Soon after being exposed to amanitine, the nucleoli of liver cells disintegrate, which prevents RNA polymerase II from blocking DNA transcription and interfering with DNA synthesis.
Amanitine does this via interacting with RNA polymerase II's 140,000-Dalton subunit. Amanitin, a bicyclic octapeptide that was isolated from the death-cap fungus Amanita phalloides, is exceedingly poisonous. Eukaryotic cells are poisonous to amanitin because it is a strong inhibitor of RNA polymerase II. A class of antibiotics known as DNA synthesis inhibitors targets the synthesis of DNA in bacteria and other organisms. Metronidazole, a 5-nitroimidazole, is effective against numerous bacteria and protozoans and hinders the formation of nucleic acids, which are the building blocks of DNA.
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Compare the processes by which a car and a human use "fuel" to perform work. What are the similarities?
What are the differences? Include the words HEAT ENERGY, CARBON, POTENTIAL ENERGY and KINETIC
ENERGY in your answer.
Edit Viow Incort
A car needs to be fueled before it can set in motion to posses a given amount of kinetic energy.
What is energy?Energy is the capacity of doing work. In physics, there exist different types of energy; among which are follows:
Kinetic energy: Kinetic energy can simply be defined as that energy a body posses due to its motionPotential energy: , On the other hand, potential energy is the energy a body has due to its relative position.Other forms of energy include:
Solar energyNuclear energyMechanical energySo therefore, a car needs to be fueled before it can set in motion to posses a given amount of kinetic energy.
Therefore, kinetic energy is the energy which allows a car to be fueled before it can set in motion .
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Which of the following is an organic molecule?
FeO
H2O
NaCI
CH4
Answer:
[tex]\boxed {CH_{4}}[/tex]
Explanation:
An organic molecule generally consists of hydrocarbons, or molecules that are made up of the two elements carbon and hydrogen.
∴ Hence, only one molecule here follows the requirement, which is :
CH₄
1. The Nitrogen cycle produces amino acids which allow plants to make
A. Sugar
B. Carbon
C. Nitrogen
D. Protein
Answer:
C. Nitrogen
Explanation:
this is because it is a nitrogen cycle
what is the difference between pressure potential and solute potential and give the formula for water potential
How many
strands will
each new DNA
molecule that is
created during
replication
have?
Answer:
Two strands.
Explanation:
Answer:
2 strands
Explanation:
DNA is a double-stranded helix. During replication, the helix is broken apart and DNA polymerase adds new nucleotides to both strands. This results in the creation of new DNA. DNA will always have 2 strands.
Describe how an enzyme’s shape changes as it binds to its substrate. Describe a condition under which an enzyme might to be able to bind to its substrate.
The enzyme’s shape changes as it binds to its substrate because enzymes are highly specific, the main reason for enzyme’s shape changes as it binds to its substrate is temperature, pH and time.
Why an enzyme is so specific for its substrate?Is due to the fact that the enzyme's active site has a complementary format to its substrate, promoting a contract, like a key that fits perfectly in a given fixation.
Substrate is the reagent on which an enzyme acts. When an enzyme binds to its substrate, the enzyme-substrate complex is formed. This binding takes place in a specific region, called the active site.
One exemple of an enzyme changing it's shape to binds to a substrate is pepsine. Pepsine changes it's shape to bind to proteins in the stomach and break them down into smaller peptides.
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Front legs of a cat and the arms of a human share a bone structure
Answer: It will be a homologous
Explanation:
3. Which of the following structures is the only hard part of the rotifer and the only part that is usually found as fossils?
A: stomach
B: foot
C: corona
C: trophi
The structures which is the only hard part of the rotifer and the only part that is usually found as fossils is trophi and is denoted as option D.
What is a Fossil?This is defined as the remains of plants and animals preserved in the earth crust.
The jaw of organisms known as rotifers are the only part found in fossils and is also referred to as the trophi which is used for mastication.
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Answer:
D. trophi
Explanation:
The only hard portion of the rotifer's body is the trophi. This area is the only part that is usually found in the fossil records.
How negative feedback mechanism occurs in blood carbon dioxide levels
Answer:
If you have elevated carbon dioxide in the blood, the body sends a signal to the lungs to breathe faster to eliminate the carbon dioxide build-up, thus causing a faster breathing rate.
