Answer:
Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.
Explanation:
what is the best definition for a Liger?
Answer:
The liger is a hybrid offspring of a male lion (Panthera leo) and a female tiger (Panthera tigris).
Explanation:
Phosphofructokinase is an enzyme that acts on fructose 6-
phosphate at an early step in glucose breakdown. Regulation of this enzyme controls
whether the sugar will continue on in the glycolytic pathway. Considering this graph,
under which condition is phosphofructokinase more active? Given what you know about
glycolysis and regulation of metabolism by this enzyme, explain the mechanism by which
phosphofructokinase activity differs depending on ATP concentration. Explain why it
makes sense that regulation of this enzyme has evolved so that it works this way.
Why do we see each moon phase
only about once a month?
Choose 1 answer:
A
It takes about 27 days for the
moon to rotate on its axis once.
B
It takes about 27 days for the
moon to orbit Earth once.
It takes about 27 days for the
moon to orbit the sun once.
Answer:
A
it takes about 27 days for moon to rotate on its axis
he condition of the Earth’s atmosphere at a given place and time is known as __________.
A.
climate
B.
precipitation
C.
temperature
D.
weather
Answer: D weather
Explanation:
which kind of animals compete for the same kind of food? what type of competition is it
*fox
*leopard
*squirrel
*lion
Answer:
Leopard and lion
as they both are carnivores ( eats meat only)
Answer:
leopard and lion (carnivores )
Explanation:
intraspecific competition
In order to determine the shape of human muscle cells, a scientist should:
A. observe a sample of the cells with an electron microscope
B. prepare a medium for making a culture of the cells
C. observe a sample of the cells with a light microscope
D. prepare a model of that type cell
observe a sample of the cells with a light microscope
Explanation:
.
animal viruses often have glycoprotein spikes on their capsids or envelopes. group of answer choices true false
According to the research, the statement is true, animal viruses often have glycoprotein spikes on their capsids or envelopes.
What are viruses?It is an obligate intracellular parasite, small in size, made up of nucleic acid and protein.
They have a layer or envelope of lipids and glycoproteins, which they obtain from the cell membrane of their host cells, and which is used to inject genetic material into the cell.
Therefore, we can conclude that according to the research, the statement is true, animal viruses often have glycoprotein spikes on their capsids or envelopes.
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You are a molecule of phosphorus. Choose a starting point in the phosphorus cycle and describe the process you would go through to move through the entire cycle.
Living creatures and the soil exchange phosphorus. Phosphates are taken up by plants from the soil and assimilated into organic molecules. Plants are consumed by animals, which then moves phosphorous up the food chain from one animal to the next. When an animal perishes and decomposes, phosphorus is released back into the soil.
Which of the following describes a renewable of active solar energy?
A. Sustainable lack of a mission
B. Unlimited, clean energy source
C. Replenishable but not renewable
D. Needs energy grid for electricity
Answer:
C: replenishable but not renewable
Explanation:
What is the advantage of starting with the 4x objective before moving to the 10x and then the 40x objective?.
The advantage of starting with the 4x objective before moving to the 10x and then the 40x objective is that the lower power objective has a larger field of view and is easier to focus.
What are objective lens of a microscope?An objective lens of a microscope are those lens that are used to focus that sample on a slide and they are always the closest lens to the slides.
The four types of objective lens of a microscope include:
× 4 objective×10 objective×40 objective andoil immersionThe advantage of starting with the 4x objective before moving to the 10x and then the 40x objective is that the lower power objective has a larger field of view and is easier to focus.
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Irregular stream flow which causes swirling of water in a specific area and localized erosion causes a deeper section known as a __________.
Irregular stream flow which causes swirling of water in a specific area and localized erosion causes a deeper section known as a deneduation.
What is deneduation?The processes of erosion, leaching, stripping, and diminishing the mainland as a result of material removal from higher to lower locations such valleys, river valleys, lakes, and oceans with a permanent filling of low lands are together referred to as denudation.
The elevation and relief of landforms and landscapes on Earth's surface by flowing water, ice, wind, and waves.
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Explain why genetic diversity is a good principle for secure development. Cite an example of lack of diversity that has had or can have a negative impact on security.
Answer:
Genetic diversity is a good principle for secure development because it is critical for a population to adapt to changing environments. It helps maintain the health of a population.
Explanation:
Genetic Diversity refers to the range of different inherited traits within a species. In a species with high genetic diversity, there would be many individuals with a wide variety of different traits.
Mutations are important to genetic diversity because it creates a new DNA sequence for a particular gene, creating a new allele. This is important because including alleles that are diverse may be valuable in resisting diseases, pests, and other stresses
Genetic diversity is a good principle for secure development because it ensures the chances of adaptation in living organisms with respect to changing environmental conditions.
What is Genetic diversity?Genetic diversity may be defined as the total number of genetic characteristics in the genetic makeup of a species. It serves as a way for populations to adapt to changing environments. It facilitates the survival of particular species.
