UNIT 6 Q21
Which of the following best explains how this model illustrates DNA replication of both strands as a replication fork moves?
I is synthesized continuously in the 5′ to 3′ direction, and III is synthesized in segments in the 5′ to 3′ direction.
Answers
This model illustrates the DNA replication of both strands as a replication fork moves by showing that I am synthesized continuously in the 5′ to 3′ direction, and III is synthesized in segments in the 5′ to 3′ direction.
How DNA replication is illustrated by the model?
DNA replication is the process by which a cell produces two identical copies of DNA from one original DNA molecule. DNA replication is carried out by enzymes that attach to a parent DNA strand and replicate it in both directions. The model illustrates DNA replication by showing the replication fork's movement. The replication fork is the point where the DNA double helix unwinds and new strands begin to form. The replication fork progresses in the 5' to 3' direction, which is the direction in which DNA synthesis occurs. The leading strand, which is replicated continuously by DNA polymerase I, is illustrated in the model.
The leading strand and lagging strand:
The leading strand is synthesized in the direction of the replication fork's movement, allowing DNA polymerase I to replicate it continuously. The lagging strand, on the other hand, is replicated in a segmented manner by DNA polymerase III. Because DNA synthesis must take place in the 5' to 3' direction, the lagging strand is synthesized in a direction that is opposite to the replication fork's movement. Segments are generated in this manner, which is then connected by DNA ligase to form a continuous strand.
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Related Questions
What happens when a ecosystem is in equilibrium
Answers
In equilibrium, an ecosystem has a balance between all organisms and their needed resources which make them to have ideal living conditions for organisms as well as climate for survival.
What is ecosystem equilibrium?Equilibrium, which is a comparatively steady state that maintains population sizes within a reasonable range, is referred to as a healthy ecosystem (not too many of a certain species alive or dead).
When an ecosystem is in equilibrium, all of the organisms and the resources they require are in balance. The environment also has the right climate for survival and excellent living conditions for creatures. The stability of the environment and the organisms is guaranteed by ecological balance. It fosters an environment that is favorable for organism growth and proliferation.
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the upper abdominal cavity and contents are supplied with blood by an aorta. what major branch of this structure divides into the artery that supplies the urinary bladder?
Answers
The aorta divides into two main branches: the descending thoracic aorta and the abdominal aorta. The abdominal aorta gives rise to several major branches, including the superior mesenteric artery, the inferior mesenteric artery, and the celiac artery.
The artery that supplies the urinary bladder is called the vesical artery, which arises from the anterior division of the internal iliac artery. The internal iliac artery is a branch of the common iliac artery, which is formed by the bifurcation of the abdominal aorta into the left and right common iliac arteries. Therefore, the major branch of the abdominal aorta that ultimately gives rise to the vesical artery is the common iliac artery.
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YO PLZ HELP MEH!!!!
3. _________ are vesicles that use oxygen to break down toxic substances in the cell.
a. Transport vesicles
b. Lysosomes
c. Peroxisomes
d. None of the above
Answers
True or False
1. T Iymphocytes are the effectors of specific humoral immune response.
2. The innate immune system is long lasting, highly specific, and is sustained by long term by memory T cells.
Answers
Answer:
A.true
B.false
Explanation:
A. lymphocytes or bcells produce antibodies involved in humoral immunity
B. innate immune system is sustained long by innate immune cells
Which of the following was first produced commercially using recombinant DNA technology? A. Human growth hormone.
B. Interleukins.
C. Hepatitis B vaccine.
D. Human insulin.
Answers
The first product to be produced commercially using recombinant DNA technology was human insulin gene into bacteria, which could then produce large amounts of insulin.
Correct option is, D. Human insulin.
Recombinant DNA technology involves the manipulation of DNA molecules to create new genetic combinations that can be used to produce specific proteins. In the 1970s, scientists developed the technology to insert the human insulin gene into bacteria, which could then produce large amounts of insulin. This was a breakthrough in diabetes treatment, as it allowed for the production of insulin on a large scale, making it more widely available and affordable for patients.
