Why are chemical messengers, or neurotransmitters, needed to get information across the synapse?
Answers
Chemical messengers, or neurotransmitters, are needed to get information across the synapse because they facilitate the communication process between neurons.
Neurotransmitters are chemical substances that act as messengers between neurons and can travel from one neuron to another. They attach to receptors on the receiving neuron, allowing information to be sent from one neuron to the next. The neurotransmitters can either excite or inhibit the receiving neuron, depending on the neurotransmitter type and receptor type.
Thus, neurotransmitters play an important role in information transmission between neurons, which is why they are so important for neural coordination. They facilitate the passage of important information across the synapse.
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Related Questions
What is the highest level of organization?
Answers
Answer: domain
The domain of a thing is the highest ranking of classification.
Answer: biosphere?
Explanation:
Difference between eukaryotic cells and prokaryotic cells.
Answers
I hope this helps you
........
Answer:
eukaryotic cells are those which have a membrane-bound nucleus that contains genetic material, as well as organelles that are also membrane-bound. Whereas, prokaryotes are cells that don’t have a nucleus or membrane-encased organelles.
Explanation:
hope it will help you !
what is a photosynth
Answers
Answer: The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation: This is the exact definition of Photosynthesis.
Answer:
I assume you mean photosynthesis
Explanation:
photosynthesis is the process in which all plants undergo where they turn sunlight into nourishment and nutrients.
How can a wave that is so powerful and tall on land be
unnoticeable at sea?
Answers
because it is futher away from were you are
At which kind(s) of plate boundaries does subduction occur?
Answers
Subduction occurs at convergent plate boundaries, where two tectonic plates are moving toward each other.
There are three types of convergent plate boundaries, depending on the type of crust that is involved:
Oceanic-Continental Convergent Boundary: This occurs when an oceanic plate collides with a continental plate. The denser oceanic plate is subducted beneath the less dense continental plate, leading to the formation of a deep-sea trench and a volcanic arc on the overriding continental plate.Oceanic-Oceanic Convergent Boundary: This occurs when two oceanic plates collide. The older and denser plate is subducted beneath the younger and less dense plate, leading to the formation of a deep-sea trench and a volcanic island arc.Continental-Continental Convergent Boundary: This occurs when two continental plates collide. Neither plate is subducted because they have similar densities. Instead, the collision leads to the formation of a mountain range and intense earthquakes.To learn more about plate boundaries, refer:-
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which steps of recombination caused that only half of all recombination events generate a recombinant phenotype? group of answer choices strand exchange ligation recognition and alignment resolution band migration flag question: question 5
Answers
Only 50% of recombination events result in a recombinant phenotype due to homologous recombination. strand exchange ligation recognition and alignment resolution band migration flag is a collection of possible answers.
Only 50% of all recombination events result in a recombinant phenotype, according to Resolution Ligation Recognition and Alignment Band Migration Strand Exchange. FtsK, which triggers recombination by making XerD catalyze the exchange of the initial pair of strands, is necessary for chromosome dimer resolution. Replicative recombination, which creates a new copy of a DNA segment, is the third type. To create a new copy of the transposable element at a different place, many transposable elements use a replicative recombination mechanism.
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Explain the consequences of a base substitution mutation in relation to the processes of
transcription and translation.
Answers
Answer:
A base substitution is when the base in the DNA molecules is replaced with another base.
Explanation:
This substitution changes the base sequence of mRNA during transcription and in translation the amino acid sequence coded for by the mRNA will have a mistake in it because of its change in base
1. describe the structure of the heart, the pattern of blood flow through the valves and chambers of the heart, how the heart as a muscle is supplied with blood, and what happens when the resting heart must suddenly supply an exercising body.
Answers
The heart has two atria and two ventricles. It is enclosed in a tough membranous sac called the pericardium. The cavity between these is filled with pericardial fluid. The right side pumps de-oxygenated blood to the lungs, and the left side pumps oxygen-rich blood to all other tissues.
