molecules that cut dna at specific sequences are known as
Answers
Answer:
Restriction enzyme, also called restriction endonuclease, a protein produced by bacteria that cleaves DNA at specific sites along the molecule
Explanation:
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Related Questions
a complex tone composed of 330hz, 660hz, and 1320hz tones is presented. which part of the basilar membrane will respond?
Answers
The three different areas in the basilar membrane will respond the characteristic component of each sound frequency.
The frequency of the sound impinging on the ear is the same at every place along the basilar membrane that is set in motion, yet different frequency sounds induce a peak in the wave at various locations along the basilar membrane. As a result, low frequencies move almost the entire basilar membrane, while high frequencies only move a small portion of the membrane close to the stapes. The membrane's peak displacement, however, is close to the apex.
The frequency of the sound wave that travels through the fluid of the cochlea causes different parts of the basilar membrane to vibrate at different rates. These factors explain why the fluid-filled cochlea can distinguish between various wave frequencies (or pitches) at various membrane locations. The basilar membrane flexes back and forth in a wave-like pattern when the sound waves in the cochlear fluid come into contact with it. The tectorial membrane is located above the basilar membrane.
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6. Two functions of bones are to protect body structures and to
A) serve as storage sites for glycogen B) synthesize the vitamins needed for clotting
C) provide sites for ATP production D) act as levers during body movements
Answers
Answer:
D) act as levers during body movements
Explanation:
A train traveled at 350 km in 2.5 hours. What was the average speed of the train?
Answers
Answer:
140 km per hour.
Explanation:
350 divided by 2.5= 140
The average speed of the train was 140 kilometers per hour.
Speed is a unit used to describe how fast something is moving with respect to another object. Due to its scalar nature, it has only magnitude and no direction. By dividing the distance traveled by an object by the time required to cover that distance, one can calculate its speed.
The formula for calculating speed is as follows:
Speed = Distance / Time
In the International System of Units (SI), the meter per second (m/s) is the accepted unit for measuring speed. Nevertheless, other common units for speed include kilometers per hour (km/h) and miles per hour (mph), depending on the situation and location.
We can use the following calculation to determine the typical speed of a train:
Average speed = Distance traveled / Time taken
In this example, the train covered this distance of 350 km in 2.5 hours.
Average speed = 350 km / 2.5 hours
Average speed = 140 km/h
Therefore, the average speed of the train was 140 kilometers per hour.
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in glycogen synthesis, the intermediate between glucose-1-phosphate and glycogen is:
Answers
In glycogen synthesis, the intermediate between glucose-1-phosphate and glycogen is UDP-glucose.
UDP-glucose is an important intermediate in glycogen synthesis. Glucose-1-phosphate is converted to UDP-glucose by the enzyme UDP-glucose pyrophosphorylase, which requires UTP (uridine triphosphate) as a co-substrate.
UDP-glucose is then added to a growing glycogen chain by the enzyme glycogen synthase. This process continues until the glycogen chain reaches a length of about 8-10 glucose units, at which point branching occurs.
Branching is catalyzed by the enzyme glycogen branching enzyme, which transfers a segment of the glycogen chain to another part of the same chain, forming an alpha-1,6 glycosidic bond. The resulting branched structure allows for more efficient storage and mobilization of glucose in the body.
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13. Researchers are studying lichens growing on trees in a forest ecosystem. At the beginning of the study, the researchers identified twelve
lichen species in the forest. Later, a forest fire happened in the study area. The researchers returned to the area and found only six lichen
species.
Which inference is best supported from the researchers' observations?
Answers
in the chesapeake bay and other bodies of water, what is a result of phytoplankton population increases? in the chesapeake bay and other bodies of water, what is a result of phytoplankton population increases? increased fish populations as a result of an overabundance of primary productivity waterways becoming choked off as a result of an excess of plant growth dead zones as the result of hypoxia through the decomposition of dead phytoplankton by bacteria an increase in the ph of open water
Answers
When phytoplankton populations increase in bodies of water such as the Chesapeake Bay, it can lead to the formation of dead zones due to the process of hypoxia, option C is correct.
Phytoplankton are microscopic algae that undergo photosynthesis, using sunlight and nutrients like nitrogen and phosphorus to grow and reproduce rapidly. As their numbers increase, they create an overabundance of organic matter in the water. When the phytoplankton die, they sink to the bottom and are decomposed by bacteria.
