what is a membrane potential and how is it generated?
Answers
Answer:
Differences in the concentrations of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Typical values of membrane potential are in the range –40 mV to –70 mV. ... These concentration gradients provide the potential energy to drive the formation of the membrane potential.
Explanation:
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Related Questions
The plant kingdom contains only _____ (self feeders) and the fungi kingdom contains only _____ (eats other living things.
Answers
The plant kingdom contains only self-feeders, and the fungi kingdom contains only organisms that eat other living things.
The plant kingdom contains only self-feeders, and the fungi kingdom contains only organisms that eat other living things. Higher plants have been classified into two major groups that are namely: Angiosperm and Gymnosperm. These two groups of higher plants are the vascular plants i.e. possess vascular tissues, that propagate by seeds. The Fungi Kingdom is an ancient and diverse group of organisms with an evolutionary history that dates back to the Precambrian.
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if equal masses of sand and water are heated to the same temperature, which sample will absorb more energy? base
your argument on the definition of heat and what you learned from the experiment.
i need help fast please.
Answers
Answer:
The sand will absorb more energy. This is because it is a solid, and more of a conductor of heat. Water on the other hand is not a conducter of heat, You can observe that even more when temperatures are equal.
Explanation:
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Ben measures the height of two bottles. One is 12 centimeters and the other is 15 centimeters. In millimeters what is the difference of the two heights
Answers
The difference in height between the two bottles is 30 millimeters.
To calculate the difference in height between the two bottles in millimeters, we need to convert the heights from centimeters to millimeters and then subtract one from the other.
First, we convert the height of the first bottle from centimeters to millimeters. Since there are 10 millimeters in a centimeter, we can multiply the height of 12 centimeters by 10 to get the height in millimeters:
12 centimeters * 10 millimeters/centimeter = 120 millimeters.
Next, we convert the height of the second bottle from centimeters to millimeters using the same conversion factor. We multiply the height of 15 centimeters by 10:
15 centimeters * 10 millimeters/centimeter = 150 millimeters.
Now that we have both heights in millimeters, we can calculate the difference. We subtract the height of the first bottle from the height of the second bottle:
150 millimeters - 120 millimeters = 30 millimeters.
Therefore, the difference in height between the two bottles is 30 millimeters.
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primary tissue of tendons and ligaments?
Answers
Answer:
fibrous connective tissue
Explanation:
Ligaments and tendons are both made up of fibrous connective tissue, but that’s about where the similarity ends. Ligaments appear as crisscross bands that attach bone to bone and help stabilize joints. For example, the anterior cruciate ligament (ACL) attaches the thighbone to the shinbone, stabilizing the knee joint.
Tendon, tissue that attaches a muscle to other body parts, usually bones. Tendons are the connective tissues that transmit the mechanical force of muscle contraction to the bones; the tendon is firmly connected to muscle fibres at one end and to components of the bone at its other end. Tendons are remarkably strong, having one of the highest tensile strengths found among soft tissues.
A ligament is the fibrous connective tissue that connects bones to other bones. It is also known as articular ligament, articular larua,[1] fibrous ligament, or true ligament. Other ligaments in the body include the:
physiology is the study of
Answers
Answer:
Physiology is the science of life.
Explanation:
use the periodic table land your knowledge of the element to wright down the names of the following elements 1. the only metal that is liquid at room temperature and has the symbol Hg. 2. The semi metal that lies to the left of phosphorus 3. the metal that lies below baron 4 the gas with the atomic number 7? 5 The metal with the atomic number 19 6. the element that is part of the compound table the symbol Na
Answers
1. Mercury (Hg)
2. Antimony (Sb)
3. Lead (Pb)
4. Nitrogen (N)
5. Potassium (K)
6. Sodium (Na)
What breaks the ozone molecule
apart?
O UV rays
O x-rays
O Gamma rays
Answers
I am sorry if it’s wrong I just guessed cause I didn’t know it
If a 4 kg object is moving 5 m/s, how much kinetic energy does it have?
Answers
Answer:
K.E = 50 J
Explanation:
Given data:
Mass of object = 4 Kg
Speed of object = 5 m/s
K.E = ?
Solution:
Formula:
K.E = 1/2mv²
by putting values,
K.E = 1/2 × 4 Kg × ( 5m/s)²
K.E = 1/2 × 4 Kg ×25 m²/s²
K.E = 50 J (Kgm²/s² = J)
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Information about the four organisms can be found on the Internet. Use credible websites to find answers to the questions you developed in part A. Based on this data, draw your own dichotomous key.