Brief anatomy of heart:The heart exerts more physical force than any other muscle. The heart pumps blood through the cardiovascular system, a network of arteries and veins, which is situated in the center of the chest between the lungs. Blood is pushed toward the body's tissues, cells, and organs. Every cell receives oxygen and nutrition from the blood, which also eliminates the waste products produced by the cells, such as carbon dioxide. Through an intricate web of arteries, arterioles, and capillaries, blood is transported from the heart to the rest of the body. Veins and venules transport blood back to the heart The left atrium, right atrium, and two lower chambers known as the left and right ventricles make up the four chambers that make up the heart. The tricuspid, pulmonary, mitral, and aortic valves are its four valves. The largest veins in the body, the superior and inferior vena cava, supply non-oxygenated blood to the right atrium, which then pumps it to the right ventricle via the tricuspid valve. Blood is pumped from the right ventricle to the lungs, where it is oxygenated, via the pulmonary valve. Blood that has been oxygenated by the lungs enters the left atrium and is pumped to the left ventricle via the mitral valve. Blood that is rich in oxygen is pumped from the left ventricle to the aorta and the rest of the body through the aortic valve. The coronary arteries follow the surface of the heart and provide the heart muscle with blood that is enriched in oxygen. The heart is also covered in a web of nerve tissue, which carries the intricate signals that control contraction and relaxation. The pericardium, a sac, encircles the heart.
Sudden stress causes the left ventricle to have an increased need to supply blood, leading to hypertrophy.
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Which organelles are ONLY found in plant cells?
Select all that apply.
Vacuole
Cell Wall
Chloroplasts
Nucleus
Endoplasmic Reticulum
Answers
Answer:
I think it's cell wall and chloroplasts
What could explain the significant increase in antibodies to non-Lyme disease antigens (blue line)?
Answers
What is first immune response?
First immune response is the initial reaction of the immune system to invading microorganisms which includes the formation of memory B cells.
That is to say, upon the first exposure of invading antigens such as non-Lyme disease antigens, the body will generate antibodies together with memory cells that will fight against the non-Lyme disease antigen should in case a second exposure occurs.
When a second exposure finally occurs, as seen in the image, the memory B cells already generated in the first exposure would release a high amount of antibodies to fight the non-Lyme disease.
11. List two physical properties of soil.
list three conditions necessary for the germination of seed.
E.P BETHEL INTERNATIONAL SCHOOL- ACCRA NEWTOWN
END OF SECOND TERM EXAMINATION- 2020
INTEGRATED SCIENCE-JHS ONE
SECTION B (ESSAY) 6OMARKS
Answer any four questions in this section. Each complete question carries 15 marks.
2. a. i. State the reasons why some seeds are nursed.
(3mar
(2mar
(1x3.
(2mc
(2m
b. I. List three (3) conditions necessary for the germination of seed.
ii. State two functions of roots.
'c. (1) What is dispersal of seeds?
(11) State two characteristics of seeds dispersed by wind.
3. a. Apiece of stone has a mass of 360g. When it is put into water in a glass,
the level of water rises from 60.0cm to 90.0cm.Calculate the density of
(3r
(5
the stone.
b. i. List three benefits of vegetables to humans.
ii. Give two reasons why soil air is important.
c. 1. Define the term soil profile.
ii. State two ways in which soil profile is important in crop production
Answers
Answer:
Number 11 is the soil color and the soil texture.
Number 2.a.i. is to protect the seeds from harsh weather conditions e.g. sunlight rainfall etc.
b. water, oxygen and warmth
c.1) Seed dispersal is the scattering of seeds from a mother plant to new areas.
11) Seeds dispersed by wind have wing like structures.
Seeds dispersed by wind are light.
3a. Density=Mass/Volume
=360g/60cm³ then cancel zero and zero then cancel by 6 once by 36÷6 we get 6g/cm³
3bi)Vegetables are a source of food to humans.
