When the receptor cells have registered a Stimulus sensory organs the energy is converted to an electrochemical impulse.
What is meant by electrochemical impulse?They communicate among centers in the central nervous system and they command your muscles to move. Nerve impulse are electrochemical events. Observed as an electrical event , a nerve impulse is called action potential.
Without nerve conduction, the process by which nerve impulses travel along our neurons, none of our perceptions, thoughts, or memories would be possible. Nerve conduction is an electrochemical process, which means it involves the use of electricity generated by chemical molecules.
Stimulus sensory organs like ear, eyes, nose, skin and tongue are called sensory organs. Stimulus is visual, taste, touch, smell and hear.
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how big is the universe? shortanswer
Answer:
94 billion light-years in diameter (that's only the observable part)
which ocean environment is likely to have the lowest net primary productivity?
Answer:
According to a source I found, the central ocean generally has very low primary production, as these areas are far removed from any terrestrial sources of nutrients, and the great depth prevents the deep nutrients from returning to the surface
Explanation:
If you place a piece of paper containing a small letter "d" on the stage, what will the image look like under the microscope?
Organisms that obtain nutrients by breaking down dead and decaying plants and animals are called *
1. autotrophs
2. producers
3. decomposers
4. omnivores
Answer:
decompose
Explanation:
Quick I need some Help, i give crown
Unicellular, performs photosynthesis and has membrane-bound organelles
Unicellular, digests food outside of the cell and has membrane-bound organelles.
What kingdom(s) do they belong to?
Indicate the phase of growth of each of the following hairs:
a. The root is club-shaped
b. The hair has a follicular tag
c. The root bulb is flame-shaped
d. The root is elongated
The hair has a follicular tag is in the phase of growth. The root bulb is flame-shaped is in the phase of growth.The root is club-shaped is in the phase of resting.
The root is elongated is in the phase of growth.Phases of hair growthThere are three distinct phases of hair growth, as outlined below. Anagen phase (growth phase): This is when the hair is actively growing, and it lasts between two and six years.Catagen phase (transitional phase): This is a short, two-week period that begins after the anagen phase, during which hair growth slows down. At any given time, less than 1% of scalp hairs are in this stage.Telogen phase (resting phase):
This is when the hair is no longer growing. Instead, it stays dormant for around 100 days before falling out and being replaced by new hair. At any given time, approximately 10% of scalp hairs are in this stage.
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the binding of a compound to an enzyme is observed to slow down or stop the rate of the reaction catalyzed by the enzyme. increasing the substrate concentration reduces the inhibitory effects of this compound. which of the following could account for this observation? the compound forms a covalent bond with one of the amino acid residues needed for enzyme activity is a competitive inhibitor is a negative allosteric regulator reduces disulfide bonds, causing the enzyme molecules to partially unfold
In the particular case given in the question, the compound is a competitive inhibitor.
Describes enzyme-substrate reactions.Enzymes are biocatalysts. Like other catalysts, it can lower the activation energy and drive the reaction in the desired direction. Because their activity depends on protein folding, they are usually sensitive to the temperature, pH, and salt concentration of the environment in which they work. The substrate enters the active site of the enzyme to form the enzyme-substrate complex. A reaction then takes place, converting the substrate to a product and forming an enzyme-product complex. Now the product is released from the active site of the enzyme.
First, an increase in substrate concentration leads to an increase in the rate of enzyme-catalyzed reactions. This rate increase plateaus when the enzyme molecules become saturated with substrate. The rate of enzyme-catalyzed reactions increases with increasing concentrations of the enzyme.
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most hormones are taken up and degraded by the __________ and __________.
A. liver; kidney
B. spleen; kidney
C. spleen; liver
D. bone marrow; spleen
E. bone marrow; liver
The correct answer is C. Spleen; Liver. Most hormones are taken up and degraded by the spleen and liver.
The spleen is an organ that plays a role in the immune system and helps to filter out old and damaged blood cells. The liver is a large organ that is responsible for filtering out toxins, breaking down hormones, and producing bile. Bone marrow and the kidney are not involved in hormone regulation.
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some constitutive mutations to the laci repressor were found to alter the conformation of its binding site for the . these mutations produced proteins that did not repress the lac operon even when the allolactose inducer was absent. another type of laci mutant was found in which the lac operon even when the allolactose inducer was present. these mutations were termed mutants. superrepressor mutants were found to alter the conformation of the repressor binding site for the such that the repressor could continue to bind to the operator. if lactose was the only carbon source made available to an e. coli bacterium, a superrepressor mutation in laci would .
