Which best explains how green plants absorb energy from the sun?
A) Sunlight heats up the outside of a leaf
B) Chemical Bonds in a glucose are formed
C) A photon strikes electrons in special molecules in a cell
D) Carbon dioxide combines with water to form glucose molecules.
Answers
Answer:
the answer is C
Green plants absorb energy from the sun when "A photon strikes electrons in special molecules in a cell"
Green plants are unique organisms being that they possess the ability to capture and utilize energy from the sun. This is possible because they possess special pigments in their CHLOROPLAST called CHLOROPHYLL. The general process whereby green plants capture and utilize sun's energy is called PHOTOSYNTHESIS.
During photosynthesis, a photon of light strikes electrons in the thylakoid lumen of the chloroplast. This facilitates the synthesis of ATP (energy) in further reactions that takes place in the chloroplast.
Therefore, green plants are able to obtain energy from the sun when photons (beam of light) strikes electrons in their CHLOROPLAST.
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Related Questions
Traits acquired during an organisms lifetime can be passed down to its offspring true or false
Answers
Answer:
False
Explanation:
An acquired trait is the character developed in an individual as a result of environmental influence. These traits are not coded by the DNA of a living organism and therefore cannot be passed on to future generations.
Explain how processing speed increases in middle childhood as a result of advances in automatization
-myelination increases in the central nervous system and causes thinking to become faster.
-habits become automatic (reading, tying shoes, etc.) so they are completed much quicker since the child doesn’t have to think about it
Answers
Processing speed in middle childhood increases due to advances in automatization, including increased myelination in the central nervous system and the development of automatic habits for routine tasks.
In middle childhood, processing speed increases as a result of advances in automatization. This is primarily due to two factors: increased myelination in the central nervous system and the development of automatic habits.
Firstly, myelination refers to the process of forming a protective fatty sheath called myelin around nerve fibers. During middle childhood, there is a significant increase in myelination in the central nervous system. Myelin acts as insulation for nerve fibers, allowing electrical impulses to travel more efficiently along neural pathways. This increased myelination leads to faster transmission of signals between different regions of the brain, resulting in quicker cognitive processing. As a result, thinking and information processing become faster and more efficient.
Secondly, during middle childhood, children develop automatic habits for various tasks. These habits are formed through repeated practice and reinforcement. Activities such as reading, tying shoes, or riding a bicycle become automated through practice and repetition. Once a skill becomes automatic, the child no longer needs to consciously think about each step involved. This reduces the cognitive load required to perform the task and allows for quicker execution.
For example, a child who has automated the process of reading can recognize and comprehend words more rapidly, leading to increased reading speed.The combination of increased myelination in the central nervous system and the development of automatic habits contributes to the overall increase in processing speed during middle childhood. The brain becomes more efficient in transmitting and processing information, and routine tasks are completed more quickly due to reduced cognitive effort. These advances in automatization play a significant role in the cognitive development and increased processing speed observed during this period of childhood.
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What methods are used in the biological approach?
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The most often utilized research techniques in psychology are correlational, case, and experimental studies. Any field, including biological psychology, shares this.
What is the biological strategy's primary focus?The biological approach examines psychological problems by looking at the physical underpinnings of both animal and human behavior. It is one of the main views in psychology and includes research on the neurological system, immune system, and brain.
What is a case of a biological psychology approach?The fear reaction is an illustration of the biological approach to psychology. The fight, flight, or freeze response is the result of the fear response. What a person does in the presence of a stressor depends on their biological makeup.
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Pls help me. Thanks if you did! Have a wonderful day or night!
Answers
The nitrogen cycle consists of the following steps:
decomposition by fungi and bacterianitrogen fixation during lightningmost plant uptake nitrates from the soil.dead organisms and waste releases ammonianitrogen-fixing bacteria in legume root nodulesnitrogen Fbang bacteria in soildenitrifying bacteriaammonium oxidizing bacterianitrite-oxidizing bacteriaWhat is the nitrogen cycle?The nitrogen cycle is the biogeochemical process through which nitrogen is changed into a variety of chemical forms as it moves across ecosystems in the atmosphere, on land, and in the sea. It is possible to convert nitrogen using both biological and physical methods.