Vegetables provide herbal medicine to humans.
ii)Plants require oxygen for germination.
Organisms in soil require air to breathe.
3c)Soil profile is the verticle arrangement of layers from top to bottom.
3d)It helps a farmer to know the fertility of the soil.
Explanation:
a fruit fly of genotype br/br is testcrossed with a fruit fly of genotype br/br. in 84% of the meioses, there are no chiasmata between the linked genes, but in 16% of the meioses there is one chiasmata between the genes. what proportion of the progeny willbe br/br?
Answers
The proportion of the progeny will be Br/br is 4%,
A chiasm is a form of the crossing of two chromatids of a chromosome with its homologous chromosome pair. Crossing over is the exchange of non-sister chromatid segments of a pair of homologous chromosomes. Crossing over occurs during the meiotic division I, namely at the end of prophase I or the beginning of metaphase I.
B and R are linked genes in fruit flies. Fruit fly genotype BR/br crossed with br/br. In 84% of meiosis there are no chiasmas between linked genes; In 16% of meiosis there is a single chiasm between genes.
Parental: BRbr >< brbr
Genom: BR, br, bR, Br >< br
Filial:
BR/br_____ ¼
br/br______¼
bR/br_____ ¼
Br/br______¼
The proportion of the progeny will be Br/br:
Br/br ¼ ⇒ ¼ x 16% = 40%
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The exploration of the mid-Cayman rise is intended to discover _______. a. what life may have been like before the evolution of photosynthesis b. the origins of photosynthesis c. life in shallow, coastal regions d. the chemical composition of undersea mountains Please select the best answer from the choices provided A B C D
Answers
Answer: a. what life may have been like before the evolution of photosynthesis
Explanation:
The mid-Cayman rise is an area that has little light coming in but still has life in it.
Plants are able to provide food for themselves and the rest of us by using photosynthesis to make food. Photosynthesis uses sunlight to make this food.
One would think that photosynthesis was around for as long as plants were around but this is not the case. Life on earth had existed long before photosynthesis became a valuable process to plants.
There is therefore curiosity as to how this life fed itself without using photosynthesis and this is why the life in the mid-Cayman is being explored. The way the life makes food there in the absence of light will shed light on how plants made food before photosynthesis.
Answer:
A
Explanation:
How is continental crust different from oceanic crust? question 5 options: continental crust is more dense and lighter. continental crust is thicker and more likely to sink. oceanic crust is thinner and more likely to sink. oceanic crust is thicker and more dense.
Answers
In comparison to oceanic crust, which is typically 5-10 km thick, continental crust is often 20–70 km thick. Oceanic crust is more recent and has a density of 3 g/cm3, whereas continental crust is older and less dense (2.7 g/cm3).
What distinguishes the oceanic crust from the continental crust?When compared to oceanic crust, which is basaltic (i.e., richer in iron and magnesium than granite) and has a density of around 2.9 to 3 grammes per cubic cm, continental crust is generally granitic and has a density of about 2.7 grammes per cubic cm.
Is crust from the oceans denser than crust from land?Dark-colored rocks known as basalt and gabbro make up the majority of the oceanic crust. It is lighter-colored rocks called andesite and granite that make up the continental crust, which is thinner and denser. Because of its low density, continental crust "floats" high above the viscous mantle, forming dry land.
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How are photosynthesis and cellular respiration related?
A. The equations for photosynthesis and cellular respiration are opposites of each other
B. Photosynthesis provides the energy for cellular respiration
C. Both processes take place in mitochondria
D. Only plants perform photosynthesis, and only animals perform cellular respiration
Answers
Answer:
I think it is B. Photosynthesis provides the energy for cellular respiration
If it isn't I'm super sorry!
Explanation:
Which of the following is NOT a way the normal microbiota of the intestine helps to prevent infection?
a. It produces acids that lower the pH of the stomach.
b. It speeds up the process by which microbes are flushed from the digestive tract.
c. It consumes food and occupies space, outcompeting potential pathogens.
d. It generates large quantities of oxygen that kill anaerobic pathogens.
