The interaction between which protein and ion initiates contraction of skeletal muscle?

Answers

Answer 1
Calcium ions attach to calmodulin which then activate protein kinase. This occurs in the neuromuscular junction, specifically in the synaptic cleft, which is the space between the axon bulb and the sarcolemma. The protein kinase allows the fusion of synaptic vesicles. Acetylcholine reaches the muscle fibers and activates Sodium ions which innervate the muscles.

Related Questions

what is not a characteristic of life?

Answers

The seven characteristics of life include: responsiveness to the environment; growth and change; ability to reproduce; have a metabolism and breathe; maintain homeostasis; being made of cells; passing traits onto offspring

Answer:

Immortality is not a characteristic of life.

Explanation:

Firstly the characteristics of life is responsiveness to the environment, growth  and change, reproduction, metabolism, maintain homeostasis, being made of cell, and passing trades on to offspring.

We know that life is limited so immortality or unlimited duration of existence is not a characteristic of life.

Investigate what newborn babies, skunk cabbage, hibernating bears, and a banned diet drug called dnp all have in common with regards to cellular respiration.

Answers

Final answer:

Newborn babies, skunk cabbage, hibernating bears, and DNP all reveal unique interactions with cellular respiration, relating to temperature regulation or metabolic rate variance.

Explanation:

Newborn babies, skunk cabbage, hibernating bears, and a banned diet drug called DNP all showcase unique aspects of cellular respiration. Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Bears during hibernation slow down their metabolism and lower both heart rate and body temperature, thereby conserving energy. Newborn babies, especially preterm ones, might experience a condition known as non-shivering thermogenesis where they produce heat through metabolic processes due to their inability to shiver efficiently. Skunk cabbage can generate heat to help spread its scent and melt surrounding snow, a process known as thermogenesis. Lastly, the drug DNP interferes with the proton gradient in mitochondria, leading to an increase in metabolic rate and production of heat, which is why it was used as a weight loss aid before being banned due to toxicity. All these examples reflect on the diverse roles and behaviors of organisms or substances related to cellular respiration.

Which physical property do plasmas and gases have in common?
A. They both have charged particles
B. They have the same attractive forces between particles
C. They have the same space between particles
D. They create magnetic and electric fields

Answers

The correct option is C. 
Plasma refers to a gas that has been heated to the point of ionization, that is, almost all the electrons in the atoms of the gas have been removed and only proton exist as positively charged particles. 
Plasma has properties that differs from that of gases but the space between the particles of plasma and that of gases are the same.

Answer:

c

Explanation:

i got it right

Northern coniferous forests, characterized by long, cold winters and conifers with short needles, are the largest terrestrial biome. true or false?
a. True
b. False

Answers

i think it is true for show

The correct answer is a. True

Taiga - Cold in the winter and warm in the summer, the taiga is the world's largest land biome.

What is northern coniferous forest?

coniferous forest, vegetation composed primarily of cone-bearing needle-leaved or scale-leaved evergreen trees, found in areas that have long winters and moderate to high annual precipitation. The northern Eurasian coniferous forest is called the taiga or the boreal forest.

Where is the northern coniferous forest located?

The northern coniferous forest, or taiga, extends across North America from the Pacific to the Atlantic, across northern Europe through Scandinavia and Russia, and across Asia through Siberia to Mongolia, northern China, and northern Japan.

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Suppose that in goats, an independently sorting autosomal allele that produces a bearded phenotype is dominant in males and recessive in females. the symbol bb represents the bearded allele and b represents the beardless allele. the autosomal allele for a black coat (w), which also independently assorts, is dominant over the allele for white coat (w). match each set of progeny phenotypes and proportions to the parental cross that produced that set.

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B+ Bb Ww male × B+ Bb Ww female Because beardedness and coat color independently assort, we can treat them independently. The difference between this cross and a dihybrid cross is that the bearded allele B b is dominant in males and recessive in females. So we deal with male and female progeny separately. For each sex, then, we should get a typical dihybrid ratio. In males, the dominant phenotype is bearded, so we should get ¾ bearded, ¼ beardless. In females the dominant phenotype is beardless, so we should get ¾ beardless and ¼ bearded. Each sex will have ¾ black and ¼ white coats.

Bacteria reproduce asexually by A) mitosis. B) meiosis. C) conjugation. D) binary fission.

Answers

It is D) binary fission. 
I would also go with the answer D) binary fission
Hope this helps!

Some bacteria live in deep sea vents where no light penetrates, yet are still capable of producing their own reduced carbon (e.g. fixing carbon dioxide). these organisms are classified as

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Answer:  "chemoautotrophs" .
_________________________________________

Proteins are made of amino acids. what elements make up amino acids? look up the structures of the 20 amino acids in your textbook and list the 5 elements present.