This technique was first used to create human insulin commercially in 1978. Eli Lilly and Company started producing it on a large scale in 1982, making it the first recombinant DNA product available in the market. The development of human insulin using this technology marked a significant breakthrough in medical research and biotechnology, as it allowed for the large-scale production of insulin that was identical to the naturally occurring hormone in the human body. This has greatly improved the treatment of diabetes and the quality of life for millions of people living with the condition.
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what is the difference between the substrate and product?
Answers
Answer:
The key difference between substrate and product is that substrate is the staring material of a chemical reaction whereas product is the compound obtained after the completion of the reaction. The terms substrate and product are used in spontaneous reactions and in reactions upon which an enzyme acts on as a catalyst.
Explanation:
Explanation:
substrate is a chemical reaction and product is compound obtained
Acid rain throughout the northeast United States has lowered the pH of many ponds and lakes. The lowered pH will eventually result in the death of many aquatic animals. Compare the map of the U.S. with the pH tolerance range for the organisms listed. Based on the tolerances seen here, which aquatic organisms are least likely to survive in the northeastern states? Responses A Only the clam will survive.Only the clam will survive. B All of the aquatic organisms will die.All of the aquatic organisms will die. C All the organisms with a lower limit of 5.0 will survive.All the organisms with a lower limit of 5.0 will survive. D All of the fish species will die; the others will survive.
Answers
Answer:
c. all the organisms with lower limit of 5 will survive
Tomas investigates coloured lights.
(a) Tomas shines red, green and blue light onto a green object.
He draws a diagram to help explain what happens.
-red light
green light
green object
blue light
(1) What colour does the object appear?
[1]
(11) Explain what happens at the surface of the green object.
[2]
Answers
NEED HELP ASAP !!! I ALSO HAVE MORE BIOLOGY QUESTIONS ON MY PROFILE PLS HELP
How does mRNA help in the differentiation of structures as an organism develops?
A. mRNA creates the amino acid chain that will eventually code for the specific protein that makes up a specific organ.
B.mRNA packages the proteins and takes them out of the cell
C.mRNA takes the DNA code to the ribosome so that the specific protein can be made that makes up a specific organ
D.mRNA is stored in the nucleus and carries the genetic code to make all of the specific structures of the body
Answers
Answer:
answer is part (C)
Explanation:
mRNA takes the DNA code to the ribosome so that the specific protein can be made that makes up a specific organ
mRNA takes the DNA code to the ribosome so that the specific protein can be made that makes up a specific organ. Thus the correct option is C.
What is mRNA?
Messenger RNA is referred to as a type of single-stranded RNA which involved in protein synthesis. mRNA is made from a DNA template during the process of transcription (formation of protein from DNA to RNA).
The role of mRNA is to carry protein information from the DNA in a cell’s nucleus to the cell’s cytoplasm (watery interior), where the protein-making machinery ribosome reads the mRNA sequence and translates each three-base codon into its corresponding amino acid in a growing protein chain.
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The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.1×10 −6
C/m 2
. (a) What is the magnitude of the electric field within the cell membrane? (b) Find the magnitude of the electric force that would be exerted on a potassium ion (K ∗
; charge =+e) placed inside the membrane. (a) Number Units (b) Number Units
Answers
(a) The magnitude of the electric field within the cell membrane is 7.1×10⁶ N/C.
(b) The magnitude of the electric force exerted on a potassium ion (K+) placed inside the membrane is 1.6×10⁻¹⁹ N.
(a) The magnitude of the electric field (E) within a capacitor can be determined using the formula E = σ/ε₀, where σ is the charge density and ε₀ is the permittivity of free space. Given a charge density of 7.1×10⁻⁶ C/m², and knowing that ε₀ = 8.85×10⁻¹² C²/Nm², we can calculate the electric field as follows:
E = (7.1×10⁻⁶ C/m²) / (8.85×10⁻¹² C²/Nm²) = 8.03×10⁵ N/C.
Therefore, the magnitude of the electric field within the cell membrane is 8.03×10⁵ N/C.
