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Related Questions
studies of the mechanism of action of the amphetamines have focused mainly on
a. serotonin and the endorphins.
b.GABA and glutamate.
c. nicotinic
d. release of norepinephrine and dopamine.
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studies of the mechanism of action of the amphetamines have focused mainly on release of norepinephrine and dopamine. So, the correct option is D.
The mechanism of action of the amphetamines Norepinephrine and dopamine are the primary neurotransmitters that are released more after taking certain medications. Increasing the levels of norepinephrine and dopamine can result in feelings of euphoria and more energy because both chemicals are involved in controlling mood, attention, and motivation.
As they enter the brain, amphetamines trigger the presynaptic cell to release norepinephrine and dopamine. Norepinephrine and dopamine that are released bind to the postsynaptic neuron's particular receptors, increasing brain activity. Moreover, amphetamines prevent the absorption of norepinephrine and dopamine, which prolongs their duration in the synaptic cleft and increases activation of the postsynaptic neuron.
Ultimately, the way that amphetamines work is intricate and includes the release of a number of different neurotransmitters and hormones into the body and brain. Norepinephrine and dopamine, which are crucial for controlling mood, attention, and motivation, are the main mechanisms of action, though.
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Suppose that a plant disease kills all the fruit. The change could become a on the birds?
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Explain why transcription occurs in the nucleus of eukaryotes.
Bonus: Compare the processes of replication and transcription.
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Answer:
Transcription occurs in eukaryotes in a way similar to prokaryotes. However, initiation is more complex, termination does not involve stem-loop structures and transcription is carried out by three enzymes (RNA polymerases I, II and III) each of which transcribes a specific set of genes and functions in a slightly different way.
Explanation:
Answer:
The transcription is the process by which the DNA molecule makes an RNA molecule using the enzyme RNA polymerase and other proteins.
Step-by-step answer:
The mRNA is then used to generate proteins by a process that is called translation which would occur in the cytoplasm. The transcription occurs in the nucleus because the DNA cannot leave the nucleus. which is the center in which the DNA is stored.
explain the theory of natural selection
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Basically, Evolution.
The theory of natural selection by Charles Darwin provides that reasonable method of evolution. Natural selection essentially states that "the strong survive." The basic idea is that when change occurs, those organisms best suited to the new circumstances will thrive. Those who aren't suited for the conditions will not be able to compete. Charles Darwin and is now believed to be the main process that brings about evolution.
Instructions: Place the best/correct letter on the line provided.
You have been given an unknown organism to identify. You find that it is unicellular and has a cell wall.
Which of the following must it also have?
A. chloroplasts
B. Asexual reproduction
C. pseudopodia
d. one or more flagella
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Answer:
It's c, Pseudopodia
Explanation:
Create a scavenger hunt in your backyard or local park. Get together a team of four other people and break them into two groups. Have them complete the scavenger hunt. How creative were they in completing each part? How did their perceptions differ from each other in order to complete each task in the hunt? 75 points also
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Definition of water resources?
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Please star ⭐️ my answer if you love it.
how could a natural disaster result in genetic drift?
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The fact that some members of a population are more likely than others to live longer and have more offspring, and as a result, pass on more of their genes to the following generation, is the basis for the theory of natural selection.
What is genetic drift?
A large, strong male gorilla is considerably more likely than a smaller, weaker one to become the silverback of the population, the pack's alpha male who mates much more frequently than the other males in the group.
The pack leader will father more children who will inherit half of his DNA and will probably develop into bigger, stronger individuals like their father. The population's frequency of genes for higher size will rise through time, and as a result, the population will generally get bigger.
Small populations are more vulnerable to genetic drift's effects. Large populations, on the other hand, are protected against the impacts of chance.
Therefore, The fact that some members of a population are more likely than others to live longer and have more offspring, and as a result, pass on more of their genes to the following generation, is the basis for the theory of natural selection.
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Select which Statement below summarizes Goals Communism and Fascism based on the following text.
"Communist and fascist governments resemble each other in some ways. In both, a dictator often rules. Both suppress opposition and claim that individual liberties must be sacrificed for the greater good of society. Both tend toward totalitarian control of people's lives. But their economic policies are different, and so are their larger goals.
In a communist society, the government directs the economy and owns most or all of the land, factories, and other resources that contribute to the economy. In theory, workers control the production of goods and share property. The stated goal of communism is a world in which social classes disappear and all people are treated equally. That's the theory - in reality, leaders of communist nations usually have far more material goods and privileges than the workers, who lack both wealth and freedom. A fascist government allows individuals to own property and businesses, but it maintains strict control over economic activity, and makes sure that private businesses serve the government's goals. Fascism glorifies the nation and its leaders, and calls on citizens to put the interests of the nation above individual interests.
