{{c1::depolarization}} is the process of membrane potential reversal
Answers
Depolarization is the process of membrane potential reversal in which the electric charge of a cell membrane shifts from a negative to a more positive value.
This occurs when voltage-gated ion channels open, allowing positively charged ions such as sodium (Na+) and calcium (Ca2+) to flow into the cell, while negatively charged ions like potassium (K+) flow out. The influx of positive ions causes the membrane potential to rise, reducing the difference between the inside and outside of the cell.
Depolarization is a crucial part of the action potential, which is an electrical signal that propagates along neurons and other excitable cells to facilitate communication within the nervous system. In summary, depolarization plays a vital role in cellular communication by reversing the membrane potential and enabling the transmission of electrical signals throughout the body. Depolarization is the process of membrane potential reversal in which the electric charge of a cell membrane shifts from a negative to a more positive value.
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Related Questions
Do you think the corpse flower’s smell meets the definition of an adaptation
Answers
Answer:
Yes. Because the flower blooms for only a short time, it needs to attract pollinators quickly so that it can reproduce. If it didn’t have this adaptation, the plant might not be able to produce offspring.
Explanation:
plato
Can a psychiatrist perform a physical exam?
Answers
Yes, a psychiatrist can perform a physical exam on a patient who is suffering from a mental illness.
Psychiatry is a branch of science or medicine which mainly focuses on the treatment, diagnosis as well as prevention of mental disorders some of which include schizophrenia, bipolar disorder etc. A medical doctor who practices psychiatry is known as a psychiatrist.
The psychiatrists are trained medically and hence they can suggest medications to patients and also perform physical exams on them. Performing a physical exam of the patient is important before prescribing medicine to a patient in order to avoid any serious side effects.
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How do some chemicals increase the risk of a person getting cancer ?
A. By causing an increase of toxins in the skin
B. By causing cell mutations
C. By causing a deficiency of vitamin D
D. By causing a decrease in the immune response
Answers
Some chemicals increase the risk of a person getting cancer by causing cell mutations. Hence, option B is correct.
What do you mean by Mutations?Mutations may be defined as the sudden, stable, and inheritable change in the genetic material of the living entities.
Chemicals like ethidium bromide, acridine orange, benzopyrene, etc are carcinogens, i.e. the agents of causing cancer.
These agents are responsible for causing mutations in the cell which leads to cancer.
Therefore, some chemicals increase the risk of a person getting cancer by causing cell mutations.
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The area of the brain that contains gray matter and is responsible for autonomic functions such as hunger, satiety (fullness), temperature, blood pressure and pituitary control is called the
Answers
Hypothalamus. This important part of the brain is located deep within the brain and is responsible for controlling many of the body’s autonomic functions.
The hypothalamus is composed of gray matter and is responsible for producing hormones that regulate hunger, satiety, temperature, blood pressure and pituitary control. It also helps to regulate aspects of the body’s circadian rhythm such as sleep and wakefulness. It is also responsible for regulating some emotions including fear, pleasure and anger. The hypothalamus is connected to many other areas of the brain through a network of nerves and hormones. It communicates with the pituitary gland which is responsible for producing hormones that regulate many bodily processes including growth, metabolism and reproduction. The hypothalamus also communicates with other parts of the brain such as the amygdala, which is responsible for emotions and the hippocampus, which is important for memory.
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Compare and contrast food webs and food chains.
A pyramid of energy has 100 units of energy available for the first trophic level. How many units would be available for the primary consumers? How did you calculate this?
In the following food chain, which part contains the most biomass?
Green plants → rabbits → owls
What happens to the energy that a rabbit uses for staying warm and running from predators?
Answers
About 90% of energy is lost at each trophic level, while in the food chain of green plants → rabbits → owls the green plants contains the most biomass. Moreover, the energy that a rabbit uses for staying warm and running from a predator is lost as a heat source during its metabolism.
What is a food chain?A food chain is a group or interconnected network of organisms that live in a given ecosystem and they are associated through consumer - producer relationships.
In a food chain, the most energy is lost as heat at each trophic level, approximately 90-95 percent of energy is lost as heat due to the metabolism of the organism in each of these levels.
Therefore, with this data, we can see that food chains relate organisms in a given ecosystem and energy at each trophic level is lost as heat during metabolism.