Answers
Answer: decomposers, parasites, predators, and bacteria
Explanation:
Answer:
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Explanation:
Which outcome results when a liquid is heated?
Answers
Answer:A given liquid will evaporate more quickly when it is heated. This is because the heating process results in a greater fraction of the liquid's molecules having the necessary kinetic energy to escape the surface of the liquid.
Explanation:90
Answer:
Evaporation is the results when a liquid is heated. The kinetic energy of the liquid increases.
Explanation:
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Primary sensory areas of the brain have connections to association areas. What are the names, locations, and functions of the association areas for sight, hearing, and touch
Answers
Answer:
There is no short answer.
Explanation:
Association areas are mostly located in the cerebral cortex and they process the information coming from the sensory areas such as hearing, vision etc.
The association area for sight is located in the occipital lobe and it's name is striate cortex. It's main function is to process the signals coming from the eye.
The association area for hearing is located in the temporal lobe and it's main function is to process the information coming from the ears.
The association area for touch or the sensory association area is located in the cerebral cortex and it's main function is to process the signals coming from the sensory stimuli outside the body.
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Double fertilization followed by the formation of endosperm is unique to angiosperms. How does double fertilization in the Gnetophyta, Ephedra and Gnetum, differ from that in angiosperms?
Answers
Double fertilization in Gnetophyta (Ephedra and Gnetum) differs from that in angiosperms in a few ways.
First, double fertilization occurs in just one cell in Gnetophyta, the central cell of the embryo sac, while in angiosperms the two sperm cells are transferred to two different cells. Second, the sperm cells in Gnetophyta differ from those in angiosperms in that the first sperm cell is large, while the second sperm cell is much smaller.
Third, the two sperm cells in Gnetophyta are transferred to the same nucleus, while in angiosperms, the two sperm cells are transferred to separate nuclei. Fourth, in Gnetophyta, the two sperm cells do not fuse together to form a triploid endosperm, unlike in angiosperms where the two sperm cells fuse to form a triploid endosperm. Lastly, in Gnetophyta the polar nuclei do not undergo the same type of fusion as they do in angiosperms, thus forming a diploid endosperm.
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Put the following steps for urine formation in order from first (step 1) to last (step 4).
Filtrate travels down the nephron tubule.
Blood is filtered in the glomerulus and captured in Bowman’s capsule.
Urine is collected in vessels and leaves the kidneys.
Beneficial molecules and water are reabsorbed into the blood.
Answers
Answer:
Filtrate travels down the nephron tubule - Step 2
Blood is filtered in the glomerulus and captured in Bowman’s capsule -Step 1
Urine is collected in vessels and leaves the kidneys - Step 4
Beneficial molecules and water are reabsorbed into the blood - Step 3
Explanation:
Steps of urine formation are given below.
what is urine formation?Urine production is a crucial procedure for the entire body. It effects not only acid-base balance, but also blood osmolarity, plasma composition, and fluid volume, and therefore all cells in our body.Urine is formed in three stages: glomerular filtration, reabsorption, and secretion.Steps of urine formation are:-
Blood is filtered in the glomerulus and captured in Bowman’s capsule.Filtrate travels down the nephron tubuleBeneficial molecules and water are reabsorbed into the blood.Urine is collected in vessels and leaves the kidneys.Hence, the correct order is 2,1,3,4.
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The first life on Earth wasA. prokaryotic.B. eukaryotic.C. prokaryotic and multicellular.D. eukaryotic and multicellular.E. eukaryotic and unicellular.
Answers
The first life on Earth was prokaryotic. There're different theories about the origin of these kinds of cells, among them we can find how it's hypothesized that these basic forms of life came up from other planets in meteorites, what it's known as the panspermia theory of life. On the other, there's said that the primitive conditions after the formation of our planet gave place to cyclic inorganic molecules that replicate themselves in a physicochemical equilibrium, as happens today with the nutrients cycle, for example, and in a primordial soup, these replicated molecules began to conform more complex structures like nucleic acids that lead to the formation of live organisms. Maybe they resulted after those basic molecules were progressively being part of other molecules, and involved other molecules in their basal structures, such as states the endosymbiotic theory. Or maybe the origin of those basic forms of life is the result of these and other theories in conjunction .
When determining blood type compatibility before a transfusion is performed, which of the following details about the recipient is the most important?
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Answer: Option 2- Antibodies present in Recipient plasma.
