Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication? (A) DNA polymerase begins adding nucleotides at the 5 ' end of the template. (B) The polarity of the DNA molecule prevents addition of nucleotides at the 3' end. (C) Replication must progress toward the replication fork. (D) DNA polymerase can add nucleotides only to the free 3' end.
Answers
A new DNA strand elongate only in the 5' to 3' direction during DNA replication because the "polarity of the DNA molecule prevents addition of nucleotides at the 3' end" .
DNA replication occurs in the 5' to 3' direction. DNA polymerase can only add nucleotides to the 3' OH group of the growing DNA strand, this is why DNA replication occurs only in the 5' to 3' direction.
DNA polymerase can only add to the 3' end, so the 5' end of the primer remains unaltered. Consequently, synthesis proceeds immediately only along the so-called leading strand.
Hence, the correct answer will be option (B)
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Related Questions
Kimberly Carrot loves to practice her passion – gardening! She often talks to the slugs that enjoy munching on her vegetables. In fact, she sometimes goes inside and returns with a saltshaker and sprinkles the slugs with salt. Kimberly’s neighbors think that is rather strange. Why does Kimberly Carrot sprinkle the slugs with salt? Describe, in detail, what happens to the slug in terms of osmosis.
Answers
Answer:
Salt and pepper go together, but salt and slugs don’t pair so well. If you’ve ever battled the slimy gastropods in your garden (or just had a sadistic bent as a kid), you know that a few pinches of salt can kill them. But why? What is it about salt that causes the creepy crawlies to wither?
The answer, in a word, is osmosis: the process that occurs when a solution meets a permeable membrane. A solution is a homogenous mixture of two (or more) substances where one substance, the solute, is dissolved in the other, the solvent. When you have a solution on both sides of a permeable membrane, the solvent tends to pass through the membrane to whichever side has more solute so that concentration on both sides is evened out. That’s osmosis.
Two students below described a part of Earth's middle layer:
Bob: The deepest part
Joe: The semi-fluid part
Which part of the middle layer did Bob and Joe describe? (4 points)
A. They both described the mesosphere.
B. They both described the asthenosphere.
C. Bob described the mesosphere and Joe described the asthenosphere.
D. Bob described the asthenosphere and Joe described the mesosphere.
Answers
Answer:
c
Explanation:
how does the dna polymerase that is synthesizing the lagging strand stay bound to its template dna strand and coordinate with the dna polymerase on the leading strand?
Answers
The dna polymerase that is synthesizing the lagging strand stay bound to its template dna strand and coordinate with the dna polymerase on the leading strand is DNA polymerase on the leading strand attaches to DNA polymerase on the trailing strand.
DNA replication is the process of doubling the DNA chain assisted by DNA polymerase before mitosis or meiosis I in the S phase of the cell cycle. The DNA is made of two strands and each strand of the parent cell acts as a template for the production of complementary strands.
The lagging strand is the synthesized DNA strand and is located in the 5'→3' direction at the replication fork. During the replication process, nucleotides will be added to the end of the sugar from the Okazaki fragment with the help of DNA ligase enzymes. In order for the lagging strand to remain attached to the template DNA strand, the DNA polymerase on the leading strand attaches to the DNA polymerase on the trailing strand.
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______________ direct RNA polymerase to the initiation site. Group of answer choices enhancers operons inducers primers promoters
Answers
Promoters direct RNA polymerase to the initiation site, the correct option is E.
Promoters are specific DNA sequences that serve as binding sites for RNA polymerase during the initiation of transcription. They are crucial in directing RNA polymerase to the correct start site for transcription to occur. Promoters contain specific nucleotide sequences recognized by RNA polymerase and other transcriptional regulatory proteins.
When RNA polymerase binds to the promoter region, it forms a stable transcription initiation complex, allowing for the initiation of RNA synthesis. Promoters play a vital role in gene regulation, as different promoters have distinct sequences and affinities for RNA polymerase and other regulatory factors, the correct option is E.