(b) The electric force (F) experienced by a charged particle inside the membrane can be calculated using the formula F = qE, where q is the charge of the particle and E is the electric field. For a potassium ion (K+) with a charge of +e, where e is the elementary charge (+1.6×10⁻¹⁹ C), and using the electric field calculated above (E = 8.03×10⁵ N/C), we can find the magnitude of the electric force:
F = (+1.6×10⁻¹⁹ C) × (8.03×10⁵ N/C) = 1.29×10⁻¹³ N.
Hence, the magnitude of the electric force exerted on a potassium ion (K+) placed inside the membrane is 1.29×10⁻¹³ N.
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why do we "flame" inoculating loops and needles? do you want to hear a sizzling sound when you place your loop or needle on the bacteria to be harvested? if you do hear that sound, what does it mean?
Answers
We flame inoculating loops and needles to sterilize them before use. This is important because bacteria and other microorganisms can contaminate the sample and give inaccurate results if not properly sterilized. The flame also helps to remove any residual bacteria or debris from the previous use of the instrument.
Hearing a sizzling sound when placing the loop or needle on the bacteria to be harvested is a good sign that the instrument is hot enough and ready for use. The sound is caused by the heat of the instrument instantly vaporizing any liquid that may be on the surface of the bacteria. It is important to let the instrument cool down for a few seconds before touching the bacteria to prevent any damage or killing of the bacteria.
Overall, flaming inoculating loops and needles is a simple and effective way to ensure accurate and reliable results in microbiological testing.
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Many types of plants produce fruit which is eaten by animals. The seeds of these plants are typically undigestible. Which of the following is an advantage for plants having undigestible seeds? It allows seeds to reside in the gut until conditions are appropriate for germination. It ensures that flowers of these plants will be pollinated. It allows the seeds to be dispersed into other areas. It provides a source of nutrients for the germinating seed.
Answers
The advantage for plants having undigestible seeds is that it allows seeds to reside in the gut until conditions are appropriate for germination.
Fruits are a source of nutrition for animals that consume them, and they are also a means of seed distribution for plants that produce them. Many types of plants generate fruit that is consumed by animals; nevertheless, the seeds of such plants are usually indigestible. As a result, the seeds can be dispersed into new areas by animals that eat the fruit.
However, having undigestible seeds provides a distinct benefit to plants: it allows seeds to reside in the gut until conditions are appropriate for germination, which aids in seed growth and germination.
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state two variables that were controlled in this investigation
Answers
Answer:
Explanation:
WHAT ON EARTH IS THE QUESTION
Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual
Answers
Answer:
reproduction
Explanation:
Answer:
Reproduction
Explanation:
100% on test
Herbivores have teeth that are....A. sharp for piercing.B. dull for grinding.C. both sharp and dull.
Answers
Herbivores are adapted to eat plants. This means, for ecample that their teeth are adapted to grind the tough plant ma
the composition of a polynomial function and another polynomial function will be a ___ function.
Answers
The composition of a polynomial function and another polynomial function will be a composite function.
A function is composed in mathematics when two functions, f and g, are used to create a new function, h, such that h(x) = g{f(x)}. In this instance, the function of x is being applied to the function of g. So, in essence, a function is an application of the result of another function. These functions are primarily polynomial functions. Thus, two polynomial functions combine to give rise to composite function.
Expressions with polynomial functions can include constants, variables with various degrees, coefficients, and positive exponents. Below are a few illustrations of polynomial functions. The simplest, most widely applied, and most significant mathematical function is a polynomial. With certain restrictions, these functions represent algebraic expressions. Example of a polynomial function:
f(x) = 3\(x^{2}\) - 5
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Examine the data below. Determine the number of extinct species in each bird group. Then use that data
to calculate the percentage of that bird group that has gone extinct.
Species Known
Current Species
Number Extinct
Bird Group
Seabirds
Percentage Extinct
22
22
Waterfowl
11
3
Honeyeaters
6
2
Honeycreepers
45
20
Rails
11
2
Ibises
2
0
Flycatchers
1
1
Thrushes
6
3
Stilts
1
1
Iiro this info
ntion for
the bi
Number of Fytinot
Answers
Environmental factors can influence the way genes are ________________.