A lack of diversity may have a negative impact on security. This can be understood by the example that if there were not many variables seen in the Darwin finches in the Galapagos islands, more birds feel the scarcity of food and due to this, they have died and become extinct from nature.
Therefore, with more genetic variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment.
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diphtheria causing agent mode of Transmission, incubation period,symptoms and preventive measures and cure
answer it faster and faster
Answer:
vf
Explanation:
fg
Diptheria is a serious infection mainly caused by a specific type of bacteria. This diseases is associated to different symptoms.
What is the causing agent?This disease is caused by Corynebacterium diphtheriae, which is a specific type of bacteria. Moreover, this bacteria produces toxins and this is the cause of the symptoms.
How is it transmitted?This can be transmitted through saliva droplets from one infected person to a healthy person. Usually, symptoms appear within 5 days after getting the bacteria.
What are the symptoms?Although this disease has many symptoms, the most important ones are sore throat and gray lining on the throat and nearby areas.
How to prevent it or treat it?Antibiotics and antitoxins are often used, but the best is to prevent it through vaccination.
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ou add a fluorescent antibody to a cell surface protein to a dish of cells. Looking at an individual cell under the microscope the entire surface of the cell is fluorescent. You then hit the cell with a brief pulse from a laser which bleaches out part of the fluorescence on the cell. Over time you notice that the entire surface of the cell becomes fluorescent again. What is the best explanation for this observation
The best explanation for this observation is that the proteins from parts of the cell membrane that were not bleached with the laser diffuse into regions of the membrane that were bleached.
What is an observation?It should be noted that observation means the active acquisition of information from a source.
In this case, the best explanation for this observation is that the proteins from parts of the cell membrane that were not bleached with the laser diffuse into regions of the membrane that were bleached.
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Decussation of pyramids refers to crossover of major motor tracts in the ________ region of the brain
The decussation of pyramids refers to crossover of major motor tracts in the medulla oblongata region of the brain.
What is medulla oblongata?The medulla oblongata is the bottom most part of the brain.
It serves as the point where the brain and spinal cord connect, making it a key conduit for nerve signals to and from the body.
It also helps control vital processes like your heartbeat, breathing and blood pressure.
Thus, the decussation of pyramids refers to crossover of major motor tracts in the medulla oblongata region of the brain.
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Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
b. Demonstrate a cross between a heterozygous black/homozygous smooth and homozygous white/heterozygous rough. describe the phenotypes as fractions?
When under excessive passive tension, what muscle limits scapular upward rotation, posterior tilting, and external rotation?
Pectoralis minor is the muscle which limits scapular upward rotation, posterior tilting, and external rotation when under excessive passive tension.
What is Pectoralis minor?This muscle is found below Pectoralis major and originates from the middle ribs to the scapula.
When under pressure this muscle limits the various types of movements which are mentioned above.
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Which is the most likely explanation for the change? the beetle population moved to a greener habitat. a natural disaster almost caused the extinction of the population. the beetle population’s food sources decreased dramatically. a mutation resulted in a new color of insect.
The correct answer is D ie. a mutation resulted in a new color of insect.
A mutation is a change in a gene's structure, which is how inheritance works. Deoxyribonucleic acid (DNA), a lengthy molecule made up of units referred to as nucleotides, is the substance that makes up genes. Each nucleotide is constructed around one of four distinct bases.Due to population genetic variability, the population of lady beetles has changed over the generations (also called genetic diversity).The color gene of insect carapaces is the gene that has undergone diversification in this instance. In this example, there are two alleles (one for the green color and the other for the yellow color).Hence , the answer to this question is option D
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These protein-based substances enhance digestion by making chemical reactions more likely to happen. group of answer choices bile emulsifiers enzymes hormones
Answer:
The answer is enzymes..
Which bronchus is about 5cm long and slightly narrower and more horizontal than the one on the opposite side?.
Answer:
Explanation:
left main bronchus
Help! I have already reed it and I cant figer it out.
Go to the following website. Prepare a short essay on the website describing the information provided and the purpose of this information.
https://www.genome.gov/About-Genomics/Introduction-to-Genomics
A short essay on the website describing the information provided and the purpose of this information about the genome is given Genomes are product of DNA, a very massive molecule that looks as if a lengthy, twisted ladder.
What does genome appearance like?If all of the DNA from a single human cell turned into stretched-out end-to-end, it'd make a six-foot-lengthy strand created from a six billion letter code. It’s difficult to assume how that a good deal DNA may be packed right into a cell nucleus, that's so small it could simplest be visible with a specialized microscope.
DNA is examined like a code. This code is made from 4 styles of chemical constructing blocks, adenine, thymine, cytosine, and guanine, abbreviated with the letters A, T, C, and G. The order of the letters on this code permits DNA to characteristic in exceptional ways. The code modifications barely from individual to individual to assist make you who you are.
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Compare the structure of the human liver with that of the fetal pig.
The comparison between the human liver and the fetal pigs liver is that the human liver has four lobes while the fetal pigs liver has five lobes.
