The primary reservoir for calcium that is released during excitation-contraction coupling in a skeletal muscle fiber is sarcoplasmic reticulum.
What is the function of sarcoplasmic reticulum?The sarcoplasmic reticulum is responsible for storeing calcium ions which it releases when a muscle cell is stimulated.
So we can conclude that the primary reservoir for calcium that is released during excitation-contraction coupling in a skeletal muscle fiber is sarcoplasmic reticulum.
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Which is NOT part of the
protection created for National
Parks?
A. illegal to release pollutants within the
range of the park
B. protects the habitats within the park
C. removes the endangered species within it
to repopulate them
D. endangered species are illegal to hunt
The one that is not a part of the protection created for the National Parks is to protect the habitats within the park. The correct option is B.
What are national parks?A national park is a piece of land that was set aside by a country's government for the purpose of conservation. The natural environment is safeguarded by national parks against a variety of dangers, such as logging and land clearing, invasive species, mining, pollution, and urban expansion.
They preserve vital biodiversity, preserve wildlife corridors, and offer refuge to native species that are in danger of extinction. For 421 species of animals and plants that are either threatened or endangered, the NPS protects their environment.
Therefore, the correct option is B. protect the habitats within the park.
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Which of the following is not true concerning the energy harnessed by humans throughout history? a. early hominids harnessed the least energy, just that of their own bodies. b. fire let humans increase their energy use tenfold. c. neolithic farmers were able to harness the energy of animals. d. modern humans use more than a hundred times the energy of early humans.
Answer:
B. Fire let humans increase their energy use tenfold
Explanation:
Trust :)))
Answer:
B. Fire let humans increase their energy use tenfold
__________ is a condition often caused by harmful agricultural practivices, deforestation, or drought that results in infertile land.
A)
Heat island
B)
Famine
C)
Salinization
D)
Urban sprawl
E)
Desertification
Answer:
E) Desertification
Explanation:
Which invention from the 17th century allowed for the development of modern cell theory
Answer:
The light microscope.
Explanation:
The light microscope allowed scientists to view actual cells for the first time.Specifically Robert Hooke
Which statement best describes the relative conductivity of semiconductors? they are the most conductive elements. they are the least conductive elements. they are more conductive than metals but less conductive than nonmetals. they are more conductive than nonmetals but less conductive than metals.
Answer:
they are more conductive than nonmetals but less conductive than metals
Explanation:
semiconductors are in between when it comes to conductivity, so more than nonmetals but less than metals
What part of the plant develops into the fruit?
F. The stem
G. The leaves
H. The flower
J. The root
Answer:
the flower
Explanation:
i dont know why its just the flower
Which of the following is not a reason that nonnative species are reared outside their native ecosystems? a. they are commercially important. b. they are used to replace native species. c. they are used for restocking programs. d. none of the above please select the best answer from the choices provided a b c d
Since invasive species are in a new environment, free from natural predators, parasites, or competitors, they often develop large population sizes very rapidly. These high populations can out-compete, displace or kill native species or can reduce wildlife food and habitat.
It would be D. Have a nice day!
Can someone please help me? :(
Answer:
is .b.
Explanation:
i really hopes this helps
Answer:
B. Nuclear energy
Explanation:
hope it HELPS
Animals that are born in water, then transform and live on land as adults, are cold-blooded, and have thin breathable ski are grouped in the class
Answer:
i belive it's amphibians? I think
How are the right and left cerebral hemispheres specialized for different functions?.
Answer: There is evidence of specialization of function—referred to as lateralization—in each hemisphere, mainly regarding differences in language functions. The left hemisphere controls the right half of the body, and the right hemisphere controls the left half of the body.
Question 4 of 15
The pitch of a sound wave is its____
-frequency-
______________
what is natural selection not based on
Answer:
Natural selection is the process by which some organisms in a population survive and reproduce, while others do not, based on their bodies and behaviour. It is one of the processes by which species change from generation to generation, and is a crucial element of the theory of evolution.
Explanation:
HELPPPPPPPP PLEASEEEE
I HAVE BEEN AKSING FOR HELP PLEASE SOMEONE
Haldane, a Soviet scientist, proposed in 1929 that a combination of carbon dioxide, water, and ammonia, when exposed to ultraviolet light, can form a variety of organic molecules. The conditions modeled by Haldane's experiment simulated the oceans of early Earth. Which hypothesis of the origin of life on primitive Earth is described by Haldane's experiment? A) panspermia hypothesis B) abiogenesis hypothesis C) primordial soup hypothesis D) hydrothermal vent hypothesis
Answer: In an experiment by Stanley Miller, the chemicals methane, hydrogen, ammonia, and watervapor were subjected to a high-energy.
D). Is your correct answer
Explanation:
17. Eukaryotic cells sometimes cannot get oxygen to their cells and will therefore switch to which process?
What type of muscle is the heart made of?
The heart is largely made up of a type of muscle tissue called Cardiac muscle. The muscle layer of the heart is called the myocardium.
Answer:
The heart is made up of cardiac muscles.
Explanation:
Cats and other nocturnal predators have a greater number of rod cells in their eyes compared to cone cells. What would you predict about the color vision of cats
It is possible to predict that because of the decreased number of cone cells, cats have poor color vision.
What are cone cells?Cone cells are specialized cells in the eye required to produce the spectra of color observed in nature.
Cone cells can be considered photoreceptors located in the retina of the eye (in animals and humans).
Cone cells act in the best way in bright light conditions, conversely to rod cells that serve to observe at the night.
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7. Being assertive means being
O A. confident.
O B. physically strong.
O C. unintelligent.
O D. hesitant.
Answer:
It's confident
Explanation: I hope this helped!
Being assertive means being confident. Option A is the correct answer. Assertiveness is the ability to express oneself confidently and to stand up for one's rights and beliefs without infringing on the rights of others.
What is assertiveness?Assertiveness is an important skill in many areas of life, including personal relationships, the workplace, and social situations. Being assertive can help individuals express their needs and desires, set boundaries, and negotiate effectively. It can also help to build self-esteem and confidence and improve communication with others. Assertive behavior is often characterized by clear communication, confident body language, and a willingness to express one's thoughts and feelings.
Hence, being assertive means being confident. Option A is the correct answer. Assertiveness is the ability to express oneself confidently and to stand up for one's rights and beliefs without infringing on the rights of others.
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Which of the following is not genetic engineering?
Answer:
GMO
Explanation:
Genetic engineering is the process of replicating a specific set of genes from a strand of DNA. It is the process of using gene cloning and other genetic manipulation tools to achieve isolate specific genes.
Unlike the chordates, the other Deuterostome phyla of Echinoderms and Hemichordates are both comprised of ________. marine species tetrapod species detritivores terrestrial species
Deuterostome phyla of Echinoderm animals and Hemichordate animals are both comprised of marine species.
What are Deuterostomes?Deuterostomes are organisms (i.e., animals) in which the anus appears first than the mouth in the embryos.
Embiologically, the development of Deuterostomes involves the formation of a structure called the blastopore.
Deuterostomes emerged after protostomes, which represents an evolutionary older lineage.
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The left side of the heart receives oxygenated blood from the lungs through the.
Answer:
left atrium
Explanation:
The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium, blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.
Compare the benefits and environmental impacts of pesticide use.
Answer:
Benefits:
pesticides can keep harmful pests–such as rats, mice, ticks and mosquitoes–away from crops while also protecting the plants from weeds and diseases that have the ability to greatly reduce crop yield.
Environmental impacts:
Pesticides may move with runoff as compounds dissolved in the water or attached to soil particles. Runoff from areas treated with pesticides can pollute streams, ponds, lakes, and wells. Pesticide residues in surface water can harm plants and animals and contaminate groundwater.
Pesticide use can provide several benefits in terms of crop protection, increased agricultural productivity, and disease prevention. However, it also poses environmental impacts such as Ecological Disruption, Water Pollution, and Development of Pesticide Resistance.
Benefits of Pesticide Use:
1. Pest Control:
Pesticides are designed to target and control pests, including insects, weeds, and pathogens that can damage crops, reduce yields, and spread diseases. By effectively managing pests, pesticide use can help maintain healthy and productive agricultural systems, leading to increased food production and improved crop quality.2. Increased Crop Yields:
Controlling pests through pesticides can result in higher crop yields by reducing yield losses caused by pests. Protecting crops from pests helps ensure optimal plant growth, minimizes crop damage, and enhances overall agricultural productivity.3. Disease Prevention:
Pesticides can play a crucial role in preventing and managing plant diseases, which can be devastating to agricultural systems. By targeting disease-causing organisms, pesticides help prevent the spread and severity of plant diseases.4. Cost Efficiency:
Effective pest control through pesticide use can be cost-efficient for farmers. By mitigating pest-related damage and losses, farmers can potentially achieve higher profits and economic stability.Environmental Impacts of Pesticide Use:
1. Ecological Disruption:
Pesticides can have unintended impacts on non-target organisms, including beneficial insects, birds, bees, fish, and other wildlife. These unintended effects can disrupt ecosystems, leading to a loss of biodiversity and potential imbalances in natural predator-prey relationships.2. Water Pollution:
Pesticides can enter water bodies through runoff, leaching, or spray drift, leading to water pollution. This can harm aquatic organisms, contaminate drinking water sources, and negatively impact the ecological health of rivers, lakes, and other water ecosystems.3. Soil and Environmental Persistence:
Some pesticides can persist in the environment for extended periods, potentially accumulating in soil, sediments, and organisms. This persistence raises concerns about long-term environmental impacts, including soil degradation.4. Development of Pesticide Resistance:
Repeated and excessive use of pesticides can lead to the development of resistance in target pests, making them less susceptible to the pesticide's effects.Thus, using pesticides may protect crops, boost agricultural production, and prevent illness, among other advantages. But it also has negative effects on the environment, including ecological disruption, water pollution, and the emergence of pesticide resistance.
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Deaths associated with earthquakes in sloping areas results from what other natural disaster?
Answer:
landslides i belive
Explanation:
just a guess ig
14. What do all organisms have in common?
a. They are all genetically identical.
b. They are all prokaryotes.
c. They are all eukaryotes.
d. They all use DNA to pass on traits.
Answer:
a. they are all genetically identical
The arteriole that delivers blood to the glomerulus is the __________.
Answer:
The arteriole that delivers blood to the glomerulus is the Afferent arteriole
if we eat raw leafy vegetables, would we be able to digest them? what about raw meat? give a reason for your answer
Answer:
no,we can not survive only on raw leafy vegetables because it contains cellulose, which is a type of carbohydrate that human are not able to digest due to absence of cellulose-digesting enzymes
If an area has a
biodiversity, it is
therefore
stable and therefore
likely to survive changes.
Tin
high, more, more
low, more, less
low, less, more
high, less, less
е
If an area has a high biodiversity, it is therefore more stable and therefore likely to survive more changes in its ecsystem.
What is biodiversity?Biodiversity is the variation of life on the planet earth. It is also known as measure of variation at the species, and ecosystem level.
If an area has a high biodiversity, it is therefore more stable and therefore likely to survive more changes in its ecsystem.
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Researchers notice that animal populations in a wildlife preserve have been decreasing. Which step should the researchers perform to obtain the most valid data about the decreasing animal population?
Answer:
Check the areas that need excessive maintenance
Explanation:
Answer: Throughout the year count and record animals throughout the preserve, as well as log animal deaths.
Explanation: C
Toxic waste leaking from a barrel buried deep underground would be considered which type of pollution?
point source pollution
non-point source pollution
what type of biomolecules is in bread/grains?
Answer:
Carbohydrates would be the answer.
Explanation:
Bread and grains both have carbohydrates.
Farmers spray pesticides on their plants to protect the plants from being eaten by insects. Some individual insects have a genetic mutation that makes them resistant to the toxins in the pesticides. Which statement best describes how only a few resistant individuals resulted in the pesticide becoming ineffective?.
The statement 'resistant insects are able to survive and create a population that is also resistant' describes why the pesticide becomes ineffective.
What is evolution?Evolution is the change process by which individuals adapt to their particular environmental conditions.
The main process by which evolution occurs is called the natural selection of the fittest organisms.
Natural selection refers to the differential survival and reproduction of the most adapted organisms.
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