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The correct question is
______________ direct RNA polymerase to the initiation site.
A) Enhancers
B) Operons
C) Inducers
D) Primers
E) Promoter
When a substance or large molecule is enclosed by a membrane in a vesicle within the cell, the membrane of the vesicle fuses with the cell membrane and releases the substance out into the cell's surroundings. This is:
exocytosis
endocytosis
facilitated diffusion
osmosis
Answers
Answer:
Exocytosis
Explanation:
In an area of East Texas, the most intense competition would most likely occur between white-tailed deer and
A. brown bears
B. squirrels
C. other white-tailed deer
D. coyotes
Answers
Given what we know, we can confirm that the most intense competition would most likely occur between white-tailed deer and other white-tailed deer.
Why would white-tailed deer most likely compete with themselves?This has to do with food sources. Of the many animals listed, none of them share a food source with the white-tailed deer. The deer are herbivores that feed primarily on grass and shrubs. The bears and coyotes are carnivores that feed on other animals such as the deer themselves. While squirrels are herbivores but do not compete with the deer for food.
Therefore, given that other deer are the only animals listed that are after the same food source, we can confirm that the most intense competition would most likely occur between white-tailed deer and other white-tailed deer.
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Answer:
c
Explanation:
just took it
What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Answers
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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Are plant cells and animal cells exactly the Same? Explain and give examples.
Answers
Answer:
Explanation:
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. ... Beyond size, the main structural differences between plant and animal cells lie in a few additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles.
Answer:
They are not.
Explanation:
Yes they are both cells but plant cells have organelles that the animal cells don't have. Such as chloroplast, the cell wall, and the central vacuole.
HELP ME PLZ
What happens when water gets warm ?
A.It precipitates, or fall from the sky.
B.It evaporates, or turns into a gas.
C.It condenses, or turns back to a liquid.
Answers
What makes the MRSA strain of staph more dangerous than common bacteria?
Answers
Solution:
The correct answer is:
The answer lies in the resistance to antibiotics that occurs with this bacterium. Indeed, Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of staph bacteria that's become resistant to many of the antibiotics used to treat ordinary staph infections. This makes infections with this bacterium dangerous, as most antibiotics are given seem not to work in patients infected with this bacterium.
Can I Get Some Help PLEASEEEE i Will Give Brainliest if you tell how to do it after you answer it correctly
3. Summarize patient A's history: Chromosomes obtained from a nearly full term fetus of a 40 year old female.
Which chromosome set has an extra? _diagnosis______
What diagnosis would you give this patient (what abnormality)? ______________
Summarize patient B's history:
Summarize the history of patient:
Answers
Answer:
As per the observation, it is clear that the correct answer is a medical book as it will have the medical history of the patient.
Gigantism is an extreme situation this is almost usually due to an adenoma, a tumor of the pituitary gland. Gigantism happens in sufferers who had immoderate boom hormones in childhood. The pituitary tumor cells secrete an excessive amount of boom hormone (GH), which main to many adjustments withinside the body.
How is gigantism diagnosed?
If gigantism is suspected, the prognosis is commonly shown via way of means of taking blood assessments to degree the stages of boom hormone and insulin-like boom component 1 (IGF1) circulating withinside the blood. IGF1 is launched into the blood often via way of means of the liver in reaction to boom hormone.
Thus it is clear that medical books will have a medical history of patent with gigantism.
hoping that help
select the correct text in the passage
a. the object orbits a white dwarf star
b. the object also appears to have 6 moons of its own
c.current images show that object is a rectangular in shape
d.it has slowed orbital. Orbiting it stars every 480 days
Answers
Explanation:
d . it has slowed orbiting it star every 480 days..
is answer
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Explain how cellular respiration and photosynthesis work together in plants.
Answers
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧Answer:✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Converts carbon dioxide and water into oxygen and glucose
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧Explanation:✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?
A) Behavioral isolation
B) Hybrid sterility
C) Temporal isolation
D) Mechanical isolation
Answers
Answer:
D. Mechanical isolation
Explanation:
I’m not really sure but I hope that you get it right!
Answer:
C
Explanation:
I JUST TOOK THE TEST
Double bonds are present in the majority of the fats of which of the following foods?
a. lard
b. eggs
c. margarine
d. peanuts
Answers
Answer:
D
Explanation:
Peanuts
The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
What is RNA polymerase?RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus. The enzymes prevent many genetic mutations from being expressed.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it and primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
Therefore, The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
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Density = 2.7 g/cm
1. An object has a mass of 10 grams and a volume of 5 cm? What is the density
of the object.