Nitrogen is cycled through the biosphere by four different processes: nitrogen fixation, decay, nitrification, and denitrification.
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In biological macromolecules like proteins, the hydrophobic residues tend to clump together in the interior of the folded structure. What is the best explanation for why this occurs
Answers
Answer:
The water and polar residues cannot bind to the hydrophobic ones, so in the lowest energy state the hydrophobic residues are pushed together in the middle.
although social groups vary tremendously (e.g., families, sororities, sports teams, religious congregations), they are all alike in that .members share the same space at the same timeactions are guided by normsthey tend to be heterogeneousthey convey competitive advantage
Answers
Even while social groupings (such as family, sorority, sports teams, and religious congregations) differ greatly from one another, all of their behaviors are governed by standards.
Deindividuation & social loafing both refer to the spreading of responsibility, which is one element they have in common. The definition of a social family by social psychologists as a family of interdependent people implies that group members have an impact on one another. Social facilitation & social loafing are two instances of how the company of others affects our actions. Propinquity become used to via simple exposure. If something is similar, it will also appear similar. Reciprocal Liking: We often become used to the individuals we like and begin to know. In addition to assisting us in defining who we are, groups serve as a source for social standards that establish what is appropriate.
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John was able to move a small plastic ball by blowing on it. How does this show that matter is made up of particles?
The air coming out of John's mouth fills up the plastic ball.
The air particles change the shape and size of the plastic ball.
The ball is made up of particles that move and cause the ball to move.
The particles of air coming out of John's mouth pushed the ball.
Answers
Through which process is the stem cell going?
Answers
Answer:
Apheresis
Explanation:
hopes this helps
Answer:
apheresis
Explanation:
What is the stem cell?Stem cells are the body's raw materials — cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.
What is apheresis?Apheresis is a procedure in which blood is collected, part of the blood such as platelets or white blood cells is taken out, and the rest of the blood is returned to the donor.
8 As sunlight passes through Uranus’s atmosphere, the _____ gas absorbs the _____ portion of light, leaving the _____ color that we see when we look at the planet. A. Methane; red; blue-green B. Hydrogen; orange; purple C. Nitrogen; green; red D. Carbon; yellow; pink.
Answers
As sunlight passes through Uranus’s atmosphere, the methane gas absorbs the blue-green portion of light, leaving the red color that we see when we look at the planet. Hence, the correct option is A. Methane; red; blue-green.
As the light passes through Uranus’s atmosphere, the methane gas absorbs the blue-green region of the color spectrum. Thus, sunlight that reaches the surface of Uranus appears reddish. Methane absorbs the red region of the color spectrum as well, but not as much as it absorbs blue-green. So, the sunlight that reflects off Uranus contains less red and is a bluish-green color, but when we observe Uranus, the amount of red in the reflected light makes the planet appear reddish. Uranus is the seventh planet from the Sun.
It has a very unusual configuration, lying on its side, which makes it unique among the planets in the solar system. It has a hydrogen-rich atmosphere that also contains methane, which provides the planet with its characteristic blue-green color. Uranus has the coldest atmosphere of all the planets in the solar system, with an average temperature of about -200 degrees Celsius, due to its great distance from the Sun.
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4. Assertion A: Prokaryotes are identified by the membrane bound cell organelles. Reason R: Prokaryotes are considered as the primitive forms of life. *
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Answers
Answer:
d) A is false but R is true.
Explanation:
Prokaryotes are group of organisms that do not possess a membrane bound nucleus or any other membrane bound organelle in their cell e.g. mitochondria, endoplasmic reticulum etc. They lack such organelles.
However, they are truly considered as a primitive life form; much more primitive than eukaryotic organisms. Examples of prokaryotes are bacteria, archeae etc. Based on the above explanation, it is clear that the assertion (A) in this question is FALSE but the reason (R) is TRUE.
How many trophic levels do most food webs have? Why? Relate your answer to the appropriate law of thermodynamics
Answers
Answer:
Most food webs have between 4 and 5 trophic levels
Explanation:
Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers only absorb 0.1 or 1%.
