Answer:
The oceanic plate sinks below the continental plate
Explanation:
When there's a collision between an oceanic and continental tectonic plates, we have a convergent plate boundary. The continental plate is less dense, it is higher, and it is thicker, while the oceanic is denser, lower positioned, and less thick. This results in the oceanic plate to sink below the continental plate, in a process known as subduction. As the oceanic plate moves below the continental plate the area around the boundary is lifting up, resulting in the formation of mountain chains. There's also a great deal of volcanic activity along the boundary, often resulting in the formation of volcanic island chains, and the earthquakes are also very common as there's lot of adjustment going on in the crust.
Answer:
The oceanic plate sinks below the continental plate
Explanation:
All organisms need energy to live ATP is the fuel that powers all the activities of cells. Which statement best describes how ferns, people, and flatworms obtain energy?
Ferns and flatworms absorb food from their surroundings, while people must digest food found in their surroundings.
Ferns produce glucose that can be broken down by cellular respiration, while flatworms and people digest foods containing glucose for use in cellular respiration.
Producers such as ferns do not require a source of energy, while flatworms and humans must consume food for energy.
Ferns produce ATP during photosynthesis, while flatworms and people produce ATP during digestion.
Answer:
Ferns produce glucose that can be broken down by cellular respiration, while flatworms and people digest foods containing glucose for use in cellular respiration.
Explanation:
Ferns, humans & flatworms all require cellular respiration to live. This energy-productive process occurs in the cell cytoplasm and mitochondria. However, for cellular respiration to occur, it has to work on an energy-rich substrate. In cells, this substrate is usually glucose. Ferns are autotrophs hence can make glucose by photosynthesis because they have chlorophyll molecules. However, flatworm and humans are heterotrophs meaning they have to consume other organic compounds to get this glucose.
Answer:
i believe that the answer to your question would be (Ferns produce glucose that can be broken down by cellular respiration, while flatworms and people digest foods containing glucose for use in cellular respiration.)
Let me know if i got it right :)
How many pairs of chromosomes are there in each human body cell?
Answer:
23 pairs
Explanation:
There are 23 pairs of chromosomes in each human body cell.
Use the drop-down menus to complete the statements.
Meiosis involves cell divisions.
Answer:
Meiosis involves two cell divisions
Explanation:
Mitosis and meiosis are two kinds of cell divisions and one of the main differences between the two is that meiosis goes through 2 nuclear divisions.
Meiosis has Meiosis I and Meiosis II division. In Meiosis I, the number of chromosomes in the daughter cells are only half of the parent cells. This is why it is called a reduction division, because the chromosomes will be reduced by half. In Meiosis II, the daughter cells will have the same number of chromosomes as the parent cells, which in this case is the daughter cells of meiosis I.
Which way do the nitrogenous bases in DNA pair up? A. A and G; T and C B. A and C; T and G C. A and T; G and C D. A and A; T and T; G and G; C and C
Some types of lichens have been used to make ______
A. Poison-tipped arrows
B. Natural dyes
C. Certain foods
D. All of the above
Answer:
D. All of the above
Explanation:
Some types of lichens have been used to make All of the above.
Answer:
(D). All of the above.
Explanation:
Lichens represent symbiotic association between algae (that provide food for fungi) and fungi (that provide protection and shelter to the algae).
Some lichens can be used to make poisons due to their high toxic content. For example, Letharia (wolf lichen) is used to kill wolves.
Some Lichens are used to produce natural dye. For example, cudbear lichen is used to make red dye.
Some lichens, such as Iceland moos and reindeer lichens can be also used as a food source in various regions.
Thus, the correct answer is option (D).
The five-carbon sugar in RNA is called
Answer:
Ribose sugar
Explanation:
This sugar is differentiated from deoxyribose sugar of DNA by the 2’ carbon of the carbon ring. This carbon in ribose has a hydroxyl group while that of deoxyribose sugar does not. When this ribose sugar is bonded with a nitrogenous base on the 1’ carbon and a phosphate on the 5' carbon, it becomes a ribonucleoside that is the basic unit of RNA.
