Vestigial structures, such as hip bones in whalesand appendixes in humans, are those that havelittle or no function for the organism. What is themost likely reason for this loss of function overtime
Answers
Answer:
This structure has not been highly beneficial for the organism
Explanation:
Vestigial structures are cells, tissues, and/or organs that have no apparent function. Vestigial structures are retained during the course of the evolution, but often they are degenerate and/or atrophied (due to disuse). In general, these structures are homologous to anatomical structures that play a specific role in evolutionarily related species. Some examples of vestigial structures include, among others, the presence of the appendix in humans and wings in flightless birds.
Related Questions
You perform a quadrant streak of e. coli at 11:00 am. How many bacteria are present in one cfu at 9:00 pm?
Answers
E.coli Bacteria present in one CFU at 9:00 pm = 1.07 X 109 bacteria and E.coli at 11:00 am = 1 generation time. That means 2.66X 10^ 9 cells per 1 CFU.
The average CFU in probiotics is between 1 and 10 billion CFUs per serving. To find out the number of CFU in the sample then the number of colony forming units on thee countable plate is multiples by 1/FDF. For example when the countable place has 200 colonies then 200 CFU and the FDF was 1/4000.
CFU measures the viable cells.High number of E.coli bacteria in water indicates that contaminated by feces. and it increasing the risk of exposure to pathogens that causes illness.
To learn more about E.coli Bacteria here
https://brainly.com/question/14258810
#SPJ4
1
2
3
4
5
6
8
9
10
Which of the following is not a strategy for improving the long-term health of cities?
Answers
Answer:
6 10
Explanation:
i think it is the answer
C
The animals that live in the polar region have the following adaptation(s):
a.) all of the answers listed
b.) thick fur
c.) breed less often
d.) slow maturation
Answers
Answer:
the answer should be A
Explanation:
The location of continents has no affect on their climate.
Please select the best answer from the choices provided
ОТ
OF
Answers
Answer:
The answer is False because climate is affected by location too. Continent near tropical area and continent near poles can be taken as an example.
please answer this for me
Answers
Answer: Organ
Check my answer
Explanation:
History taking is key part of each initial consultation. Which of the following is NOT typically included?
How the animal is behaving
What tests are going to be carried out
What the symptoms are
How the animal is eating and drinking
What treatments they are receiving (including non-prescribed)
Answers
Answer:
what test are going to be carried out
Brain damage is very likely if the brain is without oxygen for how long? 0 - 1 minutes b) 2 - 3 minutes c) 4 - 6 minutes d) > than 6 minutes
Answers
Brain damage is very likely if the brain is without oxygen for c) 4 - 6 minutes. However, it's important to note that some brain damage can occur even after a shorter period of oxygen deprivation, and the severity of damage can vary depending on the individual and circumstances.
A brain injury may occur after a traumatic injury, such as a fall or car accident, or after a non-traumatic acquired injury, such as a stroke.The brain, unlike cuts and other injuries on the body, does not heal completely. Recovery and recovery from brain injury depends on the cause of the injury and the person's symptoms.
The brain is a complex organ. Each part of the brain has different functions. Symptoms of brain injury depend on the location of the injury.
Know more about brain damage, here:
https://brainly.com/question/30420853
#SPJ11
Which is the proper order of structures that contact the substances removed from the blood? a. nephron → urethra → bladder → ureter b. urethra → ureter → bladder → nephron c. nephron → ureter → bladder → urethra d. urethra → bladder → ureter → nephron
Answers
The proper order of structures that contact the substances removed from the blood is: c. nephron → ureter → bladder → urethra. Therefore, the correct option is c.
The nephron is a functional unit of the kidney that filters the blood and removes waste products. The ureter is a tube that carries urine from the kidney to the bladder.
The bladder is a muscular organ that stores urine until it is released from the body through the urethra. Finally, the urethra is a tube that carries urine out of the body.
The part of the kidney responsible for filtering blood and producing urine is called a nephron. The ureter, a muscular tube that transports urine from the kidney to the bladder, receives the pee next.
The urethra, a tube that extends from the bladder to the outside of the body, is where urine is expelled. The bladder is a muscular sac that holds urine until that time. Therefore, the correct option is c.
For such more question on nephron:
https://brainly.com/question/25661058
#SPJ11
Do more underwater labs need to be created? Why or why not?
Answers
Answer:
It's opinions based so I'll give you some info that you can use for whatever you choose.
