Early bryophytes have had gene sequences most similar to the charophyte (stonewort) which have the common ancestor of the land plants so the correct option is B.
The charophyte( stonewort) was the common ancestor of the land shops, and the gene sequences of the other different types of early land shops should have been most analogous to this ancestor. Of the options handed, early bryophytes should have had the most analogous gene sequences,
since they're the closest cousins to the charophyte ancestor. Beforehand angiosperms, early gymnosperms, and early ferns should have had gene sequences that were slightly less analogous to the charophyte ancestor, since they evolved latterly and are more distant cousins.
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isotonic, hypotonic and hypertonic solutions examples
An isotonic solution is one that has the same osmolarity, or solute concentration, as another solution. If these two solutions are separated by a semipermeable membrane, water will flow in equal parts from each solution to the other.
The effect is zero water flow between the two solutions, even though the water is moving in both directions. In biology, some cells must be maintained in an isotonic solution to support cellular functions. Examples of isotonic solutions are blood cells, osmoconformers, and osmoregulation.
While a hypotonic solution is a solution that has a lower osmotic pressure than other solutions. This is because a hypotonic solution has a lower concentration of solutes than the concentration of solutes in other solutions, for example, saline solutions and intravenous fluids.
Hypertonic solutions are solutions that have a higher solute concentration than other solutions e.g. saline solutions and intravenous fluids.
High concentrations make water osmosis or flow out of a hypertonic solution (solute cannot cross the membrane so that the solvent or water osmosis). For example a Solution of 5% dextrose (sugar), and 0.45% sodium chloride.
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brain imaging allows us to localize brain activity. however, such scans are only
A cerebrum positron discharge tomography (PET) examination is an imaging trial of the mind. It utilizes a radioactive substance called a tracer to search for sickness or injury in the cerebrum.
Electroencephalography (EEG) First found about 100 years back, EEG estimates electrical exercises of the cerebrum from terminals put on the scalp. For the most part, EEG is gathered from tens to many terminals situated at various areas on the scalp.
An X-ray won't show any cerebrum movement however, countless specialists will suggest other mind imaging strategies first. It's more costly and harder to do an X-ray test so it's utilized provided that the specialist believes there's a strange development.
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Which of the following processes occurs during transcription? A) DNA is replicated B) RNA is synthesized Ktfet proteins are synthesized D) mRNA attaches to ribosomes etnediale 13) Which of the following molecular structures contain codons? A) a protein B) mRNA tRNA D) rRNA'
RNA is created. Proteins for Ktfets are created.
Codons are found in mRNA.
Pre-mRNA transcripts are created during transcription by the enzyme RNA polymerase (green), which uses DNA as a template (pink). The pre-mRNA gets transformed into a mature mRNA molecule, which may then be translated to create the protein molecule that was originally encoded by the gene.
A messenger RNA molecule's sequence of codons. Three nucleotides make up each codon, which typically correlate to one amino acid. The letters A, U, G, and C are used to abbreviate the nucleotides. The building blocks of this mRNA, known as codons, which are three-nucleotide mRNA sequences, are smaller molecules called amino acids. Every codon is identified by a unique amino acid that it represents.
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triacylglycerols are synthesized by during times of starvation via a process known as . a. dihydroxyacetone phosphate; glyceroneogenesis b. ketone bodies; ketosis c. dihydroxyacetone phosphate; ketosis d. acetyl coa; ketosis e. acetyl coa; glyceroneogenesis
The triacylglycerols are synthesized by dihydroxyacetone phosphate during times of starvation via a process known as glyceroneogenesis. The correct option is Option A.
Glyceroneogenesis is a metabolic pathway where glycerol 3-phosphate is synthesized from precursors like glucose. Glycerol 3-phosphate is generated from glucose by the process of glycolysis, but then concentration of glucose drops in the cytosol, then it is generated by a pathway called glyceroneogenesis. It uses pyruvate, alanine, glutamine and many others from the TCA cycle. Phosphoenolpyruvate carboxykinase (PEPC-K) is the enzyme that catalyzes the decarboxylation of oxaloacetate to phosphoenolpyruvate . This is the main regulator for this pathway. Glyceroneogenesis can be observed in adipose tissue and also in the liver. It is a significant biochemical pathway that regulates cytosolic lipid levels. Intense suppression of glyceroneogenesis may lead to metabolic disorders such as type 2 diabetes.
