Answer:
The correct option is: a deficiency of dopamine in the substantia nigra.
Explanation:
The substantia nigra is the principal site involved in the physiopathology of Parkinson´s disease.
Cells from this area degenerate and die progressively causing important degeneration in the central nervous system. The cells that die -with no known reason- are those that produce dopamine and proportionate dopaminergic innervation to the encephalon. In fact, almost all the symptoms exhibited by patients with the disease can be explained by the lack of dopamine in the substantia nigra.
This area uses the neurotransmitter to communicate neurons from the base ganglia. Ganglia are responsible of modulating and modifying movements.
The nigrostriatal system participates in planning and automatic execution of learned movements. When the ganglia activity decreases, so it does the amount and velocity of movements, something typical of the disease.
A starch molecule is like a:
protein
•chemical battery
•enzyme
•simple glucose
•reservoir of energy
Answer:
•reservoir of energy
Explanation:
Starch is one of the important source of energy or reservoir of energy. Starch is a chemical composed of several glucose units.
The starch breaks down into glucose units with the help of enzymes and these glucose units then circulate in the blood stream that is utilized as an energy source.
Some of the starch sources are potato, bread, beans, and rice.
state the states of magnesium + sulfuric acid = magnesium sulfate + hydrogen gas
Answer:
Mg(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂(g)
Explanation:
Magnesium is a solid metal and sulfuric acid is aqueous (cuz all acids are aqueous)
When they react the salt formed is also in aqueous form and a precipitate of hydrogen is given off. hence H is a gas.
Hope this helps (●'◡'●)
Growth Mindsets Assessment
a
Describe the meaning of the following quote, "The moment we believe that success is determined by an ingrained level of ability, we
will be brittle in the face of adversity."
b.
Have you ever had an experience where you believed that success was determined by ingrained or predetermined ability? Describe
that experience
Answer:
a. This quote means, if you believe that something you excel, or your ability to do something, in is ingrained in your mind you will eventually get to a point where you won't know what to do or your won't be good at it anymore and you will break, and not know what to do because you think your skill was ingrained into your mind. If you believe you can learn something to become better at it then you will be able to get past that point because you will know you just have to learn more about it.
Explanation:
Sorry if this isn't a very good answer I'm not in college!
In the "sandwich" ELISA pregnancy test, the antibodies that are fixed in the control zone bind specifically to:
Answer:
In the sandwich enzyme-linked immunosorbent assay pregnancy test, the antibodies in the control bind to the human chorionic gonadotropin (hCG) in the sample which could either be serum or urine of the patient. The horseradish peroxidase serves as an enzyme label that mediates in the reaction to facilitate this binding process.
Explanation:
In the sandwich enzyme-linked immunosorbent assay pregnancy test, the antibodies in the control bind to the human chorionic gonadotropin (hCG) in the sample which could either be serum or urine of the patient. The horseradish peroxidase serves as an enzyme label that mediates in the reaction to facilitate this binding process.
Data Collection: Pinky's science fair project in junior high focused on an observation that the
crickets outside her window chirped less frequently when the temperature was colder.
Fun Fact: There are free "cricket chirp calculators" online you can explore, which
didn't exist freely online when Pinky was in junior high.
Consider if data was collected consisting of the average number of cricket chirps
at different temperatures in her backyard. in the collection of data list at least 3 important constants?
Answer:
The three important constants are: The person who will collect the data (Pinky), the environment in which the data will be collected (Pinky's backyard) and the element who will provide the data (the crickets).
Explanation:
Constants are very important elements in carrying out controlled experiments. This is because they allow all measurements and data collections to be carried out in constant systems that do not change and that will provide unity and control to the experiment.
In short, the constants are the elements of the experiment that will not be modified while the experiment takes place. These elements are: the person who is conducting the experiment and who will collect the data (Pinky), the environment in which the data will be collected (Pinky's yard) and the element who will provide the data (the crickets).
sea turtles are what kind of vertebrae
Answer:
Reptiles
Explanation:
Snakes, lizards, turtles, crocodiles, and birds are reptiles.Reptiles are vertebrates that have scales on at least some part of their body, leathery or hard-shelled eggs, and share a number of other features
hope it helps :)
please mark it the brainliest!
what will the sun turn into when it runs out of fuel for fusion
Answer:
n
Explanation:
help me
Answer:
The sun will turn into a white dwarf, or also known as a dying ember of a star.