Density = mass/volume
Density =
Density =
Answers
Prompt
Use the model here to describe the transfer of matter and flow of energy from one trophic level to another within an ecosystem. All of
the following must be addressed in your response to receive full credit:
d. Discuss the transfer of biomass when one organism eats another. Use your knowledge of digestion to discuss how food is broken
down and used by the consumer.
b. Explain what happens to the energy that is not transferred from one organism to another.
c. Explain why there are typically fewer organisms at the top of an energy pyramid.
d Use specific numbers and calculations to support your explanation.
<< Read Less
Answers
a. When one organism eats another, the biomass is transferred from the prey to the predator.
b. Energy that is not transferred from one organism to another is lost as heat through metabolic processes such as respiration.
c. There are typically fewer organisms at the top of an energy pyramid because energy is lost at each trophic level due to inefficiencies in energy transfer.
d. To support the explanation, let's consider a simple energy pyramid with three trophic levels: grass (producer) -> rabbit (primary consumer) -> fox (secondary consumer).d maintenance.
Once the consumer ingests the food, it is broken down through digestion into simpler compounds such as glucose, amino acids, and fatty acids, which are used to generate energy, grow, and reproduce. The breakdown of food occurs through the process of catabolism, which releases energy that can be used by the consumer. The nutrients that are not used for energy or growth are eliminated as waste products.
The energy that is not transferred is eventually dissipated into the environment as heat, which cannot be used by other organisms. As a result, the total amount of energy available to support life in an ecosystem is limited and decreases as it moves up the food chain.
If we assume that the grass stores 10,000 kJ of energy, the rabbit will only receive about 10% of that energy (1,000 kJ) due to untransferred energy. The fox will receive even less, around 10% of the rabbit's energy (100 kJ). This shows how energy is lost at each trophic level, leading to fewer organisms being able to be supported at higher levels.
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Women are especially susceptible to severe bone degeneration characterized by loss of bone mass and increased bone porosity. This condition is called A. osteoarthritis. B. osteoporosis. C. bone atrophy. D. dendritic spreading.
Answers
Answer:
osteoporosis.
Explanation:
it because degeneration characterized by loss of bone mass and
increased bone porosity. osteoporosis.
Neurotransmitter release is an example of(1 point) cyclical behavior. autocrine signaling. paracrine signaling. cellular miscommunication.
Answers
Answer:
Neurotransmitter release is an example of paracrine signaling.
It is the release of chemical ligands called neurotransmitters by the presynaptic cell (the cell emitting the signal).
Hope it helps.
An example of ( Neurotransmitter release ) is ; Paracrine signalling ( C )
Neurotransmitter release is stimulated by the presence of nerve impulse arriving in the presynaptic terminal of the nervous system. the released neurotransmitter finds its way into the synaptic gap before binding receptors present at the postsynaptic terminal ( membrane ).
while the release of the neurotransmitter occurs at the active zones of the presynaptic terminal.An example of the these releases includes the paracrine signalling , Dopamine, Glutamate.
Hence we can conclude that an example of Neurotransmitter release is Paracrine signalling.
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select all the statements that define evaporation (vaporization) and condensation.
Answers
The incorrect statement concerning evaporation is: "Increasing the surface area of the liquid decreases the rate of evaporation." Option A is correct.
In reality, increasing the surface area of the liquid actually increases the rate of evaporation. This is because evaporation occurs at the surface of the liquid, and a larger surface area provides more space for molecules to escape into the vapor phase. Evaporation is a process by which a liquid changes into a gas or vapor state.
It occurs when molecules near the surface of a liquid gain enough energy to overcome intermolecular forces and escape into the surrounding space as vapor. Increasing the temperature of the liquid is one of the factors that can significantly affect the rate of evaporation. As the temperature rises, the average kinetic energy of the molecules increases, resulting in more molecules having sufficient energy to transition from the liquid to the gas phase, option A is correct.
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The question is inappropriate; the complete question is:
Which of the following statements concerning evaporation is incorrect?
