This active region is known as a replication fork due to its Y-shaped structure. The DNA polymerase is part of a multienzyme combination that synthesises both new daughter strands' DNA at a replication fork.
What is and how does a replication fork operate?A replication fork comprising two single-stranded templates is created when DNA helicases unwind double-stranded DNA before polymerases do. A lone DNA double helix can be duplicated by replication processes to two DNA helices, that are then split into daughter cells during mitosis.
The replication fork is missing.At the point of replication, a replication bubble is created by opening the circular bacteria chromosome's double-stranded DNA. A replication fork, or Y-junction, which divides double-stranded DNA into two single strands, is present at each end of the bubble.
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Drag the tiles to the correct boxes to complete the pairs.
Match each step of the scientific method with its description. see image ...........................................
Making observations: Bread, when kept in the open for a long time, shows the presence of mold
Asking questions: What causes mold growth on bread?
Constructing hypotheses: Changes in temperature may affect the growth of mold on bread
Testing hypothesis: Keep the bread in different locations, changing the temperature at each location
Result analysis and conclusion: Increased temperature leads to mold growth on bread
Result communication: Make a presentation of the data and explain it to the class.
Scientific methodThe scientific method is a rational order of steps through which scientific knowledge is obtained. The steps are:
Making observationsAsking questionsConstructing hypothesesTesting hypothesisResult analysis and conclusionResult communicationObservations have to do with making perceptions about events. Next is asking questions about why those events are the way they are.
Guesses are made to answer the questions raised. This represents the hypothesis stage.
Next is to test the correctness of the hypothesis using suitable experiments.
Results from the experiment are analyzed using relevant statistical analysis and conclusions are made from there.
The outcome of the whole procedure is then communicated to the scientific world.
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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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In which of the following situations would you least expect to find anaerobic respiration occurring?
Question 17 options:
a) a vat in which beer is being manufactured
b) the sediments at the bottom of a pond
c) a runner's leg muscle during a 400-m dash
d) a human brain engaged in writing this test
e) the inside of a bacterium living inside a human intestine
Answer: a) a vat in which beer is being
Explanation:
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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Identify the independent clause in each sentence below.
1. (We arrived late) because we couldn't find the theater.
2. (The play started) before we found our seats.
3. (We got one of the special) programs that were being sold.
4. When the play was over, (the audience applauded.)
5. After we saw the show, (we went for a walk.)
6. Although the night was cool, (the walk was enjoyable.)
7. While we were walking, (I noticed the moon.)
8. Since it was a full moon, (it was shining brightly.)
9. (We walked along the lake) until it became very late.
10. By the time I got home, (it was almost midnight.)
Explanation:
mhrssxxxx please mark as brainllest
Which structure is highlighted and indicated by the leader line?
Answer:
glomerulus and glomerular capsule.
Explanation:
The highlighted structure is glomerulus and glomerular capsule .
What is glomerular capsule?The glomerulus is covered by a two-layered pouche known as bowman's capsule and the space in between both the walls of the capsule is called bowman's space. Bowman's capsule is also known as malphigian capsule.
The glomerular capsules are located in the outer part of the kidney, known as the cortes. The main function of glomerulus capsule is to filter plasma that lead to a production of glomerular filtrate.
The glomerular capsule contain a cluster of microscopic blood vasle and capillaries known as glomerulus were waste product are filterd from the blood. The space in between both the walls of the capsule is called bowman's space. Bowman's capsule is also known as malphigian capsule.
Therefore, the highlighted structure represents glomerulus and glomerular capsule .
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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.
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.
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.
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:
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.
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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Visit your home and search for living and nonliving things
In a home, living things include microorganisms (e.g., bacteria), pets and humans, whereas non-living things may include water, viruses, etc.
What is a living thing?A living thing is any biological system composed of cells, which are the fundamental unit of life.
Viruses do not have cells and therefore they can be considered non-living parasitic entities, whereas abiotic factors such as water are also considered non living things.
In conclusion, living things include microorganisms and humans, whereas non-living things include water.
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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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If you observed that the Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, where are you most likely located?
South Pole
a location in the mid-latitudes
North Pole
near the Equator
Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, you are most likely located at the North pole.
The sun does not set above this latitude during the summer because of the Arctic Circle Phenomenon. The Arctic Circle is a fictitious boundary. The Arctic Circle's North Pole experiences extended periods of continuous sunshine, mostly in the months of June, July, and August. The reason for this is that Earth's axis is slanted by 23 degrees, and during the summer months when it rotates, the North Pole aligns with our star. For instance, the farthest reaches of Norway.That is why during the summer months of June, July, and August, the Sun did not set for a full 24 hours.
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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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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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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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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??
"How does shade affect plant growth?"
It will affect the plant growth entirely. If it is a plant that needs sunlight to grow it will not grow but if it is a plant that needs shade it will depend on the hade to grow
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)
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
You conduct an experiment to determine the concentration of ions in an unknown solution. You place 300mL inside a dialysis bag and place the bag into a beaker of water with an ion concentration of 100 ppm (parts per million). When you check the experiment an hour later, the bag is swollen and has taken in water. What can you conclude?
The conclusion is that water has moved from the beaker into the bag by osmosis because concentration of solute in the beaker is lower than that in the bag.
What is osmosis?Osmosis is the movement of water molecules across a semipermeable membrane from a solution of low solute concentration to one of high solute concentration.
The concentration of solute in the beaker is lower than that in the bag, therefore, water will move from the beaker into the bag by osmosis.
In conclusion, the solution in the beaker is of lower solute concentration than in the bag.
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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
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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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
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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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.
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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Plants in the tropical
rainforest:
A. Experience some of the most
fertile soil in the world.
B. Help each other to grow and
flourish.
C. Are constantly competing for
scarce water resources.
D. Are numerous and in constant
competition for sunlight.
The rainforest is one of the most diverse biomes. Options A and D. Experience some of the most fertile soil in the world. Are numerous and in constant competition for sunlight.
What si the tropical rainforest?The tropical rainforest is a biome is located near the equator, where precipitations are abundant and the average temperature is elevated most of the year.
As a result of the climatic conditions, this biome gives shelter to a huge number of living organisms. The canopy structure provides many refuges for plants and animals and is an important source of food. It also favors interactions between species.
There are different plant species, such as epiphytes, lianas, stranglers, aerial-rooted pants, and tabular-rooted plants, among other vegetation forms.
Fanerophic species dominate this biome. Evergreen tall trees might reach up to 50 meters in height. They develop dense foliation and branches, becoming a refuge and source of food for many species.
Vegetation does not need to develop strategies for surviving the dry season. Instead, they need to develop strategies for competing for light and nutrients.
Since vegetation is very dense, woody species grow in height looking to get greater sun radiation. Competition for sunlight is quite significant, generating different strata canopy at varying levels in the forest.
Abundant vegetation and other factors such as temperature, precipitation, and natural cycles create one of the most fertile soils favoring the growth and development of many species.
According to this framework, the correct options are A and D. Experience some of the most fertile soil in the world. Are numerous and in constant competition for sunlight.
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