This decomposition process consumes oxygen from the water, leading to hypoxia or low oxygen levels. As a result, fish and other marine organisms in these areas may suffocate and die, resulting in dead zones where life cannot be sustained. The excess nutrient input, primarily from human activities, contributes to this eutrophication process and exacerbates the formation of dead zones, option A is correct.
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The correct question is:
In the Chesapeake Bay and other bodies of water, what is the result of phytoplankton population increases?
A. increased fish populations as a result of an overabundance of primary productivity
B. waterways becoming choked off as a result of an excess of plant growth
C. dead zones as the result of hypoxia through the decomposition of dead phytoplankton by bacteria
D. an increase in the ph of open water
Explain why mice in urban areas can digest certain food better than rats in rural areas. Using the terms
"genes" and "allele frequency" in your explanation provide data of this phenomenon.
Answers
Finding the corresponding human illness genes using rat disease gene identification is helpful, but it also aids in understanding the mechanisms causing pathological defects.
What is the random alteration in allele frequencies caused by genetic drift?Genetic drift is the term used to describe the haphazard changes in gene variant frequencies within a population. Genetic drift occurs when the frequency of different alleles, or variable forms of a gene, fluctuates over time through chance. Changes in allele frequencies are used to measure these differences in allele presence.
Who made genetic drift public?In the future, Sewall Wright, a pioneer in population genetics, invented the phrase "genetic drift" and the corrected mathematical treatment.
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Mutations are changes in the DNA of an organism. Changes caused by mutations can affect the structure and function of different
proteins in the body. Three changes caused by mutations are described below:
• Having two different-colored eyes is caused by a mutation that results in increased or decreased pigmentation in one of the
eyes. While this mutation affects the coloration of the eye, it does not affect how the eye functions.
• Cystic fibrosis is caused by the mutation of a protein in the lungs that causes a sticky mucus to build up in the lung tissue. This
build up of mucus can make it difficult for a person to breathe.
• Bone density can be affected by a mutation. This mutation can cause very dense bones that are almost unbreakable.
What is true about mutations in organism?
A. Changes caused by mutations always have negative effects on an organism.
B. Changes caused by mutations can be harmful, beneficial, or neutral to an organism.
C. Changes caused by mutations always have positive effects on an organism.
D. Changes caused by mutations never have an effect on an organism's cells.
?
Answers
Changes caused by mutations can be harmful, beneficial, or neutral to an organism.
The outcome of a mutation, or alteration in the DNA structure. Mutations can have a wide range of impacts, from being advantageous to having no effect to having fatal consequences, and everything in between.The majority of mutations on the organism they occur in have neither good nor bad effects. Neutral mutations are the name given to these mutations.Some mutations benefit the organism in which they take place. They are known as advantageous mutations. They result in novel protein variants that aid organisms in adjusting to environmental changes.Any arbitrary alteration to a gene's DNA is likely to produce a protein that performs improperly or not at all. Such alterations are probably detrimental.Therefore, option B. is correct.
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Draw the simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right. Show ali lone pairs. If you need to expand part of the structure to show some lone pairs, expand it by drawing in all atoms and bond lines.
Answers
The simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right are shown below. These lone pairs are important for the bonding interactions between the oxygen atoms and the nitrogen atoms in the structure.
The simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right is shown below:
[Structure on the left]
[Structure on the right]
To convert the structure on the left into the structure on the right, the atoms would need to be rearranged to form the tetrameric structure with a linear arrangement of the amino acid chains.
This could be achieved by pulling out one of the amino acid chains from the structure on the left and attaching it to one of the remaining chains. The remaining three chains would then be arranged in a linear fashion, with each chain containing one amino acid chain from the original structure.
In the structure on the right, all of the lone pairs on the oxygen atoms are shown. These lone pairs are indicated by the curved arrows pointing outwards from the oxygen atoms.
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a food web is more realistic than a food chain for showing the feeding relationships in ecosystems because
Answers
A food web is more realistic than a food chain for showing the feeding relationships in ecosystems because it captures the complexity and interconnectedness of nature's interactions. Therefore option A is correct.
Unlike a linear food chain that depicts a single path of energy transfer, a food web includes multiple interconnected chains, illustrating how different species interact and depend on one another.
It considers the diverse range of organisms involved, including micro-organisms, and highlights the interdependence of various trophic levels.
