Answer:
260/2 is equivalent to (4+61)2
which roles are played by sodium and calcium ions in coordinating the activation of a muscle by motor neurons? select all that apply. which roles are played by sodium and calcium ions in coordinating the activation of a muscle by motor neurons? select all that apply. sodium ions enter the motor endplate of the muscle fiber, causing depolarization of the muscle cell. calcium ions diffuse into the sarcoplasmic reticulum to open actin binding sites for myosin, leading to force generation. calcium ions are actively pumped into the sarcoplasmic reticulum to cause muscle relaxation by allowing tropomyosin to block actin binding sites. calcium ions are released from the sarcoplasmic reticulum and bind with tropomyosin to open actin binding sites for myosin, leading to force generation. calcium ions exit the motor neuron axon terminus to stimulate vesicle fusion and neurotransmitter release into the neuromuscular synapse.
The roles played by sodium and calcium ions in coordinating the activation of a muscle by motor neurons are:
Sodium ions enter the motor endplate of the muscle fiber, causing depolarization of the muscle cell. This depolarization, also known as an action potential, is essential for initiating muscle contraction. The influx of sodium ions triggers the propagation of the action potential along the muscle fiber. Calcium ions are released from the sarcoplasmic reticulum and bind with tropomyosin to open actin binding sites for myosin, leading to force generation. When the muscle is stimulated, calcium ions are released from the sarcoplasmic reticulum into the muscle cell. The calcium ions bind to the protein complex called troponin, which causes a conformational change in tropomyosin, exposing the actin binding sites for myosin. This allows the myosin heads to bind to actin and initiate muscle contraction.
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Which of the following is NOT evidence of evolution?
Question 2 options:
Fossils
Carbon Flow Dynamics
DNA Sequences
Biogeography
Answer: Carbon flow dynamics
Explanation:
Give ways of conserving and protecting the soil for future generations.
ways of conserving and protecting the soil for future generation are as follows :
1,less use of insecticides and pesticides for growing crops .
2, we should not harm soil by using different Chemicals such as urea ,DAP.
3, we should use organic manure to conserve soil .
What is the purpose of using a Punnett square in studying genetics?
A. to determine the probability of an offspring to breed with another of the same phenotype
B. to determine the exact number of offspring having a particular genotype
C. to determine the probability of an offspring having a particular phenotype
D.to determine the probability of an offspring having a particular genotype
The purpose of using a Punnett square in studying genetics is to determine the probability of an offspring having a particular genotype. Thus, the correct option for this question is D.
What is Punnett square?Punnett square may be defined as a type of table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are determined. It is named after Reginald C. Punnett, who proposed this approach in 1905.
In genetics, Punnett square is extremely utilized in order to predict the possible outcomes of two unknown genotypes. With the help of these genotypes, phenotypes of a specific set of alleles are also determined. The important concept of Punnett square is that it always determines the probability, not the exact number.
Therefore, to determine the probability of an offspring having a particular genotype is the purpose of using a Punnett square in studying genetics. Thus, the correct option for this question is D.
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will give brainlist to best asnwer.
what are some Habituation Insight Learning differences??
Cognitive form of learning involving mental rearrangement or restructuring of elements in a problem to achieve a sudden understanding of the problem and arrive at a solution is called insightful learning.
What is meant by the habituation?Examples of habituation learning is that :You may become habituated to loud sounds, bright lights, strong odors or physical touch. Learning to ignore and filter out stimuli that are irrelevant, unimportant may allow you to devote more of your attention and cognitive resources to other things, and including things that may signal danger.
There are two types of habituation that are :short-term and long-term.
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A gardener saves seeds from a good producing red tomato plant in her garden. She plants the seeds the following summer and is surprised when the plant produces orange tomatoes. Then she remembers the red tomato plant was next to a plant that produced yellow tomatoes. This an example of a GMO. True or False
False. This situation is not an example of a GMO (Genetically Modified Organism). Instead, it illustrates the natural process of cross-pollination, which can occur when plants are grown in close proximity. In this case, the gardener's red tomato plant was likely cross-pollinated with the yellow tomato plant, resulting in seeds that produced orange tomatoes.