The five-carbon sugar in RNA is called ribose. This sugar differs from the deoxyribose found in DNA by having a hydroxyl group on the 2' carbon. The ribose sugar, along with a nitrogenous base, contributes to the structure of RNA nucleotides which, unlike DNA, are single-stranded.
Explanation:The five-carbon sugar in RNA is called ribose. The ribose sugar in RNA differs from the deoxyribose sugar in DNA in that ribose contains a hydroxyl group on the 2' carbon. Furthermore, the carbon atoms of this sugar molecule in RNA are numbered as 1', 2', 3', 4', and 5' (with 1' being read as 'one prime').
The phosphate component of RNA connects to the 5' carbon of the sugar via the formation of an ester linkage. This linkage involves an ester, which is an acid + an alcohol composed of the phosphoric acid and the 5'-OH group. The 2' carbon of ribose also contains a hydroxyl group. Moreover, the nitrogenous base in a nucleotide is attached to the 1' carbon of the sugar.
Structure of Ribonucleotides in RNARNA nucleotides are essentially ribonucleotides, with ribose as the pentose sugar component and a nitrogenous base. These ribonucleotides form a single strand, with bases studded along the sugar-phosphate backbone. This single-stranded structure is what separates RNA from DNA, which typically exists as a double helix.
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AS MUCH INFORMATION ABOUT SMOKING AND PASSIVE SMOKING AS POSSIBLE WITH STATISTICS AND WHAT EFFECT IT HAS ON THE WORLD GLOBALLY
WILL BE GIVING BRAINLIEST
Answer:
there is a good and bad effect on the world, the positive reason being economically. smoking is a great money maker it was worth US$88 billion dollars in 2018. the negative reason is the pollution and what it does to the human body such as cancer
Explanation:
Are a type of lipid that consists of fatty acids combined with alcohols or other
Final answer:
Lipids are a diverse group of organic molecules including triglycerides, which consist of glycerol bonded to three fatty acids. Triglycerides are the main component of body fat and can contain either saturated or unsaturated fatty acids. Other lipid types include phospholipids and steroids, all vital to organism function.
Explanation:
Lipids are a diverse group of organic compounds that are insoluble in water but soluble in organic solvents. They play vital roles in living organisms and include substances like fats, oils, waxes, and steroids. One common type of lipid is the triglyceride, which is formed when a glycerol molecule combines with three fatty acid molecules. Glycerol is a sugar alcohol, a simple, sweet-tasting, non-toxic compound that is colorless and odorless.
Triglycerides are the primary constituent of body fat in humans and animals, and can also be found in plant-derived fats. They are important for storing energy and providing insulation. Triglycerides come in many varieties but can be broadly categorized into two types based on the fatty acids they contain: those with saturated fatty acids and those with unsaturated fatty acids. The unsaturated ones are commonly found in plant products and are associated with health benefits.
Other types of lipids include phospholipids and steroids, each of which has unique functions in the body. Phospholipids are essential components of cell membranes, while steroids, like cholesterol, serve as precursors to important hormones and have structural roles in cells.
A series of steps that guide scientist to investigate questions about a natural world
Answer:
Scientific method
Explanation:
The scientific method is a systematic process used by scientists to explore observations, formulate hypotheses, and conduct experiments to investigate questions about the natural world. This method includes steps such as observation, hypothesis formation, experimentation, and analysis of results. It is adaptable and applicable to many fields of study.
A series of steps that guide scientists to investigate questions about the natural world is known as the scientific method. This process is integral to the way scientists explore observations, develop hypotheses, and conduct experiments. It typically begins with an observation that leads to a question. Following this, scientists engage in background research to frame a hypothesis, which is then rigorously tested through experimentation. After data collection, the results are analyzed, leading to conclusions that can either support or refute the hypothesis. Importantly, the scientific method is adaptable and can be applied beyond traditional scientific disciplines, embodying a standardized approach to problem-solving and inquiry.