Producers support numerous consumers, and consumers have multiple predators, reflecting the intricate balance that sustains ecological communities.
Thus, a food web provides a comprehensive representation of the dynamic relationships in ecosystems, making it a more accurate and informative model.
Therefore option A is correct.
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Your question is incomplete, but most probably your full question was,
A food web is more realistic than a food chain for showing the feeding relationships in ecosystems because:
A. It compares the number of consumers to the number of micro-organisms in an ecosystem.
B. Food chains use only a small sampling of organisms.
C. A food web explains why there are more producers than consumers.
D. Producers are usually eaten by many different consumers and most consumers are eaten by more than one predator.
Vesicles that serve to break down cellular debris
Answers
Answer:
Lysosomes are vesicles that are formed by the golgi apparatus. They contain powerful enzymes that could break down (digest) the cell products, waste materials , and cellular debris and then force them out of the cel. They also digest invading organisms as bacteria.
If a molecule has four hybrid sp3 orbitals, it can be concluded that the molecule has a
trigonal planar molecular geometry.
trigonal planar electron domain geometry.
tetrahedral molecular geometry.
tetrahedral electron domain geometry.
Answers
If a molecule has four hybrid sp³ orbitals, it can be concluded that the molecule has a trigonal planar molecular geometry (option A).
What is molecular geometry?Molecular geometry is the specific 3-dimensional arrangement of bonded atoms.
Different compounds have different molecular geometries or spatial arrangements. The molecular geometries of atoms in compounds depend on the number of atoms or bonds attached to the central atom and lone pairs of electrons, if any, around the central atom.
Each atom and lone pair of electrons around the central atom count as one group. A trigonal planar compound has a central atom attached to three atoms arranged in a triangular shape around the central atom.
All four atoms of the trigonal planar compound lie flat on a plane. Note that there are no lone pairs of electrons around the central atom.
Therefore, option A correctly describes a molecule with four hybrid sp³ orbitals.
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Information about the four organisms can be found on the Internet. Use credible websites to find answers to the questions you developed in part A. Based on this data, draw your own dichotomous key.
Answers
Making a Dichotomous Key
Step 1: Make a list of the attributes.
Step 2: Arrange the features in the correct order.
Step 3: Divide the specimens.
Step 4: Cut the specimen even more into smaller piece
Step 5: Draw a dichotomous key diagram as the fifth step.
Step 6: Put it to the test
What exactly is a dichotomous key?A dichotomous key is a useful scientific tool for identifying various organisms based on their visible characteristics. Dichotomous keys are made up of a succession of statements, each with two options, that guide users to the proper identification.
What is an example of a dichotomous key?In tree identification, for example, a dichotomous key can question if the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles
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help I need help thanks
Answers
Answer:
1. Temporal
2. Ecological
3. Mechanical
4. Geographic
Explanation:
Which of the following best describes the creator and the message of this campaign ad?
The image shows a man in uniform saluting the American flag. The title at the top of the image reads, A vote for Mike Harrington is a vote for a stronger America. At the bottom of the image, the text reads, Paid for by citizens for the re-election of Senator Mike Harrington.
Public Domain
An interest group is using symbolism to suggest that their candidate supports American military power.
The government is using propaganda to encourage citizens to join the military.
A politician is using symbolism to state that his competitors are not true Americans.
A private company is using propaganda to link its product to patriotism.
Answers
Answer:I dont remmber my answer but i think its A or D
Explanation:
Answer:
the answer is A
Explanation:
Remember what you learned about the South American plate. What
is the relative motion between this plate and the plates on the east
and west sides?
Answers
The relative motion between the South American and Nazca plates is generally characterized by subduction of the Nazca plate beneath the South American plate along the Peru-Chile Trench, which has caused a number of large earthquakes and volcanic eruptions in the region.
What is an earthquake?An earthquake is a sudden and violent shaking of the ground caused by the movement of tectonic plates in the Earth's crust.
A volcanic eruption is an event in which molten rock, ash, and gas are expelled from a volcano, typically accompanied by a range of explosive and non-explosive processes.
The South American plate is bordered by the Nazca plate to the west and the African and Antarctic plates to the east.
The relative motion between the South American and Nazca plates is generally characterized by subduction of the Nazca plate beneath the South American plate along the Peru-Chile Trench, which has caused a number of large earthquakes and volcanic eruptions in the region.
