Microtubules are very important in a number of cellular processes. They are involved in maintaining the structure of the cell and, together with microfilaments and intermediate filaments, they form the cytoskeleton. They also make up the internal structure of cilia and flagella.
Answer:
C) They organize and pull the chromosomes apart.
Explanation:
in the comments!
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What happens to the neurotransmitter once an action potential is propagated on the muscle sarcolemma
Answer:
broken down by enzyme
Explanation:
It is immediately broken down by an enzyme. The opening of sodium channels is essential for the initiation of an action potential in the muscle cell membrane
which hormone signals the breakdown of glycogen in the liver increasing glucose in the blood?
Answer:
The answer is glucagon
Explanation:
When the blood sugar level drops down, the glucagon hormone converts the glycogen into glucose and raises its level in the bloodstream.
Glycogen is a main source of energy for the body. Glycogen is stored in the liver. When the body needs more energy, certain proteins called enzymes break down glycogen into glucose. They send the glucose out into the body.
Which hormone stimulates the breakdown of glycogen in the liver into glucose?Glucagon's role in the body is to prevent blood glucose levels from dropping too low. To do this, it acts on the liver in several ways: It stimulates the conversion of stored glycogen (stored in the liver) to glucose, which can be released into the bloodstream.
How does glucagon increase blood glucose?
When your blood glucose levels trend lower or fall too low (hypoglycemia), your pancreas releases more glucagon. Glucagon helps blood glucose levels rise back up in multiple ways, including Glucagon triggers your liver to convert stored glucose (glycogen) into a usable form and then release it into your bloodstream.
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An environmental factor such as storms and extreme heat or cold that affects
population regardless of their density
Answer:
density-independent factor
Explanation:
density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
hope this helped!!!! have a great day!
An environmental factor such as storms and extreme heat or cold that affects population regardless of their density are known as density- independent factors.
What are density- independent factor?Density- independent factors are type of limitation factors that affects the population size in specific environment regardless of the density of that population.
Density of population can be defined as number of individuals per unit area.
Here storms and extreme heat are the limiting factors that reduces the population size regardless pf their density.
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_______ is the backup energy molecule that can be used to rapidly regenerate depleted ATP in active skeletal muscle.
Answer:
Phosphocreatine
Explanation:
Frederick Griffith made a scientific discovery in 1928. which best describes the knowledge about genetics before 1928?
Answer:
Scientists did not know how traits were inherited.
Explanation:
What is the main difference between organisms that share many characteristics and organisms that do not?
Answer:
The more derived characteristics organisms share,the greater their degree a kinship. For instance,a derived characteristic in plants is the presence of the vascular tissue.Although all organisms share similar traits.
Explanation:
Hope this helps.
how do mirnas function in controlling gene expression?
Answer:
The genes of the ath operon code for the enzymes necessary to use athelose as an energy source. ... How do miRNAs function in controlling gene expression? by binding to mRNAs and degrading them or blocking their translation. Name the starting molecule from which cDNA is synthesized and the enzyme that does the synthesis
Explanation:
Which of these solutions is the best way to help a city as its population grows
and its air becomes more polluted?
O A. Invest in urban sprawl to better disperse the pollution.
OB. Invest in alternative energy sources to reduce emissions.
O C. Reduce road construction to dissuade new residents.
O D. Reduce air-quality regulations so businesses can grow unimpeded.
Answer:
B. Invest in alternative energy sources to reduce emissions.
Explanation:
The best way to help a city as its population grows, and its air becomes more polluted, is to invest in alternative energy sources to reduce emissions. The correct option is B.
What is pollution?Pollutants are the name for these dangerous substances. Natural pollutants include volcanic ash, for example. They can also be brought by human activities, such as factory runoff or waste.
Air pollution is caused by solid, liquid, and gaseous pollutants. These gases and particles can be produced by factories, volcanoes, wildfires, dust, pollen, and vehicle and truck emissions.
To stop pollution, we must use alternative energies that do not cause pollution.
Thus, the correct option is B. Invest in alternative energy sources to reduce emissions.
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Which of the following structures of the respiratory system helps to prevent choking?
Answer:
b. is correct Epiglottis
Explanation: post protected
Why is an atom said to be electrically neutral? Please i need further explanation
From a plant cell leucoplast is removed. What will its effect be on the cell functioning?.
Answer:
Leucoplasts (λευκός leukós "white", πλαστός plastós "formed, molded") are a category of plastid and as such are organelles found in plant cells. They are non-pigmented, in contrast to other plastids such as the chloroplast.
Leucoplasts, specifically, amyloplasts
Lacking photosynthetic pigments, leucoplasts are not green and are located in non-photosynthetic tissues of plants, such as roots, bulbs and seeds. They may be specialized for bulk storage of starch, lipid or protein and are then known as amyloplasts, elaioplasts, or proteinoplasts (also called aleuroplasts) respectively. However, in many cell types, leucoplasts do not have a major storage function and are present to provide a wide range of essential biosynthetic functions, including the synthesis of fatty acids such as palmitic acid, many amino acids, and tetrapyrrole compounds such as heme. In general, leucoplasts are much smaller than chloroplasts and have a variable morphology, often described as amoeboid. Extensive networks of stromules interconnecting leucoplasts have been observed in epidermal cells of roots, hypocotyls, and petals, and in callus and suspension culture cells of tobacco. In some cell types at certain stages of development, leucoplasts are clustered around the nucleus with stromules extending to the cell periphery, as observed for proplastids in the root meristem.