If individuals at one end of the curve have a higher fitness,what is it called?
A.stabilizing selection
B.disruptive selection
C.directional selection
Answer:
C. directional selection
Explanation:
If individuals at one end of the curve have a higher fitness, it is called directional selection.
Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be to test for liberation of O2 in the light. to determine if they have thylakoids in the chloroplasts. to test for CO2 fixation in the dark. to the action spectrum for photosynthesis.
Answer:
Just completing challenges Sorry
Explanation:
Which is the central element for all living things?
The central element for all living things is Carbon.
What is Carbon?The element Carbon is the basis of all human life. The word carbon in English is derived from the Latin name for burnt wood, carbo. It is denoted in the periodic table with the symbol C. It is the 4th most abundant element in the universe after hydrogen, helium, and oxygen, and the second-most in the human body after oxygen.The reason carbon is the basic element of life is the carbon’s ability to form stable bonds with many elements, including itself. This property allows carbon to form a huge variety of very large and complex molecules.The chemical symbol for Carbon is C. It is nonmetallic and tetravalent-making four electrons available to form covalent chemical bonds. Carbon is one of the few elements known since antiquity.To know more about carbon, refer to: https://brainly.com/question/27929718
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Staining is an important way to improve what aspects of microscopy?
Answer:
Staining is an important way to improve RESOLUTION AND CONTRAST.
Explanation:
Microscopy refers to the use of microscope. Microscope is a scientific optical instrument that is normally used to achieve in depth study of invisible and very tiny objects. There are many techniques in microscopy, these techniques are use to improve the type of view produce by the microscope.
Staining is one of the techniques that are used in microscopy. It involves adding color to the objects that one wants to view under the microscope. Both living and non living objects can be stained. The major reason for staining is to improve the visualization of the stained object under the microscope. The staining is done in such a way that different important structures will be highlighted.
There are two types of staining, they are simple and differential staining.
Staining enhances contrast and visibility of microscopic specimens, allowing for better observation of cellular structures. It is vital in overcoming light microscopy's limitations in resolution and helps differentiate cell types. Mastery of staining techniques ensures clear and useful microscopic images.
Staining is a fundamental technique in microscopy that significantly enhances the visibility of microscopic specimens. By creating a contrast between the organism and its background, staining allows for better observation and analysis of various cellular structures, sizes, and arrangements. Utilizing stains or dyes can also overcome limitations associated with resolution and contrast in light microscopy. When specimens are properly fixed and stained, they reveal detailed information on cell morphology and can be differentiated according to their unique chemical compositions. Mastery of staining techniques and knowledge of which stains are best suited for each specimen type are crucial for obtaining clear, useful images in microscopy.
For instance, basic staining requires the use of a single dye applied directly to the specimen (direct stain) or used to stain the surrounding area (negative stain), giving a clear image of microbial characteristics. More complex differential staining techniques can be used to differentiate between cell types or cell components and provide further insights into their structures.
Overall, the application of staining techniques in microscopy is vital for achieving the necessary contrast to visualize minute details of microbes and cells. A well-executed stain is critical for proper specimen examination and interpretation in fields such as microbiology and histology.
The physical characteristics of an organism are its a. genetics b. heredity c. phenotype d. genotype
The physical characteristics of an organism are known as its phenotype, which is determined by its genotype and the interaction with its environment. Genetics is the study of these features, while heredity refers to the passing on of these genetic traits. The physical characteristics of an organism are its c
Explanation:The physical characteristics of an organism are its c. phenotype. The term 'phenotype' refers to the observable physical properties of an organism. These could include traits like color, shape, size, and behavior, among others. These characteristics are determined by the interaction of an organism's genotype, which is the set of genes it carries, and the environment. Genetics is the study of genes, genetic variation, and heredity in organisms. Heredity is the passing of genetic traits from parents to offspring. However, it is not the physical characteristics, but the genetic information passed on.
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Biogeochemical cycles are crucial to ecosystem function because _____.