Explanation:
It costs lots of money as well as staff which is very expensive to maintain one. There is also extra costs required for developing, testing, and maintaining a water proof area.
explain the role of a DNA Analyst
Answers
Answer:
DNA analysts prepare and analyze DNA from criminal evidence. They interpret the results of their DNA analysis and often are required to testify as expert witnesses on their findings. Because of the important nature of their work, analysts check each others findings (a process known as peer review)
5. What are virus hoaxes? Why are the hoaxes sometimes more dangerous than an actual virus?
Answers
Answer:
An actual computer virus is a malicious software, often known as malware, that can harm a computer and its users.
Virus hoaxes are false or misleading information about viruses that circulate through various communication channels.
They can be more dangerous than actual viruses due to their ability to spread quickly, cause panic, and undermine effective public health measures.
Virus hoaxes are deceptive messages or claims that often exaggerate the severity or impact of a particular virus. They can be spread through social media, email chains, or word of mouth. These hoaxes may include misinformation about symptoms, transmission methods, or false remedies, leading people to take ineffective or even harmful actions.
What makes virus hoaxes particularly dangerous is their potential to create panic and misinformation at a rapid pace. The viral nature of social media and other communication platforms allows these hoaxes to reach a wide audience within a short period. As a result, people may make decisions based on false information, such as avoiding necessary medical treatment, taking unnecessary precautions, or spreading fear and misinformation to others.
Moreover, virus hoaxes can undermine public health efforts by diverting attention and resources from legitimate preventive measures. They can erode trust in healthcare authorities and disrupt the dissemination of accurate information, making it harder for individuals to make informed decisions and follow recommended guidelines.
This can have severe consequences, especially during outbreaks or pandemics, where timely and accurate information is crucial for public safety. Therefore, it is essential to verify the credibility of information and rely on trusted sources to mitigate the risks associated with virus hoaxes.
Learn more about viruses :
https://brainly.com/question/29156932
#SPJ11
The following are enzymes except 1 lipase 2glucose 3amylase
Answers
The lipase and amylase are enzimes. Glucose is a monosaccharide.
Hope this helped.
What might have happened to the color-blind allele in the Pingelapese population following the typhoon if Mwanenised had had no children?
Answers
I would predict that is may not be in the Hardy-Weinberg equilibrium because the allele and genotype frequencies might not stay constant from generation to generation since other evolutionary influences (inbreeding) are present. The Hardy-Weinberg principle requires that mates are chosen at random without preference for a particular trait, and in this case, mates were likely chosen based on the limited amount of choices on the island, and inbreeding is a unique form of nonrandom mating.
Name the causative agent for chlorea
Answers
Answer:
Hey mate....
Explanation:
This is ur answer....
Cholera is an acute, diarrheal illness caused by infection of the intestine with the toxigenic bacterium Vibrio cholerae serogroup O1 or O139. An estimated 2.9 million cases and 95,000 deaths occur each year around the world.
Hope it helps!
Brainliest pls!
Follow me! ♧
You discover a new species of insect. You learn that its gamete contain 4 chromosomes each and contain 20 pg of DNA. Given this information, what can you conclude about this organism's somatic cells? a They will contain 4 sister chromatids. b They will contain 40 pg of DNA during GO c They will contain 2 chromosomes during prophase of mitosis. d They will be haploid (2n)
Answers
options a, b, and c are not accurate conclusions based on the given information.
The correct answer is d) They will be haploid (2n). Gametes are haploid cells, meaning they contain half the number of chromosomes as somatic cells. Since the insect's gamete contains 4 chromosomes, the somatic cells would have a diploid number of 8 chromosomes (2n = 8). The amount of DNA in the gamete is not necessarily indicative of the amount of DNA in the somatic cells, as somatic cells can undergo DNA replication and have varying amounts of DNA depending on the stage of the cell cycle.
to know more about,Gametes visit
https://brainly.com/question/11479681
#SPJ11
Some disease-causing microbes attack the body by turning on or off specific signal transduction pathways. In the disease cholera, the bacterium Vibrio cholerae causes massive diarrhea by interfering with such a pathway. A toxin from this bacterium enters intestinal cells and chemically modifies G proteins. Once modified, the G proteins can no longer cleave GTP into GDP. What would you expect to see within the intestinal cells of a person with cholera?
The G protein subunits do not separate from each other.
The G proteins remain activated and continually activate adenylyl cyclase.
The G proteins cannot become activated and cannot activate adenylyl cyclase.
The receptor in the membrane is continually activated.