A. Increasing the surface area of the liquid decreases the rate of evaporation.
B. Increasing the temperature of the liquid increases the rate of evaporation.
C. Evaporation causes the liquid temperature to decrease.
D. Molecules with energies considerably above average are those that escape from the liquid.
You are studying a population of Dlugosch’s Small Octopus that has been suffering from a skin disease. In your work, you find that some individuals have more resistance (immunity) to the disease than others. You remember learning about life history trade-offs in your Ecology class, and you hypothesize that immunity trades off with investments in other major life history traits in the octopuses. You decide to design a study to test whether higher immunity leads to a lower number of eggs produced by females.
9. State a prediction for what the results of your study would look like if they support the hypothesis given in the Mission.
Make a figure of results that would be consistent with that prediction:
Label y axis with the variable that should be on the
Label x axis with the variable that should be on the
Draw results bars or lines consistent with your prediction
If the infection reduces the population size of the octopus, would you predict an r or a K strategy would be more likely to evolve (based on what we discussed in class)? Explain why that life history strategy would be favored in a small population, and give at least two traits associated with the strategy that you predict.
Answers
If higher immunity leads to a lower number of eggs produced by females in Dlugosch's Small Octopus, then there will be a negative correlation between immunity level and egg production.
A K approach would be more likely to develop if the illness causes the octopus population to decline. Resources are few in a tiny community, therefore long-term stability and survival are prioritized over rapid population expansion. The K approach emphasizes having fewer kids while allocating more resources to ensuring their survival and welfare. In a small population, the following two characteristics connected to a K strategy might be more prevalent:
Increased parental care: Parents invest more time and resources in raising a smaller number of offspring to increase their chances of survival and reproductive success.
Delayed maturation: Individuals take longer to reach reproductive maturity, allowing them to invest more time in growth, development, and building up resources before reproduction.
These traits help ensure the survival and success of the limited number of offspring in a small population, aligning with the K-selected life history strategy.
In this figure, the y-axis represents the number of eggs produced by females, and the x-axis represents the immunity level of the octopuses. The bars or lines would show a decreasing trend as the immunity level increases, indicating a negative relationship between immunity and egg production.
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6. Your myth: dogs and cats are related
o Fact: they are in the same domain, kingdom, phylum, class, order
o Evidence:
o 1. they are in a lot of the same things but they are not the same because they are not in the same species or family.
o 2.
i need one more eason why they arent related
Answers
Answer:
dogs and cats are in the same kingdom, phylum, class, family, and order but the are of different species
Explanation:
this is because dogs are Canis familiaris and cats Felis catus, therefore they cant produce viable offspring. Moreover, in the cat family cats are basically loners, they are independent creatures. While dogs are mostly found in pack.
the towns current population is 4790 people. the population is expected to increase by 7.0% over the never 5 years. based on the current per capita consumption (12,000 m^2), how much land must be cleared to accommodate population growth
Answers
Approximately 4.02 hectares of land would need to be cleared to accommodate the projected population growth over the next 5 years based on the given parameters.
To calculate the amount of land that must be cleared to accommodate population growth, we need to determine the increase in population and multiply it by the per capita consumption of land.
Given that the current population is 4790 people and it is expected to increase by 7.0% over the next 5 years, we can calculate the population growth as follows:
Population growth = Current population \(\times\)Population growth rate
= 4790 \(\times\) 0.07
= 335.3 (rounded to the nearest whole number)
Therefore, the population is projected to increase by approximately 335 people.
Now, we can calculate the amount of land that needs to be cleared to accommodate this population growth. Assuming a per capita consumption of 12,000 \(m^2\) (or 0.012 hectares), we can calculate the land required as:
Land required = Population growth \(\times\) Per capita consumption
= 335 \(\times\) 0.012
= 4.02 hectares
Hence, approximately 4.02 hectares of land would need to be cleared to accommodate the projected population growth over the next 5 years based on the given parameters.
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in the film, paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all mussels. in the control plots the number and diversity of species was basically unchanged. which statement(s) best explain(s) these results? i. keystone species are critical to the diversity and stability of an ecosystem. ii. when a predator is removed, the prey of that predator will also decrease. iii. the disappearance of producers from an ecosystem can cause the number of predators to increase.
Answers
The first statement only, best explain(s) these results for the control plots the number and diversity of species was basically unchanged in keystone species are critical to the diversity and stability of an ecosystem.