Answer:
The correct option is B.
Explanation:
The options attached to the question are given below:
A. They keep the planet warm enough for living things to survive
B. Nutrients and other life-sustaining molecules are in limited supply and must be continually recycled
C. Energy flows through ecosystems in one direction only and is eventually dissipated as heat
D. They remove poisons and keep them locked up in "sinks"
Biogeochemical cycles refers to the pathways by which chemical substances move through the abiotic and biotic segments of the earth. The most important biogeochemical cycles include: carbon, nitrogen, phosphorus, oxygen and water cycles. Biogeochemical cycles transport and store important substances so that they can be available for the use of living organisms.
Biogeochemical cycles are very crucial to living organisms because they help to recycle nutrients and other life sustaining molecules, which are in limited supply and which must be continuously recycled.
Biogeochemical cycles are crucial to ecosystem function because they involve the recycling of essential elements between living organisms and their nonliving environment. Understanding these cycles is important for the health of the Earth and its ecosystems. Human activities that disrupt these cycles can damage ecosystems and potentially cause global climate change.
Explanation:Biogeochemical cycles are crucial to ecosystem function because they involve the recycling of essential elements between living organisms and their nonliving environment.
These cycles, such as the water, carbon, nitrogen, phosphorus, and sulfur cycles, have major impacts on ecosystem structure and function.For example, the movement of water is critical for the leaching of nitrogen and phosphate into rivers, lakes, and oceans.
Furthermore, the ocean itself is a major reservoir for carbon. Mineral nutrients are cycled through the entire biosphere, from one living organism to another, and between the biotic and abiotic world.Understanding these cycles is important for the health of the Earth and its ecosystems. Human activities that disrupt these cycles, such as pollution and oil spills, can damage ecosystems and potentially cause global climate change. By protecting and preserving these biogeochemical cycles, we can help maintain a healthy environment.Learn more about Importance of Biogeochemical Cycles in Ecosystems here:https://brainly.com/question/31621334
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Which of the following is not true of air masses? (Do not delete my question earth science is not an option for a subject!!)
A.) An air mass cannot transfer energy from one area to another
B.) A large mass of air takes on the temperature and humidity characteristics of the land or water under it
C.) And Air mass redistributes energy by moving from place to place
Answer:
A.) An air mass cannot transfer energy from one area to another
Explanation:
The air masses are constantly on the move. They can be warm and moist, or cold and dry, as well as hot and dry, all depending on the place above which they have formed. The air masses that form over warm, large bodies of water and warm and moist. The air masses that form over cold regions are cold and dry, and the air masses that form deeper into the continent in hot regions, are hot and dry. Because the air masses are constantly on the move, they manage to transfer their energy from one area to another, resulting in change of weather conditions as the energy is transferred.
The statement that an air mass cannot transfer energy from one area to another is not true. Air masses can and do transfer energy in ways such as conduction or radiation. The other choices accurately describe the properties of air masses.
Explanation:The following statement is not true of air masses: A.) An air mass cannot transfer energy from one area to another.
Air masses have the ability to transfer energy from one area to another in two ways: Via radiation or conduction. For instance, warm air masses can move and transfer heat to cooler areas, thus transferring energy.
Moreover, options B and C: A large mass of air takes on the temperature and humidity characteristics of the land or water under it and an Air mass redistributes energy by moving from place to place respectively, are both true descriptions of the properties of air masses.
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Identify the phrase that best describes a transfer of energy between the hydrosphere and the atmosphere.
1)Ocean currents transport warm water from the equator to the poles and cold water from the poles to the tropics.
2)These currents help regulate air temperatures and, therefore, the global climate, counteracting the uneven distribution of solar radiation reaching Earth.
3)If there were no currents, the temperature near the equator would be extremely hot, and the temperature near the poles would be extremely cold.
4)These areas would not be suitable for living things to survive.