What is the use of the human liver?
The difference between the human liver and the liver of the fetal pigs is that the human liver has four lobes namely right, left, caudate and quadrate. Meanwhile, the liver of the fetal pig has five lobes namely right lateral, right central, left central, left lateral, and caudate.
Thus, we can conclude that the comparison between the human liver and the fetal pigs liver is that the human liver has four lobes while the fetal pigs liver has five lobes.
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Patient: 67 year old female diagnosis: heart failure prescription: daily dose of 48.5mcg of digoxin. how milligrams would be
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 3.25 milligrams.
What is drug dosage?Drug dosage refers to the amount of drug required to be administered to a patient per given time based on body weight or age.
The dosage for digoxin for treatment of heart failure for the 67 year old woman is 48.5 mcg/kg body weight.
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 48.5 * 67/1000 = 3.25 milligrams.
In conclusion, the dosage of drugs depends on age and body weight.
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Regulating hormones from the hypothalamus ________
Regulating hormones from the hypothalamus first enter into the hypophyseal portal system.
Are hormones regulated by the hypothalamus?The hormones produced by the hypothalamus and secreted by the neurohypophysis are antidiuretic hormone and oxytocin. Antidiuretic hormone promotes an increase in urine concentration, as it ensures greater reabsorption of water by the kidneys.
It is the hypothalamus that produces the antidiuretic hormone and oxytocin, which will be secreted by the neurohypophysis.
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what is potential energy
Answer:
The energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
Explanation:
Energy is a delicate notion that is extremely difficult to master. Energy is sometimes described as the ability to accomplish labor, that is, to push anything against a force. That isn't completely correct, since due to the Second Law of Thermodynamics and the fact that much energy is merely mass, there is a lot of energy that isn't accessible to do any work. We're on somewhat better ground with potential energy. When we say there is potential energy, we mean that there is something in a system that, if permitted to alter, has the capacity to accomplish work. Saying that there is potential energy is a form of abbreviation. Consider gravitational potential energy. If two masses are separated by a distance, we might let them fall together and accomplish some work, perhaps by pulling a rope tied to a wheel or whatever. We have the energy to get there. Of course, it is a fraction of the overall energy in the system. When we get to notions like that, we must count a lot more. Nonetheless, some cosmological models require a type of negative gravitational potential energy to make total energy conservation work. According to such views, nearly all of the universe's mass condensed out of the vacuum to offset the negative energy associated with the inflationary epoch. As a result, the universe's total energy is zero. It is not the sole hypothesis, but it is useful in that it answers the issue of why there is something rather than nothing. It would imply that there is nothing completely, but it is unevenly dispersed. One of the two major forms of energy is potential energy. Potential energy is the amount of energy that an object can hold. It is the power that a thing has while it is not in motion. The potential energy of a moving item increases as it slows down. The object's capacity strength reduces as it accelerates. Potential energy is the electricity that occurs as a result of the relative locations (configurations) of the components in a physical machine. This energy form has the capacity to modify the state of other things around it, such as the configuration or movement. Potential energy encompasses a wide range of energy kinds.
Only animals have prokartyotic cells:
True
False
Answer:
The answer is neither True nor False .Because:
The organisms which are prokaryotes(have prokaryotic cell) are only Kingdom Monera i.e Bacteria and blue green algae and all the remains i.e plants,animals,fungis,protists have eukaryotic cells.
Schools are looking for a balanced food option to serve their students.
they are looking for a food that has some carbohydrates, proteins, and lipids.
1. identify a food on the list that has some of each of the macromolecules.
2. explain how you know that the food has the macromolecules.
hint:
start your exploration with a food that is common in schools!
Schools have to give proper meals and carbohydrates to students.
What is a balanced diet?A balanced diet is one that includes a variety of foods in the right amounts and ratios to meet the body's needs for calories, proteins, minerals, vitamins, and other nutrients. A small portion of the diet is also set aside for extra nutrients to last through the brief period of leanness. In this situation, we must choose a unique menu that offers the
In this context, we have to first prepare the list of the number of carbohydrates, lipids, and proteins and then we have to identify the maximum amount required in the meal. then observe the common food in the school.
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to aThe development of the cell theory is directly related to advances in microscope technology why are these two related?
The study of the cell theory required the use of more sophisticated microscopes hence development of the cell theory is directly related to advances in microscope technology.
What is cell theory?The cell theory portrays the idea that a cell is the smallest unit of an organism. Cells are so small that they can nit be seen with the ordinary optical eyes. As such, the eyes must be aided by a device such as a microscope to make the study of the cells possible.
From the time of Robert Hooke when the cell theory began to take more shape, the complex microscope was discovered. As time went on, the cell theory was advanced and more sophisticated microscopes had to be produced.
Thus, development of the cell theory is directly related to advances in microscope technology.
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Name three industries in the North?
Help please help! Need help
Answer:
option c. 1 is correct.
*For detailed explanation refer to the attachment.