Metformin and longevity (METAL): a window of opportunity study investigating the biological effects of metformin in localized prostate cancer is totally based on the working of metformin .
What is Metformin? A biguanide oral hypoglycaemic drug called metformin is frequently prescribed to treat type 2 diabetes mellitus. Metformin has been linked to a decreased risk of cancer incidence of a number of solid tumors, including prostate cancer, in addition to its anti-diabetic impact (PCa).The biochemical mechanisms behind these observations in PCa have not yet been thoroughly characterized. The formation and progression of PCa are thought to be influenced by high insulin and insulin-like growth factor-1 (IGF-1) levels, hence one theory is that the indirect insulin reducing impact may have an anti-neoplastic effect.To learn more about Metformin with the given link
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What conclusion can be made if the cell margins of a biopsy are clear when observed under a microscope
The cancer has not invaded other tissues is the conclusion which can be made if the cell margins of a biopsy are clear when observed under a microscope in this scenario.
What is Biopsy?
This medical procedure involves taking sample of cells or tissues from parts of the body and observing it under a microscope.
The microscope function is to enlarge the objects which are positioned on the objective lens thereby making it possible for them to be seen more clearly and accurately.
If the cell margins of a biopsy are clear when observed under a microscope, it means the cancer hasn't invaded other parts while in a scenario where the cell margins are crowded then it depicts the presence of cancerous cells thereby making it the most appropriate choice.
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How does the structure of the digestive tract in different invertebrate groups affect the size of the organisms that they can eat
Answer:
Sponges and Cnidarians have a central body cavity and not a digestive system
Explanation:
The close contact between newborns and family members allow them to become ________ with microbes that become established as their microbiota. (Choose the most accurate term.)
The close contact between newborns and family members allows them to become colonized with microbes that become established as their microbiota.
What is microbiota?The microbiota refers to the microorganisms that form part of the digestive system of an individual.
Newborns do not have microbiota and they acquire it by contact with family members.
In conclusion, the close contact between newborns and family members allows is required for the establishment of the microbiota.
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A farmer stopped maintaining a field that was once used to grow crops. Overtime the field eventually became a forest. These changes us illustrates the process of
Answer:
secondary succession
Explanation:
the ecological succession that occurs after primary succession.
Psl 250 when the ventricles are contracting, blood is flowing through which valves?
Pulmonary valve and Aortic valve
During systole, the aortic and pulmonic valves open to permit ejection into the aorta and pulmonary artery.
What happen when ventricles contract ?When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery
Then it travels to the lungs. In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left atrium.When the left ventricle contracts, it forces blood through the aortic semilunar valve and into the aorta. The aorta and its branches carries the blood to all the body's tissues.Learn more about Ventricles here:
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What is the prominent red blood cell (rbc) morphologic feature found in lead poisoning (plumbism)?
The basophilic stippling is a prominent red blood cell, morphologic feature found in lead poisoning (plumbism).
The basophilic stippling is a frequent manifestation of hematologic disease in the peripheral blood, and it is also observable in bone marrow aspirates.
The lead poisoning inhibits the ability to produce hemoglobin by interfering with enzymatic steps in the heme synthesis pathway and reduce red blood cells, which results in the increasing risk of anemia.
The interference of lead in the development of RBCs results as the exposure to a very small amount of lead greatly changes the surface of the red blood cells. The permeability of water gets altered which results in shrinking and so they aren't capable of swelling up like other normal cells.
The hematologic system is involved with lead poisoning where one can find anemia as a result of it.
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You were hired by the South Carolina Department of Health and Environmental Control( DHEC) to pick the best location for a major South Carolina fishing tournament along one of its rivers. Since you cannot visit each of the locations In order to make your selection you request river quality data. Based on the data received, which river would you select to host the fishing tournament? In your response be sure to address dissolved oxygen, pH, specific conductance, temperature, and turbidity.
Grading Criteria:
Student identified the best river to hold the tournament. ( 1 point)
Student mentions dissolved oxygen in response. ( 1 point)
Student mentions ph in response. ( 1 point)
Student mentions specific conductance. ( 1 point)
Student mentions temperature. ( 1 point)
Student mentions turbidity in response. ( 1 point)
Some of the criteria that are important to select a good quality river for a fishing tournament are:
dissolved oxygen, pH, specific conductance, temperature, turbidity.The above factors are important because the amount of oxygen (dissolved oxygen) in a river has lower dissolved oxygen than fast running bodies of water and this would show the presence of fish.