In constitutive mutations, the defected gene product is continuously formed from the defected gene instead of the wild type. There remains no control over the expression of gene.
Lac operon is an aggregate of multiple genes all controlled by a single promoter that work in the metabolism of lactose in the body. There are three genes in lac operon: gene z , gene y and gene a.
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HELP!!!!
Will and Grey got new RC cars for Christmas. They wanted to race the cars in the front yard. After charging the batteries, they tried to race but the cars wouldn't work. Using your knowledge of waves, what would be the best solution to the interference they are experiencing?
Take the cars back to the store, they are clearly broken.
Change the batteries, they didn't charge all the way.
Change the frequency of the one of the cars to a different one.
There is no good solution.
Which of the following correctly identifies the proper nitrogen base pairing in DNA
replication?
A:T;G:C
T:C;G:A
A:U; G:C
T:U; C: G
Answer:
A:T;G:C
Explanation:
adenine goes with thymine unless it's mRNA and it will go with uracil. guanine and cytosine always go together.
The nitrogenous base pair A:T;G:C is the proper nitrogen base pairing in DNA replication. The correct option is A.
What is base pairing?A base pair is a primary component of double-stranded nucleic acids that consists of two nucleobases that are hydrogen-bonded to one another.
They are the cornerstones of the DNA double helix and make a contribution to both DNA and RNA's folded structure.
A base pair is made up of two matching DNA nucleotide bases that join to form a ranks of the DNA ladder.
DNA is made up of two interconnected strands that wind around one another to form a twisted ladder-like structure known as a double helix.
There are four major types of DNA nucleotides in DNA adenine (A), thymine (T), guanine (G), and cytosine (C).
Here, purine will pair with pyrimidine means, adenine will pair with thymine and guanine will pair with cytosine.
Thus, the correct option is A.
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Onepage review on why understanding gas and vapors in a work setting is important and what we can do in our workplace to prevent accidents with gases and vapors.
Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.
In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.
Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.
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During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material —
a increases the genetic variation
b reduces the diploid number to the haploid number
c increases the haploid number to the diploid number
d reduces the probability of mutations
Answer:
A
Explanation:
State the beginning reactants and the end products glycolysis, alcoholic fermentation, the citric acid cycle, and the electron transport chain. Describe where these processes take place in the cell and the conditions under which they operate (aerobic or anaerobic), glycolysis: alcoholic fermentation: citric acid cycle: electron transport chain
Glycolysis, the initial step in cellular respiration, begins with glucose as the reactant and produces two molecules of pyruvate as the end product. This process occurs in the cytoplasm of the cell and is anaerobic, meaning it can occur in the absence of oxygen.
Alcoholic fermentation begins with pyruvate, which is converted into ethanol and carbon dioxide. This process takes place in the cytoplasm of yeast cells and some bacteria, operating under anaerobic conditions. Alcoholic fermentation is utilized in processes such as brewing and baking.
The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid cycle, starts with acetyl-CoA as the reactant. Acetyl-CoA is derived from pyruvate through a series of enzymatic reactions. The cycle takes place in the mitochondria of eukaryotic cells. During the citric acid cycle, carbon dioxide, ATP, NADH, and FADH2 are produced as end products. This cycle operates under aerobic conditions, meaning it requires the presence of oxygen.
The electron transport chain is the final stage of cellular respiration. It takes place in the inner mitochondrial membrane of eukaryotic cells. The reactants for this process are the electron carriers NADH and FADH2, which were generated during glycolysis and the citric acid cycle. The electron transport chain uses these carriers to generate ATP through oxidative phosphorylation. Oxygen acts as the final electron acceptor in this process, combining with protons to form water. The electron transport chain operates under aerobic conditions, as it requires the presence of oxygen to function properly.
Overall, glycolysis and alcoholic fermentation are anaerobic processes occurring in the cytoplasm, while the citric acid cycle and the electron transport chain are aerobic processes taking place in the mitochondria
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natural selection is based on all of the following except question 27 options: a) individuals who survive longer tend to leave more offspring than those who die young. b) individuals need to adapt to their environments and, thereby, evolve c) genetic variation exists within populations. d) the best-adapted individuals tend to leave the most offspring.
The correct is option (c), as In natural selection individuals do not need to adapt to their environments and, thereby, evolve.