Answers
The correct answer is d, the normal microbiota of the intestine does not generate large quantities of oxygen that kill anaerobic pathogens.
In fact, the normal microbiota of the intestine is mostly anaerobic and does not rely on oxygen for survival. Instead, the normal microbiota of the intestine helps prevent infection by producing acids that lower the pH of the stomach, speeding up the process by which microbes are flushed from the digestive tract, and consuming food and occupying space, which outcompetes potential pathogens. These actions make it difficult for harmful microbes to establish themselves in the intestine, helping to maintain a healthy gut microbiome. It is important to note that disruptions to the normal microbiota, such as from antibiotic use, can lead to an overgrowth of harmful pathogens and increased risk of infection. Therefore, maintaining a healthy gut microbiome is crucial for overall health and disease prevention.
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Will mark brainliest
Answers
Answer:
2)D
3)B
4)C
5)A
6)A
7)D
8) I'm not sure
The destruction of the fibrin of a blood clot is called __.
fibrinolysis
Answers
The normal disintegration of clots is referred to as primary fibrinolysis. Secondary fibrinolysis is the breakup of blood clots caused by a medical condition, medication, or other factor.
This could result in severe bleeding. Blood clotting usually happens when a blood vessel is damaged. Pay attention to the pronunciation. (throm-BOL-ih-sis) Breaking apart a thrombus (blood clot) that is impeding blood flow. Drugs inserted through a catheter (tube) into the blood clot may dissolve it.
Plasmin degrades fibrin into soluble components known as fibrin degradation products (FDPs). FDPs compete with thrombin and hence limit clot formation by blocking fibrinogen conversion to fibrin.
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Why do living things need water, food, and space to live? To maintain homeostasis.
Answers
2.)Water- You could only survive for about three days without water. You get water from the fluids you drink and the food you eat.
3.)Air- Air is a mixture of several different gases, including oxygen and carbon dioxide. Most living things use oxygen in the chemical process that releases energy from food. Oxygen may come from the air or may be dissolved in water.
4.)Habitat- All organisms need a place to live that contains all of the things they need to survive. Some organisms, such as elephants, require a large amount of space. Other organisms may live their entire life in one place.
Circle the correct answer. Suppose there is a population of elephant seals with one sexually dominant bull (male seal). All other male seals seldom if ever get the opportunity to mate. The population of seals is stable and neither grows nor shrinks. (Part A) The bull's Darwinian fitness is probably a.) >1 b.) =1 C.) <1 (Part B) The other male seals' Darwinian fitnesses probably average: a.) >1 b.) =1 c.) <1 (Part C) The average Darwinian fitness of the individuals in the entire population is probably a. )>1 b.) =1 C. )<1
Answers
Part A: The bull's Darwinian fitness is probably (a.) >1
Part B: The other male seals' Darwinian fitnesses are probably average: (c.) <1
Part C: The average Darwinian fitness of the individuals in the entire population is probably (b.) =1
Part A: Darwinian fitness is defined as the contribution of an individual to the gene pool of the following generation relative to the average for the population, as a result of the selection pressures. An organism with a high fitness level is more likely to survive and reproduce than an organism with a lower fitness level. In the elephant seal population, the sexually dominant bull has the highest Darwinian fitness since it has a greater likelihood of passing on its genes.
Part B: Since other male seals do not get the opportunity to mate, their fitness levels are relatively low, which suggests that their Darwinian fitness level is below average.
Part C: The average Darwinian fitness level of the population is 1 in a stable population that neither grows nor shrinks. This suggests that the rate of the organism's population with a higher fitness level is similar to that of the population with a lower fitness level.
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A lack of interest in imaginative play is:
unusual for one-year-olds.
O
normal for three- to four-year-olds.
normal for five-year-olds.
a sign of delays or concern in three- to four-year-olds.
