is a quantum of electromagnetic energy with zero rest mass and no electric charge. It is a fundamental particle that exhibits both wave-like and particle-like properties, described under the principle of wave-particle duality in quantum mechanics. The correct answer to the nature of a photon is a massless bundle of electromagnetic energy.
A photon is a fundamental concept in physics, particularly in the field of quantum mechanics. It is best described as a quantum of electromagnetic energy, which implies that it is the smallest indivisible particle of light or electromagnetic radiation. This means it acts like a particle, although it also exhibits wave-like behaviors, a duality that is central to quantum physics.
Photons are unique because they have zero rest mass and no electric charge, allowing them to travel through space at the speed of light. They carry energy and momentum which can be absorbed or emitted by atoms and molecules, leading to various phenomena such as the photoelectric effect and the emission spectra. The energy of a photon is directly proportional to its frequency and can be expressed using Planck's constant. The question inquires about the nature of a photon, and the correct answer is b. massless bundle of electromagnetic energy, as it encapsulates the essence of what photons represent in the realm of physics.
Which sentence best describes an ecosystem?
Answer: D
Explanation:
answer is : an ecosystem is all of the organisms living in a given area
PLEASE HELP ME,
A feedback mechanism that serves to decrease the stimulus and bring a system back to
homeostasis is called a
A. negative feedback mechanism
or
B. positive feedback mechanism
Answer:
A. negative feedback mechanism
Explanation:
A negative feedback implies stimulation towards less change and restoration of the normal state.
A mechanism that serves to decrease the stimulus and bring a system back to homeostasis therefore shall be referred to as a negative feedback mechanism.
This is because homeostasis is the normal state, mechanisms bringing further change to homeostasis can be referred to as positive feedback mechanism and vise versa.
A feedback mechanism that decreases the stimulus and brings a system back to homeostasis is known as a negative feedback mechanism.
Explanation:A feedback mechanism that serves to decrease the stimulus and bring a system back to homeostasis is called a negative feedback mechanism. This process helps to maintain stability in our body by reversing any deviations from the normal levels. Negative feedback does this by triggering responses that counteract changes, bringing the variable back to a set point. For instance, the maintenance of blood glucose levels is a classic example of a negative feedback mechanism. After eating, blood glucose levels rise, which are detected by the pancreas that releases insulin, thereby lowering the glucose levels back to normal.
Conversely, negative feedback also works if glucose levels are too low; the pancreas releases glucagon to increase the glucose levels. The primary function of negative feedback loops is to prevent physiological variables from going beyond the normal range, essentially turning systems 'off' or 'on' to achieve stability. Hence, negative feedback mechanisms are the predominant system used to sustain homeostasis.
What must the grasses be able to do to survive?
A The grasses must be able to outcompete cacti and yucca plants for shelter from
storms.
B The grasses must be able to outcompete cacti and yucca plants for minerals in
mountain rocks.
C The grasses must be able to outcompete cacti and yucca plants for shade.
D The grasses must be able to outcompete cacti and yucca plants for water.
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D. Must be able to outcompete cacti and yucca plants for water
What structures in the body transport blood through the cardiovascular system?
artery
vein
trachea
lungs
The arteries carry blood away from the heart; the veins carry it back to the heart.
B.veins
Answer:it’s artery , vein
Explanation:on edge 2020
Define the role of transport proteins
Answer:
Transport proteins function in both active and passive transport to move molecules across the plasma membrane. ... These channel proteins are responsible for bringing in ions and other small molecules into the cell. It's important to remember that each channel protein can only bring in a specific molecule.
Explanation:
Answer:
Transport proteins are proteins that transport substances across biological membranes. Transport proteins are found within the membrane itself, where they form a channel, or a carrying mechanism, to allow their substrate to pass from one side to the other.
i think that its correct :)
Seasons are caused by ____. (1 point)
a).Earth’s rotation
b.) precession
c.)Earth’s tilted axis
d.)Earth’s distance from the sun
Answer:
Earth's tilted axis
Explanation:
The axial tilt of the Earth causes either the northern or southern hemisphere to be closer to the sun, causing seasons
a).Earth’s rotation
This causes the day night cycle, not seasons.
b.) precession
Precession is the movement of the earth's axis in its orientation with its orbit, for example the orbit changing from lets say 15 to 20 degrees.
d.)Earth’s distance from the sun-
If this were true, all the earth would have the same seasons, but they do not.