The main precursors of glyceroneogenesis are pyruvate, lactate, glutamine, and alanine. Glyceroneogenesis is also known as the branched pathway of gluconeogenesis because the first few steps in glyceroneogenesis are exactly the same as gluconeogenesis.
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Which of the following does NOT contribute to global wind patterns PLEASE HELP ME YALL
do all the genes that determine a mouse's fur color interact equally
No, not all the genes that determine a mouse's fur color interact equally.
What is a Gene?This is referred to as the basic unit of heredity passed from parent to child and they are usually made up of sequences of DNA which is referred to as the genetic material of most living organisms.
Epistasis on the other hand is referred to as a circumstance where the expression of one gene is modified by the expression of one or more other genes such as in the case of a mouse coat color in which the mottled agouti coat color (A) is dominant to a solid coloration, such as black or gray.
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Plant cells and bacteria both have cell walls. Many antibiotics work by breaking down the proteins that make up the cell wall, so bacteria become vulnerable to the human body's immune system.
Which statement explains why antibiotics do not break down cell walls in plants?
Responses
Plant cells are less complex than bacterial cells, and their cell walls are made of enzymes which prevent the antibiotic from breaking down the plant cell walls.
Plant cells are less complex than bacterial cells, and their cell walls are made of enzymes which prevent the antibiotic from breaking down the plant cell walls.
Plant cells are prokaryotic, and their cell walls are made of lipids which prevent the antibiotics from breaking down the plant cell walls.
Plant cells are prokaryotic, and their cell walls are made of lipids which prevent the antibiotics from breaking down the plant cell walls.
Plant cells are simple cells, and their cell walls are made of carbohydrates which prevent the antibiotics from breaking down the plant cell walls.
Plant cells are simple cells, and their cell walls are made of carbohydrates which prevent the antibiotics from breaking down the plant cell walls.
Plant cells are eukaryotic, and their cell walls are made of different proteins which prevent the antibiotics from breaking down the plant cell walls.
Antibiotics do not break down cell walls in plants because: Plant cells are eukaryotic, and their cell walls are made of different proteins which prevent the antibiotics from breaking down the plant cell walls. The last option is the correct answer.
What is Antibiotics?This is a type of substance that fight against bacteria. It is a very vital type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or stop the growth of bacteria.
cell walls a rigid, external layer that is specifically designed to give structural support and rigidity. It also keeps the interior components of the cell firm and safe from the external environment.
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Marine Science
1. If the amount of oil that spilled into the Gulf Coast had been processed oil,
would that have been better or worse for the environment? Explain your
answer.
2. Why is it so difficult to tell the impact of pollution in the deep ocean region?
3. How might marine scientists combat eutrophication?
4. Which layer of the ocean do you think is most impacted by the Great Pacific
Garbage Patch? Explain your answer.
5. How might the negative impact of tourism on marine ecosystems be
minimized?
Whether the oil that spilled into the Gulf Coast would have been better or worse for the environment if it had been processed oil is difficult to determine as it would depend on various factors such as the amount, type and location of the spill, and the methods used to clean up the spill.
Why is it so difficult to tell the impact of pollution in the deep ocean region?
It is difficult to tell the impact of pollution in the deep ocean region because of the limited access to this region and the challenges of monitoring and measuring the effects of pollutants in this remote and harsh environment. The deep ocean is also a complex and interconnected system, so the impact of pollution may take years to emerge and be difficult to isolate and quantify.
Marine scientists can combat eutrophication by reducing nutrient inputs from human activities such as agricultural and wastewater runoff, and by promoting best practices for managing these inputs. They can also monitor and study the effects of eutrophication on marine ecosystems and develop strategies for restoring affected areas.
The layer of the ocean most impacted by the Great Pacific Garbage Patch is likely to be the surface layer, where plastic and other debris are carried by ocean currents. However, as the plastic and debris break down into smaller pieces, they may also impact deeper ocean layers.
The negative impact of tourism on marine ecosystems can be minimized by implementing sustainable tourism practices, such as reducing waste and energy consumption, promoting responsible wildlife interactions, and protecting sensitive marine habitats and ecosystems. Additionally, regulations and guidelines can be put in place to manage the impact of tourism on marine ecosystems, and education and outreach efforts can be used to raise awareness about the importance of protecting the oceans.
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What features would suggest that a sample of scientific writing reflects scientific thinking?.
Features would suggest that a sample of scientific writing uses empirical data to support its arguments because this kind of data is derived from experiments and observations in a scientific study.