What is Water Quality?This refers to the biological, chemical, and physical characteristics of a body of water that shows the condition of the water.
Hence, to ensure that a fishing competition is able to hold in a river based on the request by the South Carolina Department of Health and Environmental Control( DHEC), the above-listed factors should be of good quality so people can catch fish and keep the ecological balance.
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Visual examination of his chest reveals that the lower portion of the sternum is depressed. Auscultation of the lungs and heart is unremarkable. What disorder of the thorax best describes these findings
The person might be suffering from pectus excavatum or funnel chest.
Pectus excavatum
The funnel chest is caused by the depression formed towards the lower portion of the sternum. The deformation of the sternum can be symmetrical or one side might be more prominent than the other. Such a condition can affect the normal functioning of the heart and lungs and might induce a feeling of insecurity in the children because of their body shape. Funnel chest is more common in young males than in females and its symptoms include
BreathlessnessChest painFatigueDizzinessTachycardiaIt can be present during birth or may develop as the child grows. An X-ray or a CT scan is used to diagnose the patient. Cardiopulmonary exercise testing (CPET), heart scans, breathing tests, etc are used to gauge the severity of the condition. Most often people with such conditions are able to live a normal life.
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What are four possible phenotypes in this dihybrid punnett square?
The superior region of the right ventricle narrows before it leads into the ______. Multiple choice question.
Pulmonary trunk
The right ventricle pumps deoxygenated blood into the pulmonary trunk, which leads toward the lungs and bifurcates into the left and right pulmonary arteries.
What is Pulmonary trunk ?The pulmonary trunk is a major vessel of the human heart that originates from the right ventricle. It branches into the right and left pulmonary arteries, which lead to the lungs.
It divides into the left and right pulmonary arteries, which carry blood with relatively low oxygen content and high carbon dioxide content into the lungs.The pulmonary trunk is approximately 50 mm long and 30 mm wide (most authors use 29 mm in males and 27 mm in females (axial width) as the cut-offs of normal 1,5).Learn more about Pulmonary trunk here:
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Match the organism to the infection: Group of answer choices Streptococcus pyogenes [ Choose ] Varicella zoster [ Choose ] Papillomavirus [ Choose ] Enterococcus faecium [ Choose ] Borrelia burgdorferi [ Choose ] Bordetella pertussis
S. pyogenes causes Strep throat, Varicella zoster causes varicella, Papillomavirus causes HPV, E. faecium cause urinary tract infection B. burgdorferi causes Lyme disease and B. pertussis causes Pertussis.
What is Bordetella pertussis?Bordetella pertussis is a bacteria from the genus Bordetella that causes a respiratory disease known as Pertussis.
Moreover, Bordetella burgdorferi is another bacteria from genus Bordetella that causes Lyme disease, an illness whose symptoms include fever and fatigue.
In conclusion, Streptococcus pyogenes causes Strep throat, Varicella zoster causes varicella, Papillomavirus causes HPV, Enterococcus faecium cause urinary tract infection Borrelia burgdorferi causes Lyme disease and Bordetella pertussis causes Pertussis.
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The primary function of the nephron loop is to generate a medullary ecf osmotic gradient that allows for what?.
The primary function of the nephron loop is to generate a medullary ecf osmotic gradient that allows reabsorption of water and sodium chloride from the filtrate.
What is a nephron loop?
Nephron loop is also known as Henle loop. The descending limb and ascending limb of the nephron loop are U-shaped tubes with different permeabilities. Normally, the collecting duct and distal convoluted tubule are impervious to water, but hormone stimulation during homeostasis changes this.nephron is present in U-shape and extends through the medulla of the kidneyFunctions of nephron loop:
Its major function is to reabsorb sodium chloride and water from the filtrate. By conserving water, the organism can produce urine that is extremely concentrated.To learn more about nephron loop visit:
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The primary function of the nephron loop is to generate a medullary ecf osmotic gradient that allows reabsorption of water and sodium chloride from the filtrate.
What is a nephron loop?
Nephron loop is also known as Henle loop.
The descending limb and ascending limb of the nephron loop are U-shaped tubes with different permeabilities.