Seasons are primarily caused by Earth's tilted axis. This tilt, combined with Earth's orbit around the Sun, results in different parts of Earth receiving different amounts of sunlight at different times of the year, creating the seasons.
Explanation:The seasons are primarily caused by Earth’s tilted axis, which is angled at about 23.5 degrees relative to its orbital plane. As the Earth orbits the Sun, this tilt causes different parts of the Earth to receive varying amounts of sunlight at different times of the year. In the summer months, the hemisphere tilted towards the Sun experiences longer, sunnier days, (i.e., summer), while the hemisphere tilted away experiences winter. Conversely, during winter, the hemisphere tilted away from the Sun experiences shorter, darker days. Earth’s rotation and precession do affect the Earth’s climate but are not the primary causes of the changing seasons. Similarly, Earth’s distance from the Sun varies slightly due to its elliptical orbit but doesn’t significantly affect the seasons.
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What happens if an enzyme is denatured? How does that impact the reaction rate?
Answer:
An enzyme is a biological protein molecule made up of thousands of amino acids. ... Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function.extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. ... Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
62. Compare point-source pollution and non-point pollution.
Answer and Explanation: The difference between point and nonpoint source pollution is that point source pollution has a single, identifiable source while nonpoint source pollution is a collection of pollutants from many different sources, not all of which are readily identifiable.
Answer:
Point source pollution refers to the pollution that occurs from a single identifiable source while nonpoint source pollution refers to the pollution that occurs via many diffuse sources
Explanation:
All of the population in a particular area make up a?
I would guess a community.
The answer would be: A community
4. How do ocean currents influence climate? Give an example of such an ocean current.
The Gulf Stream influences the climate of England. Without the Gulf Stream England would be a cold country.
ocean - Large bodies of water.
current flowing towards equator carry cold water from poles
current flowing towards away from equator carry warm water from poles
Example - Humidity
Let me know if you have any questions
Which of these is an exothermic reaction?
A. photosynthesis
B. cooking an egg
C. cellular respiration
D. rubbing your hands together
I think it might be C because when you are rubbing your hands energy is not released it’s absorbed, cooking an egg the heat from the pan is absorbed by the egg, photosynthesis the plant is taking in energy, and in cellular respiration you release energy
Which statements describe primary consumers? Check all that apply.
A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. A food chain starts with the primary energy source, usually the sun or boiling-hot deep sea vents. The next link in the chain is an organism that make its own food from the primary energy source -- an example is photosynthetic plants that make their own food from sunlight (using a process called photosynthesis) and chemosynthetic bacteria that make their food energy from chemicals in hydrothermal vents. These are called autotrophs or primary producers.
Next come organisms that eat the autotrophs; these organisms are called herbivores or primary consumers -- an example is a rabbit that eats grass
A primary consumer is an organism that feeds on primary producers. Organisms of this type make up the second trophic level and are consumed or predated by secondary consumers, tertiary consumers or apex predators.
Sickle-cell anemia is an example of codominance.What implications does this have for people with one or two copies of the sickle-cell gene?
a) people with two copies of the mutated gene have healthy red blood cells.people with one copy of the mutated gene dont have the disease but are carries of the disease.
b) people with two copies of the mutated gene have sicke cell anemia. people with one copy of the mutated gene have healthy red blood cells.
c) people with two copies of the mutated gene have sickle cell anemia. people with one copy of the mutated gene have both healthy and misshapen red blood cells and are carriers of the disease
d) people with two copies of the mutated gene are carriers of the disease. people with one copy of the mutated gene dont have the disease
please help!
Answer:
C
Explanation:
Codominant alleles mean that both alleles are expressed in the trait of the organism because no one alleles mask the effects of the other. Therefore an individual heterozygous for sickle cell will have both healthy and sickle cells in his blood. This is similar to plants with codominant alleles for petal color. If red and white color alleles are codominant, then the petals will have red and white patterns on the petals.
people with two copies of the mutated gene have sickle cell anemia. people with one copy of the mutated gene have both healthy and misshapen red blood cells and are carriers of the disease.
