Answers
ACh binding opens ion channels in the receptors that allow simultaneous passage of Na+ into the muscle fiber and K+ out of the muscle fiber. More Na+ ions enter than K+ ions exit, which produces a local change in membrane potential called the end plate potential
Related Questions
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, how many guanines are in this DNA molecule?
Answers
Answer:
I'm pretty sure there would be 1000 guanines in the DNA molecule.
Explanation:
Hope this helps. . . <3
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
What will be the total number of thymines if a DNA molecule has a total of 1500nucleotides?The DNA molecules would be given and it have 450 thymines if the DNA molecule has the total of 1500 nucleotides and the DNA molecule also have been known as the deoxyribonucleic acid has been made up of the double helix. The DNA molecule with the total of 1500 nucleotides would contain 750 cytosine and Thymines and 750 guanines and adenine.
Hence, we can have the expression:
C + T = 750
If there are 300 cytosines, hence;
300 + T = 750
T = 750 - 300
T = 450
A nucleotide has the monomer constituting DNA or RNA biopolymer molecules and the double-stranded DNA molecule posseses two strands of DNA made up of the nucleotides.
Therefore, If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
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write the names of the main taxa,putting them in order from most specific to least specific
Answers
Answer:
Kingdom, Phylum, Class, Order, Family, Genus and Species.
Which refers to the light-sensitive surface at the back of the eye?
1.lens
2.iris
3.retina
4.optic nerve
Answers
Where does hunger originate? A., B., C., or D.
Answers
Answer:
The answer is (C) In the hypothalamus
Explanation:
Within the hypothalamus are nerve cells that, when activated, produce the sensation of hunger.
What chemical in the chloroplast captures sunlight for photosynthesis to take place?
Answers
Answer:
pigment chlorophyll
Explanation:
Mark me the brainliest please
Shawn sells ice cream at his mom's yard sale, but he notices that the ice cream melts too fast. Which is the best way to slow the melting? Place the ice cream in the sun. Place the ice cream in a cooler. Place the ice cream near a fan. Place the ice cream under a tent.
Answers
How a psychologist would explain purely practical
Answers
Which two generalizations can be made based on what you know about cycles of matter in a closed system?
A. New matter is added, and old matter is destroyed.
B. Matter changes its physical form, allowing it to return to its original state.
C. The amount of matter within the system remains the same.
D. Matter and energy can cross the boundaries of the system.
E. The cycle has a well-defined starting and stonninn noint
Answers
Answer:
C. The amount of matter within the system remains the same.
E. The cycle has a well-defined starting and stonninn point
Explanation:
Biology anatomy of a muscle
Answers
You can find your answer in this pic
What about the mitochondria and
chloroplast is unlike any other
organelle?
Answers
Answer:
, mitochondria appear to originate only from other mitochondria. They contain their own DNA, which is circular as is true with bacteria, along with their own transcriptional and translational machinery.
Explanation:
The fact that mitochondria and chloroplasts have their own DNA and can replicate independently is what sets them apart from other organisms.
In human cells, mitochondria are in charge of cellular respiration, while chloroplasts are in charge of photosynthesis in plant cells. The endosymbiotic theory, which argues that these organelles are derived from ancient prokaryotic creatures that had a symbiotic relationship with early eukaryotic cells, is supported by the fact that they share a circular DNA structure with bacteria. Chloroplasts and mitochondria are distinctive and important to the energy dynamics and metabolism of eukaryotic cells because they maintain some autonomy, unlike other organelles that depend on the cell's nucleus for their operation.
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Recombination (crossing over) during prophase I of meiosis occurs when:
Answers
Answer:
meiosis before tetrads are aligned along the equator in metaphase I.
Explanation:
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I
A certain gas has a volume of 500.0 ml. at 77.0 C and 600.0 torr
Answers
Answer:
jehdhrue7373
Explanation:
n d1kb nwdcibczqkwvdbjwd
Steppes are areas of tall grasses and scattered shrubs and trees.
True
False
Answers
Answer:
False
Explanation:
The best place to find an oligodendrocyte.
A. White matter of CNS
B. White matter of PNS
C. Gray matter of CNS
D. Gray matter of PNS
E. A ganglion
Answers
Answer:
C. Gray matter of CNS
Explanation:
What is sexual reproduction?
Answers
Answer:
the production of new living organisms by combining genetic information from two individuals of different types
The relationship between predator and prey species is modeled here with the owls and rodents. Which statement(s) correctly evaluate
the relationship between these species with regards to evolution? Select ALL that apply.
es )
A)
The presence of the owls is a selective pressure for the rodents.
B)
Fewer rodents result in an overpopulation of owls, leading to their
evolution
o
Coevolution is occurring as each population is evolving in response to the
other.