Answer:
2) These currents help regulate air temperatures and, therefore, the global climate, counteracting the uneven distribution of solar radiation reaching Earth
Explanation:
The ocean currents are part of the hydrosphere. They receive warmth from the sunlight. They warm up at the lower latitudes, and cool off at the higher latitudes. The ocean currents are in constant movement though, and they warm up the higher latitudes, and cool down the lower latitudes. The warming up and cooling off of the temperatures goes through the radiation of energy from the ocean currents. That radiation goes to the air masses, thus there is a transfer of energy from the hydrosphere tot he atmosphere. This transfer of energy between these two spheres helps to balance and modify the climate around the globe.
The phrase that best describes a transfer of energy between the hydrosphere and the atmosphere is:
1) Ocean currents transport warm water from the equator to the poles and cold water from the poles to the tropics.
Option 1) "Ocean currents transport warm water from the equator to the poles and cold water from the poles to the tropics." best describes a transfer of energy between the hydrosphere and the atmosphere. Ocean currents play a crucial role in redistributing heat energy around the globe. Warm currents carry heat from the equator towards the poles, while cold currents transport cold water from the poles towards the tropics. This movement of water helps regulate air temperatures, influencing the climate on both regional and global scales. By transferring heat energy between the hydrosphere and the atmosphere, ocean currents play a significant role in shaping weather patterns and maintaining the Earth's overall climate balance.
What's the role of oxygen in cellular respiration? A. It accepts electrons and keeps the electron transport chain running. B. It breaks down carbon-based sugar molecules to release energy and forms carbon dioxide. C. It combines with hydrogen ions in sugar molecules to release energy and form water. D. It supplies electrons to the electron transport chain to keep it running.
Answer:
The correct answer is option B. It breaks down carbon-based sugar molecules to release energy and forms carbon dioxide.
Explanation:
Hello!
Let's solve this!
In cellular respiration, oxygen is consumed to break down glucose molecules and form ATP. ATP is the energy that we then consume.
After the explanation, we conclude that the correct answer is option B. It breaks down carbon-based sugar molecules to release energy and forms carbon dioxide.
Oxygen's role in cellular respiration is as an electron acceptor in the electron transport chain, where it combines with electrons and hydrogen ions to form water while releasing energy used to generate ATP. Without oxygen, this energy production halts.
Explanation:The role of oxygen in cellular respiration is primarily that of an electron acceptor in the electron transport chain. Hence, option A is correct. Through the process of cellular respiration, cells extract energy from nutrients and this energy is stored in ATP molecules. The final step in this process, the electron transport chain, requires oxygen. The role of oxygen is to combine with electrons and hydrogen ions to form water. This reaction releases energy that is used to form ATP. If oxygen is not present, the electron transport chain cannot function, and this halts ATP production, causing cells to run out of usable energy.
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Which of the following will NOT cause mass extinction?
A. Drastic change is weather
B. Geological change
C. Both a and b
D. None of the above
Answer:
D. None of the above
Explanation:
Reason that Drastic Change in weather may cause mass extinction
Weather plays an important role in the survivability & the growth/diminish of the population. For example, animals that need large amounts/bodies of water (for example fishes), will not survive when the area is hit with a heat wave & drought, which would cause fishes to surface, and die.
Reason that Geological change would play a large role in mass extinctions
While the Geography is constantly changing, large abrupt changes would cause a upheaval and may upset the population, leading to a depletion of resources or even a sudden destruction of part/all of the population. For example, an earthquake may kill large amounts of animals, and the destruction of the greenery in the area may severely limit the amount of food/decrease the primary consumer's populations, leading to a starvation.
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One function of the poly-A tail on eukaryotic mRNA sequences is to help the mRNA be transported from the nucleus to the cytoplasm. Prokaryotic mRNA also has a poly-A tail. Choose the best explanation of the prokaryotic poly-A tail.
A. Prokaryotic poly-A tails have the same functions as eukaryotic poly-A tails, because this process is highly conserved throughout different species.