An ecosystem refers to a community of living organisms that interact with each other and their physical environment in a specific geographic area. They are characterized by a complex web of relationships among different species, including producers, consumers, and decomposers.
Producers, such as plants, use energy from the sun to produce organic compounds that other organisms can use as food. Consumers, such as animals, feed on these producers or other consumers to obtain energy. Decomposers, such as bacteria and fungi, break down dead organic matter into its component parts, returning nutrients to the ecosystem. Ecosystems are not only home to a diverse array of species but also provide important services to human populations, such as clean water, air, and soil.
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PLEASE HELP ME THIS IS DUE TODAY
what are the reasons for each statement?
(A) a piece of wood is not a living thing
(B) all organisms need to respire
(C) a snake is not an invertebrate
(D) A bat is a vertebrate
(E) A Mushroom is not a plant
(F) A carrot is a plant
(G) All living things need to feed
(H) All bacteria aremicroscopic organisms
(I) A virus is not a living thing
Answers
Answer:
a) A piece of wood is not alive because, once it is not part of a tree, it cannot use the energy from sunlight to grow, produce seeds, and make more pieces of wood.
NEED HELP DUE TODAY PLZ HELP ME I AM STUCK PLZ PLZ PLZ HELP ME!!!!
Tay-sachs disease is an inherited genetic disorder in which cellular wastes are not properly cleared out from the cell. In turn, these wastes then accumulate to a toxic level within the cell, ultimately causing cell death.
Which labeled structure would be the most likely location in which Tay-sachs disease occurs?
Choose 1 answer:
(Choice A)
A
Structure A
(Choice B)
B
Structure B
(Choice C)
C
Structure C
(Choice D)
D
Structure D
Answers
Answer:
Its chromosome where it is located..
Chromosome is located in Nucleus soo the ans is A.
Explanation:
I am not sure though.
A. Structure A would be the most likely location in which Tay-sachs disease occurs.
What is Tay-sachs disease?
" Tay-Sachs disease is a rare genetic disorder passed from parents to child. It's caused by the absence of an enzyme that helps break down fatty substances."
How is Tay-sachs disease caused?
"Tay-sachs disease is caused by a defective gene on chromosome 15."
Where does Tay-sachs disease affect?
"Tay-Sachs disease (TSD) is a genetic condition that affects the nervous system."
Where is a chromosome located?
"A chromosome is located in the nucleus."
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The following diagram shows the branching tree diagram for some animals. (5 points)
A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.
Which two organisms share the least number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee
Answers
Answer:
I think the Answer is shark and chimpanzee Edit: Just rechecked my Answer this is the correct answer
Sorry for being late :(
Answer:
a
Explanation:
To test for starch, you would use the _____ test. If the solution is _____ , then there is no starch in the solution, whereas a _____ color indicates that starch is present.
Help fill the blanks^
Answers
Answer:
1. Iodine
2. Brown
3. Blue - black
Red blood cells need iron. They store iron and typically contain more iron than the fluid around them does. Which action would show the blood cells doing active transport?
O pushing iron out
O bringing iron in
O swelling
O shrinking
Answers
Answer:
B.
Explanation:
I hope this helps
Examine the model of the cell cycle, shown here. Which of these statements describes the events that occur in G1 and G2, but not
S during interphase?
A)
Cell growth and genome duplication occur in G1 and G2.
B)
DNA replication and cell division occur in G1 and G2
Cell growth and cell cycle checkpoints occur in G1 and G2
D
Nuclear division and cytoplasmic division occur in G1 and G2.
7)
Answers
In the cell cycle, cell growth and cell cycle checkpoints occur in G1 and G2 but not in S.
The interphase of the cell cycle has 3 main phases which occur in chronological order:
G1 phaseS phaseG2 phaseCell growth and development take place in G1 and a checkpoint exist to ensure that the required size is reached before the cell will irreversibly commit itself to division by moving to the S phase.
The S phase is characterized by DNA synthesis where the amount of DNA in the cell doubles by replication.
Protein synthesis takes place at G2 and another checkpoint ensures that the integrity of chromosomes is intact before moving to the mitotic phase.
Thus, cell growth and checkpoints have nothing to do with the S phase but G1 and G2 phases.
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