Scientific writing shows evidence of deductive reasoning because deductive reasoning narrows a hypothesis and investigates it in greater depth. This method is what we use to see if the hypothesis is true. The scientific method is the process of testing and experimenting to objectively establish facts. The fundamental steps are making an observation, developing a hypothesis, making a prediction, carrying out an experiment, and then evaluating the outcomes.
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Kiwi Island is an imaginary 30,000-acre island in the
South Pacific. The population of Kiwi Island was
stable at 230 people between 2000 and 2010. Many
areas of the island were tropical forests uninhabited
by people. As more and more people discovered this
paradise, the population began to double each year
after 2010.
1. Plot the population growth of Kiwi Island from
2000 to 2017.
The data for the population growth would be as follows:
2000: 230
2001: 230
2002: 230
2003: 230
2004: 230
2005: 230
2006: 230
2007: 230
2008: 230
2009: 230
2010: 230
2011: 230 * 2 = 460
2012: 460 * 2 = 920
2013: 920 * 2 = 1840
2014: 1840 * 2 = 3680
2015: 3680 * 2 = 7360
2016: 7360 * 2 = 14720
2017: 14720 * 2 = 29440
What is population?Population refers to the number of individuals of a particular species or group of species living in a specific geographic area or habitat. In a human context, population refers to the total number of people living in a specific area, such as a country, city, or region. Populations can be studied and analyzed in terms of demographics, migration patterns, birth and death rates, and other factors that affect their growth and change over time.
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Learning Task 3: Convert the sentences in Learning Task 2 into grammatically
correct positive statements. Write your answers in your notebook.
Sentence 1 can be grammatically corrected as "he likes participating in games. He is so energetic".
The sentences given can be corrected as below:
1. He likes participating in the games. He is so hyperactive.
Correct sentence: He likes participating in games. He is so energetic.
2. Our exam yesterday was extremely difficult.
Correct sentence: Our exam yesterday was very difficult.
3. My cousin is so chatty that we slept very late last night.
Correct sentence: My cousin is so chatty that we slept late last night.
In the first sentence, we used energetic instead of hyperactive. This is because "so hyperactive" is grammatically incorrect as 'hyperactive' relates with 'so' in its sense. In the next sentence, 'very difficult' can't be used. Instead, 'too' or 'very' can be used. In the last sentence, again, 'very late' is incorrect. So, we have used 'slept late last night'.
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Complete question is:
Convert the sentences in Learning Task 2 into grammatically correct positive statements. Write your answers in your notebook.
He likes participating in the games. He is so hyperactive.
Our exam yesterday was extremely difficult.
My cousin is so chatty that we slept very late last night.
A mutation occurs in a bacterial cell that allows it to tolerate a more acidic environment than normal. This bacterial cell survives andreproduces.
What is the impact of this mutation over
time?
O New populations of bacteria that can tolerate all environments will develop.
O A new population of bacteria that tolerate acidic environments develops.
O There will be no impact, as the mutation will die out.
Answer:
the answer is the second one
why is polarity relevant to the biology of a cell and physiology
Answer:
Cell polarity plays a critical role in cell function. A prime example is the epithelial cells utilizing apical-basal polarity to provide a barrier function against pathogens. Another example is cell migration which requires front-to-back polarity to allow cells to adhere to and detach from the ECM.
According to the PHET gene expression simulation linked out in the PCA, what two proteins are needed to produce an mRNA for Gene 1? mRNA destroyer Positive transcription factor Ribosome RNA polymerase
According to the PHET gene expression simulation linked in PCA, the two proteins needed to generate mRNA for Gen 1 are transcription positive and RNA polymerase.
In genetics, transcription factors are a group of proteins in the cell nucleus that participate in the transcription of the genetic code into mRNA. Transcription factors are the final link in signal transduction pathways that convert extracellular signals into modulations of genetic expression.
The transcription component consists of DNA and RNA polymerase enzymes. The DNA strand is used as a template to form mRNA. Meanwhile, the RNA polymerase enzyme plays a role in the formation and elongation of the mRNA (mRNA) chain.
So positive transcription factors and RNA polymerase are the proteins needed to produce mRNA for Gen 1. mRNA is produced from DNA molecules through the process of transcription.