Natural selection is a process through which a population with favourable set of characters is selected by the nature to survive over those individual who lacks them. A population is comprised of varied number of individual having a wide variety of chromosomes and allels for a single trait. Due to this variation some characters are more favoured by the environment and thus get selected. These are regarded as the elements of natural selection's evolutionary mechanism.
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Why do you think the narrator used the term “successful mistakes” for his chromosomes?
which of the following is not a major factor in where and how air moves?
a. pressure
b. temperature
c. density
d. type of gas
C. Density. The following are the main variables influencing the global atmospheric circulation: uneven surface heating of the soil. seasonal variations in precipitation and temperature. Earth turning on its axis.
Which of the following is missing from the air response?Air does not contain hydrogen gas; instead, it is mostly composed of trace gases including carbon dioxide and water vapor, as well as 78% nitrogen and 21% oxygen.
Which of the following is not an atmospheric component?The quantity of water vapor present in the air is referred to as humidity. Since sunlight is not dependent on the atmosphere like the other alternatives mentioned above, it is not a component of weather.
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blow up my notif's
pRe-K fIgHt
Explanation:
ermmmmmm alrrrr hahaha
Answer:
ima asume dis is fine
Explanation:
irjpbwjoqe23ni22ri2b2bnovbobvojbvrtbv[jrb[jjbo2bobfoueboububub[obubcoborcjbjbcuiebvobeovbubvobvwbub[bvobubbovjowennbvibvbjfkf;wbvecjnnnndddddddddddkkkkkkkkkkkkkkkkkkkkkcfmmmmmmg
what animals can be used to replace human parts?
cattle
sheep
goat
pig
Answer:
Pig
Explanation:
Pig valves are already used successfully in heart transplants. Human-to-human organ transplantation has only been around since the 1950s, and scientists have been working on animal-to-human transplants for almost that long. In the '60s, Keith Reemtsma experimented with transplanting chimpanzee kidneys into humans.
Answer:
Pig
Explanation:
This process is called Xenotransplantation. The animal organ, probably from a pig or baboon could be genetically altered with human genes to trick a patient's immune system into accepting it as a part of its own body. (Wikipedia)
Which of the following correctly compare selective breeding and genetic modification?
Group of answer choices
A. Genetic modification is choosing seeds with preferred genetic traits to be grown and selective breeding is picking preferred genes to be implanted within a bred offspring.
B. Genetic modification involves the transfer of genes from one organism to another and selective breeding is choosing parents within the same species to mate together.
C. Genetic modification involves human intervention but selective breeding does not involve human intervention.
D. Genetic modification is safe for organisms but selective breeding produces crops that can be unhealthy to eat.
Answer:
B
Explanation:
B. Genetic modification involves the transfer of genes from one organism to another and selective breeding is choosing parents within the same species to mate together.
why are omega - 3 fatty acids important for the diet?
Answer:
Omega-3 fatty acids are one of the "good" types of fat. They may help lower the risk of heart disease, depression, dementia, and arthritis. Your body can't make them. You have to eat them or take supplements.
Omega-3 fatty acids may help to:
Lower blood pressure.
Reduce triglycerides.
Slow the development of plaque in the arteries.
Reduce the chance of abnormal heart rhythm.
Reduce the likelihood of heart attack and stroke.
Lessen the chance of sudden cardiac death in people with heart disease.
Which sentence from the excerpt best illustrates Noah’s conflict? "Is Joey writing a B & B to Grandma and Grandpa Eberle?" She explained—not too patiently—that a B & B letter is a bread and butter letter you write to people to thank them for having you as their houseguest. My brother Joey had been sent to my other set of grandparents, who live in a normal suburb in Connecticut. My mother insisted that I write a B & B letter to my grandparents
The sentence best illustrates Noah's conflict "My mother insisted that I write a B & B letter to my grandparents."
This sentence best illustrates Noah's conflict as it shows that he is in disagreement with his mother's expectation for him to write a letter to his grandparents, possibly indicating that he does not want to do it or is frustrated with the task.
E. L. Konigsburg's elementary school book The View from Saturday tells the tale of Mrs. Olinksi's academic bowl team. The sixth-graders don't seem like the kind of kids who would be friends, but as the novel progresses, we gradually understand how these students come to be friends and work as a team. The narrative is distinctive in that it alternates between the perspectives of each pupil and Mrs. Olinksi, giving the tale a dynamic quality.
The complete question is:-
Use “The View from Saturday” to answer questions 1-5. Which sentence from the excerpt best illustrates Noah’s conflict? “Is Joey writing a B & B to Grandma and Grandpa Eberle?” She explained—not too patiently—that a B & B letter is a bread and butter letter you write to people to thank them for having you as their houseguest. My brother Joey had been sent to my other set of grandparents, who live in a normal suburb in Connecticut. My mother insisted that I write a B & B letter to my grandparents.
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A physical or chemical agent that changes the nucleotide sequence of DNA is called a/an: a. Transcription factor b. Mutagen c. Protein kinase d. Antioxidant
A physical or chemical agent that changes the nucleotide sequence of DNA is called a mutagen (option b). Mutagens are substances or factors that can cause mutations in the DNA. These mutations occur when the nucleotide sequence, which is the specific arrangement of nucleotides in a DNA molecule, is altered.
Mutagens can be categorized into two main types: chemical mutagens and physical mutagens. Chemical mutagens include substances like reactive oxygen species, alkylating agents, and base analogs, which interact with the DNA and cause changes in the nucleotide sequence. Physical mutagens, on the other hand, include factors like ultraviolet (UV) radiation and ionizing radiation, which can cause DNA damage and lead to changes in the nucleotide sequence.
The other options provided, such as transcription factors, protein kinases, and antioxidants, are not agents that directly alter the nucleotide sequence of DNA. Transcription factors are proteins that regulate gene expression, protein kinases are enzymes that modify other proteins by adding phosphate groups, and antioxidants are substances that prevent or slow down cell damage caused by free radicals.
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The fact that the outer membrane of the nuclear envelope has bound
ribosomes allows one to most reliably conclude that 
Answer:
At least some of the proteins that function int he nuclear envelope are made by the ribosomes on the nuclear envelope.
Hope this helps
What is Avogadro's number?
0 23 X 106
O 2.06 X 1023
O 6.02 X 1023
O 2
Answer:
6.02 × 10^23 is his number
During adolescence, the lungs will _________ in weight and the heart will ___________ in size.
During adolescence, the lungs will increase in weight and the heart will increase in size. The lungs will increase in weight and the heart will increase in size during adolescence.Adolescence is the transition period between childhood and adulthood. It is characterized by rapid physical, physiological, and psychological changes.
These changes occur due to hormonal influences on the body, which lead to growth, development, and maturation.During adolescence, the lungs increase in weight due to the expansion of lung tissue. This expansion is due to the maturation of lung structures, such as alveoli and bronchioles, which increase in number and size. As a result, the lungs can accommodate more air, which increases oxygen intake and carbon dioxide elimination.
In addition, the heart increases in size during adolescence due to the increase in muscle mass. This increase is due to the increase in cardiac output required to supply oxygen and nutrients to the growing body. As a result, the heart is better equipped to handle physical stress and exercise, which are essential for maintaining a healthy body weight and cardiovascular fitness.
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What type of molecule is sometimes found spanning a cell's plasma membrane with part of the molecule on one side of the membrane, part embedded in the membrane, and part on the other side
if two loci act independently during meiosis: a. they most likely contain the same gene b. they are most likely found on the same chromosome c. they are most likely found on different chromosomes d. a and b e. a and c
If two loci act independently during meiosis, they are most likely found on different chromosomes. If two loci are on the same chromosome, they can be inherited together and are not considered independent. The correct option for the given question is c) .
This statement is true because loci are the position of a gene on a chromosome and meiosis is a process that involves the separation of chromosomes. During meiosis, homologous chromosomes pair up and separate during the first meiotic division. The separation of homologous chromosomes is random and independent of each other.
This means that the genes located on different chromosomes separate independently during meiosis. The genes located on the same chromosome can segregate together if they are close to each other, which is called linkage.
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Match each term to its description.Terms:AdaptationEndangered speciesEvolutionExtinctionDefinitions:A) A species that is at risk of extinctionB) Structural or behavioral characteristics favored in a particular environmentC) Change in a population over timeD) Death of all members of a species
Adaptation is a biologic mechanism or characteristic by which adjust to changes on the environment or to new environments. Therefore, its definition is B) Structural or behavioral characteristics favored in a particular environment.
Endangered species are species that are in danger, at risk of extinction. Therefore, its definition is A) A species that is at risk of extinction.
Evolution refers to changes and adaptations in a population over several generations. Therefore, its definition is C) Change in a population over time
Extinction refers to when all of the individuals of a species died, and the species no longer exist. Therefore, its definition is D) Death of all members of a species
if anyone has a biology question let me know i may be able to help you out, thanks
Answer:
Ok! thank so much for letting me know!