Explanation:
Once the fuel is gone the sun will no longer shine because there's no fuel.
Write 4-5 sentences explaining how the respiratory system is cardiovascular system works together?
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.why the parent Hydra is different from its offspring
Answer:
Hydra reproduce asexually, too. They grow a baby hydra on their side. When the new hydra grows big enough, it falls off and starts a life of its own. In both examples, offspring have exactly the same DNA as the parent and the same characteristics.
Explanation:
*Hope this helps*
Based on the data table below, which number would be the best choice for the highest number of the scale on the horizontal axis of a scatter plot showing this data?
Answer:
D. 70
Explanation:
The input variables are usually plotted on the x-axis (horizontal axis) to show their relationship with the output variables on the y-axis (vertical axis) on a scatter plot.
The input variable in the given table of values is time (s), while the output variable is distance (m).
The highest value for distance is 69. Distance would be plotted on the vertical axis. Therefore, the highest number to have on the vertical axis would be 70.
4) The Earth's atmosphere supports the biosphere by providing
A. Protection from all of the sun's electromagnetic radiation
B. Gases that reflect energy back to the Earth
C. Energy that powers the ocean's tides
D. Matter cycling that moves materials between the atmospheric layers
Your friend does not believe in the theory of evolution—specifically because he does not believe that life originated from organic molecules that came together in a primordial soup. As someone who has studied the theory of evolution, how might you respond to his objections
Answer:
Answered below
Explanation:
In the 1920s, Russian Chemist A.I Oparan and English geneticist Haldane, first conceived and developed independently, the theory of Primordial soup. The primordial soup theory suggests that life began in a pond or ocean as a result of the combination of the right amounts of chemicals from the atmosphere and some form of energy, under the right conditions, which resulted in the production of amino acids, the building blocks of proteins from which life evolved. This is suggested to have happened 3 to 4 billion years ago.
This theory was tested by Chemist Stanley Miller and Physicist Harold Urey, in 1950. They mixed gases thought to be present in the primitive earth and electrically sparked the mixture, which resulted in the formation of amino acids.
A physician is often able to detect homeostatic imbalances in the body by observing changes in the skin color.
a) true
b) false
your answer is quite True, my good sir/ma'am
A salt dissolved in water forms _____. anions and cations only anions only cations neutral atoms
Answer:
A salt dissolved in water forms neutral atoms
A diminished reflex response that may indicate damage to a segment of the spinal cord is a(n) _____ reflex.
"The procedure of cleansing of the blood through the use of a machine instead of the kidney is called"
Answer:
Hemodialysis.
Explanation:
Hemodialysis is a medical approach also called artificial kidney that uses machine to to draw out blood , filter the blood by removing waste product and toxins and send it to another part of the machine that will send the blood back to the body.
This is use when the kidney cannot perform this function on its own.
The machine is called hemodialyser.
2. Which of the following statements describes nonrenewable resources?
O
Nonrenewable resources are never replaced.
Nonrenewable resources can take millions of years to reform.
Nonrenewable resources can never be used again.
O
Nonrenewable resources are replaced within the average human lifespan.
Answer:
Exist in fixed amounts
Explanation:
Its correct on Edge so if ur doing edge the one above isnt an option!
Hoped i helped!
The following statements describe nonrenewable resources - Nonrenewable resources can take millions of years to reform as it is quickly used up than replenishes.
Nonrenewable resourceIt is a natural resource that is present beneath the earth's surface. It is present in a limited amount and takes millions of years to reform. So, it is a resource where it is used up quicker than replenished.
Non-renewable resources are the resources that can not reform in a normal human lifespan. An example of such resources is fossil fuels like coal or petroleum fuels.