Explanation:
raised carbon dioxide triggers an increase in respiratory rate, which decreases the amount of carbon dioxide, and the respiratory rate falls again.
What would the genotype of the parent mice need to be to produce offspring with only the genotype: Ff? (An empty punnett square is provided to show your work)
The genotypes of the parents that need to have to produce offspring with only the genotype Ff are FF and ff.
What is a Punnett square?A Punnett square is a diagram used in genetics to estimate genotypic and phenotypic frequencies in offspring.
In this case, only genetic crosses between homozygous genotypes are expected to produce 100% heterozygous offspring.
In conclusion, the genotypes of the parents are FF and ff.
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Which of these ideas correctly states a relationship between the practice of conserving energy and the effect that it has on people's health?
If people conserve energy, they will have more energy to exercise.
Energy conservation promotes less air conditioner use and warmer homes.
Energy conservation means less energy needs to be produced in power plants.
If people use more energy, there will be more energy related jobs.
The idea that correctly states a relationship between the practice of conserving energy and the effect that it has on people's health is: Energy conservation promotes less air conditioner use and warmer homes (option B).
How is energy conserved?To conserve means to use judiciously or wisely, therefore, energy conservation refers to the effort made to reduce the consumption of energy by using less of an energy service.
The conservation of energy helps to reduce workload on mechanical devices such as air conditioner, cooker etc.
Therefore, the idea that correctly states a relationship between the practice of conserving energy and the effect that it has on people's health is: Energy conservation promotes less air conditioner use and warmer homes.
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Describe two ways that technology has hurt the environment.
The two ways that technology has hurt the environment is pollution and mental health issues.
What is pollution?Pollution is defined as the release of harmful substances to the environment which can harm the organism living in that ecosystem.
Technology has both being a negative and a positive influence to the environment.
The two ways that technology has hurt the environment is pollution and mental health issues.
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Elevated levels of which of the following would increase the risk for atherosclerosis,
which could eventually lead to heart attack or stroke?
A. LDL cholesterol
B. HDL cholesterol
C. Statins
D. Insulin
The elevated level of HDL cholesterol would increase the risk for atherosclerosis, which could eventually lead to heart attack or stroke.
The blood flow is obstructed by a buildup of cholesterol plaque in the artery walls. The artery may suddenly become blocked by a clot when plaques burst. Atherosclerosis frequently goes unnoticed until a plaque bursts or the buildup becomes severe enough to obstruct blood flow. Exercise and a nutritious diet may be beneficial. Medication, artery-clearing surgery, and other forms of treatment are available. A CT scan of the heart called a "coronary calcium scan" quantifies the calcium content of the coronary artery walls. Atherosclerosis or coronary heart disease are indicated by calcifications, a buildup of calcium. Hospitals or medical imaging centers may do a coronary calcium scan.
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Answer:
LDL cholesterol
Explanation:
There are two types of cholesterol. LDL is considered "bad" cholesterol, and clogs arteries, while HDL is often referred to as "good" cholesterol and helps break up LDL. Statis are medications people can take that raise HDL levels. Hope this helps.
You have a pea plant with a yellow pea phenotype but do not know if the genotype is homozygous (YY) or heterozygous (Yy). What type of cross would you do determine the genotype of this plant and what would be the predicted phenotypes of the offspring?
A test cross must be performed to ascertain this plant's genotype. Yellow and green peas are the anticipated phenotypes of the progeny.
What is a test -cross?To ascertain whether a progeny is homozygous or heterozygous for a given trait, an F1 progeny is crossed with a double (homozygous) recessive parental progeny (green pea). This is referred to as a test cross.
All of the hybrid's offspring will exhibit the dominant (yellow) phenotype if the mother is homozygous (YY) dominant.
Mother yellow pea (YY) x green pea (yy) - P generation
Y y - Gamete
Yy (yellow) , Yy (yellow) -F1 generation
If the mother is heterozygous dominant(Yy), then half of the offspring will exhibit the dominant phenotype and the other half will exhibit the recessive phenotype and the ratio should be 1:1.
Mother yellow pea (Yy) x green pea (yy) -P generation
Y, y y - Gamete
Yy (yellow) , yy (green) -F1 generation
Therefore, it is concluded from the above explanation that we have to perform a test-cross to know the genotype of the pea plant.