Answers
Answer:
expressed
Explanation:
Factors in the environment affects how your genes are expressed and shown.
In the scientific process, what is the correct sequence for the following steps: A: Recognizing a problem/Asking a question; B) Testing a hypothesis; C Drawing inferences
Group of answer choices
ABC
ACB
CAB
BCA
Answers
Answer:
ABC
Explanation:
Ask questions, make a hypothesis, test the hypothesis, analyze results, draw conclusions, communicate results.
A gorilla has 40 chromosomes. How many chromosomes will each daughter cell have after the cell undergoes a mitotic division?
A)20
B)46
C)40
D) 80
Answers
Cell differentiation depends on changes in _ expression.
Answers
Cell differentiation depends on changes in gene expression.
What are the roles of gene in cell differentiation?Genes are the basic units of heredity and they contain the instructions for making proteins. When a cell differentiates, it turns on or off certain genes, which causes it to produce different proteins. These different proteins then give the cell its specialized function.
For example, when a skin cell differentiates, it turns on genes that code for proteins that make up the skin's outer layer. These proteins give the skin cell its ability to protect the body from the environment.
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Cells first digest nucleic acids into nucleotides, then use those nucleotides to produce DNA and RNA inside the cell.
Which data would best support this argument?
Question 3 options:
A decrease in the amount of DNA and RNA produced by the cell.
An increase in the amount of DNA and RNA produced by the cell after it has taken in nucleotides broken down from raw fruits and vegetables.
A decrease in the amount of DNA and RNA in a cell after it has broken down the nucleotides inside the cell to use for energy.
An increase in the amount of ATP produced by the cell after it takes in nucleotides for energy.
Answers
The data that best support the agreement is as follows: an increase in the amount of DNA and RNA produced by the cell after it has taken in nucleotides broken down from raw fruits and vegetables (option B).
What are nucleic acids?Nucleic acids are chain-like biological macromolecules consisting of multiple repeat units of phosphate, sugar and purine and pyrimidine bases (nitrogenous bases).
Nucleic acids are the DNA and RNA found in the nucleus of living cells.
According to this question, cells first digest nucleic acids into nucleotides, then use those nucleotides to produce DNA and RNA inside the cell.
This suggests that the data that best supports the aforementioned argument is that an increase in the amount of DNA and RNA produced by the cell after it has taken in nucleotides broken down from raw fruits and vegetables.
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Which of the following is not an effector?
A. Skin B. Tongue C. Inner ear D. Diaphragm
Answers
Answer:
It should be C. inner ear
Explanation:
according to the web
identify the greenhouse gases that make the greenhouse effect possible. check all that apply.
Answers
Carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and ozone in the lower atmosphere are the principal greenhouse gases whose concentrations are rising.
Human activities have increased the atmospheric carbon dioxide content by more than 50% since the start of the Industrial Revolution, from 280 ppm in 1750 to 421 ppm in 2022. (about 1750) in greenhouse gases. The last time the atmospheric carbon dioxide level was this high was over 3 million years ago. Despite the fact that the numerous natural carbon sinks in the carbon cycle already absorb more than half of the emissions, this rise has nonetheless taken place.
The complete question is:
Identify the greenhouse gases that make the greenhouse effect possible. check all that apply.
a) Carbon dioxide
b) methane
c) nitrous oxide
d) hydrochlorofluorocarbons (HCFCs)
e) hydrofluorocarbons (HFCs)
f) All
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Which statement best represents how structure relates to function?
A.Many tropical birds can be taught to speak.
B. Great white sharks have sharp serrated teeth for tearing into their prey.
C. Some insects live longer than others.
D. A horse's mane is often black.
Answers
Answer:
The correct Answer is B. Great white sharks have sharp serrated teeth for tearing into their prey.
Explanation:
Answer:
the answer is option A and that is the correct answer
Which of the following is not a cause of a tsunami?
Question 5 options:
Earthquake
Volcanoes
The moon
Landslides
Answers
The moon moon moon moon
Explanation:
moon
A Tsunami is a huge tide or a series of killer waves that have the ability to move a large quantity of water.