The relative motion between the South American and African/Antarctic plates is generally characterized by divergence, with the Mid-Atlantic Ridge marking the boundary between these plates.
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Create 3
questions that
could be
answered using
the data shown in
the bar graph. Be
sure to number
your questions:
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Answer:
1.what are the differences in each bar graph
2.what does each bar graph represent
3.in what time period did the Forrest change
b) The diagram below shows part of the inner surface of this organ.
i) Name the structures labelled X on the diagram.
Answers
Explanation:
where is that diagram labeled x
What is one of the earliest signs of nephron damage?
A. burning upon urination
B. extreme pain
C. albumin or formed elements in the urine
D. the absence of urination
E. edema
Answers
One of the earliest signs of nephron damage is the presence of albumin or formed elements in the urine, which is indicated by the option C.
Normally, the nephrons in the kidneys filter waste products and excess substances from the blood while retaining essential molecules.
However, when the nephrons are damaged, their filtration function becomes compromised, leading to the leakage of important substances like albumin into the urine.
This condition is known as proteinuria and is an early indication of nephron dysfunction.
Other signs and symptoms, such as burning upon urination, extreme pain, the absence of urination, or edema, may occur later or in more advanced stages of nephron damage.
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if you consume one molecule of pyruvate , how many ATP molecules you are going to produce ?
1 NADH -> 3 ATP
1 FADH2 -> 2 ATP
Answers
A single molecule of pyruvate will generate 15 ATP molecules.
Pyruvate is an important chemical constituent according to biochemical science. It is the molecule that is produced from glycolysis, a process by which energy is derived from glucose. The carboxylate group of pyruvate is removed as carbon dioxide. The synthesized acetyl group is stimulated through its association with Coenzyme-A, thus, producing Acetyl Coenzyme-A.
The TCA cycle generates 15 ATP molecules through oxidation of Acetyl Co-A. Through oxidative decarboxylation as well as Krebs cycle, a single molecule of pyruvate (containing 3 Carbon atoms) gives rise to 4 molecules of NADH, a single molecule of FADH2 as well as one molecule of ATP.
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Select the statement that is true.(1 point)
Thymine is only present in DNA, while cytosine is only present in RNA.
Thymine is only present in DNA, while cytosine is only present in RNA.
Translation copies DNA to mRNA, while transcription converts mRNA into proteins.
Translation copies DNA to mRNA, while transcription converts mRNA into proteins.
DNA has the sugar deoxyribose, while RNA has the sugar ribose.
DNA has the sugar deoxyribose, while RNA has the sugar ribose.
DNA and RNA are both double-stranded.
Answers
Answer:
1. false
2. false
3. true
4. false
Answer:
1. false
2. false
3. true
4. false
Explanation:
Coming from words that mean sugar coat, the layer of carbohydrates coating a cell membrane is called the.
Answers
Glycocalyx is referred to the the layer of carbohydrates coating a cell membrane.
What is Cell membrane?This a layer of the cell which separates the external environment from the internal structures in cells. It helps to protect cells from external and environmental factors.
Cell membrane is made up of compounds such as carbohydrate in which glycocalyx is responsible for its coating.
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Answer fast pleAse i really need the help
Answers
Answer:
Due to different reproduction methods.
Explanation:
Organisms from eubacteria, plantae and animal kingdom are used different reproductive strategies which leads to genetic diversity. Bacteria use asexual reproduction which produces identical offspring while on the other hand, plants and animals use sexual reproduction that produces offspring that is different from plants which leads to variation in the organism so that's why we can say that different reproductive strategies is responsible for genetic diversity.
What might happen if you were to have damage to your hypothalamus?
a) Any adrenaline rush would be communicated to the wrong area.
b) Your metabolic rate might climb too high.
c) You could have difficulty producing adrenaline.
d) You would continue to eat, never receiving a signal that you are full.
Answers
Examine figure 2. How can MI be used as a predictor of survivability for
mast cell cancer? Be detailed in your explanation, citing evidence from the
data shown in Figure 1 and Figure 2.
Answers
It is to be noted that typically, a lower mitotic index is better. Rarer dividing cells mean a less aggressive cancer. The preferred number to hope for is a mitotic index of 5 or less.
What is a Mitotic Index?The mitotic index is defined as the ratio of the number of mitotic cells in a population to the total number of cells.