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which of the big sagebrush plants is the most fit, based only on the information presented? all of these individuals are equally fit based on the information presented. the individual that produces 3% more offspring each year than others in its population the individual that can survive with 10% less water than the others in its population the individual that is the most resistant to disease organisms in the population the individual that produces 5% more distasteful chemicals, making it 2% less likely to be attacked by herbivores than others in its population
All of these individuals are equally fit based on the information presented.
Fitness in biology is a complex concept that refers to an organism's ability to survive and reproduce in its environment. It is determined by many factors, including the ability to acquire resources, resist predators, and defend against disease organisms.
In the case of the big sagebrush plants, the information presented describes specific traits that can enhance survival and reproduction in the population. For example, producing 3% more offspring each year or being able to survive with 10% less water than others can increase the plant's chances of survival and reproduction.
Similarly, producing 5% more distasteful chemicals to deter herbivores or being the most resistant to disease organisms can also enhance the plant's fitness.
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what are the first two fuel sources that the body uses during fasting?
The human body uses different sources of energy to function, and the primary source of energy during fasting is stored glucose and fat. Here is a detailed explanation of the first two fuel sources the body uses during fasting:
Glucose: Glucose is the primary source of energy for the body, especially the brain. It is stored in the liver and muscles as glycogen and can be rapidly converted to glucose as needed. During fasting, the body will first use up stored glucose as its primary energy source. This glucose is released into the bloodstream, where it can be used by the cells to produce energy.
Fat: Once the stored glucose has been depleted, the body will start to break down stored fat as its primary source of energy. Fat is stored in adipose tissue throughout the body and can be broken down into fatty acids and glycerol, which can be used as fuel for the cells. The breakdown of fat is a slower process than the breakdown of glucose, but it provides a more sustained source of energy.
In summary, during fasting, the body first uses up stored glucose as its primary energy source and then switches to breaking down stored fat as its primary source of energy.
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how long does it take for the number of 158o nuclei in a given sample to decrease by a factor of 1×10−3?
It takes 1279 s for the number of 1580 nuclei in a given sample to decrease by a factor of 1×[tex]10^{-3}[/tex].
The half-life of a quantity is the time it takes to decline to half of its starting value. In nuclear physics, the phrase is typically used to indicate how rapidly unstable atoms undergo radioactive decay or how long stable atoms survive. The word is often used to describe any form of exponential decay in general.
The biological half-life of medications and other compounds in the human body, for example, is referred to in the medical sciences. In exponential growth, the inverse of half-life is doubling time. Half-life is a characteristic unit for the exponential decay equation that is constant across the lifespan of an exponentially decaying quantity. The table that follows depicts the reduction of a quantity as a function of the number of half-lives elapsed.
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Name the structure that is composed of two or more tissue types that work together to perform specific functions for the body.
A structure composed of two or more tissue types working together to perform specific functions for the body is called an organ.
An organ is a complex structure in the body that is composed of two or more different types of tissues working together to perform specific functions. The different types of tissues are organized in a specific manner to achieve the organ's function.
For example, the stomach is an organ that is composed of several different types of tissues, including muscle tissue, glandular tissue, and epithelial tissue. The muscle tissue contracts and mixes the contents of the stomach, the glandular tissue produces digestive juices, and the epithelial tissue lines the inside of the stomach and protects it from the corrosive effects of digestive juices.
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explain how climate change is impacting biodiversity in ecosystems. provide two examples
Climate change is causing alterations in temperatures, precipitation patterns and sea levels, which are negatively affecting biodiversity in ecosystems. For example, it is causing the loss of habitats for polar bears in the Arctic and coral reefs in tropical oceans.
Climate change refers to the long-term changes in the average weather patterns that have come to define Earth's local and regional climates.
These changes are primarily caused by increased levels of greenhouse gases in the atmosphere, which trap more heat from the sun and warm the planet. As a result, temperatures are rising, precipitation patterns are changing, and sea levels are rising.
All of these impacts are having a negative effect on biodiversity, or the variety of life, in ecosystems.
For example, the loss of sea ice in the Arctic due to warming temperatures is causing the loss of habitat for polar bears, which rely on the ice to hunt and breed. As sea ice disappears, so do the polar bears' food sources, making it more difficult for the population to survive.
Another example is the decline of coral reefs in tropical oceans. Coral reefs are some of the most biodiverse ecosystems on the planet, providing habitat for thousands of species of fish, crustaceans, and other marine life.
However, warming oceans and ocean acidification, caused by increased levels of carbon dioxide in the atmosphere, are causing coral reefs to bleach and die. This loss of coral reefs is having devastating effects on the species that depend on them for survival, leading to a decline in overall biodiversity in these ecosystems.