The Tsunamis are a product of earthquakes, landslides and volcanic eruptions as they displace a large amount of water from the land surface. Being seismic waves these Tsunamis are able to destroy property and cause havoc on life forms. The moon comparatively is located at a distance of 384,400 km and thus causes high and low tides. The moon does not possess a large gravity potential to cause a Tsunami on earth.Hence the correct option is C.
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What molecules can diffuse through the cell membrane passively?
Answers
Answer:
Oxygen molecules
Explanation:
Determination of Genus and species from fossils alone is always approximate. The technical term for a fossil Genus, agreed upon through scientific consensus, is Group of answer choices Variant. Infraorder. Subspecies. Protospecies. Paleogenus.
Answers
Determination of Genus and species from fossils alone is always approximate.The technical term for a fossil Genus, agreed upon through scientific consensus, is paleogenus.
what is paleologenus?
Paleo is a term for old fossil. The scientific term for a fossil genus is paleogenus .Paleontology is the field of study that deals with fossils. Paleontologist is the person who study the fossil.
A taxonomic category is not called a variant.
The taxonomic category known as a "infraorder" comes after a suborder and is not used to describe fossil genera.
Subspecies are taxonomic groups that fall below species; they are also not used to describe extinct genera.
The term "protospecies" refers to early species.
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That nature contributes to the supply of clean water is an
example of:
Choose one option:
Sustainability
Ecosystem services
Biomimicry
Industrial symbiosis
Answers
Ecosystem services is an example of how nature contributes to the supply of clean water. Ecosystem services are benefits that people obtain from ecosystems. They are distinguished into four categories: provisioning, regulating, cultural, and supporting services.
Ecosystem services include the provision of clean air and water, the pollination of crops, the mitigation of natural disasters, and the provision of recreational opportunities. Nature provides a variety of ecosystem services that are essential to human well-being. The supply of clean water is an example of ecosystem services. The water we drink comes from rivers, lakes, and underground aquifers that are replenished by rain and snowmelt.
These freshwater ecosystems not only provide us with water but also with food, fiber, and recreation opportunities. That nature contributes to the supply of clean water is an example of ecosystem services. Ecosystem services are benefits that people obtain from ecosystems.
The supply of clean water is one such service provided by nature, and it is essential for human well-being. The water we drink comes from rivers, lakes, and underground aquifers that are replenished by rain and snowmelt. These freshwater ecosystems not only provide us with water but also with food, fiber, and recreation opportunities.
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Acid precipitation can dissolve aluminum from soil. As aluminum is dissolved, it can flow into lakes and contaminate the water. High concentrations of aluminum in
lakes is fatal to many forms of aquatic life. This scenario provides evidence for which of theseconcepts?
A. Environmental change always has a negative impact on organisms.
B. Acid rain is the most important environmental problem to address.
C. Acid rain is the leading cause of death to fish in lakes.
D. Environmental change can impact the quality of life for living organisms.
Answers
The scenario described provides evidence for option D: Environmental change can impact the quality of life for living organisms.
The passage explains how acid precipitation, commonly known as acid rain, can dissolve aluminum from soil. This dissolved aluminum can then flow into lakes, resulting in contamination of the water.
High concentrations of aluminum in lakes can be fatal to many forms of aquatic life. This evidence supports the concept that environmental change can have a detrimental impact on living organisms.
Option A is incorrect because the passage does not suggest that environmental change always has a negative impact on organisms. While the scenario highlights a negative consequence of acid rain on aquatic life, it does not generalize this impact to all environmental changes.
Option B is also incorrect because the passage does not claim that acid rain is the most important environmental problem to address. It solely focuses on the specific issue of aluminum contamination in lakes due to acid rain.
Option C is incorrect because the passage does not state that acid rain is the leading cause of death to fish in lakes. It highlights the detrimental effect of high aluminum concentrations, but it does not compare it to other potential causes of fish death in lakes.
Therefore, the most appropriate concept supported by the scenario is option D, which acknowledges that environmental change can impact the quality of life for living organisms based on the example of aluminum contamination in lakes due to acid precipitation.
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