The mitotic index (the percentage of cells in mitosis at any one time) measures both the capacity and the pace of cell division. It is used to detect growth hotspots inside tissue and which cell types are proliferating.
It is to be noted that the lengths of the cell cycle and mitosis vary amongst cell types. A higher mitotic index suggests that more cells are dividing. The mitotic index in cancer cells may be higher than in normal tissue development or cellular healing at an injured site.
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I need help with one paragraph.
Answers
Answer:
paano nyo po ginawang dalawa po yung picture?
Explanation:
nakakonek ka po sa U.S.A dun po kayo sa Philippines po punta ka settings mo tapos pindutin mo yung change hanapin mo yung Philippines tapos pindutin mo,gumawa kana ng isang account mo,, Virtuoso na ako don,,,dadami followers mo,marami din sasagot sa question mo,marami din mamigay ng points
10. Which arrow or arrows represent reactions that demonstrate the conservation of mass and energy? Explain your answer.
Answers
carbon cycle.
In this cycle, carbon is cycled between the biotic and abiotic component of the biome. In any biogeochemical cycle, mas and energy are always conserved.
Thus, all the arrows are required to demonstrate the conservation of mass and energy.
2. Mars is the closest planet to Earth. Both Mars and Earth have different orbital speeds around the sun,
but when Mars is closest to Earth it is still 55,000,000 km away. How far is this in light-years?
Answers
Answer:
5.813504587e-6 that is what I found
kate thought it was interesting that, after the release of a mature oocyte from the ovary, the follicle it was released from took on a new role. what happens to the follicle? select all that apply.
a. The follicle turns into the corpus luteum.
b. The follicle signals the uterus to shed the functional layer c. The follicle becomes an endocrine structure that functions during the teal phase of the ovarian cycle. d. The follide transports the oocyte to the uterus.
e. The follicle starts overproducing a new oocyte.
f. The follicle becomes a structure that produces estrogen
Answers
After the release of a mature oocyte from the ovary, the follicle undergoes changes and functions in different ways. The follicle turns into the corpus luteum, becomes an endocrine structure that functions during the luteal phase of the ovarian cycle, and produces estrogen.
Answer choices a, c, and f are correct. After ovulation, the follicle transforms into the corpus luteum, a temporary endocrine structure. The corpus luteum secretes hormones, particularly progesterone, during the luteal phase of the ovarian cycle. It plays a vital role in preparing the uterus for potential implantation and maintaining pregnancy if fertilization occurs. The corpus luteum also produces estrogen, along with progesterone. These hormones help regulate the menstrual cycle and prepare the endometrium for potential implantation of a fertilized egg.
Answer choices b, d, and e are incorrect. The follicle does not signal the uterus to shed the functional layer (b), transport the oocyte to the uterus (d), or overproduce a new oocyte (e). Instead, its role shifts to the corpus luteum, which is responsible for the changes mentioned above.
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Bacteria and archaea together make up the most widespread group of
organisms on Earth, the
a. eukaryotes.
b. prokaryotes.
c. viruses.
d. pathogens.
Answers
The correct answer is b. prokaryotes.
Eukaryotic v.s. ProkaryoticYou can recall that there are two major different types of cells: eukaryotic cells and prokaryotic cells. Eukaryotic cells have a nucleus, and prokaryotic cells do not have a nucleus.
Bacteria, such as the streptococcus bacteria (which causes infections like strep throat and rheumatic fever), do not have a nucleus. This sets them apart from other types of cells. For instance, white blood cells (WBCs) do have a nucleus, but red blood cells do not.
Since bacteria are prokaryotic (do not have a nucleus), we cannot categorize them as eukaryotic. This renders option A incorrect.
Bacteria v.s. VirusesBacteria and viruses are also contrasting. Bacteria cause infections like pneumonia and skin infections (such as cellulitis), but viruses are in charge of most upper respiratory infections (URIs), like the common cold or the Novel Coronavirus.
As such, bacteria cannot be categorized under the viruses category. This means that option C cannot be correct.
Are archaea pathogenic?Pathogens are different biological microorganisms that can cause infections. Both viruses and bacteria fall under this category. However, archaea are not known to create any type of disease in humans and are therefore marked as non-pathogenic.
As such, bacteria and archaea cannot make up a group of pathogenic organisms, so this means that option D is also incorrect.
The final answer choice that is correct is b. prokaryotes.