Answers
Answer:
dude
Explanation:
Explain the difference between the Needham experiment and the Spallanzani experiment in terms of
their methods, results, and conclusions.
Answers
The Needham experiment was replicated in the Spallanzani experiment, albeit with a few significant modifications.
In an experiment, John Needham in England filled a bottle with broth, cooked it to kill any organisms within, and then sealed it. Days later, he revealed that there was life in the broth and said that it had been generated spontaneously, concluding that this DOES happen. In actuality, his experiment was defective and caused the flasks to become contaminated.By extending the boiling time and securing the flasks from air and germs, Spallanzani altered Needham's experiment. As a result of his failure to spot any growths inside the flasks, he came to the conclusion that spontaneous generation was not feasible.By adding broth to two different bottles, heating the broth in both bottles, and then closing one bottle while leaving the other open, Spallanzani conducted his own experiment. The unsealed bottle was swarming with tiny living things a few days later, which he could see more clearly with the recently created microscope. No evidence of life could be seen in the sealed bottle. This effectively eliminated the possibility of spontaneous generation. Because oxygen was believed to be required for spontaneous generation, experts of the day noticed that Spallanzani had deprived the sealed bottle of air. Because of this, even if his experiment was successful, his arguments were refuted effectively.Learn more about the Needham experiment with the help of the given link:
https://brainly.com/question/14485317
#SPJ13
More than 10% of people carry the parasite Toxoplasma gondii. The following table gives data from Prague on 15- to 29-year-old drivers who had been involved in an accident. The table gives the number of drivers who were infected with Toxoplasma gondii and who were uninfected. These numbers are compared with a control sample of 249 drivers of the same age living in the same area who had not been in an accident.
Infected Uninfected
Drivers with accidents 21 38
Controls 38 211
(a) What are the two variables being compared? Which is the explanatory variable and which is the response?
(b) Depict the data in a graph. Use the results to answer the question: are the two variables associated in this data set?
Answers
Answer:
Explanation:
(a) The two variables being compared are the occurrence of accidents (drivers with accidents vs. controls) and the infection status with Toxoplasma gondii (infected vs. uninfected). In this case, the explanatory variable is the infection status with Toxoplasma gondii, and the response variable is the occurrence of accidents.
(b) To depict the data in a graph, we can create a 2x2 contingency table or a bar chart. Since the data is already provided in a 2x2 table format, we can use a bar chart to visualize the comparison between the variables.
markdown
| Infected | Uninfected |
------------------------------------------------
Drivers with accidents | 21 | 38 |
Controls | 38 | 211 |
In the bar chart, we would have two bars representing the occurrence of accidents: one for drivers with accidents and one for controls. Each bar would be divided into two sections representing the infection status: infected and uninfected.
To determine if the two variables are associated in this dataset, we need to assess if there is a difference in the distribution of infection status between the drivers with accidents and the controls. If there is a notable difference, it suggests an association between the variables.
The problem is comparing whether being infected with Toxoplasma gondii influences involvement in car accidents. An explanatory graph can be created and a statistical analysis such as chi-square test can give a more accurate inference on the association between these two variables.
Explanation:(a) The two variables being compared in this problem are 'status of being infected with Toxoplasma gondii' and 'involvement in car accidents'. Here, the explanatory variable is 'status of being infected with Toxoplasma gondii' because we are examining its effect on the response variable, 'involvement in car accidents'.
(b) For depicting the data in a graph, one could create a bar graph with two variables 'Infected' and 'Uninfected', represented along the horizontal x-axis. The vertical y-axis could represent the quantity of people from the two groups: 'Drivers with accidents' and 'Controls'.
If the bar of 'Infected' drivers with accidents is significantly higher than 'Infected' controls, then we can say these two variables are associated in this data set. Otherwise, the association is not significant. To be sure, a statistical test such as chi-square test would provide a more definitive answer.
Learn more about Association between Variables here:
https://brainly.com/question/32825410
#SPJ2
A species that is thought of as K-
selected will have
A. most offspring survive into adulthood
B. small adults
C. most individuals die early
D. adapted to unstable environments
Answers
Probably A because k-species produce offsprings that have a higher chance of surviving to maturity..NOT 100% SURE IF IM RIGHT THO..
What are the fundamental methods, models, or theories in
nanotribology? Please be as explicative as you can.
Answers
The fundamental methods, models, and theories in nanotribology include Atomic Force Microscopy (AFM), Molecular Dynamics (MD) simulations, Contact Mechanics, Surface Chemistry, and Lubrication Theory.