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The atmospheric pressure at the surface of Venus is 91 times that of earth. (Earth's atmospheric pressure is 101kPa) How much force is exerted on a human body with a surface area of 1.8m^2.
F=1660113 N force is exerted on a human body with a surface area of 1.8m^2.
What is Atmospheric pressure ?
Atmospheric pressure, also known as air pressure, is the force exerted by the weight of the atmosphere on the surface of the Earth. It is expressed in units of pressure, such as kilopascals (kPa), hectopascals (hPa), or pounds per square inch (psi). The atmospheric pressure at sea level is typically taken as a standard reference, and it is about 1013 hPa or 14.7 psi.
Atmospheric pressure is an important factor in many aspects of weather and climate, as it affects the distribution of temperature, moisture, and wind across the Earth's surface. Changes in atmospheric pressure can cause changes in weather, such as the formation of high and low pressure systems, and they can also impact human health and well-being, as certain types of weather conditions can lead to headaches, joint pain, and other symptoms. In addition, atmospheric pressure plays a crucial role in various technological applications .
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Which nerve cells convey information within the nervous system?
Answer:
brain
Explanation:
the brain is responsible
23. Based on Table 2, what is the most likely density of water
at 10°C and 2.50% salinity?
A. 1.019
B. 1.017
C. 1.013
D. 1.010
The most likely density of water at 10°C and 2.50% salinity is 1,024.9 kg/m³.
What is salinity, and how does it typically manifest itself?The number of grams of salts per kilogram of saltwater, or salinity, is given in parts per thousand. The number of parts, or grams, of salt present in one kilogram (1,000 g), or parts per thousand, of saltwater is one part, or kilogram.
Why is the salinity 3.5%?The salinity (concentration of salt) in saltwater is around 35 parts per thousand, or 3.5% of the weight of the water is made up of dissolved salts. The weight of salt (as sodium chloride) would be around 120 million tons in a cubic mile of seawater.
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Match each type of bacterial cell arrangement with its proper description Tetrad N 2 Staphylococcus Sarcina Streptobacillus Match each of the options above to the items below. Grape-like (irregular) cluster of spheres Chain of rods Cubical packet of 8, 16, or more spherical cells Spheres in a group of four .
type of bacterial cell arrangement with its proper description
Tetrad - Spheres in a group of four
Staphylococcus -Grape like (irregular) clusters of spheres
Sarcina - Cubical packet of 8,16, or more spherical cells
Streptobacillus - Chain of Rods
The forms of bacteria are recognisable. Cocci (round or ellipsoidal cells, such as those found in Staphylococcus aureus or Streptococcus, respectively) are the most prevalent microscopic morphologies, followed by rods (such as Bacillus and Clostridium species), long, filamentous branched cells (such as Actinomyces species), comma-shaped cells (such as those found in Vibrio cholerae), and spiral cells (such as those found in Additionally, different species or groups of bacteria have distinct cell arrangements. Some rods or cocci, such as Staphylococcus aureus, produce clusters of spherical cells resembling grapes, whereas other round cocci form cubic packets as their typical growth pattern. Other types of bacteria have distinct cell growth patterns. In order to classify and diagnose, it is useful to look at things under a microscope.
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on a speed-time graph, which of the following represents that is slowing down
A line sloping from upper left to lower right on a speed-time graph represents that is slowing down.
What is a speed-time graph?A speed time graph is a graph that displays an object's motion over time. This graph is also known as the velocity-time graph. It gives information about the motion of an object.
A curve will be shown on the speed vs time graph since acceleration is a function of time. The area under this graph represents the distance traveled and the sloping line represents acceleration.
Slowing down is represented by a line sloping from upper left to lower right on a speed-time graph.
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ribosomes synthesize proteins in conjunction with the ____
Ribosomes synthesize protein in conjunction with the Rough endoplasmic reticulum.
Ribosomes on the rough endoplаsmic reticulum аre cаlled ‘membrаne bound’ аnd аre responsible for the аssembly of mаny proteins. This process is cаlled trаnslаtion. Certаin cells of the pаncreаs аnd digestive trаct produce а high volume of protein аs enzymes. Mаny of the proteins аre produced in quаntity in the cells of the pаncreаs аnd the digestive trаct аnd function аs digestive enzymes.
