MRSA is an example of directional selection in humans.
Methicillin-Resistant Staphylococcus aureus, also known as MRSA, is a kind of bacteria that can be potentially dangerous since it is resistant to some antibiotics and can cause skin infections and other types. Any S strain could be it. aureus that has acquired multiple drug resistance to beta-lactam antibiotics through horizontal gene transfer or directional selection.
Direct contact with an infected individual, touching surfaces or objects contaminated with the bacterium or exchanging personal things like infected towels or razors are all ways that MRSA is disseminated. Because so many people have weakened immune systems, it is therefore spreading quickly and directly throughout the healthcare industry.
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which disorder results from obstruction and distention of a lumen, causing decreased blood flow, ischemia, and bacterial invasion?
The condition is caused by the occlusion and abdominal distension of a lumens, which results in reduced blood flow, ischemic, and bacterial invasion is known as Appendix.
Appendiceal lumen occlusion is frequently the etiology of appendicitis. This may result from an appendicolith (appendix stone). The precise cause of acute pancreatitis is frequently unknown. Bacteria accumulate in the appendix as a result of obstruction of the appendiceal lumen, resulting in acute inflammation, perforation, and abscess formation. Despite being necessary, lymphoid hyperplasia causes swelling, localised ischemic, perforation, and the formation of a confined abscess or a true perforation with subsequent peritonitis.Appendicitis is brought on by an obstruction results in small vessel occlusion, lymphatic stasis, and a rise in luminal and intramural pressure. When blocked, the appendix begins to swell and fill with mucus. As lymph and vascular damage progresses, the appendix wall turns ischemic and necrotic. The restricted space then experiences bacterial overgrowth.
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the layer of soil bound by the mucigel and root hairs and containing microorganisms and sloughed off cells of the root cap is called the
Rhizosphere refers to the layer of soil that is bound by root hairs and mucigel, and which also contains microorganisms and cells that have shed off the root cap.
What purposes do microbes serve?Applications. Microorganisms are useful in the production of food, the treatment of waste water, the production of biofuels, and the synthesis of numerous compounds and enzymes. As model organisms, they are extremely useful in study. They have been turned into weapons and sporadic bioterrorism
Which microbe holds the most significance?Most Significant Microbe You've Never Seen Of A microbe called Prochlorococcus is responsible for producing one of every six breaths you take. The most numerous organism on Earth is a small bacterium, though.
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suppose two aabbcc individuals are mated. assuming that the genes are not linked, what fraction of the offspring are expected to be homozygous recessive for the three traits?
1 is a fraction of the offspring that are expected to be homozygous recessive for the three traits because gamete formed are only abc i.e. abc × abc .
You are seeking for a pair of alleles that are both lower case when we say homozygous recessive. In other words, the recessive feature will manifest itself phenotypically. The genotype that you would want in the Punnet would thus be: aabbcc only .
Heterozygous genotype refers to an organism with one dominant allele and one recessive allele. This genotype's designation in our case is Bb. Finally, homozygous recessive refers to an organism's genotype that consists of two recessive alleles i.e. bb
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AUG GGC UCA
Is this a strand of DNA or RNA, and how can you tell?
Uracil | SIELC
a
DNA because it has the sugar, Ribose
b
RNA because it has inorganic phosphate groups
c
RNA because it has the nitrogen base, Uracil.
d
DNA because it has the nitrogen base, Adenine
Answer:
RNA because it has the nitrogen base
you are using a variety of techniques to study how the risc complex differs between sirnas and mirnas. you found that what distinguishes a risc complex containing an sirna from one containing an mirna is that
RISC carrying siRNA differs from miRNA in having different argonaute proteins, as RISC (siRNA) can have argonaute 2 whereas the RISC (miRNA) can have argonaute 1-4.
A multiprotein complex called the RNA-induced silencing complex (RISC) contains one strand of a small interfering RNA (siRNA) or micro RNA (miRNA). The siRNA or miRNA serves as a template for RISC, which recognizes complementary mRNA. When it locates a complementary strand, RNase is triggered, and the RNA is cut. The RISC complex is similar for miRNA and siRNA, except in the type of protein (argonaute) associated.
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when sexual hormone production increases, bone growth a. accelerates rapidly; b. increases, but only in thickness; c. increases slowly; d. is not affected.
