how long is the auditory canal
The american cancer society currently estimates that only about 10% of all people with melanoma have a family history of the disease. What factors might contribute to the development of melanoma in the other 90% of patients?.
The factors that might contribute to the development of melanoma in other 90% of patients is: all the given choices i.e., exposure to solar radiation, mutations in a melanocyte and exposure to chemical mutagens.
Melanoma is the cancer of the skin. It develops on the melanin pigment producing cells called melanocyte. It is also called the black tumor and is the most dangerous kind of skin cancer. Redness on the skin and change in the existing mole are a few symptoms.
Mutagens are the agents that cause cancer in the body. There are two types of mutagens: chemical and physical. The chemical mutagens can be alkylating agents, tobacco products, etc. The physical mutagens are the electromagnetic radiations.
The question is incomplete, the complete question is:
The American Cancer Society currently estimates that only about 10% of all people with melanoma have a family history of the disease. What factors might contribute to the development of melanoma in the other 90% of patients?
exposure to solar radiationmutations in a melanocyteexposure to chemical mutagensAll of these choices are correct.To know more about mutagens, here
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Write a minimum of three paragraphs to explain how your favorite organism demonstrates the eight characteristics of life.
WRITE USING THE BACTERIA CAUSE IT IS MY FAVORITE ORGANISM.
Answer:
The bacteria in our our bodies help degrade the meals we eat, help make vitamins on hand to us and neutralize toxins, to identify a few examples[7]; [8]. Also, they play an imperative function in the defense against infections by protecting colonized surfaces from invading pathogens[8]; [9]. What are bacteria? What is the definition of bacteria in biology? Bacteria are described as organisms that are microscopic, unicellular, independently reproducing, and on the whole free-living. Bacteria are ubiquitous in nature. They are structurally easy however functionally complex organisms that shape the foundation of all life on earth. Most bacteria, barring a few, are beneficial for their environment. They play a variety of vital roles in the ecosystem such as breaking down the toxic components, recycling the nutrients, fixing nitrogen in the soil from the air, amongst many others.
a group of experimental drugs focuses on blocking the construction of neurofibrillary tangles by keeping tau protein anchored to microtubules as a possible treatment for
Answer:
Alzheimer's disease
Explanation: did this in my biology class as well hope it helps though
A group of experimental drugs focuses on blocking the construction of neurofibrillary tangles by keeping tau protein anchored to microtubules as a possible treatment for Alzheimer's disease.
Neurofibrillary tangles are abnormal aggregations of tau protein that accumulate inside neurons in the brains of individuals with Alzheimer's disease. These tangles disrupt the normal functioning of neurons and contribute to the progression of the disease. Therefore, developing drugs that target the formation of neurofibrillary tangles is a potential therapeutic approach for Alzheimer's disease.
The experimental drugs mentioned in the statement aim to block the construction of neurofibrillary tangles by keeping tau protein anchored to microtubules. Tau protein normally plays a critical role in stabilizing microtubules, which are essential components of the cell's cytoskeleton responsible for maintaining cell shape and facilitating intracellular transport.
In Alzheimer's disease, abnormal modifications of tau protein cause it to detach from microtubules, leading to the formation of neurofibrillary tangles. These experimental drugs are designed to prevent the detachment of tau protein from microtubules, keeping it anchored and inhibiting the formation of tangles.
By maintaining the proper function of microtubules and preventing the aggregation of tau protein, these drugs aim to slow down or halt the progression of Alzheimer's disease. The potential benefits include preserving neuronal integrity, reducing cognitive decline, and improving overall brain function in affected individuals.
However, it is important to note that the effectiveness and safety of these experimental drugs are still being studied, and they have not yet been approved for clinical use. Ongoing research is vital to further understand the mechanisms involved and to develop effective treatments for Alzheimer's disease.
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A geneticist found that a particular mutation did not affect the protein coded by a gene. What do you think is the most likely type of mutation in this gene? Why?
Mutation that did not affect the protein coded by a gene is silent point mutation .
Silent mutations generally occur when the shift of a single DNA nucleotide within a protein-coding portion of a gene does not disturb the sequence of amino acids that make up the gene's protein. Mutations that cause the modified codon to produce an amino acid with identical functionality are also classified as silent.
Silent mutation can some times be harmful it may cause pause during reading of genes .Many studies have also shown how silent mutation is responsible for many life threatening disease like breast cancer .
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HELP WILL GIVE BRAINLY IF RIGHT
an atom is stable if the outer level of electrons in atom contains the maximum number of electrons it can hold. what are the electrons found in the outer level called?
valence electrons
ionic electrons
shared electrons
bonding electrons
In multicellular organisms, cell division allows them to do which of the following?
a) develop from a single cell into a multicellular organism
b) all are correct
c) grow (i.e., increase the size of the organism)
d) make other cells to repair and replace worn-out cells
In multicellular organisms, cell division allows development from a single cell into a multicellular organism, growth and making other cells to repair and replace worn-out cells (Option b all are correct).
What is mitosis?Mitosis is a cell division process by which multicellular organisms can grow, repair tissues and also develop from a single cell called the zygote. This process is fundamental during the lifespan of multicellular life forms.
Therefore, we can conclude that mitosis is a multipurpose cell division process in multicellular organisms because it allows to growth and repair of tissues.
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order the levels of organization from smallest (top) to largest (bottom)
A living thing
A collection of one species in a habitat
All species living in an area
Everything in a location, both living and nonliving
Briefing :An organism is a living thing. A living region only contains one species of the same species. The term "all species residing in a place" refers to all local organisms. An area's biotic and abiotic components both comprise living and nonliving elements.
What are the five organizational tiers of an ecosystem?Researchers in the field of ecology focus on five major levels: organism, population, community, ecosystem, and biosphere. These levels are sometimes studied separately and other times they overlap.
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I understand the question you are looking for :
order the levels of organization from smallest (top) to largest (bottom)
A group of the same species in a living area, all living and nonliving things in an area, a living thing, all species living in an area
Which kingdom does this organism most likely belong?
A. Plantae
B. Animalia
C. Fungi
D. Protista
A scientist trying to amplify the green fluorescent protein (gfp) gene from a sample of jellyfish dna would primarily use which technology to separate the gfp gene from the rest of the dna? polymerase chain reaction gel electrophoresis artificial selection genetic engineering
The technology that needs to be used to separate the GFP gene from a sample of jellyfish from the rest of the DNA is gel electrophoresis.
What is gel electrophoresis?Gel electrophoresis is a technique used in molecular biology laboratories to separate molecules according to the electrical charges and size. DNA has a negative charge, thereby this molecule can be separated according to the size of its fragments that migrates to the positive pole.
Therefore, we can conclude that gel electrophoresis is a technique used to separate fragments of DNA in a sample.
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Other than oxygen the level of what substance needs to be maintained to give cells a constant supply of energy
Answer:
glucose
Explanation:
its stored in the mitochondria as Adenosine 5'-triphosphate
what type of chemical bond is shown in the diagram ?
Answer:
covalent bond
Explanation:
covalent bond involve sharing of electrons between atoms
A gene has three exons that are 140, 230, and 130 bp, respectively. Intron 1 is 125 bp and intron 2 is 95 bp. How long is the properly spliced mature rna transcript?.
The properly sliced mature RNA transcript will be 500 bp long due to the presence of exons.
Exons are the part of the genome that encode for the genetic information. These are present in a fully mature RNA as they are essential for the formation of protein. If a gene contains three exons with length 140, 230, and 130 bp, then the length of its mature RNA will be the sum total of all the exons only. Therefore the length is 500 bp.
Introns on the other hand are the sections of the gene that are removed by the process called splicing. However they are still important as they provide the opportunity to the gene for making various different combinations. Thus, introns have evolutionary significance.
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Which organ is best described as one in which there are some cells, there is more ground substance than extracellular fibers, and the ground substance is solid at maturity?.
Answer:
The femur or thigh bone. It's the longest, strongest bone in your body. It's a critical part of your ability to stand and move. Your femur also supports lots of important muscles, tendons, ligaments and parts of your circulatory system.
Explanation:
Hope it helps! =D
If the top level consumers were eliminated from a food web would the populations in the levels below them increase without bounds why or why not
If the top-level consumers were eliminated from a food web, then the populations in the levels below them would decrease due to the disequilibrium in the homeostasis of the ecosystem.
What does the homeostasis of the ecosystem mean?The expression homeostasis of the ecosystem makes reference to all relationships between biotic and abiotic factors in an ecosystem which are fundamental to maintaining the state of internal equilibrium of complex biological ecosystems.
The elimination of top consumers in a trophic chain will lead to the disequilibrium of the ecosystem because it would produce an increase in the organism located immediately below, and then organisms located at two trophic levels below would decrease as a consequence of the increase in the number of consumers.
Therefore, we can conclude that ecosystems are delicate complex biological systems where all trophic levels are related and maintain an equilibrium.
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Need help answer all 5 questions asap I need to turn it in 15 minutes some please help giving 30 points
Answering all 5 questions:
Answer 1: As shown in the picture- deer is one such biotic factor and water is an abiotic factor.
Answer 2: As an organism's survival, both biotic and abiotic play crucial parts in every organism's life. Abiotic factors are limited on this earth and with the growing population of organisms ( plants and animals), competing for getting basic things needs to become an edge for survival by parasitism, mutualism, and commensalism.
2 biotic factors like plants(food) and animals( meat) and 2 abiotic factors like soil and water- with these 2-2 biotic and abiotic factors, human beings as an organism compete with other human beings for survival.
Answer 3: Plants cannot move, however, from the germination of a seed to a fully grown-up tree, it requires space, sunlight, water, minerals, and air for which plants also compete with other trees and even with human beings for water consumption and space.
Answer 4: If animals living in arctic regions start experiencing global warming effects, they do three things: move, adapt or die. In adaptation, to the change in temperature, arctic animals may change their behavior and become less vulnerable to heat. They may also witness some body shape changes within themselves.
Answer 5: food chain is a chain of organisms where one organism acts as food for another organism to maintain the population of each organism. While food web is a collection of all food chains that exist in the ecosystem from an ant to a big elephant or a powerful lion.
Food chain and food web help in balancing the whole biodiversity of the environment.
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The blood brain barrier is formed by the processes of myelinating oligodentrocytes, and prevents the movement of many hydrophilic molecules from the circulation into the brain. True or false?.
False
Blood-brain barrier (BBB) is a selectively permeable membrane that regulate the the movement of molecules and cells into the brain from the blood.
It helps in maintaining the brain homeostasis by regulating the amount of molecules that enter the brain.
BBB is formed by endothelial cells of the brain and the barrier effectively seperate the brain from the rest of the body
Although study has shown that the interactions of endothelial cells with oligodendrocytes induce BBB function, the blood-brain barrier is not singlehandedly formed by oligodendrocytes.
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What is the principle product of the calvin cycle that is exported from the chloroplast for use by the plant cell?.
The main calvin cycle byproduct that is exported from the chloroplast and used by the plant cell is trise phosphate.
What is Calvin cycle ?Calvin cycle, also known as the C3 cycle, is a series of chemical processes used by plants to convert carbon dioxide and other chemicals into glucose.
Three molecules of carbon dioxide are used in a full cycle, which results in the production of one molecule of the three-carbon chemical glyceraldehyde-3-phosphate (Gal3P). Normally, the chloroplasts either export this three-carbon sugar phosphate or transform it internally into starch.Since the first stable compound in Calvin cycle is a 3 carbon compound (3 phosphoglyceric acid), the cycle is also called as C3 cycle. The reactions of Calvin's cycle occur in three phases.Learn more about Calvin cycle here:
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which of the following serves as a primary packaging area for molecules that will be distributed throughout the cell mitochondria b) plastids c) golgi apparatus d) vacuole
Answer:
Answer: The Golgi body
Explanation:
is served as a 'primary packaging area' for molecules that will be 'distributed throughout the cell. ' The 'Golgi body' is a 'membrane-bound organelle' of the eukaryotic cell which is made up of a series of 'flattened, stacked pouches' called 'cisternae'.
If anyone could answer this kind of fast that would be great; this is due tomorrow
The names of the biomolecules given in the image are: decanoic acid, glucose, adenosine, testosterone, uracil, serine, glucose and amino acid.
Biomolecules are the organic polymers found inside living organisms. These are made of repeating units of a structure called monomer. The biomolecules are essential for performing several reactions inside the body.
Glucose is one of the major biomolecule that belong to the class of carbohydrates. It is essential for the body as it is the source of readily available form of energy. Glucose is a sugar. It is a six carbon compound. It acts as a monomer that joins together with itself or other components to form several other carbohydrates.
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The ____________ of the entire skeleton or skeletal elements utilizes the anchoring of muscles to attachment sites on the bones, which then serve as levers.
The movement of the entire skeleton or skeletal elements utilizes the anchoring of muscles to attachment sites on the bones, which then serve as levers.
Muscles are anchored to tendon and fibrous connective tissue that attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.
Muscles attach to bones at locations called origins and Insertions. A skeletal muscle attaches to bone at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin. When your muscle activates or bunches up, it pulls on the tendon. Tendons attach muscles to bones. The tendon pulls the bone and make it move.
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what is cell? define cell
Answer:
Cells are the basic building blocks of all living things
Explanation:
Answer: Cells are the basic building blocks of all living things
Explanation: WHATS UP GUYS >:D anywho I hope u guys are a great day and I hope this helps <3
Which metalloids would behave more like metals______?
Which metalloids would behave more like nonmetals_____?
The metalloids that would behave more like metals is known as metalloids in group 16.
The metalloids that would behave more like nonmetals are metalloids in group 13.
What are metalloids?This is a chemical element that forms a simple material with properties that fall somewhere between those of a conventional metal and a typical nonmetal is referred to as a metalloid in chemistry.
In chemical reactions, metalloids can behave either like metals or like nonmetals. The majority of metalloids exhibit both metallic and nonmetallic physical characteristics.
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Answer:
16
13
Explanation:
who was a nineteenth‑century biologist who put forth the theory of evolution through natural selection and published his idea in the book entitled on the origin of species?
Charles Darwin was a nineteenth‑century biologist who put forth the theory of evolution through natural selection and published his idea in the book entitled on the origin of species.
Charles Darwin was the evolutionary scientist who can up with the theory of natural selection and published his findings in the book known as the origin of species. This book, written by Darwin, forms the basis of evolutionary biology.
According to the theory of natural selection, those organisms that are better able to survive and adapt to an environment are selected naturally by the environment to reproduce and pass on their characteristics. The organisms which are not adaptable to the environment get removed from the environment through the process of evolution.
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Complete the blank parts. a)____ are contains the genetic material called, ___, that enables the cell to perform its living functions & divide to form___ b) Chloroplast it is where the process of ________in plant cells occur. Contain ______that is green in colour. C) _______ are small structures where the process of respiration occurs. During respiration, _______, is released from food & used for ______ d) ______ is a jelly like substance surrounding the _______ structures of the cell. It transports _______around the cell & it is where the cell's _____are broken down.
e) Cell wall: is a _____ on the outside of the cell. It _____the cell & gives it ______& also allow _______ & fluids to pass through it.
f.) cell membrane: is the ______ structure of the cell . it allows only some ______ to pass through it.
g) ________ present in both plant & animal cells. It is storage space that contain __________ surrounded by a _________.
The nucleus is an organelle that contains the genetic material called, DNA, which enables the cell to perform its living functions & divide to form new cells.
b) Chloroplast is where the process of photosynthesis in plant cells occur. Contain chlorophyll that is green in colour.
C) mitochondria are small structures where the process of respiration occurs. During respiration, ATP, is released from food & used for meatbolism
d) cytosol is a jelly-like substance surrounding the inner structures of the cell. It transports nutrients around the cell & it is where the cell's glucose are broken down.
e) Cell wall: is a rigid structure on the outside of the cell. It protects the cell & gives it shape & also allows nutrients & fluids to pass through it.
f.) cell membrane: is the semi-permeable structure of the cell . it allows only some molecules to pass through it.
g) vacuoles are present in both plant & animal cells. It is storage space that contain enzymes surrounded by a memebrane.
What is cellular respiration?Cellular respiration is the process by which large food molecules are broken down in the body to release energy in the form of ATP.
Cellular respiration may be aerobic or anaerobic.
Aerobic respiration takes place in the presence of oxygen whereas anaerobic respiration takes place in the absence of oxygen.
The food molecules which are ingested and then broken down are produced by plants during the process of photosynthesis.
Photosynthesis takes place in organelles called chloroplast which contain the green pigment, chlorophyll.
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a chemical that denatures proteins is most likely to be classified as a(n) agent. a chemical that denatures proteins is most likely to be classified as a(n) agent. detergent bacteriostatic bacteriocidal antiseptic
Bactericidal
A chemical that denatures proteins is most likely to be classified as a(n) bactericidal agent.
What are bactericidal agents used for?A bactericidal substance's primary distinguishing characteristic is that it kills bacteria on contact. The cell wall, lipids, enzymes, or protein synthesis within the cell are all affected by these chemicals as they "attack" microorganisms; occasionally, they even employ a mix of these methods.Describe a bactericidal example.The beta-lactam antibiotics (penicillin derivatives (penams), cephalosporins (cephems), monobactams, and carbapenems), as well as vancomycin, are bactericidal antibiotics that prevent the formation of cell walls. Daptomycin, fluoroquinolones, metronidazole, nitrofurantoin, co-trimoxazole, and telithromycin are all bactericidal substances as well.What does the bactericidal effect have on bacteria?Some anti-bacterial, such as penicillin and cephalosporin, are bactericidal because they completely eradicate bacteria. They could harm the bacterial cell directly by attacking the cell wall.These cells can no longer do additional harm to the body since the bacteria cannot attack it.To learn more about bactericidal visit:
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What could you add to this model to show the role of photosynthesis and cellular
respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere?
In order to show the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere, we would explain how they are important to the carbon cycle.
This is because the carbon cycle helps recycle carbon into the atmosphere and cellular respiration helps to release carbon dioxide and the use of photosynthesis pulls off the carbon dioxide from the atmosphere.
What is Photosynthesis?This refers to the process through which green plants generate food through the use of sunlight.
Hence, we can see that the role of photosynthesis and cellular respiration has been explained above.
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If glucose is the sole energy source for cellular respiration in an animal, what proportion of the carbon dioxide exhaled is derived from oxidation of pyruvate to acetyl coa?.
The oxidation of pyruvate to acetyl CoA yields 1/3 carbon dioxide on glycolysis.
Glycolysis occurs in the cytoplasm and results in pyruvate. Pyruvate oxidation takes place in the mitochondrial matrix.
The following reaction results in the conversion of pyruvate to acetyl-CoA:
Pyruvate + NAD⁺ + CoA-SH ⇒ acetyl-CoA + NADH + CO₂
One molecule of pyruvate is converted into one molecule of carbon dioxide.
Also, two molecules of pyruvate are converted into two molecules of carbon dioxide (as glucose on glycolysis yields 2 molecules of pyruvate).
Acetyl-CoA also contributes to the citric acid cycle and generates two molecules of CO2.
Pyruvate thus generates a total of 3 molecules of CO2, whereas glucose generates 6 molecules of CO2 (as glucose on glycolysis yields 2 molecules of pyruvate)
Therefore, we get that pyruvate produces total 3 molecules of CO₂ and glucose produces 6 molecules of CO₂ (as glucose on glycolysis yields 2 molecules of pyruvate).
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in biology, fitness describes an organism's ability to survive and reproduce. classify each example of inherited variation as acting to increase or decrease an organism's fitness. you are currently in a sorting module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. increases fitness decreases fitness
In biology, fitness describes an organism's ability to survive and reproduce. According to Darwin's those organisms have greater fitness which are better adapted to live.
Darwin's idea of evolution, those organisms have greater fitness which are better adapted to live in an environment and which can adapt to changes in an environment. These organisms then pass their characteristics to their off springs. Increases fitness- A dark-colored moth is able to avoid predation on black-barked trees- Red male beetles are preferred by females over other color variants- A mouse with certain kidney adaptations requires less water Decreases fitness- Small-baked finches are less capable of eating large seeds- Bright orange beetles are more likely to be seen by the birds that eat the beetles.
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The question was incomplete. Check below the full question.
In biology, fitness describes an organism's ability to survive and reproduce. Classify the following examples of inherited variations as acting to increase or decrease an organism's fitness- A dark-colored moth is able to avoid predation on black-barked trees- Bright orange beetles are more likely to be seen by birds that eat the beetles- Small-beaked finches are less capable of eating large seeds- Red male beetles are preferred by females over other color variants- A mouse with certain kidney adaptations requires less water in the desert.
cyclodextrins are a group of compounds capable of removing cholesterol from membranes. the effect most likely to have a large impact on cells as a result of cyclodextrin treatment would be
Increased membrane fluidity at higher temperatures would be the effect of cyclodextrin treatment that is most likely to have a significant effect on cells.
What is cholesterol?A lipid that is essential for a healthy body and for the proper operation of cells. It is produced naturally in the liver and is absorbed from food as it travels through the intestines. All cells require it, and the bloodstream carries it.
A fluid buffer, cholesterol has this function. By preventing the membrane from getting too close, it keeps it more fluid even in extremely cold temperatures. It loses fluidity when the temperature is too high.
How does cholesterol function within the plasma membrane?It stabilizes the plasma membrane by preventing the phospholipids from moving around too much. Between the heads of the phospholipids, the OH group extends to the hydrophilic membrane surface.
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