Answers

DNA, RNA, ATP that is wat make it up

The normal, or ________, eye accommodates properly.

Answers

the normal, or emmetropic, eye accommodates properly.
Final answer:

The normal, or typical, eye accommodates properly for close and distant vision.

Explanation:

The normal, or typical, eye accommodates properly. For close vision, the eye is fully accommodated and has its greatest power, whereas for distant vision, it is totally relaxed and has its smallest power. An 8% ability to accommodate is considered normal but is typical for people who are about 40 years old. Younger people have greater accommodation ability, whereas older people gradually lose the ability to accommodate.

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A tree grows and increases its mass. explain why this phenomenon is not a violation

Answers

A tree is not an isolated system. It gets nutrients from surrounding environment to grow and build its mass. A total mass of tree plus its environment is constant. 

An allele is one of the alternative forms of a gene that governs a trait. If a fern plant is heterozygous for a particular trait, how can the alleles that control that trait be described? A. one dominant, one recessive B. two dominant C. three recessive, one dominant D. two recessive

Answers

"Hetero" means different. So the plant has two different alleles; one dominant and one recessive as in (A).

Answer:

The correct answer is A. one dominant, one recessive

Explanation:

A gene can have many alternative forms called alleles. These alleles can be present in homozygous condition or heterozygous condition. In homozygous condition chromosome contains two same forms of an allele of a gene. In heterozygous condition a chromosome contains two different forms of an allele of a gene.  

These alleles can be dominant or recessive. A dominant allele can be expressed in both homozygous and heterozygous condition, but a recessive allele will only express in homozygous condition.

So If a fern plant is heterozygous for a particular trait then it contains one dominant and one recessive allele because in heterozygous condition two different forms of allele is present. Therefore the right answer is A.

Imagine that you are a hungry cell and find a large supply of citrate (citric acid). how many atps can you get from each citrate molecule if you use both the citric acid cycle and the electron transport chain?

Answers

Final answer:

Each citrate molecule can generate 6 ATPs through the citric acid cycle and the electron transport chain.

Explanation:

The citric acid cycle and the electron transport chain work together to produce ATP from citrate molecules. Each citrate molecule can produce one ATP in the citric acid cycle. In addition, the citric acid cycle generates three NADH and one FADH₂ per citrate molecule. These NADH and FADH₂ molecules enter the electron transport chain, where each NADH can produce as many as three ATP, and each FADH₂ can produce as many as two ATP. Therefore, the total number of ATP molecules that can be generated from each citrate molecule using both the citric acid cycle and the electron transport chain is:

1 ATP (from the citric acid cycle) + 3 ATP (from NADH) + 2 ATP (from FADH₂) = 6 ATP per citrate molecule

) when cells are broken open, dna is released from cells into solution. name at least two other macromolecules that are also released from the cells, and the places they are found in the cells.

Answers

Protein, nucleic acid, carbohydrate and lipid that are released from the cell.

Protein and nucleic acid are the two macromolecules that are also released from the cells when the cell is broken up because these two macromolecules are present in the cell and performs different types of functions that helps the cell in growth and development.

There are two more macromolecules are present such as carbohydrates and lipids in the cell that are also very important for cell so we can conclude that when the cell is broken, protein, nucleic acid, carbohydrate and lipid are released from the cell.

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How can we best characterize the physical differences between humans and apes?

Answers

The physical differences between humans and apes are: human have  relatively short and weak arms compared to their legs.  Human's toes become shorter, so human's feet do not have the ability to effectively grasp and manipulate objects.  Human feet are longer than the feet of apes, in order to better support the body. 

Channel proteins that form a narrow passageway in gap junctions are known as which of the following

Answers

Channel proteins which form a narrow passageway in the gap junctions are known as CONNEXONS.
Connexons are usually found at gap junctions, they form passage way which allow small molecules and ions to pas from cell to cell. Gap junctions are typically found in epithelial cells where the movement of ions facilitate coordinated functions. 
Final answer:

Connexons are the channel proteins that form a narrow passageway in gap junctions.

Explanation:

Channel proteins that form a narrow passageway in gap junctions are known as connexons.

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The part of the cell that regulates what can enter or leave is the

Answers

Yes, the cell membrane regulates what enters the cell and leaves the cell. The cell membrane is a fluid mosaic consisting of a phospholipid bilayer and integral and peripheral proteins. The proteins of the membrane serve many purposes: transport, receptors, etc. The cell membrane is amphipathic, meaning is has hydrophilic and hydrophobic regions.

Which part of the blood is most efficient at carrying oxygen? select one:
a. blood plasma solution
b. blood plasma proteins
c. blood platelets
d. membrane molecules of red blood cells
e. hemoglobin molecules of red blood cells next?