When sexual hormone production increases, bone growth accelerates rapidly.
What are sexual hormones?
Sex hormones are steroid hormones that interact with vertebrate steroid hormone receptors. They are also known as sex steroids, gonadocorticoids, and gonadal steroids. Androgens, estrogens, and progestogens are among the sex hormones . Their effects are mediated by both fast nongenomic mechanisms through membrane-associated receptors and signaling cascades as well as by slow genomic mechanisms through nuclear receptors. Although they serve significant sex-related roles, the polypeptide hormones luteinizing hormone, follicle-stimulating hormone, and gonadotropin-releasing hormone—all of which are connected to the gonadotropin axis—are typically not regarded as sex hormones.
Hence, sexual hormone production increases, bone growth accelerates rapidly.
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Are all living things made of cells?
Answer: Yes, All living organisms or things like animals or plants are made of cells.
Explanation:
Answer all please I need it asap
1. A(n) _____________________ transports electrons, along with their energy, to another molecule.
2. What is the equation for photosynthesis?
3. In the __________________________, NADPH and ATP combine with carbon dioxide to produce sugars.
4. In the _________________________, light energy from the sun splits water and generates ATP and NADPH.
5. True / False: Chloroplasts are organelles found in the cells of heterotrophs.
6. True / False: Autotrophs need light in order to carry out photosynthesis.
1. An electron carrier transports electrons and their energy to another molecule.
2. The equation of photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
3. In the stroma NADPH and ATP combine with carbon dioxide to produce sugars.
4. In the thylakoid membrane, light energy from the sun splits water and generates ATP and NADPH.
5. Chloroplasts are not found in heterotrophic cells.
6. Autotrophs need light to carry out photosynthesis.
Why are the answers correct?
An electron carrier is an important molecule involved in cellular respiration as it transports electrons, along with their energy, to another molecule.
Photosynthesis is the process by which plants and organisms such as algae use energy from the sun to convert water, and carbon dioxide to produce oxygen and sugar.
The stroma uses ATP and NADPH in the next stage of photosynthesis to produce three-carbon sugars.
The thylakoid membrane contains chlorophyll and is located in the stroma where the light energy from the sun splits water and generates ATP and NADPH.
In summary, chloroplasts are organelles found in the cells of autotrophs and not heterotrophs.
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in the absence of oxygen, the process of occurs to regenerate nad so that atp production in can continue.
Only glycolysis can convert glucose into ATP in the absence of oxygen. But since glycolysis produces NADH, it must be converted back into it in order to carry on metabolizing glucose.
What takes place during glycolysis?The method by which glucose is metabolized to release energy is known as glycolysis. It generates ATP, NADH, water, and two pyruvate molecules. It doesn't require oxygen to take place because it happens in the cytoplasm of a cell. In both anaerobic and aerobic organisms, it happens.
What are the principal purposes of glycolysis?Sugar molecules are broken down during glycolysis to release energy needed for cellular metabolism. The cell's cytoplasm is where it takes place. The primary goal of glycolysis is to create countless ATP molecules, which are then used for different types of cellular metabolism.
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all living organisms are defined by: please choose the correct answer from the following choices, and then select the submit answer button. answer choices the ability to consume other organisms and digest their tissues. the ability to replicate and metabolize energy. the presence of water and molecules containing carbon-hydrogen bonds. the presence of a nervous and digestive system. the ability to move and find a mate.
The ability to replicate and metabolize energy .
What is Carbon-hydrogen bonds ?Many organic molecules have the carbon-hydrogen bond, which is a chemical link between carbon and hydrogen atoms in chemistry. Since there is just one covalent link present, up to four hydrogen atoms can share the outer valence electrons that belong to carbon. This completes both of their exterior coverings and stabilizes them.
Covalent bonds, commonly known as carbon-hydrogen bonds, are necessary for the bonding of organic components. In order to ensure stability between the two atoms, carbon and hydrogen share an equal number of electrons.
What is Metabolize energy ?Metabolizable Energy (ME) is the energy that is still accessible for growth and reproduction as well as for sustaining metabolic processes like work (motion) and respiration after fecal and urine energy loss (thermoregulation, maintenance metabolism, HIF).