Etioplasts, which are pre-granal, immature chloroplasts but can also be chloroplasts that have been deprived of light, lack active pigment and can be considered leucoplasts. After several minutes exposure to light, etioplasts begin to transform into functioning chloroplasts and cease being leucoplasts. Amyloplasts are of large size and store starch. Proteinoplasts store proteins and are found in seeds (pulses). Elaioplasts store fats and oils and are found in seeds. They are also called oleosomes.
how much blood is filtered by the kidneys each day?
Answer:
Many times a day, your blood circulates through your kidneys.
Explanation:
Approximately 170 liters per day and 7 liters per hour. About 150 quarts of blood are filtered by your kidneys in a single day relavent to 44 gallons. The tubules are responsible for returning water and other substances to your blood following their filtering through your glomeruli. Approximately one or two quarts of the water becomes urine.
Members of the Native American Standing Rock Sioux tribe share history and bonds based on a common lineage of blood relatives. This form of relationship is also known as
Given what we know about the dynamics of distinct relationship types, we can confirm that the shared history and bonds based on a common lineage of blood relatives describe a relationship known as a kinship.
Kinship is the relationship being described in the question, it does not leave any room to further describe this word as its precise definition is that it is a bond based on common lineage and blood relationships.
The remaining options for the question have a common theme. These options are:
Household
Cohabitation
Village
What each of these have in common and the reason they do not describe the relationship being described in the question due to the fact that none of these options include a blood relation to the members involved. There are all situations of individuals living together, often with a common lineage, but do not specify a blood relationship.
This question was answered based on the complete question found online which states:
Members of the Native American Standing Rock Sioux tribe share history and bonds based on a common lineage of blood relatives. This form of relationship is also known as
a. cohabitation.
b. a household.
c. kinship.
d. a village.
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definition of tissue
The group of similar cells which work together to perform a particular function is called a tissue....
You may take help from the attachment....
the main enzyme involved in linking individual nucleotides is
Answer:
The primary enzyme involved in this is DNA polymerase which joins nucleotides to synthesize the new complementary strand.
This pedigree chart tracks the inheritance of a recessive trait that is not linked. Based on the information in the chart, which of the following statements is true?
Individual #8 must be for the trait.
Individual #10 must be for the trait.
Individual #13 must be .
Individual #3 must be .
Answer:
A. Individual #8 must be heterozygous for the trait.
PLZ HELP how does the advancement of technology affect scientific models?
Answer:
Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.
Explanation:
hope it will help.....
2. Why are unicellular organisms considered organisms? Exp
Answer:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeastin aerobic respiration, what is the ultimate fate of the electrons released from the breakdown of glucose?
Answer:
They are combined with oxygen and hydrogen ions to form water.
Explanation:
The electron released from the breakdown of glucose transfers in the electron transport chain and is used in the formation of a proton gradient across the membrane.
What is aerobic respiration?In the presence of oxygen gas, cells undergo cellular respiration, which is how energy from food is produced. The majority of plants, animals, birds, humans, and other mammals all engage in this sort of respiration regularly. As byproducts of this process, water and carbon dioxide are created.
The energy that was stored in carbohydrates and lipids during photosynthesis is released during the process of aerobic respiration and made available to living things. Glycolysis, the link reaction, the Krebs cycle, and oxidative phosphorylation are the four phases.
Protons are pushed out of the matrix and into the intermembrane space as a result of the electrons moving through the electron transport chain. The electrons eventually reach oxygen, which reacts with protons to create water.
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At school we are taught that there is a dominant gene for brown eyes and a recessive one for blue.
In this sentence, dominant means:
A. having undergone mutation
B. of or relating to single-cell organisms
C. having reached full development, growth, or
maturity
D. producing a trait even when inherited from only
one parent
Answer:
D. Producing a trait even when inherited from only one parent
Explanation:
A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive.
what happens to an ecosystem if its river is destroyed
Answer:
the earth will eventually crack amd form a new river and the clouds will precipitate and cause water for the stream of the river
Answer:
If the river was to be destroyed it would take away many native plants and water to farms, homes, businesses, and schools that are local can be taken away.
Explanation: Rivers nourish entire ecosystems and give habitat to native plants and animals.
someone help me asap
Answer:
its c
Explanation:
because it has a definition on it
What are the two ways that harmful algal blooms can negatively impact an ecosystem? (Site 1).