Answers

Which part of the blood is most efficient at carrying oxygen ?


Correct Answer: E. hemoglobin molecules of red blood cells 


Good luck and have a nice Benevolentpuppy day!

The first genetic map, using drosophila to measure crossover frequencies, was actually and personally constructed by:

Answers

The first genetic map was constructed by STURTEVANT.
Sturtevant is an American geneticist, he constructed the first genetic map in 1913 using the drosophila chromosomes. 
Genetic map is the graphical representation of the arrangement of genes on a chromosome. Genetic map is used to locate gene or group of genes that determine particular traits.
The first genetic map was constructed by Alfred Sturtevant. In 1913, he was the first constructing a genetic map of chromosome. He worked on the biological model drosophila melanogaster next to Thomas Morgan, another geneticist.

Why do different individuals such as siblings have different restriction enzyme recognition sites?

Answers

The DNA material found in each person is unique, no two individual have the same type of DNA material. Because of the differences in the DNA molecule of individuals, the restriction enzyme recognition sites are also different too. Restriction enzyme recognition sites refer to the different locations on a DNA molecule which contain specific base pair nucleotide that are recognized by restriction enzymes.

Estimate how much the brain would swell due to osmosis if the concentration of the cerebrospinal ±uid fell to 280mm. in other words, ³nd what the new volume

Answers

Since the average osmotic pressure of the brain is 300mM and the concentration of the solution is 280mM, that means there is 20mM difference between the brain cells and CSF. This will induce osmosis and cause water to move from the CSF into the brain until the concentration becomes same. Assuming brain volume is 1200ml and the CSF constantly replaced., then the estimation of fluid should be: 20mM/300mM * 1200ml= 80 ml
If it made percent it should be: 80ml / 1200ml= 6.67%
Final answer:

Estimating how much the brain would swell due to a drop in cerebrospinal fluid concentration to 280 mm involves understanding osmosis and brain-CSF osmotic balance, which is crucial for preventing conditions like hydrocephalus. The exact new volume would need medical evaluation.

Explanation:

The question concerns the phenomenon of brain swelling due to osmosis caused by changes in the concentration of cerebrospinal fluid (CSF). When the concentration of CSF falls, such as to 280 mm, water can flow into the brain cells due to osmotic imbalances, potentially leading to a condition like hydrocephalus. However, estimating the exact new volume of the brain due to osmosis requires sophisticated medical instruments and knowledge of osmotic pressure in the brain's environment. Normally, the pressure in the CSF ranges from 5 to 12 mm Hg, and deviations from this range can affect the brain's volume and pressure dramatically.

For example, if the gauge pressure in the fluid surrounding the brain increases significantly, it can lead to an increase in the outward force on the skull, even causing the skull to grow abnormally large in infants with hydrocephalus. In adults, a reduction in the CSF concentration can cause severe headaches and damage due to the brain resting upon the skull.

The specific volume change due to a CSF concentration drop to 280 mm would vary based on individual circumstances and would require medical assessment to determine.

How does the temperature affect enzyme function? use evidence from your data to support your answer?

Answers

If the temperature is too high, it can alter the structure of the enzyme and make it unable to bind to the substrate. But, if the temperature is too low the chance for the enzyme to collide with the substrate will be lower too. The enzyme works best in the highest temperature before its structure changed.
The data from the experiment should look like a bell. There is an optimal temperature for the enzyme and increasing/decreasing from that temperature will result in reduced reaction speed.
An increase in temperature will increase the reaction rate of enzymes. For instance, a 10 degree celsius rise in temperature will increase the activity of most enzymes by 50% to 100%. But too high temperature negatively affect enzymes and their functioning.

Genetics, botany, and zoology are all branches of what subject ?
A. Chemistry
B.biology
C.physics
D.astronomy

Answers

B. Biology, Biology is the study of life. All of these branches lead to Biology since they deal with living organisms.

Final answer:

Genetics, botany, and zoology are all branches of biology, which is the overarching science concerned with the study of life and living organisms.

Explanation:

Genetics, botany, and zoology are all branches of biology, which is the correct answer to your question. Biology is the scientific study of life and living organisms, encompassing various specialized fields. For instance, genetics is concerned with how traits are inherited, botany focuses on the study of plants, and zoology is the branch that specializes in the study of animals. Other branches of science include fields such as physiology, the study of the functions of living organisms; geophysics, which explores the physical processes and properties of Earth; and agriculture, which involves the cultivation of plants and animals for food, fiber, biofuel, and other products beneficial to life.

Energy conversion within an animal cell would be severely limited by removal of the cell's

Answers

mitochondria is your answer ..

"the term ________ refers to the part of the inner ear that plays a key role in maintaining a sense of balance."

Answers

Labyrinth or the vestibule is the part of the inner ear (vestibulocochlea) that deals with balance (equilibrium).