Optio nC is correct.
How do we explain?Sickle cell anemia is a genetic disorder that is caused by a mutation in the hemoglobin gene. Hemoglobin is a protein that carries oxygen in the blood. The mutation in the sickle cell gene causes the hemoglobin molecules to form into long, rod-like shapes. These rod-like shapes can clog up the blood vessels, which can lead to a variety of health problems, including anemia, pain, and organ damage.
People with two copies of the sickle cell gene have sickle cell anemia. They have all of their red blood cells shaped like rods, which can cause severe health problems.
Option C is correc
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HELP!!!! Which of the following correctly relates the porosity, permeability and production of a well in an aquifer?
a. Increasing porosity and decreasing permeability lead to increased production in an aquifer.
b. Decreasing porosity and increasing permeability lead to increased production in an aquifer.
c. Decreasing porosity and decreasing permeability lead to increased production in an aquifer.
d. Increasing porosity and increasing permeability lead to increased production in an aquifer.
D-Increasing porosity and increasing permeability lead to increased production in an aquifer
Answer:
d. Increasing porosity and increasing permeability lead to increased production in an aquifer.
Explanation:
Underground aquifers are permeable geological formations that allow water to accumulate inside the soil. Depending on how water circulates within the soil, there are three primary types of aquifers: porous, karstic and fissural.
In addition to supplying sufficient water to keep surface watercourses stable (production function), aquifers also help prevent their overflow by absorbing excess heavy rainwater (regularization function).
What is the function of the Golgi apparatus?
Answer:
The job of the Golgi apparatus is to process macro molecule. For example proteins an lipids.
Hope this helped!
Brainliest answer? :)
Answer:
Image result for What is the function of the Golgi apparatus?socratic.org
The Golgi apparatus is an organelle present in most eukaryotic cells. It is made up of membrane-bound sacs, and is also called a Golgi body, Golgi complex, or dictyosome. The job of the Golgi apparatus is to process and bundle macromolecules like proteins and lipids as they are synthesized within the cell.
Explanation:
F.8.4A - An allele carried on a Y chromosome will affect
A.) all of the female offspring.
B.) some of the male and female offspring.
C.) the male offspring.
D.) none of the offspring.
Answer:
C.) the male offspring.
Explanation:
Only males have XY chromosomes so therefore it is impossible that a female is affected by a Y allele.
An allele carried on a Y chromosome affects only the male offspring. Hence the correct answer is C.
An allele carried on a Y chromosome will affect the male offspring. This is because females have two X chromosomes (XX) and are therefore unable to inherit Y-linked alleles. Males, on the other hand, have one X and one Y chromosome (XY), and the Y chromosome is inherited from their father. This means that any allele present on the Y chromosome will only be transmitted from father to son, affecting only the male offspring. An example of a trait determined by a Y-linked allele is hairy pinna, which only males can inherit and express. This genetic transmission principle underscores the distinct mechanisms of sex-linked inheritance, contrasting with traits linked to the X chromosome or autosomal traits.
Explain how and where urbanization occurs
Urbanization usually occurs when a country is still developing.
Green power comes from
A. Wind
B. Sun
C. Water
D. All of the above
Answer:D. all of the above
Explanation: because green power just means power harnessed from nature
Answer:
D. All of the above
Explanation:
Green power is from reusable sources. The Sun, wind and water are all reusable.
Which is a frameshift mutation?
A. substitution
B. nonsense
C. silent
D. deletion
I would say D
A frameshift mutation is a mutation caused by an insertion or deletion, which causes a shift in the translational reading frame. ... Instead of just changing one amino acid, frameshifts cause a change in all the amino acids in the rest of the gene
Answer:
The correct answer will be option-D
Explanation:
A mutation is a change or alteration in the sequence of the DNA of the organism which leads to change the function of the sequence.
The mutation is caused by many mechanisms but one of the mechanism is by adding or deleting the nucleotide in the sequence of the DNA.