Answer:
SEE EXPLANATION FOR ANSWER
Explanation:
Eutrophication: An abundance of cyanobacteria (an algal bloom) is caused by an excess amount of nutrients in the water (phosphorus and/or nitrogen) which depletes the water of oxygen which is vital for plant an animal life. Oxygen is crucial for the survival of an organism, so when there is a lack of oxygen, the results can be fatal. That is why when there are reports of algal blooms, there are almost always mentions of an abundance of dead fish, birds, and other water dwelling organisms (these organisms live in the water, drink from it or use it as breeding grounds etc,) Not only that, but algal blooms produce toxins that can make animals and humans fall ill.
Dead zones: As stated previously, harmful algal blooms deprive the water of oxygen.This can lead to the extreme and create dead zones. Dead zones are zones in an aquatic body where the oxygen levels are not sufficient enough to support aquatic life. Hence why there is no life in dead zones because all of the fish either die, or leave.
Both affect the population of native species and the overall wellbeing of the bodies of water.
Answer:
Eutrophication: An abundance of cyanobacteria (an algal bloom) is caused by an excess amount of nutrients in the water (phosphorus and/or nitrogen) which depletes the water of oxygen which is vital for plant an animal life. Oxygen is crucial for the survival of an organism, so when there is a lack of oxygen, the results can be fatal. That is why when there are reports of algal blooms, there are almost always mentions of an abundance of dead fish, birds, and other water dwelling organisms (these organisms live in the water, drink from it or use it as breeding grounds etc,) Not only that, but algal blooms produce toxins that can make animals and humans fall ill.
Dead zones: As stated previously, harmful algal blooms deprive the water of oxygen.This can lead to the extreme and create dead zones. Dead zones are zones in an aquatic body where the oxygen levels are not sufficient enough to support aquatic life. Hence why there is no life in dead zones because all of the fish either die, or leave.
Both affect the population of native species and the overall wellbeing of the bodies of water.
Explanation:
put above answer line for anyone who can only see preview :)
Why is human blood red and not blue such as squid & snail blood?
Hemoglobin contains copper that gives the blood the red color when exposed to
oxygen
Hemoglobin contains magnesium that gives the blood the red color when
exposed to oxygen
Hemoglobin contains iron that gives the blood the red color when exposed to
oxygen
Answer:
it contains iron that gives it the red color when exposed to oxygen
Human blood-red and not blue because Hemoglobin contains iron that gives the blood the red color when exposed to oxygen. The correct option is c.
What is hemoglobin?Hemoglobin is a red color pigment that is present in the blood. It contains a heme group that carries oxygen into the body and carries carbon dioxide outside the blood. It is red and in some animals, it is blue because of copper.
Hemoglobin is made up of four protein chains that each bind an additional ring-shaped chemical structure called heme. Our red blood cells are red because of the heme groups in hemoglobin. In turn, our blood is red because of the millions of red blood cells that it contains.
Therefore, the correct option is c. Hemoglobin contains iron that gives the blood a red color when exposed to oxygen.
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What is the base sequence of the DNA gene that originally produced this mRNA codon?
Answer:
A, TCA. Using the corresponding bases working backwards, A becomes T, G becomes C and U becomes A. Hope this helps
Explanation:
For the following DNA segment, please make the RNA segment that matches it.
ATT CGA AAG
Answer: DNA sequence: C C A C T C T T A C T T
mRNA sequence: G G U-G A G-A A U- G A A
Amino acid: GLY-GLU-ASN-GLU
Letter symbol: GENE
Explanation:
Whats up
explain the significance of chemical digestion!! marking brainliest please help
Answer:
Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat. While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food.
What would be most likely to happen to a plant that had working chloroplasts in its cells but had taken in a poison that kept mitochondria from working? (1 point)1.It would use its chloroplasts to do the work the mitochondria should have done.2.It would use the energy from the Sun to replace the energy provided by mitochondria.3.It would have a difficult time gathering enough solar energy during photosynthesis.4.It would not be affected since plants do not require mitochondria.
Answer:
It would use its chloroplasts to do the work the mitochondria should have done
During DNA replication, the ____ strand is assembled in the ____ direction from helix unwinding and is synthesized by ____ replication.
Leading Same Continuous
Explanation:
;)
During DNA replication, the leading strand is assembled in the same direction from the helix unwinding and is synthesized by continuous replication.
What is DNA replication?The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication. All living things replicate their DNA, which is the most crucial component of biological inheritance.
Because each of the two copies of DNA has one strand that is old and conserved and the other is newly created at the time of replication, this process is known as semiconservative replication.
Thus, during DNA replication, the leading strand is assembled in the same direction from the helix unwinding and is synthesized by continuous replication.
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Part C
Keep all three bags at room temperature in a sunlit area for a week. After one week, observe the three bags and write down any changes you see.
Answer:
After a week my cabbage had changed durasticaly. My cabbage has now grown and it looks pretty cool because before it looked so small. I do see a little bit of a change though. It looks like the cabbage had turned more green then before.
Explanation:
I know this is a strange little paragraph but I just thought this would help someone. So their you go. And at least try not to use the paragraph word for word, I don't want to get you in trouble.
Thank you!!!