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Answer:
Explanation:
1. Both food chains and food webs show the flow of energy in an ecosystem. However, food chains illustrate one path of energy, while food webs show multiple paths of energy and interactions among food chains.
2. About 90 percent of the energy at each trophic level is lost and not available to the next level. If the producer level has 100 units of energy, then 10 units of energy are available for the primary consumers.
3. Green plants. Just as 90 percent of the energy at each trophic level is lost, the amount of biomass is typically highest at the primary producer level and decreases in higher trophic levels.
4. Energy is lost to the environment in the form of heat.
Which of the following is NOT molecular evidence that supports the theory that all life evolved from a single common ancestor?A. All life has a universal genetic code that works the same way in every organism on Earth.B. ATP is a universal energy storage molecule for all organisms.C. All proteins in every organism are formed from the same 20 amino acids.D. All organisms have Pentalipid membranes surrounding them.
Answers
The correct answer is D. All organisms have Pentalipid membranes surrounding them. Most organisms have a bilipid layer, although several microbes have different characteristics in its cell membrane.
Use examples to describe three of the four main themes that connect all the information in biology
Answers
C6H12O6 + 602 --> 6CO2 + 6H20 + ATP
In the reaction above, CoH12O6 and 602 are called the
Answers
Answer:
Reactants
Explanation:
In the reaction:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP
The reaction is a metabolic reaction that produces energy from the breakdown of glucose when it reacts with oxygen.
In the reaction C₆H₁₂O₆ and O₂ are the reactants.
These are the raw materials need for the reaction to proceed in the right direction successfully.
On the right hand side, we have the products.
What is the name given to the process by which a parent cell becomes two identical daughter cells?(1 point)
A. meiosis
B. differentiation
C. senescence
D. mitosis
Answers
Answer:
D. mitosis
Explanation:
Mitosis is the process whereby the parent cell divides into two daughter cells that are identical.
Mitosis is the process by which a parent cell becomes two identical daughter cells. So, the correct option is (D)
What is mitosis ?Mitosis is the process in which cell duplication, or reproduction takes place. Wherein one parent cell gives rise to two genetically identical daughter cells. Mitosis is the duplication and distribution of chromosomes which carries the genetic information.
It is an important process in single celled eukaryotes as it is the mode of asexual reproduction. The main function of Mitosis is to produce more cells.
Life starts with single cell in multicellular organism which is formed from two gametes. Mitosis takes place one cell is divided into two cells as this single celled multicellular organism only carries genetic information in the form of DNA but not enough cells. These two cells further divide mitotically into four cells, then into 8 , then 16 and then 32.
It is essential to life because it give rise to new cells for growth and replacement of dead cells. It may take few minutes or some hours, depending on the type of cells. It depends on time, temperature and chemicals.
Thus, mitosis is the process by which a parent cell becomes two identical daughter cells. So, the correct option is (D).
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What are the regions where dna-binding proteins can make direct contact with exposed nucleotides?.
Answers
Answer:
major and minor grooves
Explanation:
none
Lipids are primarily composed of what elements?
Answers
Answer:
Lipids are composed of carbon, hydrogen and oxygen atoms, and in some cases contain phosphorus, nitrogen, sulfur and other elements.
Lipids are primarily composed of carbon, hydrogen, and oxygen. They are also known as fats, oils, and waxes. Lipids are essential for the structure and function of cells, and they provide energy for the body.
Lipids are important for the body in a number of ways. They help to:
Store energy: Lipids are a concentrated form of energy, and they can provide the body with energy when it is needed.
Form cell membranes: Lipids are the main component of cell membranes, which are the outer layer of cells. Cell membranes protect cells and help to control what enters and leaves the cells.
Produce hormones: Lipids are used to produce some hormones, such as testosterone and estrogen.
Absorb fat-soluble vitamins: Lipids help to absorb fat-soluble vitamins, such as vitamins A, D, E, and K.
Lipids are an essential part of the diet, and they should be included in a balanced diet. However, it is important to eat healthy fats, such as those found in avocados, nuts, and seeds. These fats are good for the heart and can help to reduce the risk of heart disease.
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which diagnostic study is best at delineating between soft tissue and bony structures for diagnosing sinus conditions?
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The diagnostic study that is best at delineating between soft tissue and bony structures for diagnosing sinus conditions is a sinus computed tomography (CT) scan.