Learn more about fossil fuels:
https://brainly.com/question/15782494
Thank you! Picture down below
Answer:
2.7 cm
Explanation:
2 long marks and 7 short marks
Each long mark is 1 cm and short mark is 0.1 cm
total length = 2(1) + 7(0.1)
= 2 + 0.7 = 2.7 cm
what happens in the body when you come home from school, smell cookies baking, run to the kitchen to see if they're done and take one? You eat the whole cookie and drink a glass of milk. How many body systems are involved? What role does each play?
Answer:
5 body system
Explanation:
The aroma from the cookies get in into the nostril with oxygen through respiration system.This diffuses through the nostril to the olfactory lobe.
Endocrine system stimulates the production saliva from the salivary glands into the mouth.This is salivation.
Running to the kitchen and picking one involved the activity of skeletal and muscular systems systems through contraction of muscles and supports by the bones
The olfactory lobe is in the olfactory system of the nervous system,This is transfer to the brain -to the olfactory cortex for analysis.
When the food is eaten,the taste sensation is sent to the orbital cortex for the blend of taste and aroma of the cookies to give a pleasant flavour.
Likewise the digestion of cookies begin in the mouth,while that of the milk starts in the stomach.This is digestive system
Given the following codons and their corresponding amino acids
UUU- Pheylalanine
CUA - Leucine
GCU - Alanine
AAA - Lysine
a) show the mRNA sequence which codes for the short peptide, lys-ala-phe-leu. Include what should come before and aftér this short message.
b) Show the TRNAS anticodons that would line up at the mRNA
c) Show the base sequence that would be found in the DNA double helix which carries the gene for this peptide.
Label the coding and template strand. You do not need to label the 5' and 3' ends.
Answer:
Given:
UUU- phenylalanine
CUA- Leucine
GCU-Alanine
AAA-Lysine
a) mRNA sequence or codons for the short peptide with amono acid sequence of lys-ala-phe-leu would be:
mRNA (Codons) 5’-AAA-GCU-UUU-CUA-3’
b) tRNA anticodon for the same amino acid sequence lys-ala-phe-leu on the base of mRNA 5’-AAA-GCU-UUU-CUA-3’ would be :
tRNA (Anticodons) 3’-UUU-CGA-AAA-GAU-5’
c) base sequence that would be found in the DNA double helix which carries the gene for this peptide -
5’-AAA-GCT-TTT-CTA-3’ Coding DNA Strand
3’-TTT-CGA-AAA-GAT-5’ Template DNA Strand
Which trait is deliberately selected for when breeding persian cats
Answer:An even-tempered cat, the Persian is known to enjoy a sunny window and show sudden bursts of kitten-like energy.
Persian At a glance
The Persian Cat Breed
The Persian is not known for a high degree of energetic exercise, so attention must be paid to weight management.
Weight range:
Male: large: >12 lbs.
Female: medium: 8-12 lbs.
Eye color:
Blue, Copper, Green, Hazel, Odd-eyed
Expectations:
Longevity Range: 8-11 yrs.
Social/Attention Needs: Moderate
Tendency to Shed: High
Coat:
Length: Long
Characteristics: Silky
Colors: White, Red, Cream, Black, Blue, Chocolate, Lilac, Silver, Golden, Cameo, Tortoiseshell, Blue-cream, Brown, Calico, Seal
Pattern: Solid Color, Tortoiseshell, Bicolor, Tricolor/Calico, Tabby, Smoke,
Explanation:
A selectively permeable membrane prohibits the movement of some substances across the membrane.
a. True
b. False
Answer:
false
Explanation:
A selectively permeable membrane prevents some compounds from passing through it. So, the given statement is True.
What is selectively permeable membrane?A form of biological membrane known as a selectively permeable membrane is one that restricts the passage of some molecules or ions while allowing others to pass through it via active or passive transport. By regulating the flow of chemicals into and out of the cell, this feature enables the cell to maintain a stable internal environment.
The plasma membrane as well as organelle membranes are two instances of permeable but selective membranes in cells. Semipermeable membranes are a type of polymeric, biological or artificial membrane that permits some molecules or ions to pass through them via osmosis.