From the input of solar energy begins a unidirectional energy flow. It passes through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is eventually dissipated in the environment.
There is an energy transfer from each trophic level to the next, and each level only uses 10% of this energy. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time. The rest of the energy is used by the organisms in their own metabolism or dissipated as heat to the environment.
The progressive reduction of energy determines the number of trophic levels, which, in general, turns to be between 4 and 5.
Both plant and animal cells contain -
A. mitochondria, cell membrane, and chloroplasts.
B. a cell membrane, cytoplasm, and nucleus.
C a cell membrane, cell wall, and nucleus.
D. mitochondria, a cell wall, and chloroplasts.
Answers
Both plant and animal cells contain a cell membrane, cytoplasm and nucleus because animal cell does not contain cell wall and plant cell have cell wall but both of the cell contain cell membrane, cytoplam and nucleus.Thus option B is correct.
What is the difference between plant and animal cell?Plant cell consist cell wall but in animal cell, cell wall is absent. Nucleus is present in both of the cell. animal cell does not contain cell wall and plant cell have cell wall but both of the cell contain cell membrane, cytoplam and nucleus.
The main function of vacuoles present in plant cell as it help in storage of waste materials in a plant cell and maintain a proper pressure in a plant cell.
Both plant and animal cells contain a cell membrane, cytoplasm and nucleus because animal cell does not cotain cell wall and plant cell have cell wall but both of the cell contain cell membrane, cytoplam and nucleus.Thus option B is correct.
There are various differences are found in plant and animal cell. The very first difference is shape of the cell, plant cell is square or rectangular in shape but animal shape is irregular in shape.
Plant cell consist cell wall but in animal cell, cell wall is absent. Nucleus is present in both of the cell.
The main function of vacuoles present in plant cell as it help in storage of waste materials in a plant cell and maintain a proper pressure in a plant cell.
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4. Decide whether sarcodines are more like ciliates or sporozoans. Explain.
Answers
Sarcodines are more like sporozoans because both do not have any external locomotory organs. Some of their species are parasitic in nature.
Sarcodines are the organisms of the superclass Sarcodina of the sub-phylum Protozoa. They are characterized by their ability to form pseudopodia for locomotion and entrapment of food. They are free-living as well as parasitic. The examples include: Amoeba, Entamoeba histolytica, etc.
Sporozoans are the organisms of the class Sporozoa. The organisms are identified for their endo-parasitic nature. They do not have locomotory organs and therefore are sessile. They have alternate sexual and asexual life cycle. The examples include: Plasmodium, Monocystis, etc.
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Most geologists rejected Alfred Wegener's idea of continental drift because why?
Answers
condition necessary for osmosis to takes place
Answers
What two conditions are necessary for osmosis to take place
The conditions required for osmosis are:
Two solutions having different solute concentration.
A semi-permeable membrane. When two solutions having different concentration of solutes is separated by a semi-permeable membrane, the solvent moves from the region of high concentration of solvent
Species more likely to become endangered require A. pristine habitats
B. late successional ecosystems. C. A and B only D. A, B and C E. ecosystems found on the right hand side of the logistic curve describing ecological development over time.
Answers
Species more likely to become endangered require pristine habitats and late successional ecosystems. The correct option is C. A and B only.
An endangered species is a species that is at risk of extinction or is declining rapidly in population. Endangered species are those that have been classified by the International Union for Conservation of Nature (IUCN) as at risk of extinction in the wild.
A pristine habitat is a habitat that has never been impacted or damaged by human activity. These habitats are free of human-caused disturbances, such as habitat destruction, pollution, or invasive species.
Late-successional ecosystems are those that have reached a climax or stable state. These ecosystems are the most mature and diverse, with a wide range of species. The ecosystems that have been undisturbed for a long period of time are those that are late-successional ecosystems. Species that are more likely to become endangered require pristine habitats and late-successional ecosystems. These types of ecosystems are rare and fragile and are easily impacted by human activities. Therefore, conservation measures must be taken to ensure that these ecosystems are protected from human disturbance and other forms of damage.
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Once you print, cut all the pieces apart. Then reassemble the puzzle so the the definition backs up with the card that has the term. So if one card says: double helix, the card that matches with it would say: the shape of DNA.
Answers
DNA replication is the process through which DNA duplicates. It occurs in the interphase and involves different enzymes, DNA molecules, and free nucleotides. Terms and definitions in the attached files.
What is DNA replication?
DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.
The origin of the replication requires helicase enzymes to break hydrogen bonds and separate the two original strands. The topoisomerase enzyme is necessary to release tension. Other proteins are also needed to join the strains and keep them separated. Once the molecule is opened, there is a region named replication forks. DNA polymerase makes the new nucleotides enter into the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs timine, and cytosine pairs guanine.
DNA strands are antiparallel, and replication occurs only in 5'-3' direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.
Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment.
In the attached files you will find the terms and their definitions.
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A elephant cell has 20 chromosomes. how many chromosomes will the cell have just before mitosis begins in the elephant cell?
Answers
The elephant cell will have 20 chromosomes.
Cells undergo interphase before getting to the mitotic phase. At the S phase of the interphase, the amount of DNA in the cell is double by replication. However, the number of chromosomes remains intact.
Thus, the cell gets to the mitotic phase with the same number of chromosomes that is usually present in normal vegetative cells of the animal.
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What takes place in a cell’s mitochondria?
A:protein synthesis
B:photosynthesis
C:cellular respiration
D:DNA replication
Answers
Answer:
C: cellular respiration
Explanation:
It's when which energy is released from the foods such as sugars into the cell.
Why is it hard to find animals in tropical areas?
Answers
Answer:
Tropical areas are warm and wet causing for animals to want to hide essentially. Also there is a lot of cover for animals to hide in. Usually in tropical areas there are a lot of predators also, another reason for animals to hide.
(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the need for this control group in the second experiment.
Answers
Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.
A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.
what happens to lac repressors in E. coli when lactose is present
Answers
When lactose is present in the environment, it binds to the lac repressor protein and causes a conformational change that prevents it from binding to the operator region of the lac operon. This allows RNA polymerase to bind to the promoter region and initiate transcription of the lac genes, leading to the production of the enzymes required for lactose metabolism.
In summary, the presence of lactose causes the lac repressor protein to undergo a conformational change that prevents it from binding to the operator region of the lac operon, allowing for the transcription of the lac genes and metabolism of lactose in E. coli.
Answer:
Explanation:
the presence of lactose causes the lac repressor protein to undergo a conformational change that prevents it from binding to the operator region of the lac operon, allowing for the transcription of the lac genes and metabolism of lactose in E. coli.
x. the bond angle in water is smaller than in ammonia because the atomic radius of oxygen is bigger than the one of nitrogen y. the bond angle in water is smaller than in ammo
Answers
The statement "the bond angle in water is smaller than in ammonia because the atomic radius of oxygen is bigger than the one of nitrogen" is true.
The bond angle in water is smaller than in ammonia because of two reasons. Firstly, the atomic radius of oxygen is bigger than the one of nitrogen. This leads to greater repulsion between the lone pairs of electrons on the oxygen atom in water. Secondly, the oxygen atom in water is more electronegative than the nitrogen atom in ammonia, which leads to a stronger bond in water and a smaller bond angle. Therefore, the bond angle in water is smaller than in ammonia.
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which is the acceptable administration route for Vincristine?
A-intrapertoneal
B-intravenous
C-intravesicular
D- intrathecal
Answers
The acceptable administration route for Vincristine is intravenous (IV). The correct option is B
What is Vincristine ?Leukemia, lymphoma, and sarcoma are just a few of the cancers that are handled by the chemotherapy medication vincristine. Because it is a vesicant, if it seeps out of a vein, it can seriously harm tissue. Vincristine should only be given intravenously for this reason.