A sinus CT scan provides detailed cross-sectional images of the sinuses, allowing for visualization of both soft tissue and bony structures. It can help identify abnormalities, such as sinus inflammation, polyps, tumors, or anatomical variations.
The CT scan provides more precise information compared to other imaging techniques, making it a valuable tool in diagnosing and assessing sinus conditions.
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A Chlorella cell viewed through a microscope is 0.00005 m wide when the magnification is 2000.
What is the actual size of the cell?
Answers
Answer:
0.0025micrometer.
Explanation:
To calculate the actual size of the image, the formula to be used is
Actual size=Image size÷magnification.
The image size is 0.00005 wide
Magnification is 2000
First, convert the image size to micrometer.
=0.00005 × 1000000
50micrometers.
Actual size= 50÷2000
Actual size = 0.0025
The actual size of the cell will be
"0.0025".
MagnificationAccording to the question,
Image size = 0.00005 or,
= 0.00005 × 1000000
= 50 micrometers
Magnification = 2000
We know the relation,
→ Actual size = \(\frac{Image \ size}{Magnification}\)
By substituting the above values,
= \(\frac{50}{2000}\)
= 0.0025
Thus the above answer is appropriate.
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of the following actions, which would be the most beneficial in stopping the dead zones from reappearing in the Gulf of Mexico in the future? Restore inland and coastal wetland areas that have been destroyed or degraded In the Mississippi River Basin, use fertilizers on steeply sloped land Develop new standards for each step in the offshore drilling process
Answers
The most beneficial action to stop the dead zones from reappearing in the Gulf of Mexico in the future would be to restore inland and coastal wetland areas that have been destroyed or degraded (option A).
Deаd zones аre аreаs of wаter where oxygen levels аre so low thаt mаrine life cаnnot survive. They аre cаused by аn excess of nutrients, such аs nitrogen аnd phosphorus, which come from аgriculturаl runoff аnd other sources. These nutrients stimulаte the growth of аlgаe, which then die аnd decompose, consuming oxygen in the process. By restoring wetlаnd аreаs, the excess nutrients cаn be аbsorbed, preventing them from reаching the Gulf of Mexico аnd contributing to the formаtion of deаd zones.
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is the hexokinase reaction at equilibrium in cells? for the reaction catalyzed by the enzyme hexokinase the equilibrium constant, , is . in living e. coli cells, , , , and . is the reaction at equilibrium in e. coli?
Answers
The reaction catalyzed by the enzyme hexokinase (Glucose + ATP Glucose 6-phosphate + ADP) has an equilibrium constant of 7.8 x 102.
In living E. coli cells, the concentrations of ATP, ADP, glucose, and glucose-6-phosphate are 5 mM, 0.5 mM, 2 mM, and 1 mM respectively. This means that the reaction is not at equilibrium in E. coli cells, and that the reaction favors the side with ATP, ADP, and glucose.
The hexokinase reaction is an important enzyme-catalyzed reaction that is involved in many biochemical processes in cells. In this reaction, ATP is converted to ADP and glucose is converted to glucose-6-phosphate, with the release of energy. In living cells, the concentrations of ATP, ADP, glucose, and glucose-6-phosphate are carefully regulated to ensure that the reaction is kept at equilibrium.
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Discuss the advantages of plant hormones in the growth and development of plants. (at least 100 words)
Answers
14)
You have been collecting data to determine the average monthly temperature for a particular year. You have 30 samples recorded in degrees Celsius each month. You want to show temperature trends over the entire year. What would be the BEST way to represent your data to illustrate the average temperature for each month?
Answers
Answer:
A line graph to represent all the data collected
Answer: For anyone else who needs this, the answer is 5.
which is the best definition of generation time? multiple choice 4 the time it takes for the number of cells in a population to double. the 24 hours it takes for cells to achieve maximum growth rate. the time it takes for a bacterial cell to complete one round of mitosis. the time it takes for a bacterial cell to duplicate its dna. the time it takes it takes for a bacterial population to exponentially decrease.
Answers
The time it takes for the number of cells in a population to double is called Generation time.
The generation time measures how long it takes a bacterium under ideal conditions to produce two daughter cells. The generation time of the majority of medically relevant bacteria is 20 minutes. Some might even need more time—18 to 24 hours.The amount of time it takes for a colony of bacteria to double in size is known as the generation time. The generation time for various bacteria ranges from a few minutes to several hours. Bacteria multiply through geometric progression—their population doubles every generation—thanks to binary fission.The generation time of an organism varies greatly among species and plays a significant role in the life cycle, life history, and evolution of that species.To know more about Generation time check the below link:
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The diagram shows three large carbohydrate polysaccharides.
Cellulose
Starch
Glycogen
Highly branched (glycogen)
Linear (cellulose)
Branched (starch)
What is the main difference between starch and glycogen?
O A. Humans can chew starch but cannot chew glycogen
B. Humans make glycogen but cannot make starch, which is only found in plants.
O C. Humans dissolve glycogen in blood plasma but cannot dissolve cellulose.
D. Human muscle cells can absorb cellulose but cannot absorb glycogen and starch.
Answers
Answer:
B.) Humans make glycogen but cannot make starch, which is only found in plants
Explanation:
Humans store carbohydrates as glycogen, whereas plants store extra carbohydrates as starch.
help i need help help me
Answers
Answer:
horsetail is a seedless vascular plant
club moss is a seedless vascular plant
Fern is a seedless vascular plant
Moss is a non vascular plant
Liverwort is a non vascular plant
Hornwort is a non vascular plant
Succession occurs because _______. a. organisms gradually change the environment b. climax communities are not possible c. dominant organisms drive out pioneer species d. ecosystems never reach a sustainable point please select the best answer from the choices provided a b c d
Answers
Succession occurs because organisms gradually change the environment.
What is Succession?Natural communities replace (or "succeed") one another over time through a process known as succession. For instance, if an old farm field in the Midwest of the United States is abandoned and left alone for many years, it eventually transforms into a forest as trees entirely occupy the field.Every plant community fosters the circumstances necessary for other plant communities to flourish. For instance, early invaders like grasses may enrich the soil with nutrients, and later invaders like shrubs and trees may provide cover and shade. When a "climax" community develops, succession temporarily halts; these communities maintain a state of relative balance until a disruption triggers the succession process to resume.To learn more about succession, refer to
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Which process turns glucose into energy?
Breathing
Cell division
Cellular respiration
Photosynthesis
Answers
Answer:
cellular respiration
Explanation:
A group of cells is assayed for dna content immediately following mitosis and is found to have an average of 12 picograms of dna per nucleus. How many picograms of dna would be found in a nucleus at the end of g1 and the end of g2?.
Answers
16 picograms of DNA would be found in a nucleus at the end of g1 and 16 picograms of DNA at the end of g2.
What is DNA and how many picograms of DNA would be found in a nucleus at the end of g1 and the end of g2?DNA is the deoxyribonucleic acid which is the genetic complement of the human genetic compartment .DNA consist of nucleotides , chromosomes and two strands with anti parallel polarity which mean opposite in direction.There is a thread like stained bodies inside the DNA which was discovered to be chromatin body.The mass of DNA would be 16 picograms of DNA would be found in a nucleus at the end of g1.And the mass of DNA would be 16 picograms at the end of g2 which is required .Hence 16 picograms of DNA would be found in a nucleus of cell assayed for DNA content immediately following mitosis .To know more about DNA visit:
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the constriction of blood vessels in the scalp, which limits the oxygen supply to the brain is a .
Answers
An intracranial stenosis is a narrowing of the blood arteries in the scalp that reduces the oxygen supply to the brain.
What causes the scalp's blood arteries to constrict, limiting the amount of oxygen that can reach the brain?A narrowing of the arteries within the brain is known as intracranial stenosis. It is brought on by a buildup of plaque in the blood vessel's inner wall, just like carotid stenosis in the neck. The part of the brain that the damaged veins serve has less blood flow as a result of the blood vessels' constriction.
Which happens at the initial phase of stress?Your body's defenses begin to build during the alarm stage, when your central nervous system is awakened. A fight-or-flight reaction is produced at this SOS stage. During the resistance stage, your body starts to heal and restore normal heart rate, blood pressure, etc.
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The film Ape Genius demonstrated all of the following about chimpanzees, EXCEPT: a. Chimps like to play in water for fun, not just to cool off b. Spear hunting by chimps is the first evidence of a non-human making and using deadly weapons c. Chimps seem to have understanding of intent and a sense of justice when it comes to how they view the behavior of other chimps d. Chimp cultural traits and behaviors are consistent across different populations and never vary
Answers
The film Ape Genius demonstrated all of the following about chimpanzees except d. Chimp cultural traits and behaviors are consistent across different populations and never vary.