Therefore, the given statement is True.
Learn more about selectively permeable membrane, here:
https://brainly.com/question/11635962
#SPJ2
Some scholars have viewed RNA as the original site of information storage in the primitive cell. One advantage of this view is that RNA can both store _____ and can act catalytically like a(n) _____.
Answer:
1. Genetic information
2. Protein
Explanation:
RNA world hypothesis was proposed by certain scientists due to their view of RNA being the original site of information storage in the primitive cell. This hypothesis was based on the self-replicating and catalytic abilities of the RNA molecule.
RNA was believed to be the main genetic material, with which life started with because of it's ability to store genetic information like DNA and catalyze chemical reactions like proteins. This is the major advantage of the RNA view as the original site of genetic information storage.
However, the DNA (genetic information storage) and protein (catalytic function) has recently taken over both roles from the RNA.
5. Which of the following graphs would best represent multiple
measurements of the same experimental setup over time? *
Line graph
Bar graph
Pie graph
Scatter plot
What phrase describes this plate boundary
Answer:may occur in oceans
is a type of transform boundary
iS a region where earthquakes occur
Explanation:
Answer:
D. is a region where earthquakes occur
Explanation:
When two tectonic plates slide/rub up against each other it causes earthquakes.
Plz mark brainliest so that I know if this helped or not. Have a great day!!! :)
The Fifth Amendment protects people from having to testify against themselves in court. allow their property to be searched. accept a court-appointed lawyer. answer questions posed by police.
Answer:
to testify against themselves in court
Explanation:
Answer:
The answer is A
Explanation:sorry if im wrong TwT
Describe epithelial tissues function as an external and internal barrier
Answer:
Epithelial tissue covers body surfaces that are exposed to the environment and also secretes internal regulatory molecules
Explanation:
The epithelium is one of the four main classes of animal tissues (i.e., epithelial, muscle, connective and nervous tissues). The epithelial tissue covers both external and internal body surfaces such as, for example, the skin and the digestive tract, respectively. In the skin, this tissue is a protective layer that prevents water loss and damage by external environmental factors or by mechanical friction. Moreover, in the digestive tract, epithelial tissue plays critical roles for the absorption of nutrients, as well as during regulation and excretion of hormones.
For the point shown: The x-coordinate is The y-coordinate is The point is in quadrant
Answer:
(-4, -1 ) if you are asking for what the number is for the point
Explanation:
Always remember the X coordinate is always first when trying to put in the number
when trying to get the number, line them up to where the number is if it is in the middle of the graph to make it easier to know.
is this what you are asking?
Drag each tile to the correct box.
Arrange the tiles to show the sequence of the steps in a scientific investigation.
make an observation
ask questions
construct a hypothesis
test the hypothesis
analyze the results
and make conclusions
communicate the results
↓
↓
↓
↓
↓
communicate the results
analyze the results
ask questions
construct a hypothesis
test the hypothesis
A specific location in America produces electricity only from fossil fuels and geothermal energy. The table below shows the amount of methane in the atmosphere of the location from 1960 to 2000. Based on the table, which of these conclusions is most likely correct about the period between 1980 and 1990? Electricity was generated only from fossil fuels. Electricity was generated only from geothermal energy. Several fossil fuel units were replaced by geothermal units. Several geothermal units were replaced by fossil fuel units.
Answer:
Several fossil fuel units were replaced by geothermal units.
Explanation:
Though geothermal units also release methane - along with several other pollutants - they release FAR less than a fossil fuel plants.
From the table we can conclude that, several fossil fuel units were replaced by geothermal units.
What is fossil fuel?
A fossil fuel is a non renewable energy obtained from hydrocarbons. This type of energy source releases lots of green house gases into the atmosphere.
The energy obtained from geothermal energy is clean and does not release green house gases into the atmosphere.
Thus, from the table we can conclude that, several fossil fuel units were replaced by geothermal units.
Learn more about fossil fuel here: https://brainly.com/question/79954
#SPJ2