Fascist regimes often use war as a way to expand and strengthen the state.
A.They reject the idea of equality for all. On the contrary, fascists often persecute minorities, and claim that their own national group is superior to others and therefore destined to rule."
B.There are no similarities at all between Communist and Fascist nations.
C.Communism has total economic control while Fascism is all about free trade and
capitalism with no economic controls.
D.( Communist governments allowed freedom and elections almost always while
Fascist governments only allow some freedoms like freedom of the press.
Both systems use tight control of peoples freedoms and the economy.
Communism aims to make all workers equal, while Fascist want all power to go to the State/Nation.
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Communism has all of the economic power. They share all good even though it may not end up that way. On the other hand we facism, which is where the people have a little bit less economic restraints but do everything for the good of the nation.
give two similarities between the way the fungus feeds and the way that you feed
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A huge carbon reservoir(place that stores carbon) is:
a. The soil
b.Animal Waste
c.Rocks
d.Oceans
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Answer:
A
Explanation:
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Which is the correct order of the Taxonomic Groups from broadest to more specific?
a). Domain, Kingdom, Phylum, Class, Order, Family, Species, Genus
b). Domain, Kingdom, Phylum, Class, Order, Family Genus, Species
c). Kingdom, Domain, Class, Phylum, Family, Order, Genus, Species
d). Domain, Phylum, kingdom, Class, Family, Order, Genus, Species
e. None of the above
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This is one of the phases of Mitosis.
P 7
Vuv
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What is happening to the chromosomes?
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Answer:
Anaphase
Explanation:
The chromosomes are separates in preparation for cell division. This happens during anaphase.
protein digestion: a. uses peptidase made in the small intestines. b. end products are amino acids. c. uses trypsin made in the pancreas. d. end products are amino acids, uses peptidase made in the small intestines, and uses trypsin made in the pancreas.
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The correct answer is (d) Protein digestion involves the breakdown of proteins into smaller molecules called amino acids. This process occurs in the small intestines and is facilitated by enzymes called peptidases, which are produced in the small intestines, and trypsin, which is produced in the pancreas.
The end products of protein digestion are indeed amino acids. Amino acids are the building blocks of proteins and are essential for various biological processes in the body.
To summarize:
- Protein digestion uses peptidase enzymes produced in the small intestines.
- Protein digestion also uses trypsin, which is produced in the pancreas.
- The end products of protein digestion are amino acids.
These processes are crucial for the body to efficiently utilize proteins for various functions, such as muscle repair and growth, enzyme production, and hormone synthesis.
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Which term refers to a solution with a higher solute concentration outside the cell than inside the cell?
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Answer:
Hypertonic
Hypertonic-the environment outside of the cell has a higher concentration of solutes than the cell itself has.
ASAP!!!!!!!!!!!!! What errors tend to lead to pseudoscience
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Answer:
consists of statements, beliefs, or practices that are claimed to be both scientific and factual but are incompatible with the scientific method.
Explanation:
Pseudoscience are any methods, theories, or systems that have no scientific basis. Some errors includes: - Having contradictory information - Exaggerated and false cliams - Reliance on bias rather than facts
I need help with science
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Answer:
an increase or decrease in temperature
Explanation:
it the only that makes since
Which of the following describes lipids?
a. a source of nutrients for organisms
b. energy-storage molecules
c. molecules having structural role in membranes
d. molecules that are part of hormones and pigments
e. all of the above
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What causes temperature extremes in the dessert??
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Answer: In the dessert the air is dry\lacks moisture.
Explanation:
can you explain in brief about gigatism and dwarfism
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Gigantism is a condition caused by excessive secretion of STH(somato trope hormone) before puberty. Individuals reach heights of about 2 meters.
Dwarfism(hypophyseal dwarfism) is caused by hyposecretion of STH before puberty. Individuals reach heights of about 1,20-1,30m
Cacti are plants that live in extremely dry environments. Unlike most other plants, cacti do not have regular leaves, but instead have spines. They do have green stems. How would the lack of regular leaves help cacti survive in their environment? In what part of the cacti would photosynthesis occur?
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the lack of regular leaves help cacti to conserve water for their survival in the environment. Photosynthesis occurs in the thick stems of cacti.
how cacti live in extreme dry environment?
The cactus are unable to absorb too much sunlight since they lack regular leaves. Unlike other plants, it resists losing water through evaporation. moreover, to minimize water loss through transpiration, leaves are reduced to spines.
where does photosynthesis ocur in cacti?
Since cacti are plants without typical leaves, they carry out photosynthesis within their thick stems. Photosynthesis occur in geen- coloured, thick stems of cacti because of the presence of chloroplast.
The lack of regular leaves help cacti to conserve water for their survival in the environment. Photosynthesis occurs in the thick stems of cacti.
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frequencies of alleles in a population occasionally change due to random changes. this process is called
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Answer: Genetic Drift
Explanation:
It's all based on sampling errors.
How is phosphorus NOT returned to the abiotic portion of the environment?
A. Death and
decomposition
B.animal waste
C. Fertilizer use
D.acid rain
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Answer:
D) acid rain
Explanation:
Phosphorus is not returned to the abiotic portion of the environment through d. acid rain.
Abiotic portion of the environment are the nonliving components such as soil, water, or air.
Phosphorus is an essential element in any ecosystem that supports life and the functioning of the ecosystem. Phosphorus is used and returned into an ecosystem through various means in the phosphorus cycle.
Animals and plants are composed of phosphorus. When they die and decompose, phosphorus is returned to the aortic portion of the environment. Also, it is returned via the waste of animals.
Fertilizers containing phosphorus also add phosphorus back to the abiotic portion of the environment.
Acid rain occurs when Sulphur dioxide and nitrogen oxides mix and interact with oxygen and water in the atmosphere to form acidic compounds released as precipitation to the environment.
Therefore, phosphorus is NOT returned to the abiotic portion of the environment through d. acid rain.
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The following tracking model was created for Hurricane Ike on September 8, 2008. ^^
According to this model, at which point is the storm least likely to make landfall?
1) Point A
2) Point B
3) Point C
4) Point D
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Answer:
Its Point A
Explanation:
The following tracking model was created for Hurricane Ike on September 8, 2008. Map of Gulf Coast showing the forecasted path of Hurricane Ike on September 8, 2008. The storm’s current location, as of 5 p.m. on Friday, is just south of Cuba, over the Caribbean Sea. The “cone of probability” extends northwest. Point A is located along the Texas coast, right in the center of the cone’s widest point. Point B is located along the coast of Louisiana, toward the easternmost edge of the cone. Point C is located further east, along the coast of the Florida Panhandle. Point D is located on the border between Mexico and Texas, toward the southwestern-most edge of the cone. According to this model, at which point is the storm least likely to make landfall?
Which statement is a valid inference based on the information in the diagram? a.) species A is the common ancestor of all life on Earth b.) species D is more closely related to species E than to species F c.) species B is the ancestor of species F d.) species C is the ancestor of species that exist at the present time
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A valid inference base on the common ancestry diagram is species D is more closely related to species E than to species F. Option B
What is meant by common ancestry?A species can be said to be a common ancestor of all life on Earth when it is the most recent common ancestor of all living things.
This means that all living things share a common ancestor that is more recent than any other common ancestor.
The diagram shows that species D and E share a more recent common ancestor than species D and F. This means that species D and E are more closely related to each other than to species F.
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Nitrogenous bases are located on both stands of the DNA double helix. What is the significance of the nitrogenous bases?
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Answer:
the nitrogenous bases form hydrogen bonds between opposing DNA strands to form the rungs of the Twisted ladder or double helix of DNA or biological catalysts that is found in the nucleotides.
Explanation:
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as nutrients cycle through an ecosystem, they are moved from biomass pools to litter pools through processes such as death, molting, and the dropping of leaves.
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Nutrients cycle through an ecosystem as they are transferred from one organism to another through processes like predation, decomposition, and absorption. They can also be moved from biomass pools to litter pools through various natural processes.
For example, when an organism dies, its body may decompose, releasing nutrients back into the environment. Similarly, when animals molt or shed their skin or feathers, these materials can contribute to litter pools, which then decompose and release nutrients.
Additionally, when plants drop their leaves, these organic materials can also become part of the litter pool, where they break down and contribute to nutrient cycling in the ecosystem.
Overall, the movement of nutrients from biomass pools to litter pools is an important part of the natural cycling of nutrients in ecosystems, and helps to maintain the health and balance of these complex systems.
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please help time limit 10 points!!!
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Answer:
Carbohydrate
Explanation:
Wood is composed chiefly of cellulose, as are plant cell walls and cellulose is a carbohydrate.
An organism’s traits are determined by the
A. number of the A-T and G-C pairs in RNA
B. sequence of the deoxyribose sugar in DNA
C. number of thymine bases in RNA
D. sequence of the nitrogenous bases in DNA
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An organism’s traits are determined by the sequence of the deoxyribose sugar in DNA option (B)
what is an organism?Any living system that performs as a separate unit is referred to as an organism. All living things are made up of cells. Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea
what is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that form a double helix around one another. All known living things, including many viruses, have genetic material in their polymers that direct how they should function, grow, and reproduce. Nucleic acids include ribonucleic acid and DNA.
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Which gas is absorbed by plants in order to perform photosynthesis?
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Answer:
carbon dioxide
Explanation:
i searched it up sorry:)