B. Prokaryotic poly-A tails are composed of a different molecular structure compared with eukaryotic poly-A tails.
C. Prokaryotic poly-A tails have other functions, because prokaryotes don't have nuclei.
D. Prokaryotic poly-A tails aren't important, because prokaryotes don't have nuclei.
Answer:
C. Prokaryotic poly-A tails have other functions, because prokaryotes don't have nuclei.
Explanation:
In eukaryotes, the poly-A tails help in import of mRNA from cytosol to nucleus with the help of proteins named as importins and then export of mRNA from nucleus to cytosol with the help of proteins named as exportins. In prokaryotes they serve the function of mRNA degradation instead. In prokaryotes, mRNA doesn't need to be imported and exported because they do not have a well defined double membranous organelle named as nucleus. All of their genetic material lies in the cytosol in the form of nucleoid.
In eukaryotes, poly-A tails serve many other functions apart from export and import like it imparts stability to mRNA, facilitates degradation of mRNA and increases translation efficiency by helping in circularization.
9. Chargaff's rule states that the amounts of guanine and cytosine are roughly the same, and the amounts of adenine and thymine are roughly the same
A. in eukaryotes only. The rule doesn't apply to prokaryotes
B. except in species that use uracil in place of thymine in their DNA
C. but the relative amounts of G+C and A+T vary by species.
D. and the relative amounts of G+C and A+T don't vary by species.
Answer:
C. but the relative amounts of G+C and A+T vary by species.
According to Chargaff's rule guanine and cytosine are roughly same and the amount of adenine and thymine are also roughly same but the relative amounts of G+C and A+T vary by species.
Chargaff Rule:-The rule that in DNA there is always equality in quantity between the bases Adenine and Thymine and between bases Guanine and Cytosine. The second rule states that the amount of cytosine, guanine, adenine and thymine vary from species to species.
Therefore, option (c) is the correct answer.
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The secretions of the pituitary gland are most directly regulated by the
Answer:
Reticular formation.
What is the term for the layers of bony matrix surrounding the vessels and nerve?
Explanation:
Each osteon consists of lamellae, layers of compact matrix surround a central canal (the haversian or osteonic canal) which contains the bone's blood vessels and the nerve Fibre. Osteon in compact bone tissue are aligned in the same direction along lines of stress, helping the bone resist bending or fracturing.
Hope it's helpful...
The layers of bony matrix surrounding the vessels and nerve are called lamellae which are part of the structure of osteons in compact bone. The bone is covered by periosteum membrane externally, and internally by the endosteum lining the medullary cavity.
Explanation:The term for the layers of bony matrix, or compact bone, that surround the vessels and nerve is called lamellae. Compact bone is organized into cylindrical structures known as osteons or Haversian systems. These osteons are composed of lamellae which are layered around a central canal, the Haversian canal. The Haversian canal contains the bone's blood vessels and nerve fibers. Osteocytes the cells of mature bone, occupy small cavities known as lacunae, found between the lamellae.
The outer surface of the bone is enveloped by a membrane known as the periosteum which contains blood vessels, nerves, and lymph vessels that nourish the compact bone. Tendons and ligaments are also attached to the bones at the periosteum. Within the bone the medullary cavity is lined with the endosteum where bone growth, repair, and remodeling occur.
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PLEASE HELP ME WHY PEOPLE SMOKE?
Answer:
In my opinion, people smoke because they're "crazy" and need some "help."
They smoke maybe because the cigar is "good" or something...
Which small piece of a DNA molecule contains no base pairing errors?
A. TCT GA
AGA GC
B. TCT CG
AGA GC
C. TCT CG
AGA CG
D. TCT CG
ATG GC
Answer:
The answer is B
Explanation:
The small piece of a DNA molecule contains no base pairing errors:
T goes with A __ C goes with G __ G goes with C
B. TCTCG
AGAGC
TCT CG
AGA GC
contains no base-pairing errors.
What is base pairing?Adenine (A), thymine (T), guanine (G), and cytosine (C), according to the Watson-Crick base pairing, which is the basis for the helical structure of double-stranded DNA. Inside the DNA molecule, A only interacts with T, and C only interacts with G. Thymine is swapped out for uracil (U) in RNA.Thus, we can conclude that option B is correct.