Answer:
When determining blood type compatibility before a transfusion, the most important detail about the recipient is their blood type. Specifically, the ABO blood group system is the most important factor to consider. The ABO system includes four blood types: A, B, AB, and O, which are determined by the presence or absence of specific antigens on the surface of red blood cells.
For a successful transfusion, it is important to match the donor's blood type with the recipient's blood type. For example, a person with blood type A can only receive blood from a donor with blood type A or O, but not from a donor with blood type B or AB. Similarly, a person with blood type B can only receive blood from a donor with blood type B or O, but not from a donor with blood type A or AB.
In addition to the ABO blood group system, the Rh factor (positive or negative) should also be considered to ensure compatibility between the donor and recipient.
Explanation:
please help me on this science question
Answers
Answer:
what is the question?
Explanation:
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If a cell has 10 chromosomes when it begins mitosis, how many will it have immediately afterword?
Answers
Answer:
Explanation:
Therefore, there will be two daughter cells at the end of mitosis. Each will have 10 chromosomes, if the parent cell has 10. The chromsomes will not have sister chromatids because after mitosis, the duplicated pairs have separated into the two daughter cells. The cells will each be diploid, just as the parent cell was.
Explanation:
If a cell has 10 chromosomes when it begins mitosis, there are 15 will have immediately afterword.
Not sure what the answer is.
Answers
Answer:
A. Long term is the answer of your question
a kind of lipid utilized in synthesis of rubber is: (a) Acylglycerol (b)Waxes (c)Phospholipdis (d)Terpenes
Answers
Answer:
Option b) waxes
Explanation:
because it is kind of liquids utilized in synthesis of rubber
What percentage of Earth’s surface is covered by water?
Group of answer choices
100%
67%
42%
0%
Answers
Answer:
71 %
Explanation:
Answer:
67%
Explanation:
what do viruses do in order to
reproduce themselves
Answers
Answer: Hello There!
Viruses may have arisen from mobile genetic elements that gained the ability to move between cells. They may be descendants of previously free-living organisms that adapted a parasitic replication strategy. Perhaps viruses existed before, and led to the evolution of, cellular life. OR There are all sorts of virus shapes and sizes. However, all virus particles have a protein coat that surrounds and protects a nucleic acid genome. This protein coat is called a capsid, and the instructions for making the protein subunits of the capsid are encoded in the nucleic acid genome of the virus. They keep on changing....
Explanation:
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The diagram snows the parts or a nower.
Stigma.
Style.
Ovary.
Ovule
Anther
Filament
What is the name of the part labeled 2 in the diagram?
A. Stamen
B. Uterus
C. Carpel
D. Petal
2
Answers
The part of the plant that is shown in image 2 is the petal. Option D
What is a flower?We know that a flower is the reproductive part of the plant. This is the part of the plant that contains the anther and the stigma of the plant. As such, looking at the plant, we can see that the part of the plant that can be take part in the process of pollination is the flower of the plant.
Given the image of the plant as we can see it, it is clear that the labelled part of the plant that we can see in the image that has been labelled 2 is the petal.
Hence, the flower could be said to be the reproductive part of the plant.
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Which statement does the author include to show there are concerns about how sports can negatively impact students?
Answers
A youngster who is pressured to perform and who feels a failure with every setback may experience an inappropriate degree of stress from sports. Sports may cause both parents and athletes to act in unreasonable or obnoxious ways. Many players who compete in sports might end up becoming bad role models.
Sports and mental health among students: what effects?Stress, anxiety, sadness, and thoughts are all correlated with decreased levels of participation in sports. misuse and other risky behaviours are less likely when they play team sports. The likelihood of getting wounded increases when there are many of players moving about the field or court. Instead of concentrating on team objectives, team members may become competitive to win individual accolades. Also, coaches are less able to concentrate on individual instruction.
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(Free Response) Phototropism is a phenomenon observed in plants. Phototropism is best described as a plant’s response to light. Auxin is a hormone and signaling molecule found in plants that promotes cell elongation. It is observed that auxin concentrations are lower in the parts of the plant that are closest to light. Auxin concentrations are higher in the parts of a plant that are in the shade.
Answer the following in the space provided.