GMOs, on the other hand, are organisms whose genetic material has been deliberately altered through genetic engineering techniques. These changes are often made to improve crop yield, resistance to pests, or nutritional content. The scenario described does not involve any intentional genetic modification, but rather a natural genetic exchange that can occur between closely related plants.
In summary, the appearance of orange tomatoes from the saved seeds is not the result of genetic modification, but a consequence of natural cross-pollination between the red and yellow tomato plants.
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Which product of photosynthesis is released into the atmosphere?
Answer:
Oxygen! Oxygen is the waste product of plants and ends up in the atmosphere, which allows animals to breathe.
suppose that, somehow, all plants died out. what would happen to the oxygen in our atmosphere? group of answer choices the oxygen would increase as plants would not exist to remove it from the atmosphere the oxygen would initially decrease, but as greenhouse gases and temperature increased, it would recover to its normal value the oxygen would eventually be used up in chemical reactions with the surface
If all the plants died out then the affect on oxygen in the atmosphere will be: the oxygen would eventually be used up in chemical reactions.
Plants are the autotrophic organisms that produce their own food by the process of photosynthesis. This process of not only beneficial for the plants to synthesize food but is also important for the environment as it replenishes the amount of oxygen in the environment.
Atmosphere is a layer of gaseous mixture that surrounds an entire planet. This layer of gases remains in its position due to the gravitational force of the planet. The atmosphere of earth of composed of gases like nitrogen, oxygen, argon and a few other gases in negligible amounts.
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www stands for ____ ..
Answer:
www stands for world wide web .
24. Why is everything in our solar system attracted to the sun? *
a. smallest gravitational attraction in the solar system
b. largest gravitational attraction in the solar system
c. it is equal distance to all the planets
O d. it orbits around the planets
Answer:
B. Largest gravitational attraction
Explanation:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
I beleive it's B because it would have to be a strong gravitational pull to keep everything balanced correctly.
Please mark me brainliest if correct :)
1. An investigator who conducts an experiment to determine how temperature changes affect the rate at which the heart beats is most likely a(an)
Answer:
physiologist
Explanation:
A physiologist is a person or a professional who studies and does experiments to see the function and behavior of plants and animals under normal circumstances as well as abnormal circumstances. They also study and learn the impact of the human life on the species and how the specimens they interact with each other.
In the context, an experimenter conducting an experiment to see the affect of heart beat rate when the temperature changes is known as a physiologist.
Mark and Diana are having a disagreement about earthquakes. Mark says they can only do damage to humans when they occur on land. Diana says they can also cause damage when they occur under oceans. Based on the article, who do you agree with and why?
Answer:
Diana is correct.
Explanation:
because earthquakes occur when two plates slip. even if it happens underwater it affects the enviroment around itself usually causing damage.
please give me the brainliest
Answer:
I support Diana.
Explanation:
This is because an earthquake can cause damage whenever it occurs whether under the oceans or on land. Like it can cause harm regardless where it occurred.
alveoli walls are compsed of two types of cells the cells that form the respiratry membrane are ___ cells
Answer:
The cells that form the respiratory membrane in the walls of alveoli are called "pneumocytes" or "alveolar epithelial cells".
The cells that form the respiratory membrane in the alveoli walls are called Type I alveolar cells, or simply Type I cells.
These cells are extremely thin and flat, allowing for efficient gas exchange between the lungs and the bloodstream. Type I cells make up the majority of the alveolar surface area and are responsible for the bulk of gas exchange in the lungs.
They are in direct contact with the capillaries, which allows oxygen to diffuse across the respiratory membrane and into the bloodstream while carbon dioxide diffuses in the opposite direction.
Type II alveolar cells, on the other hand, secrete surfactant, a substance that helps to reduce the surface tension of the alveolar fluid and prevent the collapse of the alveoli during exhalation.
While Type II cells do not directly participate in gas exchange, their function is crucial to maintaining the structural integrity of the alveoli and preventing respiratory distress syndrome in premature infants.
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Which neural/brain areas contribute to proprioception in the human. Provide a design example of proprioception, that could be useful to a mobile robot.