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Using the molecular data, make a general statement which compares the "rabbit-whale" relationship to the "dog-pig" relationship. Does the cladogram agree with this statement? Explain your reasoning
The molecular data are not found here but rabbits and whales are linked with the dogs and pigs in a cladogram due to evolutionary relationships.
What is a cladogram?A cladogram is a graphical representation used to evidence the relationships between organisms due to a common evolutionary origin.
A cladogram is composed of a root that represents the common ancestor of the group and nodes where taxonomic groups diverge.
Cladograms based on molecular data use the homology level of nucleotide sequences of the genome to determine evolutionary relationships among individuals of different species.
In conclusion, rabbits and whales are linked with dogs and pigs in a cladogram due to evolutionary relationships.
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in 2016, Sub-Saharan Africa had a doubling time of 23.3 years.
calculate the growth rate
doubling time=70/ growth rate.
A. 4%
B. 3%
C. 5%
D. 2%
The correct answer is Option B: 3%.
In 2016, Sub-Saharan Africa, doubling time is 23.3 years, thus Growth rate is 3%.
What is doubling time?The doubling time is the time taken by a population to double in its size. This concept is applied to population growth, inflation, resource extraction, consumption of goods, the volume of malignant tumors, and many other things that tend to grow over time.There is an important relationship between the percent growth rate and its doubling time known as “the rule of 70”: to estimate the doubling time for a steadily growing quantity, simply divide the number 70 by the percentage growth rate.Therefore, Growth rate is 70 divided by doubling time (70/ doubling time).Here, Doubling time= 23.3 years. Growth rate= 70/23.3= 3%Learn more about population growth rate here:
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Energy is stored in biological molecules like carbohydrates, lipids and nucleic acids (ATP).
Describe how different forms of energy are converted at least three different ways in an autotroph.
ATP can be hydrolyzed to ADP and Pi by the addition of water, releasing energy. ADP can be "recharged" to form ATP by adding energy, combining with Pi in a process that releases a water molecule.
Where the energy of ATP?As energy is released, they form ATPs, binding phosphate to ADP. So the energy is in ATP. The process of binding phosphate to ADP is called oxidative phosphorylation.
There are three common energy-producing processes for making ATP:
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We can get along with other people better if we know
(A) what motivates people and what experiences they have had.
(B) how to manipulate people.
(C) how to avoid people completely.
Answer:
jey que tal
Explanation:
Which of the following is a nitrate?
A. NO3 -
B. NO2 -
C. NH3
D. N2
Answer:
A.) NO₃⁻
Explanation:
NO₃⁻ = nitrate
NO₂⁻ = nitrite
NH₃ = ammonia
N₂ = nitrogen (nitrogen naturally exists as a diatomic molecule)
Mrs. Jones has noticed a student acting oddly and is concerned. He seems afraid, has had odd bruises, and does not want to go home after school. Mrs. Jones shared this information with the principal and he said he would “take care of it.” Mrs. Jones should ________.
The student must be under threat of bullying hence Mrs Jones ought to quiz the student to obtain more information.
What should Mrs. Jones do?The fact that the student is hanging around and refusing to do home after school implies that the student must be under some kind of threat which has denied the student the freedom to go home.
What Mrs Jones ought to do is to take care of the bruises on the student and then quiz the student to obtain more information.
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Identifying Igneous Rock FormationFill in the blanks to complete each statement about igneous rock formation. intrusive rocks form when extrusive cools below Earth’s surface. rocks form when cools on Earth’s surface.
What is communal defense?
A. The group takes care of the old and young.
B. The group can defend each other and gang up on a predator when it comes to attack.
C. The group can leave behind those that harm the group.
D. The group shares food with each other.
Answer:
B
Explanation:
The group can defend each other and gang up on a predator when it comes to attack
Answer: B. The group can defend each other and gang up on a predator when it comes to attack.
The total number of individuals of a species worldwide
Answer:
8.7 million - plus or minus about a million
Explanation:
"The approach accurately predicted the number of species in several well-studied groups such as mammals, fishes and birds, providing confidence in the method
An angle measures 176 more than the measure of its of its supplementary angle.what is the measure of each
angle
Based on the definition of supplementary angles, the angles are: 2° and 178°.
What are Supplementary Angles?Angles that are supplementary have a sum that equals 180 degrees.