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what type of unauthenticated connection is considered to be a significant vulnerability of netbios systems?
The type of unauthenticated connection that is considered to be a significant vulnerability of NetBIOS systems is the NULL sessions.
A NULL session is an unauthenticated connection that occurs when someone logs in to a system without a username or password. Depending on the OS, his type is considered a significant vulnerability in the CIFS or SMB. It's because once a hacker has made a NetBIOS connection using a NULL session, they can get a list of all users and informations on that system, from usernames, passwords, groups, permissions, services, and more. It can even be used for performing DOS attacks and escalating privileges.
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1. As time passes, the universe becomes
1 more organized
2 less organized
3 simpler
4 smaller
Answer:
more organized
Explanation:
it would be more organized because of new inventions
In considering the water quality in and around the U. S. , the EPA analyzes critical chemical and physical states: oxygen, nutrients, pH, salinity, other chemicals and temperature, light, and hydrology including rainfall, flow rates, and sea level. All BUT ONE could be a pressure that results in the changes in chemical and physical states
Wastewater and fertilizer runoff can cause the changes in the EPA analyzes chemical and physical states. So option (c) is the correct answer.
Factors such as temperature, pH, electrochemical potential (redox), and air and water clarity can affect the chemical and physical properties of ecosystems. This is due to activities such as climate change, water pollution and changes in water runoff.
Sewage and fertilizer runoff reduce dissolved oxygen levels in water, affecting biotic communities and circulatory systems, leading to changes in chemical and physical conditions.
An EPA method for the analysis of 16 dissolved and total recoverable elements in a variety of water bodies, sediments, soils and sludges. The EPA method is a widely used performance-based guide for the analysis of 31 trace elements in groundwater, soils, sediments and solid wastes.
Complete question:
In considering the water quality in and around the U. S. , the EPA analyzes critical chemical and physical states: oxygen, nutrients, pH, salinity, other chemicals and temperature, light, and hydrology including rainfall, flow rates, and sea level. All BUT ONE could be a pressure that results in the changes in chemical and physical states
a) changes in sea level
b) water used for cooling purposes
c) wastewater and fertilizer runoff
d)eutrophication of bodies of water
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fetuses who do not survive anemia in utero are usually stillborn, with gross edema of the entire body, a condition called:
Answer:
Fetuses who do not survive anemia in utero are usually stillborn, with gross edema of the entire body, a condition called:
hydrops fetalis
Explanation:
when viruses are exposed to compounds or uv-light which make them non-infectious what are they called?
when viruses are exposed to compounds or UV light which makes them non-infectious are they called Inactive.
All virus particles have a protein coat that surrounds and protects their nucleic acid genome. This protein envelope is called a capsid, and the instructions for making the protein subunits of the capsid are encoded in the viral nucleic acid genome. Infections are caused by microscopic bacteria that enter the body and cause problems.
Some but not all infections are transmitted directly from person to person. Infections that are transmitted from person to person are considered contagious. Antibiotic resistance occurs when bacteria viruses fungi and parasites change over time and become unresponsive to drugs. This makes infections more difficult to treat and increases the risk of disease spreading serious illness and death.
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which of the statements describes the alimentary canal? the gastrointestinal tract and the organs of the digestive system the section of the digestive tract that is involved with absorption of nutrients the path that food travels from the stomach to the beginning of the large intestine the tubular passage through which food enters, is digested, and unused waste is excreted
The alimentary canal, commonly known as the digestive tract, as well as other organs like the pancreas and liver make up the digestive system.
The systems that food and fluids pass through on their way to being ingested, broken down, absorbed, and expelled as feces. The mouth, throat (throat), esophagus, stomachs, intestine, gastrointestinal tract, rectum, and anus are among these organs. The digestive system's four essential processes are motility, digesting, absorption, and secretion. From the mouth to the anus, the digestive system is known as the alimentary canal. The portion of it that consists of the gastrointestinal tract is known as the GI tract. Digestion and absorption are the two functions of the digestive system. Food is broken down into tiny molecules during digestion, and these molecules are subsequently absorbed by the body.
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the average day of third-grade students places them in what state, as described by brofenbrenner's ecological systems model, for the majority of the time?
According to Bronfenbrenner's ecological systems model, kids in the third grade spend the majority of their days in a student state.