What is Ape Genius?Ape Genius is a 2008 documentary film directed by German film producer, writer and director Volker Barth. It studies the behavior of chimpanzees in a variety of settings such as in the lab, in the forest, in the zoo, and in the savannah. It aims to study and understand the mental capabilities of chimpanzees and the cognitive behavior they display.In the documentary film Ape Genius, three things were demonstrated about chimpanzees:Chimps seem to have an understanding of intent and a sense of justice when it comes to how they view the behavior of other chimps. Spear hunting by chimps is the first evidence of a non-human making and using deadly weapons.Chimps like to play in water for fun, not just to cool off. Chimp cultural traits and behaviors are not consistent across different populations and they vary.
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What is the relationship between a zebra and a lion
Answers
Answer:
The Zebra's The Lion's Dinner
Explanation:
I don't really need to explain this much I don't think. The Zebra's the prey, and the Lion is the hunter. Thanks! Have a good day!
Answer:
the relationship between a zebra and a lion would be prey(zebra) and predator(lion).
Explanation:
the zebra is the prey because it is an herbivore and does not hunt other animals. the lion is the predator because it is an carnivore meaning it hunts other animals(usually weaker than said predator).
The code for a DNA strand is CGTA. What is the complementary strand?
Answers
Explanation:
The complementary DNA strand of the sequence ATGC will be TACG. The complementary base pairing in DNA is as per the...
The DNA molecule is composed of two long complementary chains of nucleotides. The complementary DNA sequence of CGTA is GCAT.
The DNA molecule is composed of two antiparallel strands of nucleotides linked together by hydrogen bonds.
In DNA, there are four types of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytocine and Thymine).
In RNA, Thymine bases are replaced by Uracil bases.
According to the base pair rules, Adenine (A) always pairs with Thymine (T), whereas Cytosine (C) always pairs with Guanine (G).
In conclusion, the complementary DNA sequence of CGTA is GCAT.
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Identify a change in your environment that might affect homeostasis. Explain using the terms: stimulus, control center, set point, receptors, effectors, and imbalance in your answer.
Answers
Answer:
If you are sitting in a chair in a room and the temperature outside the room changes, that would be a change in your environment. If the temperature outside the room changes and the temperature inside the room changes, that would be the stimulus for a change in your environment that might affect homeostasis. The set point for the temperature in the room is the temperature that the control center (the thermostat) is set at. The receptors in the room are the sensors that detect the temperature. The effectors in the room are the things that adjust the temperature, like the heater or the air conditioner. If the temperature outside the room changes and the temperature inside the room changes, that would be an imbalance.
What is a stimulus?
A stimulus is a change in the environment that can cause a reaction in an organism.
What is a control center?
A control center is a region of the body that is responsible for regulating certain functions.
What is a set point?
A set point is a specific value that the body sets for a particular function.
What are receptors?
Receptors are specialized cells that detect changes in the environment and send signals to the control center in the body.
What are effectors?
Effectors are muscles or glands that respond to signals from the control center and produce a change in the body.
What is an imbalance?
An imbalance is a condition in which there is a difference in the amount of a substance or energy between two systems.
Explanation:
Let me know if you need elaborating on any of the concepts above and I'd be happy to do so. Feel free to give me Brainliest if that helped :)
Distinguish between catabolism and anabolism, giving an example of each reaction as endergonic or exergonic:
Answers
Answer: Anabolism builds complex molecules from simpler ones, while catabolism breaks large molecules into smaller ones.
Explanation:
a-Glycerol reacts with fatty acids to make lipids:
CH2OHCH(OH)CH2OH + C17H35COOH → CH2OHCH(OH)CH2OOCC17H35
Simple sugars combine to form disaccharides and water:
C6H12O6 + C6H12O6 → C12H22O11 + H2O
c-During cellular respiration, glucose and oxygen react to yield carbon dioxide and water
C6H12O6 + 6O2 → 6CO2 + 6H2O
In cells, hydroxide peroxide decomposes into water and oxygen:
2H2O2 → 2H2O + O2
Which of the following is an autotroph?
A. A consumer
B. A prey
C. A predator
D. A producer
Answers
Answer:
D) producer
Explanation:
An autotroph, or main producer, is a living creature that uses carbon from basic molecules like carbon dioxide to build complex organic compounds, usually with the help of light or inorganic chemical processes.
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