Let the measure of the supplement be x.
The other angle would be: (x + 176)
Therefore, we would have:
x + (x + 176) = 180
2x + 176 = 180
2x = 180 - 176
2x = 4
x = 2
One of the angles is, 2°
Second angle = x + 176 = 2 + 176 = 178°
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What is source water?
largest body of water in an area
body of water which drains used water
body of water which is far away from an area
body of water which supplies drinking water
Watch the first video below infection, which shows how SARS-CoC-2 infects and replicated inside human cells,
Identify the parts of the SARS-CoV-2 virus
7. Type the correct part of the virus,indicated by the number 7, in the space below.
__________________.
8. Type the correct part of the virus, indicated by the number 9, in the space below.
________________.
9. Type the correct part of the virus, indicated by the number 9, in the space below
_________________.
Question
HI how are you ?? I am fine what about you??
Saccharomyces cerevisiae is used in the making of all of the following EXCEPT ______
.yogurt
beer
bread
wine
Saccharomyces cerevisiae is used in the making of all of the above EXCEPT yogurt
What is Saccharomyces cerevisiae?Saccharomyces cerevisiae simply refers to those species of yeasts which is used in making beer, bread, wine et.c
So therefore, saccharomyces cerevisiae is used in the making of all of the above EXCEPT yogurt
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What type of plants contain two cotyledon?
A. Dicots
B. Monocots
C. Unicots
D. Multicots
Answer:
A. Dicots
Explanation:
A monocot, which an abbreviation for monocotyledon, will have only one cotyledon and a dicot, or dicotyledon, will have two cotyledons.
A mother who is heterozygous for Huntington’s disease and a father who is heterozygous for Huntington’s disease want to have a baby. What genotypes and phenotypes are possible for their child? Mom ____ x Dad ____ Write all of the genotypes and phenotypes from the above Punnett Square in the space below. Genotypes: Phenotypes: Fraction: Percent: _________ _________ ________ ________ _________ _________ ________ ________ _________ _________ ________ ________ Procedure: (Recessive Genetic Disorder) 9. Cystic fibrosis is a genetic disorder that is caused by a defective RECESSIVE gene that causes the CFTR protein to be dysfunctional. If a person has 1 or 2 dominant genes, they are normal. If a person has 2 recessive genes, they have the disease. When this protein works incorrectly, chloride is not moved properly in the cell and results in mucous in various organs to become unusually thick and sticky. CF is typically diagnosed in infancy, but even with modern medical advances, life expectancy is usually less than 30 years. 10. What letters will be used for the genotypes of Cystic Fibrosis? a. Normal: ____ b. Cystic Fibrosis: ____ 11. What genotype does someone have if they are homozygous normal?____ 12. What genotype does someone have if they are heterozygous normal? ____ 13. What genotype does someone have if they are homozygous for Cystic Fibrosis? ____ Complete the following Punnett Squares: Mom Dad
For a person to develop Huntington's disease, he must be homozygous (HH) or heterozygous (Hh) for the dominant allele.
What are the possible genotypes and phenotypes?Huntington’s disease is a type of defective dominant disease. This means that any person having 1 or 2 defective dominant genes, have the disorder. But, if a person has 2 recessive genes, they are normal.
Mom (Hh) x Dad (Hh)
H h
H HH Hh
h Hh hh
Genotypes: HH, Hh, hh (1:2:1)Phenotype: Huntington’s disease, Normal (3:1)Genotypic percent: 25% HH, 50% Hh, 25% hhPhenotypic percent: 75% Diseased, 25% normalCystic fibrosis is a type of a recessive disease i.e., a person having 1 or 2 dominant genes is normal. But a person having 2 mutated recessive genes are diseased.
Normal: CC, CcCystic fibrosis: ccHomozygous normal: CCHeterozygous normal: CcHomozygous cystic fibrosis: ccLearn more about Huntington's disease here:
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How we save water during washing clothes
Answer:
-Use Less Hot Water. Saving money in the laundry room has to start with hot water usage because turning cold water to hot water is the most energy-intensive part of the laundry process. Use warm or cold water when possible, and you instantly save on water energy costs.
-Upgrade to an Efficient Washing Machine
-Skip the Extra Rinse. Many washing machines have an option for an extra rinse cycle, so skip this step to save water.