Normally, the collecting duct and distal convoluted tubule are impervious to water, but hormone stimulation during homeostasis changes this.
nephron is present in U-shape and extends through the medulla of the kidney
Functions of nephron loop:
Its major function is to reabsorb sodium chloride and water from the filtrate.
By conserving water, the organism can produce urine that is extremely concentrated.
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The contraction of striated muscle is initiated by the release of energy in the presence of
The contraction of striated muscle is initiated by the release of energy in the presence of calcium ion
What is a muscle?A muscle can be defined as soft and band of fibrous tissue in a human or animal body that has the ability to contract to produce movements of the body parts
I'm conclusion, the contraction of striated muscle is initiated by the release of energy in the presence of calcium ion
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Why did Mendel use pea plants in his experiments?
Children in northern regions experience months of inadequate sunlight exposure on the skin. to prevent possible abnormal bone development, what essential organic nutrient is necessary in the diet?
Children in northern regions experience months of inadequate sunlight exposure on the skin. to prevent possible abnormal bone development, cholecalciferol is an essential organic nutrient is necessary in the diet.
In some foods and as a dietary supplement, cholecalciferol, sometimes referred to as vitamin D3 and cholecalciferol, is a form of vitamin D that is produced by the skin when it is exposed to sunlight.People who reside in subpolar and polar regions need more vitamin D. Long winter nights cause less sun exposure, which explains why.Inuit bodies have adapted to the cold, a diet high in meat, and a low UVB environment where vitamin D production in the skin is difficult.The majority of people who live in northern latitudes require vitamin D during the winter to maintain adequate amounts of circulating 25(OH)D3 for maintaining good body function and preventing illnesses.learn more about cholecalciferol here: https://brainly.com/question/4551554
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4. Which of these is an example of a vertebrate?
snails
frogs
sea stars
squid
Frogs are the vertebrates as they possess a backbone. The others fall under invertebrates as they do not possess a backbone.
Animals can be classified based on the presence or absence of a backbone. Vertebrates are animals with a backbone.
Vertebrates are classified into five subgroups:
Mammals : Mammals are warm blooded vertebrate animals that possess mammary glands and feed their young ones with the milk produced from their mammary glands. Example : cats, dogs etc.Birds : Birds are warm blooded vertebrate animals that have the ability to lay eggs and possess a beak, feathers and a lightweight skeleton. Example : pigeon, eagle etc.Reptiles : Reptiles are cold blooded vertebrate animals that possess limbs. dry scales on their skin and can also lay eggs. Example : crocodile, tortoises etc. Amphibians : Amphibians are also cold blooded vertebrate animals that spend their lives partly in water and partly in land. Example : frogs, salamanders etc.Fish : Fish are cold blooded vertebrate animals that live in water, possess fins and gills and can produce eggs. Example : sharks, catfish etc.Learn more about vertebrates at
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Answer:
Frogs
Explanation:
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ntist is conducting an investigation that involves water, silver, carbon dioxide, and oxyg
group of statements best describe all of the materials he is using in the investigation?
ley are each compounds. Each of the compounds is made of atoms. All of the atoms an
ney are each made of matter. Some are compounds and some are elements. They all c
ney are all elements. Some contain molecules of the same type of atom. Some contain
hey are each made of matter. Some are compounds made of one type of element. Som
The correct option is (d)They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
Any substance with mass and volume is considered matter because it occupies space. Water is a substance that is created when Hydrogen and Oxygen are combined in a fixed ratio (2 H: O) with a chemical link. The elemental metal silver can be found in nature in its metallic form. Carbon is an element, and carbon dioxide as a compound is created when elements of carbon and oxygen are joined in a specific ratio to form the gas.
They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
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Comparing plant and animal cells Drag the correct label under each cell structure to identify whether it is found only in animal cells, only in plant cells, or in both types of cells. Labels can be used once or more than once.
The correct answers are:
Lysosome - found in ANIMAL cells but not most plant cells
Cell wall - found in PLANT cells but not animal cells
Nucleus - found in both PLANT and ANIMAL cells
Chloroplast - found in PLANT cells but not animal cells
Rough endoplasmic reticulum (ER) - found in both PLANT and ANIMAL cells
CellsAll biological things are constructed from simple units called cells. Millions of billions of cells make up the human body. They give the body structure, absorb nutrients from the diet, transform those nutrients into energy, and perform certain tasks. Furthermore, cells may replicate themselves and hold the body's genetic material.
The various components of cells each serve a unique purpose. Organelles are specialized structures that carry out particular functions for the cell among these other sections. All biological things are constructed from simple units called cells. All biological things are constructed from simple units called cells. Millions of billions of cells make up the human body.
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Which of the situations is an example of the crowding-out effect on investment as it pertains to macroeconomics?
The crowding out effect is an economic theory arguing that rising public sector spending drives down or even eliminates private sector spending. Crowding out of investment is defined as a situation when increased interest rates lead to a reduction in private investment spending such that it dampens the initial increase of total investment spending is called crowding out effect. The impact of crowding out can be increased government borrowing and spending causing a reduction in private spending. Because government borrowing increases the cost of private loans and uses up capital that may have been deployed elsewhere, businesses and individuals don't borrow or spend as much money.
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Answer: Jack wants to borrow money to create a cowboy-themed inflatable bounce house for kids called "Wild Wild West." However, the government is running a deficit which has increased interest rates so much that Jack can no longer afford to borrow the money.
When your cell makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by which action?
When cells makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by removing a phosphate group from ATP, producing energy plus ADP plus phosphate.
What is ATP?This is referred to as adenosine triphosphate and is the energy currency of the cells.
This is usually formed from the synthesis of ADP and a phosphate group thereby making it the most appropriate choice.
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Methicillin is an example of the beta-lactam class of drugs that?
Answer:
Meticillin (INN, BAN) or methicillin (USAN) is a narrow spectrum beta-lactam antibiotic of the penicillin class.
Explanation:
Like other beta-lactam antibiotics, methicillin acts by inhibiting the synthesis of bacterial cell walls. It inhibits cross-linkage between the linear peptidoglycan polymer chains that make up a major component of the cell wall of gram-positive bacteria.
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Answer:
target gram-positive bacteria
Explanation:
To be specific, they block the synthesis of the bacterial cell wall that is composed of peptidoglycan which methicillin targets
plan an investigation on how temperature affects seed germination.
Answer:
Moisture, hormone production, and enzyme activity. For seeds to germinate, they need to imbibe water. For this to occur, sufficient moisture must be present. A warmer climate may increase evaporation and decrease moisture, which would negatively affect germination.
A neurotransmitter binds to a metabotropic receptor and pka is ultimately activated, which type of neurotransmitter likely bound?
A Final statement or concluding statement
Adrenergic neurotransmitter is likely to bound.
What neurotransmitter activates adrenergic receptors?The neurotransmitter norepinephrine (NE) is released by adrenergic nerves and binds to specific receptors in the target tissue to produce physiological responses. The binding of neurotransmitters to receptors activates signal transduction pathways, resulting in the observed changes in cardiac function.
Adrenergic receptors (adrenoceptors) are receptors that bind adrenergic agonists consisting of the sympathetic neurotransmitter NE and the circulating hormone epinephrine (EPI). The maximum essential adrenoceptor withinside the coronary heart is the β1-adrenoceptor. When activated via way of means of a β1-agonist consisting of NE or EPI, coronary heart charge is elevated conduction pace is elevated contractility is elevated, and the charge of myocyte rest is elevated.
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Which action is characteristic of the hormone vasopressin?
ADH increases arteriole constriction and tubular permeability to water
Vasopressin, also referred to as antidiuretic hormone (ADH), is a hormone secreted by the posterior pituitary gland. Arteriole constriction and tubular permeability to water are both increased by ADH. Calcitonin and parathyroid hormone levels in the blood regulate calcium equilibrium (PTH). the hormone that aids in blood vessel constriction and aids the kidneys in regulating the body's salt and water balance. This aids in regulating both blood pressure and urine production.
Sensors (baroreceptors) in the heart and big blood vessels can identify a drop in blood volume or low blood pressure that happens after dehydration or a hemorrhage. These encourage the secretion of anti-diuretic hormones.
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This glaucoma treatment may be used to create a new opening for the escape of aqueous humor from the anterior cavity of the eye, thus relieving intraocular pressure:
This glaucoma treatment may be used to create a new opening for the escape of aqueous humor from the anterior cavity of the eye, thus relieving intraocular pressure: trabeculectomy
What does Glaucoma mean?
A collection of eye conditions known as glaucoma can result in vision loss and blindness by harming the optic nerve, a nerve located in the back of the eye. You may not notice the symptoms at first because they can appear gradually. Getting a thorough dilated eye exam is the only method to determine if you have glaucoma.
Glaucoma is a lifelong condition and should be referred to as a permanent disorder because it can be managed conservatively.
The procedure of treating glaucoma with surgery is known as trabeculectomy. Trabeculectomy is a filtering surgery where an ostium is created into the anterior chamber from underneath a partial thickness scleral flap to allow for aqueous flow out of the eye.
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(a) Define a microscope.
(b) List three uses of a compound microscope.
(c) Tabulate 5 differences between optical microscope and electron
microscope
(a) Briefly account on how microscope was discovered.
(b) State two uses of magnifying lenses
(c) Distinguish between the types of magnifying lenses
Answer:
A microscope is an laboratory instruments that can be used to observe small objects,even cells.
Photodecomposition, photomutagenicity and photocytotoxicity of retinyl palmitate under He-Ne laser photoirradiation and its effects on photodynamic therapy of cancer cells in vitro
The effects on photodynamic therapy of cancer cells in vitro is that retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.
HeLa cells with or without RP (retinyl palmitate) that was incubated with the cells for a short or long incubation period prior to PDT are typically used to test the effects of PDT (photodynamic therapy) using hematoporphyrin derivatives (HpD) as photosensitizer under He-Ne laser irradiation.
No photodecomposition of RP alone is visible, but a small amount is seen of in the presence of HpD under He-Ne laser irradiation is seen. No photomutagenicity is often seen under laser irradiation. HeLa cell viability can be dramatically reduced by RP alone. A 24 hour incubation period before PDT increased the cytotoxicity of PDT on HeLa cells.
Therefore, retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.
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In the movement of water across a selectively permeable membrane lab. What substance was actually able to pass through the membrane?
If the membrane is selectively permeable or semipermeable membrane molecules, such as hydrocarbons and oxygen can only cross the cell membrane.
Larger molecule like hydrocarbons and carbon cannot cross the cell membrane . water can only cross between the lipids .Hence ,Osmosis is a special type of diffusion, that allows diffusion of water across a semipermeable membrane. Water readily crosses a membrane down its potential gradient from high to low potential. Osmotic pressure is the force required to prevent water movement across the semipermeable membrane. Any substance crosses the cell membrane by two basic ways passive transport, which requires no energy; and active transport, which requires energy.
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If one day you are less able to recognize familiar sounds, this lobe of the cortex is probably at fault?
If one day you are less able to recognize familiar sounds, Temporal lobe of the cortex is probably at fault.
One of the cortex's four main lobes is the temporal lobe. It is primarily in charge of deciphering the sounds coming from the ears and is crucial for understanding and using language. The temporal lobe collaborates with other neural regions to form fresh, long-term memories, and it aids in object recognition as well.It is also thought that the temporal lobes are crucial for processing affect/emotions, language, and some facets of visual perceptionThe left side of the dominant temporal lobe, which is the side in most people, is involved in verbal learning and memory as well as language comprehension.People who suffer temporal lobe lesions have trouble categorizing words, sounds, or visuals. Damage to the temporal lobe can have an impact on language.learn more about temporal lobe here: https://brainly.com/question/1004131
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Describe the activities of the enzymes required to construct a recombinant dna molecule.
Recombinant DNA is the approach of becoming a member of two or greater DNA molecules to create a hybrid. The technology is made possible via sorts of enzymes, limited endonucleases, and ligase. A limit endonuclease acknowledges a specific collection of DNA and cuts within, or close to, that series.
Recombinant DNA is the method of joining or extra DNA molecules to create a hybrid. The technology is made possible via forms of enzymes, limited endonucleases, and ligase. A limit endonuclease acknowledges a specific sequence of DNA and cuts within, or near, that collection.
A recombinant DNA molecule is produced by using joining together two or greater DNA segments typically from different organisms. greater especially, a recombinant DNA molecule is a vector (e.g. plasmid, phage, or virus) into which the preferred DNA fragment has been inserted to enable its cloning in the proper host.
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