The rough ER working with membrаne bound ribosomes tаkes polypeptides аnd аmino аcids from the cytosol аnd continues protein аssembly including, аt аn eаrly stаge, recognising а ‘destinаtion lаbel’ аttаched to eаch of them. Proteins аre produced for the plаsmа membrаne, Golgi аppаrаtus, secretory vesicles, plаnt vаcuoles, lysosomes, endosomes аnd the endoplаsmic reticulum itself.
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why don’t people with dmd make dystrophin?
Mutation of the DMD gene will result in absence of the dystrophin protein, leading to degeneration of muscle fibers. The body can replace (regenerate) some muscle fibers, but over time more and more muscle fiber is lost. Such degeneration leads to the symptoms and findings associated with DMD.
DMD occurs because the mutated DMD gene fails to produce virtually any functional dystrophin. Individuals with BMD genetic mutations make dystrophin that is partially functional, which protects their muscles from degenerating as badly or as quickly as in DMD.
Dystrophin is made by an X-chromosome gene, DMD is caused by mutations in the dystrophin gene. These mutations can cause dystrophin production to cease entirely or to produce a truncated, non-functional form of the protein.
It is a hereditary condition that inhibits dystrophin synthesis, a protein that is essential for muscle function. Dystrophin deficiency causes gradual muscle deterioration and weakening in people with DMD.
Muscles are vulnerable to injury and damage when dystrophin levels are low. This causes muscle weakness and atrophy over time, which can eventually impair the heart and breathing muscles. Dystrophin deficiency also impairs the proper functioning of the muscle cell membrane, making muscle cells more vulnerable to harm and increasing the chance of muscle degeneration.
In short, persons with DMD are unable to make dystrophin due to dystrophin gene mutations. This lack of dystrophin causes gradual muscle degeneration and weakening, making daily activities difficult for people with DMD and potentially leading to life-threatening problems.
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1. The belief that there must be a way for nature and nature alone, to generate new and meaningful information (encoded in DNA, such that new and previously non-existent traits arise, giving rise to new and previously nonexistent kinds of organisms) is known as:
a. Natural selection
b. Creationism
c. Neo-Darwinism
d. None of the above
The belief that there must be a way for nature and nature alone, to generate new and meaningful information (encoded in DNA, such that new and previously non-existent traits arise, giving rise to new and previously nonexistent kinds of organisms) is known as None of the above, option D.
What is neo-Darwinian theory of evolution?The neo-Darwinian theory of evolution is an updated version of Charles Darwin's theory of evolution by natural selection. It takes into account recent discoveries in genetics, including the discovery of DNA as the genetic material, and the mechanisms of inheritance and mutation.
According to this theory, genetic variation arises through mutations and is passed on to offspring. This belief is not referred to by any of the listed options. It is a combination of ideas from evolution and genetics and is often referred to as the "modern synthesis."
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Nova ScienceNOW video.
Where did we come from?
1. Life emerged from___
2. Early life needed
and____
3. John Sutherland simulated the conditions in a________ as suggested by Charles Darwin and built a____ molecule for the first time.
4. Sunshine turns the____ base in RNA into a ________ base.
Life emerged from the water. Early life needed oxygen.
What is the origin of life?Life is eternal and coeternal with matter; it first appeared on Earth at or shortly after its creation.
A succession of developing chemical reactions led to the emergence of life on the early Earth. Such reactions might have been probable or might have needed one or more extremely unlikely chemical occurrences.
Life originated in water. Many theories were given by different scientists. Charles Darwin gave theory of natural selection, which is very useful to understand the evolution.
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Explain the properties of the cell membrane that make it selectively permeable.
Answer:
the phospholipid bilayer prevents the diffusion of most molecules across the membrane due to the hydrophobic nature of the tails.
Explanation:
Match each type of formed element with its lifespan.
Matches each type of formed element with its life span:
Erythrocytes ⇒ 120 days.Platelets ⇒ 8-10 days.Leukocytes ⇒ 12 to 20 daysErythrocytes have a life span, which is about 4 months or 120 days. These blood cells are produced routinely in the spinal cord, namely in flat bones and short bones. Red blood cells cannot live long because they do not have a nucleus or nucleus and several other cell organelles.
Leukocytes have a shorter lifespan than red blood cells, which is only about 12-20 days. White blood cells have a short lifespan because they continuously fight viruses, bacteria, as well as other disease-carrying pathogens in the body.
Platelets can be found in blood and the spleen. These blood cells are colorless and have a life cycle of only 8 -10 days.
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