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When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. The internal structures disrupted by this chemical are probably __________.View Available Hint(s)When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. The internal structures disrupted by this chemical are probably __________.rough endoplasmic reticulummitochondriacell junctionsmicrotubules
Answer:
Microtubules
Explanation:
These filament-like structures are a major component of the cytoskeleton of the cell and help is maintain asymmetrical cell shape. They are composed of tubulin molecules arranged to form a 'hollow straw' attached to the cell membrane end to end . The contraction and lengthening of these microtubules are controlled by the addition of removal these of tubulin molecules to vary its length.
In the case of elongated, tube-shaped cells from the lining of the intestine sagging and becoming rounded after treatment with a certain chemical, the internal structures likely disrupted are the microtubules. These structures are part of the cell's cytoskeleton and help maintain its shape, particularly in the case of columnar epithelial cells.
Explanation:When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. The internal structures disrupted by this chemical are probably microtubules.
Microtubules are part of the cytoskeleton of a cell, helping to maintain its shape and also serving crucial roles in intracellular transport and cell division. If they are disrupted, the cell can lose its form, leading to a rounded shape. The elongated, tube-shaped cells in the lining of the intestine, also known as columnar epithelial cells, have a stack of microtubules that maintain their elongated shape. Thus, a chemical treatment that disrupts the microtubules would cause the cells to lose their elongated form and become rounded.
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Sb-50 on a recreational boat, the location of emergency equipment (life jackets, fire extinguishers, visual distress signals, radio, etc.) should be reviewed before departure with which persons?
Answer: Everyone aboard
Explanation:
Answer:
Every person on the board
Explanation:
While going for boating for any purpose either recreational or work, all the individuals on the boat are required to have the access to following safety gears as per the norms of U.S. Coast Guard.
1. There must be access to life jackets/ flotation devices to each and every member on the board
2. Every member on the board must be aware of location and usage of fire extinguishers in times of emergency
3. Likewise visual and sound signaling devices must be accessible to everyone.
what do we call the process used to create a glofish?
A.agriculture
B.sexual reproduction
C.genetic engineering
D.asexual reproduction
_____ mutations affect only the individual in which they occur; _____ mutations are passed from parent to offspring.
Which of the following mutations would likely be most dangerous to a cell?A. Deletion of one nucleotideB. Deletion of three nucleotidesC. Substitution of one nucleotide for another
Answer:
A
Explanation:
The reason the deletion of a nucleotide can be a lethal mutation is that it causes a frameshift mutation. This is due to teh fact that the codon sequence on the DNA is shifted by a single nucleotide. Therefore, the codons will read differently downstream from the place the deletion happened. The amino acids coded for by these codons will change too. The translated proteins will be defective and the organisms will be adversely affected, phenotypically.
The most dangerous mutation to a cell among the given choices would be the deletion of one nucleotide. This could result in a frameshift mutation, which can change every subsequent codon and potentially lead to a non-functional protein.
Explanation:In the context of mutations and their potential harm to a cell, between the options of deletion of one nucleotide, deletion of three nucleotides, or substitution of one nucleotide for another, the most dangerous would likely be the deletion of one nucleotide.
Mutations including deletions or insertions can cause a frameshift mutation if the number of nucleotides added or deleted is not a multiple of three. For each set of three nucleotides, called a codon, corresponds to a single amino acid. A deletion of one nucleotide would shift the reading frame, potentially changing every subsequent codon and thus every subsequent amino acid in the sequence. This can result in a non-functional protein, and therefore, have significant detrimental effects on the cell.
In contrast, the deletion of three nucleotides (a complete codon), would only result in the loss of a single amino acid in the produced protein, which may or may not significantly impact the function of the protein. Similarly, while a substitution could potentially alter the amino acid specified by the affected codon, this is less deleterious than a frameshift mutation.
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