According to Bronfenbrenner's ecological systems theory, a child's development is viewed as a complex system of interactions that are influenced by a range of environmental factors, from the child's immediate home and school environments to more general cultural values, laws, and practices.
The day's main portion (298 minutes) is spent within the student state. This mentality involves the learner being docile, obedient, and frequently irritated when focusing on or attempting to maintain attention on a task. Sometimes, this irritation is shown by lengthy pauses before pulling out the next book and looking for supplies.
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nflammation of a lymph vessel is: group of answer choices lymphocytosis. lymphadenitis. lymphangitis. lymphocytopenia.
Inflammation of a lymph vessel is lymphangitis.
Lymphangitis and lymphadenitis are common bacterial infection that is usually caused by hemolytic streptococci or S aureus they generally from an infected wound, cellulitis, or an abscess.
Lymphangitis is an infection of the lymphatic channels. lymphangitis can also be caused by parasitic infection filariasis or mycobacterial infection, they affect the area by causing swelling in common lymph nodes areas. lymphangitis is red streaks were reddish stripes is visible from the injury site to areas where you have a lot of lymph glands.
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What macromolecule does the human body use
as its primary energy SOURCE?
A. carbohydrates
B. nucleic acids
C. DNA
D. RNA
Answer:
A
Explanation:
"the most common form of human multiple birth is twins but cases of triplets,quadruplets,quintuplets,sextuplets,septuplets,and octuplets have all been recorded with all being born alive".how are they born?
Answer:
the uterus expands depending on the size or sizes of the baby or babies the babies will most likely live but the mother would be in great pain
Explanation:
Answer:
Explanation: The most common are strictly fraternal triplets, which come from a polyzygotic pregnancy of three eggs. Less common are triplets from a dizygotic pregnancy, where one zygote divides into two identical fetuses, and the other does not. Least common are identical triplets, three fetuses from one egg.
What are the base-pairing rules?
Answer:
The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
Explanation:
for Chargaff's rules
Answer: The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
Explanation:
Summarize the phases of cellular respiration
The phases of cellular respiration is glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidation phosphorylation and electron transport chain
Cellular respiration takes place in the cell of the living organism
There are three phase of cellular respiration
Glycolysis : glycolysis is the splitting of sugar comes from the Greek word sweet and lysis means to split and glycolysis is a series of reaction that extract energy from glucose by splitting it into two molecule of pyruvateKrebs cycle : also called as citric acid was discovered by Hans asolf Krebs in 1937 and it can be described as a metabolic pathway and that generated energy and this process happen in the mitochondrial matrix where pyruvate has been imported following glycolysisElectron transport chain : it is the stage involving the electron transport chain and the electron transport chain is the final stage in cellular respiration and it occur on the inner mitochondrial membrane and consist of several electron carrierKnow more about phases
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Construct a flowchart to describe the process by which a foreign gene is inserted into the genome
Genome editing is the process by which a foreign gene is inserted into the genome.
What is the process of inserting foreign genes into an organism?Animals given new genes by this method are called "transgenic." Their new genes are usually passed on to their progeny. These foreign genes can be conveyed, that is, make their protein products, which can consult new characteristics on the animal.
When foreign DNA is initiated into an organism, it is called a genetically modified organism or transgenic organism. It is inserted with the help of vectors into the receiver organism. It then becomes an integral part of the host's genome like other indigenous genes, due to recombination.
So we can conclude that A transgenic, or genetically modified organism is one that has been altered through recombinant DNA technology.
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Why are zygotes considered unique?
Answer:
Each zygote has its own combination of genes
Explanation:
Marine Science
Why isn’t the atmosphere a closed system?
a. closed systems only exist in theory
b. closed systems are only for liquids, not gases.
c. The laws of physics do not apply to the atmosphere.
d. Gases from Earth escape from the higher realms of the atmosphere.
The answer to Why isn’t the atmosphere a closed system?
D. Gases from Earth escape from higher realms of the atmosphere.
Explanation:
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identify the major structures and functional areas of the cerebral cortex and cerebrum including the basal nuclei
The cerebrum, cerebellum, and brainstem are the three major components of the brain. The brain's main structure, the cerebrum, is made up of the right & left halves.
Describe the cortex.Your cerebral cortex, which is located on atop of your cerebrum, is its outer layer. The greatest part of your brain is called your cerebrum. The corpus callosum, a network of nerve fibers, connects the hemispheres together.
What bodily organ is the cortex?The term "cortex," which is Latin for "bark," refers to the cerebrum's outer layer of gray matter. Due to it's own folds, the brain has a huge surface area and makes up nearly half of the weight of the brain. There are two parts to the cerebral cortex:
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the lungs do not normally collapse because of group of answer choices their characteristic elastic recoil both surfactant and intrapleural pressure none of the choices are correct intrapleural pressure surfactant
The lungs do not normally collapse because of both surfactant and intrapleural pressure.
The two spongy, pinkish-gray organs in your chest are called lungs. Air enters your lungs when you inhale (breath), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out).
The pressure drop lowers the intrapulmonary pressure as well, which causes the lungs to open up and take in more air. This action is the opposite after the timer expires. The pleural cavity's negative pressure acts as a suction to prevent the lungs from collapsing.
The lung cells secrete surfactant, which distributes throughout the alveolar tissue. By reducing surface tension, this chemical facilitates breathing by preventing the alveoli from collapsing following exhalation.
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discussing the major body systems on the circulatory system.
The parts of your circulatory system are your: Heart, a muscular organ that pumps blood throughout your body. Blood vessels, which include your arteries, veins and capillaries. Blood, made up of red and white blood cells, plasma and platelets.
Circulatory system is made up of the following components: The heart is a muscular organ that circulates blood throughout your body. Blood vessels are made up of arteries, veins, and capillaries. Blood, which is composed of red and white blood cells, plasma, and platelets.
Your circulatory system transports oxygen and nutrients to your body's other cells, then collects any waste products produced by these cells, including carbon dioxide, and transports these waste products to your kidneys and lungs for disposal.
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If a woman is homozygous for red hair and her husband is homozygous for brown hair, what is the probability that they will have a redheaded child?
A. 0%
B 100%
c. 50%
To solve this we must be knowing each and every concept related to homozygous. Therefore, 0% is the probability that they will have a redheaded child. The correct option is option A.
What is homozygous?Having identical genes for only one attribute is what is meant by being homozygous. Additionally, an allele denotes a single distinct variant of a gene.
Since it is unknown which characteristic is recessive. If we think of brown hair as the dominant characteristic, denoted by R, and red hair as the recessive trait, signified by R. Dad is RR, while mom is RR. All offspring will be heterozygous since they will all be Rr. The likelihood of producing a kid having red hair from either the original parents is thus 0%.
Therefore, 0% is the probability that they will have a redheaded child. The correct option is option A.
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describe the structure of a molecule of hemoglobin and explain the role played by iron in the transport of oxygen.
Hemoglobin's structure has four heme groups, each has an iron molecule within the center used to bind and carry oxygen throughout the body.
The delivery of oxygen to the blood is one among iron's most significant roles. The first function of iron is to transport oxygen throughout your body in the hemoglobin of red blood cells so that your cells can make energy. Additionally, iron enhances myoglobin's capacity to store oxygen.
What about hemoglobin?Red blood cells include the protein hemoglobin, which transports oxygen to your body's organs and tissues and carbon dioxide from those tissues back to your lungs. You have a low red blood cell count if a hemoglobin test reveals that your hemoglobin level is lower than normal.When you have anemia, your body doesn't produce enough healthy red blood cells to provide your tissues with enough oxygen. Being anemic, or having low hemoglobin, can cause you to feel exhausted and frail. Anemia can have many various forms, each with a singular etiology. Your blood's hemoglobin helps carry oxygen from your lungs to your tissues. In muscle cells, myoglobin receives, transports, stores, and releases oxygen. By making dietary modifications and using supplements, many of us can increase their hemoglobin levels. To establish the proper supplement dosage, consult a physician. An individual might require additional therapy,like a blood transfusion, if their hemoglobin levels are still low. Your illness or injury is causing blood loss. Every time you lose blood, you lose iron. Women can experience low hemoglobin levels during their periods. If you’ve got internal bleeding, like a bleeding ulcer, you’llpotentially lose blood.Learn more about hemoglobin here:
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