The other options are not suitable ways to administer vincristine. To administer medication straight into the abdomen, employ intraperitoneal (IP) administration. Medication is delivered directly into the bladder through intravenous (IV) injection. Medication is delivered directly into the cerebrospinal fluid by intrathecal (IT) injection. Because it might have major side effects such paralysis and nerve damage, vincristine is normally not given through these routes.
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If you need to drive from Dallas, Texas, to Salt Lake City, Utah, (about 1500 miles), and the speed limit is 60 mph most of the way, what is the least amount of time you will need?
Answers
Answer:
25 hours
Explanation:
Speed is a measure of the distance traveled by a body relative to the time taken to complete a trip or a journey. Mathematically, speed can be expressed as;
speed = distance/time
Hence, time = distance/speed
The distance covering Dallas, Texas, to Salt Lake City, Utah is about 1500 miles and the speed limit is 60 mph, hence;
time = 1500/60
= 25 hours
Therefore, the least amount of time that would be needed to cover the journey is 25 hours.
Answer:
25 hours is your answer
Explanation:
Which of the following is NOT a property used to establish the medullary osmotic gradient?
A. the filtrate flow through the ascending and descending limbs of the long nephron loops of juxtamedullary nephrons
B. the blood flow through the ascending and descending portions of the vasa recta
C. the descending limb's permeability to water and impermeability to salt
D. the ascending limb's impermeability to water and permeability to salt
Answers
The property that is NOT used to establish the medullary osmotic gradient is the filtrate flow through the ascending and descending limbs of the long nephron loops of juxtamedullary nephrons.
The establishment of the medullary osmotic gradient is a complex process that involves multiple properties. The descending limb's permeability to water and impermeability to salt and the ascending limb's impermeability to water and permeability to salt are two critical properties that contribute to the generation and maintenance of the gradient. Additionally, the blood flow through the ascending and descending portions of the vasa recta plays a crucial role in preventing the washout of the gradient by maintaining a countercurrent exchange system. Together, these properties enable the kidney to generate a concentration gradient that allows for the concentration of urine and the conservation of water in the body.
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make 2 Punnett squares using these crosses.
AA x aa and Aa x aa
Answers
Answer:
Attached is an image of the two Punnett squares. When making Punnett squares, each parent's alleles are crossed. This results in 4 possible genotypes of the children.
FAST 20 POINTS Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match the words with their definitions.
Answers
Transpiration
Evaporation
Precipitation
Condensation
Ground water
Run off
in the first gmo experiment, researchers genetically modified e. coli by giving the bacteria the gene it needed to
Answers
In the first GMO experiment, researchers genetically modified E. coli by giving the bacteria the gene it needed to produce insulin.
This was done by inserting the human gene for insulin into the E. coli genome, allowing the bacteria to produce the insulin protein. The development of this technology was a major breakthrough in medicine, as it allowed for the large-scale production of insulin for use in treating diabetes. Prior to this, insulin had to be extracted from animal pancreases, which was a time-consuming and expensive process that could not keep up with the demand for the hormone.
The use of GMOs in medicine has continued to grow since this initial experiment, with genetically modified organisms being used to produce a variety of medications, including vaccines and cancer treatments. While the use of GMOs remains controversial, their potential benefits for medicine are significant and cannot be ignored. In the first GMO experiment, researchers genetically modified E. coli by giving the bacteria the gene it needed to produce insulin.
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When a pathogen or bacteria is recognized, 2 types of cells are created in abundance. Briefly describe what they do.
a) Effector Cell:
b) Memory Cell:
Please help me.
Answers
When a pathogen or bacteria is recognized by the immune system, the adaptive immune response is activated, leading to the production of two main types of cells: effector cells and memory cells.
a) Effector Cell: Effector cells are responsible for carrying out the immediate response to eliminate the pathogen or bacteria. In the context of the adaptive immune response, there are two primary types of effector cells being Cytotoxic T cells (CD8+ T cells) & B cells.
b) Memory Cell: Memory cells are long-lived cells that "remember" the specific antigen from a previous encounter with a pathogen or bacteria. They are derived from the same activated cells that give rise to effector cells. If the same pathogen is encountered again in the future, memory cells can quickly respond and initiate a faster and more effective immune response.