D)
Owls that see camouflaged rodents are more likely to evolve to have
increased variation
E)
Coloration results in poorly or well-adapted rodents while eyesight level
can lead to poor or well-adapted owls.
Answers
Answer:A, C, E .
Explanation:
I just did it on USA testprep
A) The presence of the owls is a selective pressure for the rodents.
C) Coevolution is occurring as each population is evolving in response to the other.
What is predator?A predator is an organism that hunts, kills, and feeds on another organism known as the prey. Predation is a biological interaction between two species, where one species benefits by consuming the other species, and the other species is harmed or killed.
These two statements correctly evaluate the relationship between the predator and prey species in terms of evolution. The presence of owls as predators creates a selective pressure for rodents, where those with traits that allow them to escape predation are more likely to survive and pass on their genes.
This leads to the evolution of better-adapted traits in the rodent population over time. The interaction between owls and rodents can also be considered an example of coevolution, as changes in one population can drive changes in the other population, leading to a reciprocal evolutionary response.
Overall, the relationship between predator and prey species is complex and constantly evolving, with each population influencing the other's evolution over time.
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Which of the following best describes The change in the percent of penicillin-resistant S. Aureus bacteria since 1940
Answers
According to the information provided in the graph it can be inferred that the percent of resistant S. aureus doubled from 1950 to 1960.
The graph shows the evolution of the resistance of the Streptococcus aureus bacteria to penicillin from 1940 to 2010. The percentage of resistance evolved as follows:
1940 - 0% 1950 - 40% 1960 - 80% 1970 - 83% 1980 - 88% 1990 - 90% 2000 - 97% 2010 - 100%
According to this information, it can be inferred that the correct answer is option B because the percentage of resistance of S. aureus doubled from 1950 (40%) to 1960 (80%). Additionally, the other options are not because:
A. Between 1980 and 2010, resistance growth was lower than in previous years. C. Resistance peaked in 2010 (100%). D. Loading capacity was reached in 2010.
Note: This question is incomplete because the graph, options and some information is missing. Here is the missing information:
Pneumonia is a lung infection that can be caused by a species of bacteria, Streptococcus aureus. The antibiotic penicillin has been used historically to treat bacterial pneumonia. In recent years, doctors have observed that penicillin is less effective as treatment for pneumonia.
Doctors collected data about the percent of S. aureus bacteria that were resistant to penicillin. The graph shows the percent of penicillin-resistant S. aureus from 1940 to 2010 in one hospital.
A. The percent of resistant S. aureus grew exponentially from 1980 to 2010.
B. The percent of resistant S. aureus doubled from 1950 to 1960.
C. The percent of resistant S. aureus reached its peak in 1960.
D. The S. aureus population reached its carrying capacity by 1990.
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Which of the following is not
one of the kingdoms of living
things?
a Fungi
b. Bacteria
c. Animalia
d. Protista
Answers
Answer:
B. Bacteria
Explanation:
Because bacteria are unicellular organisms belonging to the prokaryotic group where the organisms lack a few organelles and a true nucleus
Bacteria is not one of the kingdoms of living things. So, the correct option is (B).
What are the Different kingdoms of Living things?Living things are divided into 5 kingdoms. These are:
1. Monera
It is the kingdom of microscopic living things that groups together prokaryotes (archaea and bacteria) present in all habitats and composed of single-celled things without a defined nucleus. Bacteria belongs to this kingdom.
2. Protista
This group is primitive of eukaryotic which is paraphyletic which includes common ancestor but not all its descendants. Protozoa belongs to this kingdom.
3. Fungi
This kingdom includes yeasts, molds and all species of mushrooms and toadstools, which are multicellular aerobic heterotrophic eukaryotes, have chitin in their cell walls, feed on other living things, and reproduce by means of spores.
4. Plantae
Trees, plants belong to the kingdom Plantae, which is characterized by its sedentary, multicellular and eukaryotic nature. They are autotrophs, whose cells contain cellulose and chlorophyll which are essential for life on Earth as they release oxygen through photosynthesis.
5. Animalia
The kingdom Animalia is divided into two major groups – vertebrates and invertebrates which are multi-celled, heterotrophic eukaryotes that have aerobic respiration, sexual reproduction and the ability to move. This kingdom includes mammals, fish, birds, reptiles, amphibians, insects, molluscs and annelids.
Thus, Bacteria is not one of the kingdoms of living things. So, the correct option is (B).
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Do you have 5th grade
science for kids in Texas
Answers
Answer:
Yes, indeed they do.
Explanation:
I called my cousin in texas just to make sure this answer is correct. No problem.
Which statement about cellular respiration is true?
It produces oxygen.
It requires water.
It is used by every living cell.
it converts energy to food.