Neural areas include muscle spindles, joint receptors, somatosensory cortex, and the cerebellum contribute to proprioception in humans.
Proprioception in humans involves multiple neural areas. Muscle spindles embedded within muscles detect changes in muscle length, while joint receptors in the joint capsules sense changes in joint position and movement. The somatosensory cortex, located in the parietal lobe, processes sensory information, including proprioceptive inputs, providing a conscious perception of body position.
The cerebellum plays a crucial role in coordinating and refining movements based on proprioceptive feedback. Additionally, the vestibular system in the inner ear, comprising the semicircular canals and otolith organs, contributes to balance and spatial orientation, which are important aspects of proprioception. Together, these neural areas enable humans to have a sense of body position, movement, and spatial awareness.
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Scientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification?
Answer:
They eat plants so since they don't make their own food they are a consumer
Explanation:
clams eat algae and algae is a producer it means that primary consumer
What weather conditions would exist in El Paso based on the weather map seen here?
A)
cold temperatures, sunny skies.
B)
cold temperatures, cloudy skies
warm temperatures, very cloudy, and heavy rain.
D)
warm temperatures, increasing clouds, and showers.
Answer: b
Explanation: i need the points
Answer:
D, warm temperatures, increasing clouds, and showers
Explanation:
I answered D and it was correct.
What adaptation allows organisms to survive in the supralittoral zone of a rocky beach
Answer:
The ability to both attach to solid materials and endure long periods of time without water
When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as
This phenomenon is referred to as muscle summation, which occurs when the muscle is stimulated again before it has fully relaxed from the previous contraction. This leads to a stronger and more sustained contraction due to the increased recruitment of muscle fibers.
It is important to note that this can also lead to muscle fatigue if the muscle is stimulated too frequently without proper rest periods.
Muscle fatigue is the decline in ability of muscles to generate force. It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction.
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1. Menstrual cycles are absent during pregnancy. Justify
OR
2. Can a woman with a blocked fallopian tube give birth to a child? Give reason.
ANSWER ANYONE
what is the relationship between carbon dioxide and oxygen for the otter
Answer:
Research has shown that sea otters are doing their part by indirectly reducing the carbon dioxide (CO2) concentration in the atmosphere. It starts with vast areas of kelp forests that, through photosynthesis, absorb atmospheric CO2 and release oxygen into the air.
Explanation:
I hope this helps!
The relationship between O2 and CO2 in an organism like otter is that Oxygen is taken in for the process of cellular respiration while carbon dioxide is given out as a waste.
CELLULAR RESPIRATION:
Cellular respiration is the process by which living organisms obtain energy in form of ATP by breaking down food molecules in their cells. In the process of cellular respiration, oxygen is taken in by the organism to break down glucose molecule and carbon dioxide is released in the process. The general equation for cellular respiration is as follows:C6H12O6 + 6O2 → 6CO2 + 6H2O Therefore, the relationship between O2 and CO2 in an organism like otter is that Oxygen is taken in for the process of cellular respiration while carbon dioxide is given out as a waste.Learn more at: https://brainly.com/question/13721588?referrer=searchResults
explain why a professional sports man often has a diet which contain plenty of protiens on most days
Answer:
youre my honey buch sugar pump pumpky umky yumkin you're my squisze pie
Which of the following components of an ecosystem are not abiotic factors?
A. fallen leaves
B. wind
C. small rocks
D. sunlight
Abiotic components are the non-living, chemical, and physical elements of an ecosystem that have an impact on living things and how ecosystems function, hence option A. fallen leaves is the correct option.
What are abiotic factors in the ecosystem?Temperature, light, water, and other abiotic elements of the ecosystem are examples.
The nonliving components of the environment, or abiotic influences, frequently have a significant impact on living things. Water, sunlight, oxygen, soil, and temperature are examples of abiotic variables.
Abiotic factors are non-living components of an ecosystem that influence their surroundings. Examples could be light, water, and temperature in a terrestrial habitat.
Therefore, abiotic elements in a marine ecosystem would be salinity and ocean currents. A particular ecosystem is produced by the interaction of biotic and abiotic elements.
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How could you identify if a substance is an element ?
Answer: A substance that cannot be broken down into chemically simpler components is an element.
Explanation: Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound.
What do aerobic respiration and anaerobic respiration have in common?
Which statement about cellular respiration is true?
Cellular respiration can take both aerobic and anaerobic forms. It is obvious that both rely on glycolysis to create ATP. Both create byproducts, use localized chemical processes in the cytoplasm to produce energy by metabolizing glucose.
Which of the following true for cellular respiration?Despite the initial high energy consumption, both proteins and fats may provide energy. Glucose is the preferred chemical that cells will employ to produce energy.
Which of the following statements concerning anaerobic and aerobic respiration is true?Comparability between the two types of respiration: The similarities between aerobic and anaerobic respiration is that energy is generated in both processes through the oxidation of food like glucose.
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Question:
What do aerobic respiration and anaerobic respiration have in common?"
"Which statement about cellular respiration is true?"
A one-year simulation is run with the settings shown below. The resulting yield was 6.6 tons per hectare, or 44% of the maximum yield. What is the most likely cause for the poor yield?
Answer: The corn plants were damaged by the herbicide.
Explanation
Depending upon the plant affected and the herbicide used, effects of herbicide damage differ. Popular signs include flattened stems or twisting or corkscrewing. Leaves can have shapes, sizes or textures that are irregular. Moreover, yellow or reddened leaves or leaf veins may. This usually leads to loss in crops as noticed from the maize plantation where more than half was lost.
The most plausible explanation of the low yield would be herbicide harm to the maize plants.
Herbicide
Herbicide damage has different consequences it depends on the plant as well as the herbicide employed. Ground down stems, twirling as well as rotating clockwise are popular symptoms.
Leaves could have varied forms, dimensions, and properties. Furthermore, yellow or reddish leaves especially leaf veins are possible. This frequently results in crop losses, as seen in the maize plantations, where more than half of the harvest was destroyed.
Thus the response above is correct.
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8. What is an ecosystem?
A type of bacteria reproduces through binary fission every hour. What happens to the number of bacteria each hour?A type of bacteria reproduces through binary fission every hour. What happens to the number of bacteria each hour?
Since binary fission is the direct division of bacteria from which two cells result that means every hour the number of bacteria will double.
Answer:
the number of bacteria will double and 32
Explanation:
because in 1 hour its 2 and in 2 hours its 4 so it doubled or you can check in 3 hours it was 8 and in 4 hours it was 16 so it doubled. And when you double 16 do find the amount in 5 hours it is 32.
Interphase
21. Before Meiosis, comes
cell activities, like making
During interphase, the ce
for example.
22. Uncoiled stringy DNA is called
A population of 40 killer whales lives in a bay that measures 2000 square miles. What is the population density of killer whales?
Answer:
.02
Explanation:
When finding population density, divide the amount of people, animals or things in the region by the total square miles. 40/2000 is .02.
A population is the size of the group of individuals residing at a place. A population of 40 killer whales has a population density of 0.02.
What is population density?Population density is the individual's concentration of a specific species at a particular geographical location. It allows the establishment of the ecosystem and health.
Given,
Number of individulas = 40
Size of the area = 2000
Density = Number of individuals ÷ Size of the area
= 40 ÷ 2000
= 0.02
Therefore, 0.02 is the population density of killer whales.
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Why might a speaker choose NOT to use contractions in a formal speech?
A. Contractions are too short.
B. Contractions are rude.
C. Contractions are informal.
D. Contractions are improper.
Answer:
The answer is C
Explanation:
I just took the quiz :)
A speaker might choose not to use contractions in a formal speech because contractions are informal. Thus, the correct option is C.
What is a Formal speech?A formal speech may be defined as a form of speech that is utilized in authorized and official workplaces. It does not illustrate personal background.
Contraction involves the feelings of pressure, stress, or shrinkage of actions. Thus, all such properties come under an informal type of speech where the personal background is determined.
Therefore, a speaker might choose not to use contractions in a formal speech because contractions are informal. Thus, the correct option is C.
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