Answers
A lack of interest in imaginative play is normal for five-year-olds.
Children engage in imaginative play, sometimes referred to as pretend play or symbolic play, in which they create and act out scenarios in their heads. Playing dress-up, role-playing, or creating scenarios with toys or props are all examples of this type of play, which involves inventing imaginary settings, people, and objects. Children's development benefits from imaginative play because it fosters creativity, social skills, and problem-solving abilities.
Therefore, the correct option is C.
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can i have some help on number 2?
Answers
Answer:
C) The waves amplitude
Explanation:
Answer:
The measurement labeled E is the wave's amplitude.
Explanation:
A vertical rise in a wave length is the amplitude of the wave.
The distance between each curve is the wavelength, if it is a long distance than it is slow if it is a short distance than it is fast.
The waves period is the bottom of the wave where no movement is constant.
Please I need this today
Answers
Answer:
Replication occurs in three major steps:
the opening of the double helix and separation of
DNA strands, the priming of the template strand,
and the assembly of the new DNA segment. During
separation, the two strands of the DNA double helix uncoil at a specific location called origin.
How can having more species make an
ecosystem more sustainable?
Answers
Answer:
Biodiversity will increase which will make the ecosystem more immune towards diseases and changes in weather.
Explanation:
Example: If u have 1 type of fish in a lake and suddenly the water became salty for some reason, that kind of fish may not survive and if it doesn't there will be no life left in the lake, but if there were multiple types of fish and other animals then some of them would be able to survive and adapt on the change in environment. Hope I helped!
Fossil fuels are a ______ resource because it would take too long to form new supplies.
polluting
nonrenewable
damaging
renewable
Answers
it cannot be polluting since polluting does not mean it would take too long to form new supplies.
it cannot be damaging because damadge is synonymous with pollute.
it cannot be renewable because fossil fuels are not sustainable.
Which is not a characteristic of a Prokaryote?
A) Simple
B) Has a nucleus
C) Replicates via cloning
D) Always single cell
Answers
Answer:A
Explanation:
why are some mutations more harmful then others
Answers
Answer:
depending on their context or location
Explanation:
suppose a pigeon that is homozygous for the no grouse allele mates with a heterozygous pigeon. what is the expected frequency of the homozygous no grouse genotype in the offspring a) 0% b) 50% c) 75% d) 100%
Answers
The expected frequency of the homozygous no grouse genotype in the offspring is option B: 50%.
The no grouse allele suppresses the grouse allele in frequency. This means that when a homozygous no grouse pigeon mates with a grouse genotypic pigeon, who is heterozygous for the trait's genotype, the anticipated frequency would become 50%.
Having two identical alleles of a specific gene is referred to as being homozygous. An individual is homozygous for a gene, for instance, if they have two copies of the same allele. The term heterozygous describes the presence of two distinct alleles of a single gene. An individual is heterozygous for a gene, for instance, if they have one copy of allele A and one copy of allele B.
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Which part of the microscope is needed to be adjusted to have better contrast when viewing a specimen under the microscope?
Answers
part of the microscope is needed to be adjusted to have better contrast when viewing a specimen under the microscope is condenser.
A microscope is a lab tool used to study items that are too small to be seen with the human eye. The study of small structures and objects under a microscope is known as microscopy. Microscopic refers to something that, without the use of a microscope, is undetectable to the eye. There are many distinct kinds of microscopes, and they can be categorised in several ways. One option is to explain how an instrument interacts with a sample and generates images, for as by passing an electron or light beam past the sample in its optical path, measuring photon emissions from the sample, etc.
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How does scientific knowledge continue to change over time?
A. Living systems are constantly changing, so previous explanations
no longer apply.
B. Scientists always change their assumptions and explanations to
keep their work interesting.
C. Each new discovery is based on new data and ignores previous
investigations.
OD. Scientists reevaluate current assumptions and explanations as
new data and technology become available.
Answers
Answer: the answer is D
Explanation: