Answer:
The answer is The Archimedes principle.
Explanation:
The Archimedes principle would be used, which is the physical principle that says that a body totally or partially submerged in a resting fluid experiences an upward vertical thrust equal to the weight of the volume of fluid dislodged by the body, that is, a body totally or partially submerged in a static fluid, it will be pushed with a force equal to the weight of the volume of liquid displaced by said object. In this way, can be determine the volume of an object with an irregular shape.
Why does rhyolite have smaller crystals than granite?
_______ is the science of observing and describing organisms in their environment paired with experimental science.
Which of the following describes how bacteria can receive or exchange genetic material? (A) In transformation, some bacteria pick up pieces of DNA from the environment. (B) In conjugation, two bacterial cells temporarily join and transfer genetic material between them. (C) In transduction, viruses infect bacteria, carrying gene from one cell and injecting them into another. (D) All responses apply
The physical gap between two nerve cells across which messages are transmitted is the
Which structure secretes digestive enzymes that break down carbohydrates, fats, and proteins? A. Pancreas B. Large intestine C. Liver D. Salivary glands
Final answer:
The pancreas secretes digestive enzymes, including pancreatic amylase, trypsin, and lipase, which break down carbohydrates, proteins, and fats respectively. It also neutralizes stomach acids with bicarbonate, optimizing the small intestine's environment for digestion.
Explanation:
The structure that secretes digestive enzymes that break down carbohydrates, fats, and proteins is the pancreas. The pancreas produces pancreatic juice, which contains enzymes like pancreatic amylase to digest carbohydrates, trypsin to digest proteins, and enzymes to digest fats. Additionally, the pancreas releases bicarbonate to neutralize the acidic contents from the stomach, ensuring a suitable environment for the enzymes to function effectively in the small intestine.
In relation to where most fat-digesting enzymes are produced, the answer is also the pancreas. While the liver produces bile which emulsifies fats, and the gallbladder stores and concentrates this bile, the actual fat-digesting enzymes, like lipase, are produced by the pancreas.
In a population with 2 alleles for a particular locus (D and d), the frequency of the D allele is 0.75.
a) What is the frequency of the d allele?
b) What is the frequency of homozygous dominant individuals in the population?
c) What is the frequency of homozygous recessive individuals in the population?
d) What is the frequency of heterozygotes in the population?
The frequency of the d allele is 0.25. Homozygous dominant individuals have a frequency of 0.5625, homozygous recessive individuals have a frequency of 0.0625, and heterozygous individuals have a frequency of 0.375.
Explanation:In a population with two alleles for a particular locus (D and d), where the frequency of the D allele is 0.75, the frequency of the d allele would be 0.25, since the sum of the frequencies for both alleles must equal 1.0 (p + q = 1).
The frequency of homozygous dominant individuals (DD) in the population would be the square of the frequency of the D allele (p²), which is 0.75² = 0.5625.
Homozygous recessive individuals (dd) would have a frequency equal to the square of the d allele frequency (q²), which is 0.25² = 0.0625.
The frequency of heterozygous individuals (Dd) would be 2 times the frequency of the D allele times the frequency of the d allele (2pq), which is 2 * 0.75 * 0.25 = 0.375.
A spore stalk grows from the gametophyte of a moss. What is the next step in its life cycle?
A. gameotophyte
B. Meiosis
C. Gametes
D. Mitosis
Minerals in geodes form spectacular euhedral crystals because
Final answer:
Minerals in geodes form spectacular euhedral crystals due to factors such as cleavage, secondary differentiation of elements, and polymerization.
Explanation:
Minerals in geodes form spectacular euhedral crystals because of several factors:
Cleavage: Cleavage is the tendency of a mineral to break along specific planes to make smooth surfaces. Gemstones with cleavage planes can form attractive crystal shapes with smooth faces.Secondary differentiation of elements: The relative temperatures at which minerals crystallize are determined by their lattice energies. Minerals with small, highly charged ions tend to have higher melting points and crystallize first.Polymerization: In some minerals, individual tetrahedra can be joined together by sharing one or more of their oxygens. This polymerization allows zillions of tetrahedra to be joined into chains or sheets, resulting in complex three-dimensional networks of shared tetrahedra.The level of which type of proteins in the blood rises during an inflammatory reaction?
You're watching television and an infomercial comes on for a new stain removal product called "Mr. Fantastic." This product claims to remove any stain from any material, no matter how old it is. You've just finished reading an extensive article about why some stains can't be removed. By comparing these two pieces of information, you're utilizing which of the following? A. Logic B. Observation C. Prediction D. Critical thinking
Answer:
D. Critical thinking
Explanation:
How often does the body perform cellular respiration?
Any energy transformation involves the loss of some energy as what?
In any energy transformation, some energy is lost as heat, which is a concept described by the second law of thermodynamics and is closely related to the increase in entropy, indicating that every energy transfer or transformation is never completely efficient.
Any energy transformation involves the loss of some energy as heat. This principle is encapsulated in the second law of thermodynamics, which states that during any process in which energy changes form, some energy is invariably lost as heat, which is mostly unusable for doing work. For instance, when electrical energy is transformed into light energy in a light bulb, some of the energy is inevitably lost as heat. Similarly, in biological systems such as living cells, some energy is lost as heat during cellular metabolic reactions.
Heat energy is the form that is generated whenever there is friction or resistance during energy transformation, such as when air friction heats molecules due to an airplane's movement. The concept of entropy is closely related, which is a measure of disorder or randomness within a system. As entropy increases, indicating a more disorderly system, the amount of usable energy decreases since higher entropy usually means more energy has dissipated as heat.
How do density and distribution affect quality of life? give a specific example?
Final answer:
Population density and distribution directly impact quality of life by influencing the availability of resources, space, and services. High density can lead to scarcity and competition, while low density might result in limited access to essential services.
Explanation:
Population density and distribution significantly influence the quality of life in various ways. Density refers to the number of individuals living within a unit area, while distribution describes the arrangement or spread of these individuals within their environment. For example, in densely populated areas such as major cities, resources like water, food, and space may become scarce, leading to competition and potentially lower quality of life. On the other hand, areas with a sparse population may have adequate resources but might lack essential services and infrastructure, also affecting quality of life.
Let's consider a specific example: Tokyo, Japan, one of the most densely populated cities in the world, faces significant challenges related to space. The high population density has resulted in smaller living spaces, higher living costs, and congested transport systems. This scenario highlights how high density can stress city infrastructure, leading to a decrease in quality of life. In contrast, areas with lower population density may enjoy larger living spaces and less competition for resources but might struggle with limited access to healthcare, education, and employment opportunities, illustrating how both high and low population densities can impact quality of life differently.
Known to be an integral part of green living inc., rhonda lloyd worked as a renewable energy campaigner for nine years in a remote region of indonesia. what kind of knowledge represents her understanding of the dynamics of village communities and the apprehensions of the locals?
Why is dna not used directly as a code for protein synthesis and instead, a messenger rna must be transcribed?
The DNA not used directly as a code for protein synthesis and instead, a messenger RNA must be transcribed because,
The DNA does not have any protection from the nucleases present in cytoplasm that can cleave any nucleic acid and mRna can protect from nucleases because it have polyadenylation and 5' guanosine.What is role of mRNA?mRNA is single stranded RNAThe role of mRNA is to carry the protein blueprint or genetic information from DNA of cells to its ribosomes.It furnished with the genetic code called codons.learn about messanger RNA or mRNA,
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Diabetics often need injections of insulin to help maintain the proper blood glucose levels in their bodies. how many moles of insulin are needed to make up 45 ml of 0.0062 m insulin solution?
The moles of insulin are needed to make up 45 ml of 0.0062 m insulin solution is 0.00028 moles.
What is insulin?Insulin is defined as a hormone produced by the pancreas that enables your body to either store excess sugar from carbohydrates for later use or utilize it as fuel.
It can also be defined as a hormone that your body naturally produces from your pancreas that aids in using sugar as fuel.
One hormone that is crucial is insulin. It helps your body turn meals into energy and controls how much sugar is in your blood.
Given Concentration = 0.0062 M
Volume = 45 ml
1 ml = 0.001 L
So, 45 ml = 0.045 L
The number of moles of insulin
= 0.045 L x 0.0062 M
= 0.00028 moles
Thus, the moles of insulin are needed to make up 45 ml of 0.0062 m insulin solution is 0.00028 moles.
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Prolactin is a hormone whose molecular structure has remained stable over evolutionary time but whose hormonal role has changed dramatically in different animal species. this is an excellent example of how evolution
The hutterites have been able to maintain their identity and way of life largely as a result of being able to exercise some control over the processes of:
Answer:
Mostly because we keep to ourselves...
Explanation:
I would know, because i am one
which modern day technology helps scientists measure earth landforms and other features more precisely than ever before
Answer:
remote sensing from satellites
Explanation:
Scientists use data collected from remote sensing satellites to study such things as rivers, oceans, fires, pollution, and natural resources. The Global Positioning System (GPS) also uses satellite technology to provide information for navigation and other purposes.
When s.t. first started taking lithium, she would have be cautioned to report side effects. which are common side effects of lithium?
How do flowering plants reproduce by fertilization if they are immotile?
1)Fertilization takes place in their roots.
2)They conjugate with plants nearest them.
3)Insects and other organisms carry pollen to other flowers.
The right answer is 3)Insects and other organisms carry pollen to other flowers.
Entomophilia, also called entomophilous fertilization or entomogamy, is a mode of pollination in which insects participate in the transport of pollen, up to the stigma of the pistil in angiosperms and to the egg in gymnosperms.
The pollinating insects most likely to pollinate flowering plants belong to the order Hymemoptera, including bumblebees, osmies and bees raised by beekeepers. But other insects contribute to the multiplication of plants: the fly (Diptera), attracted by the smell of decaying meat it releases, ensures the multiplication of rafflesia.
How is blood routed through the small intestine? which class of nutrients enters the body via blood?
Blood is supplied to the small intestine by the superior mesenteric artery and nutrients such as glucose, amino acids, and fatty acids are absorbed into the bloodstream. The blood then returns to the heart and is pumped to the rest of the body. Nutrients like carbohydrates, proteins, and lipids enter the body via blood after absorption in the small intestine.
Explanation:Blood is routed through the small intestine via the superior mesenteric artery. This artery distributes blood to the jejunum, ileum, and parts of the duodenum and colon. The nutrients absorbed in the small intestine, such as glucose from carbohydrates, amino acids from proteins, and fatty acids from lipids, transport into the bloodstream. The blood carrying these nutrients then returns to the heart via the hepatic portal vein and superior mesenteric vein before being pumped to the rest of the body.
Among the various class of nutrients, carbohydrates, proteins, and lipids are absorbed through the small intestine into your bloodstream.
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The scientific method can best be described as a plan or set of
Jill runs a hot bath. she starts to get into the tub but the water feels extremely hot. she stands in the hot water for a few moments, then slowly sits down, easing the rest of her body into the water. after a few minutes, she feels quite comfortable; the water no longer feels too hot to her. jill has experienced:
Based on the given scenario, Jill is experiencing sensory adaptation. A sensory adaptation is where sensory system that a person acquires has ability to change in a way that they could adapt in certain situations. It is seen above as the hot water made her feel uncomfortable as she does not intend to sit on the tub while it is still hot and later on, she manage to be comfortable with the hot water after her sensory system has adopted to the stimulus which is the hot water in the tub. The sensory adaptation makes a person’s sensory system feel a change in response of a factor that will affect the system into leading it cope up with the factor affecting it.
Which of the following is a valid concern about the impact of biotechnology on biodiversity? Biotechnology will result in depletion of wild populations because high numbers of organisms will be collected for research. If humans buy only fish produced on aquaculture farms, the fish populations in the wild will decrease. Fish that have been genetically modified will not be able to breed, and species will go extinct. Genetically modified fish could be accidentally released, breed with wild fish, and contribute modified genes to the wild population.
The correct answer is option D
The valid concern of biotechnology on biodiversity is that genetically modified fish could be accidentally released into the environment and those genetically engineered species will breed with the wild type population and the population of modified genes will increase. The concern is true, as if this happens there will be no wild type left in the environment.
Answer:
Genetically modified fish could be accidentally released, breed with wild fish, and contribute modified genes to the wild population.
Explanation:
This is one valid concern that some people express regarding the impact of biotechnology on biodiversity. Biotechnology refers to the modification of natural organisms in ways that are benefitial to humans. For example, these organisms could be more resistant to diseases or be better suited for consumption. However, if the animals were to breed with wild fish, they could contribute modified genes to the wild population, putting it at risk of unwanted modifications and complications.
All of the following are types of symbiotic relationships except for
A. competitive exclusion.
B. parasitism.
C. commensalism.
D. mutualism.
answer is a
Correct answer: A). Competitive exclusion.
The competitive exclusion principle states that the two species that are competing for the same resources can not live together.
One out of the two competitors will always have an advantage over the other, that leads to the extinction of another species. As a result of that competing species evolve different characteristics in the areas where both of them coexist. Rest all parasitism, mutualism, and commensalism is an example of the symbiotic relationship.
Hence, the correct answer would be option A.
Provide information regarding microbial size, shape, motility, and differentiation of the following preparations: spore stain, negative stain, simple stain, hanging drop slide, and Gram stain. Could the Gram stain be used to diagnose the flu? Why or why not?
No gram stain cannot be used because influenza virus causes flu and virus has no cell wall which we could stain.
Further explanation
Microbial size
A reasonable standard for estimating organisms is the micrometer which is multiple times littler than a meter (one-millionth of a meter). There are 106 µmeters in one meter, and it is these units that are utilized to quantify the size of microscopic organisms. Normally, microscopic organisms extend from around 1 µm to around 5 µm.
Microbial shape
There are a huge number of microbes, yet every one of them are essentially of three unique shapes. Some are rod like and called bacilli and E. coli is rod shaped. While some are round in shape like cocci e.g Staphylococcus. Third type is spiral like and is called spirilla.
Motility of microbes
The have the ability to swim or crawl frequently and interact with their physical and chemical environments.
Spore staining
It is a technique which is used for differentiation and we dye the cell wall and spores of bacteria.
Simple stain
It is one of very simple methods which involves only a single solution for staining.
Hanging drop slide
It is a technique which used wet mount and organism is dipped in it and then that organism is placed on a slide under microscope for analysis.
Gram stain
In this technique in which an organism is stained. It may be gram positive or gram negative.
Answer details
Subject: Biology
Level: college
Key words
Microbial size Microbial shape Motility of microbes Spore staining Simple stain Hanging drop slide Gram stainLearn more to evaluate
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Gram stain cannot be used to diagnose the flu.
Further Explanation:
Microbes are very small in size around 1µm-10µm. They are not easily visible by naked eyes. We can visualize microbes through the microscope.
Microbes divide majorly into categories:
• Bacteria
• Fungi
• Virus
• Protozoa
• Algae
Microbes are unicellular and some are acellular. Microbes synthesize their food through photosynthesis and some depend on the host cell.
Microbes have a different type of shapes:
• Spherical (cocci)
• Rod (bacilli)
• Spiral (spirilla)
• Comma (vibrios)
Motility is the capability of an organism to move. Flagella is present in mostly bacilli bacteria which help in the movement of bacteria.
Spore stain-
It is a differentiation technique in which we distinguish cell and spores. Malachite green dye is used which binds to walls of spores and cell. After washing, the comes out from the cell wall and pores remain green.
Negative stain-
In this technique background is stained and the specimen is unstained. This technique is used for determining cell size and arrangement of cells. Nigrosin dye is used in negative staining.
Simple stain-
In this technique, we use only one stain for bacterial staining, for example, methylene blue and safranin.
Hanging drop slide-
In this technique, slide has a concavity which contains an organism dipped into the fluid. This technique used to analyze the motility of an organism.
Gram stain-
In this technique, we differentiate two kinds of bacteria gram-positive and gram-negative on the basis of thickening of the cell wall.
Gram-positive bacteria contain thick peptidoglycan in their cell walls, due to which cells stained violet. Gram-negative bacteria are not capable to retain this solution due to thin cell walls that lack peptidoglycan layer.
Thus, the flu occurs due to the influenza virus. Viruses are enclosed by a protein coat they do not contain any cell wall because of this they cannot be tested using gram staining.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Microbiology
Keywords:
Microbial size, microbial shape, motility of microbes, spore staining, simple stain, hanging drop slide, gram stain, gram-negative bacteria, gram-positive bacteria, influenza virus, bacteria, protozoa, algae.
____ is the initial treatment of choice for children and adolescents with anorexia who are living at home.
The initial treatment of choice for children and adolescents with anorexia living at home is mental health counseling combined with nutritional counseling.
Explanation:The initial treatment of choice for children and adolescents with anorexia who are living at home is mental health counseling combined with nutritional counseling. These two forms of counseling help address the psychological and nutritional aspects of anorexia, which are crucial for recovery. In some cases, medication such as antidepressants may also be prescribed to address co-existing mental health conditions. Hospitalization is usually reserved for severe cases with significant physical health consequences.
A difference between miocene apes and modern apes is the
Which of the following is a key factor that influence BAC A , height B, eating certain foods C, body weight D, all of the above
Eating certain foods, body weight, and height are key factors that influence BAC (blood alcohol concentration).
Explanation:The key factor that influences BAC (blood alcohol concentration) is eating certain foods, body weight, and height. When alcohol is consumed, it is absorbed into the bloodstream and affects the BAC, which is influenced by various factors. For example, someone who weighs more may have a lower BAC after consuming the same amount of alcohol as someone who weighs less.