What evidence would you look for to see if a chemical reaction has occurred?

Answers

a change in the substance by temp, color, 

What happens to any matter that is not used by consumers in a food chain

Answers

Matter that is not used by consumers in the food chain become "detritus". Which is simply just waste. It is left to decompose. 

Answer:

Material not consumed by consumers in the food chain generates the debris chain.

Explanation:

Debris chain, where the basis is non-living organic matter not consumed by consumers, is due to the decomposition of vegetable and animal bodies and their droppings. This matter is processed by decomposing microorganisms (fungi and bacteria), which release it in the form of plant nutrients, or in the form of debris that will be consumed by detritivorous organisms, in turn consumed by carnivores.

What structural feature of cells can allow molecules to flow directly from the inside of one cell to the inside of the next? (a) cilia (b) plasmids (c) plasmodesmata (d) choroplasts PLEASE HELP ME!

Answers

C . Plasmodesmata is correct :)
c is the right answer

A pressure (decubitus) ulcer that has a skin break through all layers of the skin is classified as stage _____.​

Answers

This is classified at being stage III. In stage III, the decubitus ulcer begins to show a breaking in the skin, throughout all layers. This is the most dangerous stage, and needs to be treated almost immediately. This will help to prevent any further damage that could be caused.

Compare and contrast tidal volume (tv), inspiratory reserve volume (irv), expiratory reserve volume (erv), and vital capacity (vc). why and how could an individual's tidal volume decrease and increase?

Answers

Tidal volume was the measure of air that regularly enters the lungs amid calm relaxing. The Expiratory Reserve volume was the measure of air you can powerfully breathe out pas an ordinary tidal termination. Then, the vital capacity was the measure of air a man can move into or lungs and is the entirety of the considerable number of volumes aside from leftover volume. Amid practice is the point at which the tidal volume could increment because of the additional carbon dioxide

True or false: natural monopolies may occur

Answers

the answer would be true
true, because in certain markets such as railways, it is just more efficient if there is only one supplier.
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Which disorder tends to occur primarily in the united states and other western countries? Working to improve the living and housing conditions that resulted from the Industrial Revolution is an example of _____.A.community stagnation B.financial deregulation C.social justice D.All of the above Borace drew a diagram to compare the processes of scientific investigation and technological design. Which belongs in the area labeled W? Conduct an experiment Design a solution Analyze the results Build a prototype Any statements about optimal population are inevitably culturally determined. a. True b. False What is the 6th value in the sequence with the explicit formula an=2n14? A 26 B 12 C 10 D 6 what is the answer to which statement accurately defines the term conquistadors Which of the groups below is often referred to as the "mother culture" of mesoamerican mexico? olmecs aztecs? If my son was born june 2016 what year will he graduate high school Which architectural design was used in both Mayan and ancient Egyptian civilizations? zigguratspyramidsstelaeobelisks A jogger jogs from one end to the other of a straight track in 1.13 min and then back to the starting point in 1.63 min. What is the joggers average speed in jogging to the far end of the track (assuming the track is 100 m long) Read the excerpt from Gilgamesh: A New English Version.The man who pulled you up from the groundand gave you fresh water from his waterskinis Lugalbanda, your personal god.With his help, we will achieve a triumphgreater than any man has achieved.Which feature of epic poetry does this excerpt most clearly show? Slope is 3, and (1,4) is on the line When was the last time the dodgers won the world series? Please help! XD?????????????? Brandon says to get that shade of green, 6 pints of yellow paint need to be added to the bucket. Bianca says that won't work. In two or more complete sentences, explain who is correct and why. In your explanation, include the calculations to support the correct answer. Which ordered pairs in the form (x,y) are solutions to the equation7x5y=28 ?Select each correct answer. (7,9) (1,7) (4,10) (6,14) In June, there are fewer hours of daylight and less direct in the A. Southern Hemisphere B. Northern hemisphere C. Western Hemisphere D. Eastern Hemisphere . A firm produces a commodity and receives $100 for each unit sold. The cost of producing and selling x units is 20x + 0.25x 2 dollars. (a) Find the production level which maximizes profit. (in other words, find the x that maximizes profit) (b) A tax of $10 per unit is imposed on the firm. What is the new optimum production level? Robert studies ocean life. He observes that a species of octopus squirts a large cloud of black ink whenever a predator approaches. Which of the following is a scientific question that Robert could ask about what he observed? A. Does a big octopus have a prettier ink cloud than a small octopus? B. Does releasing a cloud of ink make the octopus more likely to escape a predator? C. Does an octopus release a cloud of ink whenever it feels scared? D. Does a predator like the taste of an octopus more than the taste of a squid? Solve the equation and find the value of the variable Steam Workshop Downloader