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Which list shows the three things that every good paragraph needs?
questions, answers, examples
topic sentence, supporting sentences, examples
themes, examples, transition words
topic sentence, supporting sentences, clincher plzz help me its langue arts
Answers
Answer:
topic sentence, supporting sentences, examples
Explanation:
hope it helps
Why don’t pregnant women menstruate?
Answers
Answer:
pregnant women don't menstruate bc the blood is going to the child now
Explanation:
Which organelle in a plant cell is most affected when a plant has not received any water? Explain your reasoning.
Answers
Explanation:
that's why hope it helps you
Describe a method you could use to show that the nut contains fat?
Answers
Answer:
answer below
Explanation:
Test if a food item contains fat.
Take a small quantity of the food item to be tested.Wrap the food item in a piece of paper and crush it.Straighten the paper.Dry the paper by keeping it in sunlight for a while.Observe the paper.An oily patch on the paper indicates the presence of fats in the tested food item.Answer:
Take a groundnut and A4 sheet of paper and keep groundnut in the paper and crust open the paper and see the oily patch will be there which shows presence of fat in groundnut.
GIVING BRAINLY! A 20 pound barbell is brought from earth to the International Space Station(ISS). How does this trip affect the
gravitational force between the two ends of the barbell? Assume the distance between the barbell end masses does not change.
A) The gravitational force between the ends remains the same.
B) The gravitational force between the ends increases.
The gravitational force between the ends decreases.
D) The gravitational force between them doubles.
E) The gravitational force
between them decreases by one half.
Answers
Answer:
...
Explanation:..
Answer: B
Explanation: The International Space Station ISS (assume that the weight of the ISS, if it were on the surface of the earth, is approximately 990,000 pounds) orbits the earth at an altitude of approximately 250 miles above the surface of the earth. Assuming a circular orbit, what is the attractive force that the earth exerts to keep it in orbit? An object's mass does not change from place to place, but an object's weight does change because the gravitational acceleration ge depends on the square of the distance from the center of the Earth. Let's do a calculation and determine the weight of the Space Shuttle in low Earth orbit. On the ground, the orbiter weighs about 250,000 pounds.
Based on your experimental results, categorize each microbe as preferring isotonic environments, being halotolerant, or as a halophile.
Answers
The microbes present in the experiment were:
S. cerevisiae
S. epidermis
A way of categorizing microbes is according to the environment that they need to live in. In other words, we can classify them as isotonic, halotolerant and halophile.
If we put these two microbes in solutions of increasing concentrations, 1%, 7% and 15%, we will see that:
S. cerevisiae only grows when it is in a 1% solution.S. epidermis only grows when it is in a 1% and 7% solution.
In conclusion, S.cerevisiae prefers an isotonic environment. S. epidermis is halotolerant since it can grow in a more hypertonic environment. As none of them grows in a highly hypertonic solution, neither of them are halophile.
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4) If City A has 200,000 people in 2 square miles And City B has 350,000 people in 3 square miles, which city is most densely populated ?
Answers
Answer:
city b
Explanation:
because 200000/2=100000 so 100000x3=300000 but city b is 350000
so its city b
INSTRUCTIONS: 1. Prepare the materials needed 2. Think of a slogan managing fatigue levels. 3. The slogan may be express using local dialect (Filipino). 5. Submit your output when you return your envelope. EVALUATION: Your work will be evaluated by your teacher using the following criteria: 1. Relevance 60% 2. Rhyme 20% 3. Presentation 10% 4. Neatness 10 %
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Answer:
ikaw po ang gagawa nyan salamat
2. Summarize the properties of the three types of triglycerides by completing the table.
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The properties of the three types of triglycerides by completing the table are:
They are Non-polarThey are HydrophobicThey are Insoluble in waterTriglycerides
Triglycerides are the main constituents of body fat in humans, vertebrates and vegetable fats.
triglyceride is an ester derived from glycerol and three fatty acids.
Summary of their propertiesThey are:
Non-polarHydrophobicInsoluble in waterSoluble in organic solventsTheir specific gravity is less than water.Read more about triglycerides:
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Memory is___; therefore, ___.
1) an exact replica of an event; we should be confident about the accuracy of people's memories
2) like a video cassette recorder; we should wonder about the accuracy of people's memories
3) reproductive; we should wonder about the accuracy of people's memories
4) reconstructive; we should wonder about the accuracy of people's memories
5) reconstructive; we should be confident about the accuracy of people's memories
Answers
Memory is reconstructive and we should therefore wonder about the accuracy of people's memories.
Recalling an event via memory has the tendency to be influenced by other cognitive processes, including perception, beliefs, ideologies, imaginations, etc. This phenomenon, known as reconstructive memory, is one of the key theories of memory recall.
This is one of the reasons 2 people who witnessed an event will have different reports for the same event. Thus, the reconstructive memory theory leaves no other option but to wonder about the accuracy of people's memories.
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