A. Describe phototropism using what you know about signal transduction. Start with auxin as a signaling molecule.
B. Explain how altering the receptor would affect the signaling pathway.
C. Predict how a plant would respond to exposure to light on all sides of a growing stem.
D. Provide reasoning and justification for your prediction.
Answers
A city in the U.S. Southwest is planning to restore some wetlands in a park running along its downtown river. A question has been raised about mosquitoes. Some think that mosquitoes will promote the bird population and that the natural beauty of the project will outweigh the risks. Others are worried that the mosquitoes might bring of the such diseases as malaria, especially as more people migrate from the south. How should city planners balance these concerns?
Answers
City planners faced with the question of balancing concerns regarding mosquitoes in wetland restoration projects need to consider both the potential benefits and risks involved. On one hand, mosquitoes can serve as a food source for birds and contribute to the biodiversity and ecological balance of the wetland ecosystem.
They play a role in supporting the bird population and enhancing the natural beauty of the park. These aspects can be important factors in promoting environmental sustainability and attracting visitors to the area. On the other hand, there are legitimate concerns about the potential risks associated with mosquitoes, particularly in terms of disease transmission. While malaria is not typically a concern in the United States, other mosquito-borne diseases such as West Nile virus and Zika virus may pose risks to public health. As migration patterns change and more people move from regions where these diseases are prevalent, the potential for transmission could increase.
To strike a balance, city planners should consider implementing measures to mitigate the risks associated with mosquitoes while maximizing the benefits of wetland restoration. This can include implementing mosquito control strategies such as monitoring and targeted insecticide use, creating habitats for natural predators of mosquitoes, and providing education and awareness programs for the public. By adopting a comprehensive approach that addresses both ecological and public health considerations, city planners can create a wetland restoration project that balances the promotion of biodiversity and natural beauty with the protection of public health.
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Which of the statements below most accurately describes the relationship between the sequence of a mature mRNA and the sequence of the genomic region that encodes that mRNA? An mRNA begins at the 5' end of the promoter and ends at the 3' end of the terminator, but some intervening sequence is removed by splicing. An mRNA begins at the 3' end of the promoter and ends at the 5' end of the terminator, but some intervening sequence is removed by splicing. An mRNA includes all of the sequence from the 5' end of the promoter to the 3' end of the terminator. An mRNA includes all of the sequence from the 3' end of the promoter to the 5' end of the terminator. X Submit You have used 1 of 2 submissions
Answers
An mRNA begins at the 5' end of the promoter and ends at the 3' end of the terminator, but some intervening sequence is removed by splicing.
This statement most accurately describes the relationship between the sequence of a mature mRNA and the sequence of the genomic region that encodes that mRNA.However, it is important to know what these terms mean. mRNA is messenger RNA, which carries genetic information from DNA to ribosomes where proteins are synthesized. The 5' and 3' ends of an mRNA molecule refer to specific ends of the sugar-phosphate backbone of the mRNA molecule that are distinct from each other, and they have different functions.
The 5' end of the mRNA molecule is the end that has a 5' cap. The 3' end of the mRNA molecule has a poly(A) tail attached to it. In addition, promoters and terminators are specific DNA sequences that are important in transcription. In transcription, promoters are the regions of DNA that recruit RNA polymerase to the start of the gene to be transcribed. Terminators are the regions of DNA that signal to RNA polymerase to stop transcription. Intervening sequences are segments of DNA that are transcribed, but are then removed from the pre-mRNA transcript by splicing.
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the molecule of heredity, common to all life forms, that is passed from parents to offspring is:
Answers
Deoxyribonucleic Acid (DNA) is the molecule of heredity, common to all life forms. It is composed of four chemical bases (adenine, guanine, cytosine and thymine) that are arranged in different sequences to form the chemical code of life.
DNA is passed from parents to offspring in the form of chromosomes, which are composed of two strands of DNA coiled together. During reproduction, each parent passes half of their chromosomes to their offspring, creating a unique genetic code for the individual.
DNA contains instructions that determine an organism's characteristics and traits, such as hair and eye color, and other functions at the cellular level. DNA has a complex structure that is yet to be fully understood, but its importance in the transmission of hereditary information cannot be understated.
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When storm clouds produce lightning and thunder,
electric potential
energy changes to
energy and
energy.
Answers
what is the network of nervous that branch out the spinal cord?
Answers
Answer:
meanscommunication between the brain and peripheral nerves.
Explanation:
Central Nervous System (CNS)
The Central Nervous System is composed of the brain and spinal cord. The brain has 12 cranial nerves. The spinal cord, which originates immediately below the brain stem, extends to the first lumbar vertebra (L1). Beyond L1 the spinal cord becomes the cauda equina (see below). The spinal cord provides a means of communication between the brain and peripheral nerves.