The addition or deletion shifts the frame of the DNA while scanning it to form mRNA molecule which then codes a different protein. Therefore the type of mutation is known as "frameshift mutation".
In the given question, since the only deletion is provided therefore, option-D is the correct answer.
Based on the data table which two species are most closely related?
Answer:
C.) B and C
Explanation:
Can someone please describe how food is rearranged through chemical reactions forming new molecules that release energy as this matter moves through an organism.
Answer: I think it's photosynthesis
Explanation:
I know this is late, but this is actually an example of Cellular Respiration, the other person is wrong. While, the two are close, they are very different.
Which of the following is a correctly balanced equation?
B. is the answer because the number of moles of the reactants is equal to the number of moles of the products
Answer : The correct balanced equation is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
Explanation :
Balanced chemical equation : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
The balanced chemical reaction is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
This chemical reaction is balanced reaction because in this reaction, the number of atoms are balanced on both the sides.
While the other equations are not balanced because the number of atoms are not balanced on both the sides.
Hence, the correct balanced equation is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
How does the hydroelectric dam picture here impact the environment?
By releasing toxic chemicals in their emissions
By generating Significant heat that artificially warms nearby water
By producing greenhouse gases
By blocking fish migration
Answer:
By blocking fish migration
Explanation:
By releasing toxic chemicals in their emissions
Hydroelectrics only emissions are usually, non harmful electromagnetic signals.
By generating Significant heat that artificially warms nearby water
Possible, but they do not produce much significant heat
By producing greenhouse gases
No, just no- its magnets that are water moved, no room for greenhouse gasses..
By blocking fish migration
It is a dam, blocking a river, with fish in it.
By blocking fish migration the hydroelectric dam will impact the environment.
Because the emissions they produce include hazardous substances. The only pollutants that hydroelectric power typically produces are electromagnetic pulses that are harmless. By producing a significant amount of heat, which artificially heats the water in the surrounding area.
Although they do not generate a considerable amount of heat, they are a possibility. Because of the emission of greenhouse gases. No way, absolutely not; the water is propelled by magnets, and there is no place for greenhouse gases. By impeding the movement of fish. There are fish in the river that is being blocked off by the dam.
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Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
Hi!
The succsesful gene, like a camouflage gene, would increase in the species.
Hope this helps!
Answer:
the frequency of the genes in the population
Explanation:
took the tst
chloroplast is responsible for the reactions of photosynthesis true or false
Answer:
The answer is TRUE
Explanation:
Answer: true, in cellular respiration the mitochondria is what helps it.
Which Best describes the purpose of a bar graph?
The purpose of a bar graph is to show the relationships between different data by showing a quantity or amount for each category.
A bar graph (also known as a bar chart or bar diagram) is a visual tool that uses bars to compare data among categories. A bar graph may run horizontally or vertically. ... The graph represents categories on one axis and a discrete value in the other. The goal is to show the relationship between the two axes.
What controls traits and inheritance
Answer:
A persons' parents genes (and maybe Natural Selection)
I think the answer for this one might be the nucleic acids
Name two ways the bamboo uses the macromolecules it builds
Answer:
photosynthesis and lipids
Explanation:
Answer:
The correct answer is - structural support and storage for energy.
Explanation:
The bamboo is like most of the other plants produce carbohydrates by the process of photosynthesis. Plants convert glucose by polymerization into starch and polysaccharide for storage as an energy source and cellulose for cell wall structure and support.
Starch and polysaccharides provide energy by digesting the covalent bonds through the cellular respiration process. cellulose form the cell wall of the plant cells and gives it strength and support.
Thus, the correct answer is - structural support and storage for energy.
What is the placenta, and what is its role in fetal circulation?
The prenatal circulation of blood is different than the postnatal circulation, mainly because the lungs are not in use. The fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord. Blood from the placenta is carried to the fetus by the umbilical vein.
What is the function of the mitochondria?
A.
to secure the nucleus at the center of a cell
B.
to provide energy for the cell
C.
to provide immune defense for the cell
D.
to move materials in and out of the cell
Answer:
a
Explanation: