Answers
Opioid receptors at the neuronal level are typically inhibitory, lowering neurotransmitter release presynaptically and hyperpolarizing neurons postsynaptically.
What is the purpose of neuroscience?The philosophical underpinnings Finding the biological processes through which neural systems influence behavior is the focus of neurobiology. The nervous system's cells have received a lot of attention in the last 50 years of neurobiology.
Is neuroscience an excellent major?The focus of a major in neurobiology and neurosciences is the investigation of the nervous system and brain. Unlocking the mysteries of how the brain functions will be possible thanks to this highly important subject. This might be a wonderful major for you if you are scientifically inclined and enjoy deducing how things operate.
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Related Questions
Carla was recently diagnosed with a brain tumour and has since completely lost
her appetite. The brain tumour is likely located in her:
dorsal hypothalamus
lateral hypothalamus
ventromedial hypothalamus
medial hypothalamus
Answers
Answer:
hypothalamus
Explanation:
Hunger is partly controlled by a part of your brain called the hypothalamus, your blood sugar (glucose) level, how empty your stomach and intestines are, and certain hormone levels in your body. Fullness is a feeling of being satisfied.
g A disease that destroys the adrenal cortex should lead to an increase in the plasma levels of: Group of answer choices Adrenocorticotropic hormone Cortisol Epinephrine Glucose
Answers
Answer:
The correct answer is Adrenocorticotropic hormone
Explanation:
Adrenocorticotropic hormone is a hormone from the anterior pituitary whose function is to stimulate the adrenal cortex (fasciculate and reticular areas); In other words, its biological function is to stimulate the secretion of cortisol. The ACTH test is used as an indicator of pituitary function and is useful in the differential diagnosis of: Addison's disease,Congenital adrenal hyperplasia,Cushing's syndrome.ACTH secretion is pulsatile and shows a diurnal variation in plasma concentrations, being maximum at approximately 8:00 am and minimum at midnight. ACTH secretion increases with stress.
A river that has flowed for a longer period of time will erode more rock than a river that has flowed over rock for less time
True or false
Answers
true because if the river has flowed longer its probably bigger and flows stronger
During the process of transcription, the information in
A) a protein is converted into RNA.
B) RNA is converted into a protein.
C) RNA is converted into DNA.
D) DNA is converted into RNA.
E) DNA is converted into a protein.
Answers
In the transcription process, information in DNA is changed into RNA.
Transcription and translation are the methods employed by cells to convert DNA into RNA and make proteins, respectively. The easiest way to explain a gene expression is by talking about the production of the gene's corresponding protein, and this complex procedure involves two main phases.
Transcription is a process that converts DNA information into a messenger RNA (mRNA) molecule in the initial stage. An enzyme known as RNA polymerase II catalyzes the synthesis of a pre-mRNA molecule, which is subsequently processed to generate mature mRNA, using the DNA of a gene as a template for complementary base-pairing during transcription.
As a single-stranded copy of the gene, the resultant mRNA has to be translated into a protein molecule.
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Label the following parts of a DNA polymer. Place your cursor on the boxes for hints. Hint: Keep in mind that some bases are held together by two hydrogen bonds, and others by three.
Answers
The picture here is the diagram of DNA. The various structures here are as shown in the picture are as per the Watson and Crick's model of DNA. Blue structures are of adenine, cytosine, guanine and thymine all bound by the hydrogen bonds.
What is the bond found in nucleotides?
The bond binding in the nucleotides is hydrogen bond.
Sugars and phosphorus are the basic backbone of the DNA structures. These make the strong backbone of the structure.
Hydrogen bonds are present in between the bases that are to be bound.
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Which two environmental changes would be likely to make an ecosystem less
stable?
A. A wildfire rages through a large portion of a forest.
B. A relatively wet summer leads to a larger plant population in a
desert.
C. A volcanic eruption wipes out organisms on an island.
D. A dry spring results in fewer seeds and seedlings on a prairie.
Answers
(Option A) A wildfire rages through a large portion of a forest would be likely to make an ecosystem less stable.
what is an environmental?The term "natural environment" or "natural world" refers to all naturally occurring, that is, unmanmade, living and non-living phenomena. The phrase is most frequently used to refer to the Earth or specific regions of the Earth.
what is an environmental changes?Environmental change is the alteration or disturbance of the natural environment, most frequently brought on by human activities and ecological processes. Various variables, such as natural disasters, human meddling, or animal contact, might cause changes in the environment.
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A postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. It has three presynaptic inputs-from neurons X, Y, and Z. Stimulation of
neuron X causes the postsynaptic neuron to depolarize by 0.5 mV. When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by
1 mV, If X fires 10 times and Y fires 10 times the result will be …
Multiple Choice
a subthreshold summation.
presynaptic inhibition.
threshold is reached and an AP is fired.
many APs are fired.
the membrane depolarizes.
Answers
When X fires 10 times and Y fires 10 times, the result will be a subthreshold summation.
Subthreshold summation happens when two or more presynaptic inputs that are sub-threshold (i.e., they cannot create an action potential) combine their effects on the postsynaptic neuron.
Here, the postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. When neuron X is stimulated, it depolarizes by 0.5 mV.
When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by 1 mV, which is sub-threshold (below -55mV).
Therefore, when X fires 10 times and Y fires 10 times, the postsynaptic neuron will experience subthreshold summation and no action potential will be fired.
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Which is not true regarding the mammalian cardiac cycle
Group of answer choices
both atria contract at roughly the same time, and then the ventricles
relaxation, or filling, phase is called diastole
the semilunar valve is the usual pacemaker
contraction, or pumping, phase is called systole
Answers
For this assignment, you will first research energy resources in your area. Next, you will gather
information about the political, economic, and environmental effects of the worldwide distribution and use
of the resources you use in your community. Then, you will develop a long-term sustainability plan for
your community. Finally, you will create a multimedia presentation of your sustainability plan.
Background Information
Many states and localities have a number of renewable and nonrenewable resources. Renewable
resources include those that can be replaced faster than they are used: solar power, wind power, timber,
and oxygen are just a few examples. Nonrenewable resources cannot be easily replaced. They are used
at a faster rate than they are created. These include oil, natural gas, coal, minerals, and precious metals.
Many states, municipalities, and businesses have sustainability plans. These are guidelines to avoid
depletion of natural resources to maintain balance in Earth's biological systems. As Earth's population
increases, humans will need to continually work to minimize their impact on the planet's resources. A
sustainability plan outlines specific actions and goals that will aid in this important work.
On a global scale, countries create their own sustainability plans because the global distribution of
resources have political, economic, and environmental effects. Their sustainable plans help them manage
resources and the effects of using these resources. The global distribution of resources also affects
states and communities. Sustainability plans involve details outlining how political, economic, and
environmental issues will be addressed.
Answers
The sustainability plan for my community involves replacing non-renewable energy sources like cola with renewable energy sources like solar and wind energy.
What is a sustainability plan?A sustainability plan outlines strategies for sustaining the program, activities, and partnerships and serves as a road map for accomplishing long-term objectives.
A community sustainability plan serves as a guide for creating a location where people can live, work, and play that is socially just, economically viable, and environmentally sound.
Programs for recycling and composting, renewable energy initiatives, and the use of community green teams to identify and prioritize sustainability requirements are some examples.
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What causes the earths cycle of the day and night? Select the words from the drop down menus to correctly complete the explanation.
Answers
Answer: The cycle of day and night on Earth is caused by the rotation of the Earth on its axis. As the Earth rotates, different parts of the planet are exposed to the Sun's light, causing daylight in some areas and darkness in others.
From what you know of tonicity, what can you say about the plant cells and the solutions in the test tubes
Answers
Answer:
Tonicity is the relative amount of solutes that is dissolved in solution which determine the direction and level of diffusion.
Explanation:
Tonicity is the relative amount of solutes that is dissolved in solution which determine the direction and level of diffusion. There are three types of tonicity i.e. hypertonic, hypotonic and isotonic solution. If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink due to more solute in the external environment. In an isotonic environment, there is no water movement occurs, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell. due to lower amount of water present inside the cell.
What are the repeating subunits That make up a nucleic acid
Answers
Answer:
Nucleotides
Explanation:
The basic, repeating subunit of nucleic acids are nucleotides. Each nucleotide is made up of a sugar (5 carbon ring), nitrogenous base (adenine, guanine, cytosine, or thymine), and phosphate. These subunits connect with each other via phosphodiester bonds.
This is going to probably sound ridiculous
But what happens when it snows on a mountain and the snow from that mountain cloud hits the ground does it become rain?
Answers
No, it won't rain, however, if the snow is much it can result in an avalanche.
Rainfall and water cycleThe cycle starts with sunlight warming the water on the earth's surface. In response to heat, water evaporates or changes into water vapor. Water vapor can be found everywhere. The cooling process causes the water vapor to return to water droplets.
The resulting clouds are made up of a lot of these droplets. Larger liquid droplets are created when smaller water droplets combine in a cloud.
The drips eventually get too big to stay in the cloud. The water cycle is restarted as they come down to Earth and it starts to rain.
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the increase of algae in a body of water
due to fertilizer runoff is called
O reclamation
O desertification
O eutrophication
O preservation
Answers
What defines a hypothesis?
Accepted idea
Educated guess
Observed inference
Testable explanation
Answers
Answer:
an observed inference
The correct answer is the second one, educated guess.
pleasse help very confused
Answers
The two correct statements that relate RNA, amino acids, and proteins are: A. RNA stores the genetic code and is transcribed into proteins. and C. Long amino acid sequences fold in specific ways to form proteins.
Statement A is correct. RNA (ribonucleic acid) plays a crucial role in storing and transmitting the genetic information. It carries the instructions from DNA to the cellular machinery involved in protein synthesis. Through a process called transcription, RNA molecules are produced by copying the genetic information encoded in DNA. These RNA molecules, known as messenger RNA (mRNA), carry the code from the DNA to the ribosomes, where protein synthesis occurs.
Statement C is also correct. Proteins are made up of long chains of amino acids that fold into specific three-dimensional structures. The sequence of amino acids determines the structure and function of the protein. The folding of the protein chain is driven by various interactions, including hydrogen bonding, electrostatic interactions, and hydrophobic effects. The specific folding pattern allows the protein to achieve its functional shape and perform its specific biological roles.
In summary, RNA plays a role in storing and transmitting genetic information, while proteins are formed from long sequences of amino acids that fold into specific structures. Therefore, Option A and C are correct.
The question was incomplete. find the full content below:
Which two statements correctly relate RNA, amino acids, and proteins?
A. RNA stores the genetic code and is transcribed into proteins.
B. Proteins are long chains of RNA that have been folded in specific ways.
C. Long amino acid sequences fold in specific ways to form proteins.
D. RNA is used to build amino acid sequences.
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Were your predictions in part A correct? How does your tap water compare to the outdoor water? If
possible, include similarities and differences in your answers.
Answers
Student A is correct by identifying tap water as a mixture, whereas Student B is incorrect.
Most outdoor water emanates from a natural source such as a river or lake and in most cases contain a similar mixture of substances as tap water. On the other hand, if the outdoor water is from a different source such as a well may contain differing properties and composition.
What is known as outdoor water usage ?Outdoor water usage can be described as the use of water for irrigation of gardens, lawns, and other ornamentals, and for replenishing swimming pools, fountains, ponds and much more.
In conclusion, we know that Tap water is mixture of various substances such as minerals, organic compounds, and sometimes pollutants.
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complete question:
Two students are identifying a sample of tap water.
Student A says that tap water is a mixture, while
Student B says that it is a compound. Were your predictions in part A correct? How does your tap water compare to the outdoor water? If
possible, include similarities and differences in your answers.
what is the answer to this
Answers
GIVING BRAINLIEST TO FASTEST CORRECT ANSWER (TIMED)
Two communities have a contamination area of 576 square meters and are given methods A, B, and C to clean up
the contamination area. Community 1 is a smaller community and therefore has less resources such as monies
available for the clean-up. Community 2 has more resources but more endangered species of plants and animals in
the contamination area. The longer the contamination is present the more harm there is to the environment including
living things. There are a variety of methods for cleaning up contamination in bodies of water and soil. Look at the
data table below and pick the best method for each community.
1. Using table 1, state which method would be best for community 1 and 2 at 10°C. Justify your answer.
Community 1:
Community 2:
2. Using table 1, state which method would be best for community 1 and 2 at 20°C. Justify your answer.
Community 1:
Community 2:
3. Using table 2, state which method and at what concentration would be best for community 1 and 2. Justify
your answer.
Community 1:
Community 2:
Answers
A. Considering table 1, the following procedure would work the best for communities 1 and 2 at 10°C:
Community 1: Method A because it is significantly less expensive than Method B and removes pollution more quickly than Method C.
Community 2: Method B because it preserves the lives of the local endangered species and removes contaminants more quickly than the other ways.
B. The approach that would work best for communities 1 and 2 at 20°C using table 1 is:
Community 1: Method C since it is less expensive and removes pollution more quickly.
Community 2: Process A since it removes pollution the fastest of the available options.
C. For communities 1 and 2, the technique and concentration that would work best are:
Community 1: Using Method A at 100 ppm is less expensive and less harmful to the environment.
Community 2: Compared to the other techniques, Method B at 200 ppm cleans up the contamination the fastest and with the least amount of environmental harm.
What are the main contaminants in the environment?Polyaromatic hydrocarbons, heavy metals, pesticides, organic solvents, inorganic solvents, and other pollutants are among the most prevalent environmental contaminants. Accidental discharge of these toxins into the environment causes the emergence of new diseases that affect human health as well as population deaths in large numbers.
Radon and biological agents such as molds, certain infectious agents such as bacteria or viruses, and dust mites also contaminate the environment.
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Which part of the virus houses the nucleic acid?
Answers
Answer: nucleic acid in a virus is enclosed in a capsid.
Explanation: Capsids are made up of protein subunits called protomeres. some viruses have a membrane also known as an envelope that surrounds the capsid and some do not.
Answer:
Capsid
Explanation:
Capsid - The capsid is the protein shell that encloses the nucleic acid; with its enclosed nucleic acid, it is called the nucleocapsid. This shell is composed of protein organized in subunits known as capsomers.
In Texas, paddlefish are
O stocked in the Pecos River
O a sport fish
O an endangered species
O all of the above
Answers
Answer:
The answer is an endangered species.
Explanation:
Paddlefish are now listed as a Texas threatened species and it is illegal to catch, kill, or harm a paddlefish in the state’s waters.
How the model in the image supports this statement: The body carries critical life functions through systems specialized cells
Answers
Some cells in the body have special jobs they are really good at doing. They are called specialized cells.
What is the specialized cells?The human body has lots of tiny cells, and each of them is different and has a special job to do. This group helps with important things needed to survive.
One type of cells carry oxygen and another type send electrical signals in our body. Specialized cells help the body do important things. Tissues: Groups of similar cells form tissues, such as muscle tissue, connective tissue, and epithelial tissue.
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Which increased age skeletal muscle show?
Answers
Answer: With aging, there is a decline in the ability to repair such oxidative damage thereby causing the cascade of events leading to muscular dysfunction.
Explanation: Aging results in a gradual loss of muscle function, and there are predictable age-related alterations in skeletal muscle function.
Compare and contrast a fossil with a trace fossil
Answers
Definition:
- Fossil: A fossil refers to the preserved remains or traces of organisms that lived in the past. It can include the hard parts of plants or animals, such as bones, shells, teeth, or wood.
- Trace Fossil: A trace fossil, also known as an ichnofossil, refers to indirect evidence of prehistoric life activities, such as footprints, burrows, tracks, trails, or even feces (coprolites).
Formation:
- Fossil: Fossils form when the remains or hard parts of organisms are buried in sediment or other materials, undergo mineralization over time, and become preserved.
- Trace Fossil: Trace fossils form when an organism's activity or behavior, rather than the organism itself, creates an impression or trace that is preserved in the geological record.
Information Provided:
- Fossil: Fossils can provide direct information about the physical characteristics, anatomy, and structure of ancient organisms. They can offer insights into their evolutionary relationships, adaptations, and paleoenvironments.
- Trace Fossil: Trace fossils provide indirect information about the behavior, locomotion, feeding habits, and ecological interactions of ancient organisms. They can reveal details about their movement patterns, burrowing behavior, or group activities.
Preservation:
- Fossil: Fossils typically require specific conditions for preservation, such as rapid burial, anoxic environments, or mineral-rich sediment. They are often preserved in sedimentary rocks, amber, or ice.
- Trace Fossil: Trace fossils can form in various types of sediments, including mud, sand, or volcanic ash. They can also occur in hardened substrates like limestone or volcanic rock.
Types and Examples:
- Fossil: Examples of fossils include bones, teeth, shells, petrified wood, and preserved soft tissues like feathers or leaves.
- Trace Fossil: Examples of trace fossils include footprints, tracks, burrows, nests, feeding traces, or coprolites (fossilized feces).
In summary, a fossil refers to the preserved remains or traces of organisms themselves, providing direct information about their physical characteristics. On the other hand, a trace fossil refers to indirect evidence of prehistoric life activities, offering insights into behaviors, locomotion, and ecological interactions. Both types of fossils contribute to our understanding of ancient life forms and ecosystems, but through different perspectives and types of evidence.
I hope this helps! :)
which factors make sequencing by the sanger chain-termination method possible? select all that apply.
Answers
The factors that make sequencing by the Sanger chain-termination method possible include a DNA strand whose 3' end terminates in a dideoxynucleotide cannot be elongated and new nucleotides are added only to the 3' end of a growing DNA strand (Option c and e).
What is the Sanger chain-termination method of DNA sequencing?The Sanger chain-termination method of DNA sequencing is a procedure used to obtain the linear order of nucleotides in the DNA molecule, which involves the use of dideoxynucleotides that stop the process of elongation and then electrophoresis to determine the order in the nucleotide sequence.
Therefore, with this data, we can see that the Sanger chain-termination method of DNA sequencing is based on the use of dideoxynucleotides that stop the process of elongation of the DNA sequence.
Complete question:
Which factors make sequencing by the sanger chain-termination method possible? select all that apply.
a. Complementary single-stranded nucleic acid sequences can come together to form a duplex molecule.
b. Single-stranded nucleic acid molecules can be immobilized on certain types of filter paper.
c. A DNA strand whose 3' end terminates in a dideoxynucleotide cannot be elongated.
d. Duplex nucleic acid molecules can be separated by size by means of electrophoresis.
e. New nucleotides are added only to the 3' end of a growing DNA strand.
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PLSS help
What is the energy input in the process shown in the model?
A. Light energy from the sun
B. Chemical energy from food molecules
C. Carbohydrate energy from glucose
D. Electrical energy from hydrogen ions
Answers
The energy source that is described in the image is light energy from the sun. The correct option is A.
What is chloroplast?Chloroplast is a cell organelle that contains chlorophyll and aids in the process of photosynthesis in the presence of sunlight using carbon dioxide and water.
The missing image of the question is attached as an image.
The energy source that is described in the image is light energy from the sun.
Thus, the correct option is A.
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What is heliozoa in the simplest definition? ( Science)
Answers
Answer:
A heliozoa is a phylum of single-celled aquatic animals that are related to the radiolarians
Explanation:
Answer:
heliozoa: microbial eukaryotes (protists) with stiff arms (axopodia) radiating from their spherical bodies, which are responsible for their common name.
preparation of thin sections of synthetic resins and wood-resin composites, and a new macerating method for wood
Answers
A VARIETY of softening techniques have been used to prepare hard material sections for microscopic examination, but none of them have been found to be effective for so-called "improved wood," which is made up of wood-resin compressed and bonded at a high temperature while being impregnated with phenol-formaldehyde or another resin.
The composition and distribution of fillers, coloring agents, reinforcements, and other internal structural characteristics can be determined by microscopic study of synthetic wood-resin and products containing such resins. It can also be used to distinguish between the various resins that are used as adhesives in plywood1. Some researchers have turned to the petrologists' method of grinding and polishing thin sections for examination by transmitted light and the metallurgists' way of studying a polished surface by reflected light in order to make microscope sections of the tougher forms of these materials.
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what separates the intracellular fluid from the extracellular fluid?
Answers
Answer:
cell membrane
Explanation:
hope it helps ❤
The intracellular fluid (ICF) and extracellular fluid (ECF) are separated by a semi- permeable cell membrane that is permeable to water but not to most solutes including electrolytes and proteins, which generally need transport systems to move across the membrane.
evaporation involved in transpiration occurs in the cell walls adjoining air spaces between the[ select ]. diffusion of water vapor to the atmosphere occurs between[ select ]. leaf hairs, also known as[ select ], stabilize the wet air just below leaves. this wet air is contained in the[ select ].
Answers
Evaporation involved in transpiration occurs in the cell walls adjoining air spaces between the spongy mesophyll cells . Diffusion of water vapor to the atmosphere occurs between stomatal guard cells . Leaf hairs, also known as trichomes , stabilize the wet air just below leaves. This wet air is contained in the boundary layer.
A type of vaporization called evaporation takes place on the surface of a liquid as it transitions into the gas phase. When humidity impacts the rate of evaporation of water, for example, a high concentration of the evaporating substance in the surrounding gas considerably slows down evaporation. Depending on how they collide, the liquid's molecules exchange energy as they come into contact. A molecule at the surface will escape and turn into a gas when it has enough energy to outpace the vapor pressure. Evaporative cooling happens when a liquid evaporates because the energy released from the evaporated liquid lowers its temperature.
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