Nanotribology, also known as nanoscale tribology, is the study of friction, wear, and lubrication at the nanoscale level. It focuses on understanding the fundamental mechanisms and behaviors of surfaces and interfaces when subjected to relative motion on the nanometer scale.
There are several fundamental methods, models, and theories employed in nanotribology research:
Atomic Force Microscopy (AFM): AFM is a widely used technique that allows for the measurement and manipulation of surfaces at the atomic and molecular scale. It provides detailed information about surface topography, friction, and adhesion forces.
Molecular Dynamics (MD) Simulations: MD simulations use numerical methods to simulate the motion and interactions of atoms and molecules. These simulations provide insights into the behavior of surfaces, lubricants, and additives at the nanoscale, allowing for the prediction of friction and wear properties.
Contact Mechanics: Contact mechanics is the study of the deformation and interaction between contacting surfaces. It involves the analysis of forces, stresses, and deformation at the interface, which helps in understanding the origins of friction and wear.
Surface Chemistry: Surface chemistry plays a crucial role in nanotribology. It involves studying the chemical composition, structure, and reactivity of surfaces, as well as the formation of boundary layers and tribofilms during sliding.
Lubrication Theory: Lubrication theory focuses on understanding how lubricants reduce friction and wear between surfaces. It includes concepts such as boundary lubrication, hydrodynamic lubrication, and elasto hydrodynamic lubrication, which describe different mechanisms of lubrication at the nanoscale.
These methods, models, and theories collectively contribute to advancing our understanding of nanotribology and have applications in various fields, including materials science, nanotechnology, and engineering.
Know more about Atomic Force Microscopy here:
https://brainly.com/question/15561883
#SPJ8
What is the order of life in hierarchical order?
Answers
Answer:
The order of life in hierarchical order is:
atom, molecule, macromolecule, organelle, cell, tissue, organ, organ system, organisms, population, community, ecosystem, biome and biosphere.
Explanation:
Exchange of gases takes place in plants through leaves only true or false
Answers
Hope it helps!
(PLEASE HELP IT IS DUE TODAY)
1. Which statement best describes stem cells?
A. Stem cells are commonly found in the brain of adults.
B. Stem cells are flowing through our veins delivering oxygen to the other cells of your
body.
C. Stem cells are only found in prokaryotes.
D. Stem cells are unspecialized cells that have the potential to differentiate into a wide
variety of cell types.
Answers
Answer:
It might be A
Explanation:
It might be A because stem cells are usually found in brain, blood, bone marrow, muscle, skin, heart, and liver tissues.
Answer:
the answer to that one is D
During prometaphase, microtubules grow from the ________ to attach to the ________.
Answers
During prometaphase, microtubules grow from the centrosomes (also known as the microtubule organizing centers) to attach to the kinetochores of the chromosomes.
The centrosomes, located near the nucleus, serve as the main organizing centers for microtubule assembly during cell division. As the cell progresses into prometaphase, the centrosomes move to opposite poles of the cell, and microtubules emanate from each centrosome towards the chromosomes.
The microtubules that grow from the centrosomes are referred to as spindle fibers. They extend and search for the kinetochores, which are protein structures located at the centromere region of each chromosome. The kinetochores serve as attachment sites for the spindle fibers.
The spindle fibers interact with the kinetochores in a dynamic process, forming connections called kinetochore microtubules. These connections are crucial for the proper alignment and segregation of the chromosomes during cell division. Once attached, the spindle fibers exert forces on the chromosomes, aligning them along the cell's equatorial plane.
The attachment of microtubules from the centrosomes to the kinetochores is essential for the accurate distribution of genetic material during cell division. It ensures that each daughter cell receives the correct complement of chromosomes. Any errors or abnormalities in this process can lead to chromosomal instability and potentially result in genetic disorders or cell dysfunction.
Learn more about Prometaphase at
brainly.com/question/30693803
#SPJ4
What is it called when scientists carefully examine a new result by someone else in their field of study?
Answers
Answer:
a peer review
Explanation:
Answer: Peer review.
Explanation: Peer review is the evaluation of work, idea or research via close examination of others that are expert in that field or that are in same competence.
what is difference between electron microscope and light microscope?
Answers
Answer:
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscope
Hope it is helpful !!!
Answer:
The answer is:
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes
Hope it helps you.
Thank you!
Which of the following best supports the
hypothesis that the difference in leaf color is
genetically controlled?
a. The number of germinated seeds in dish A on
days 7 and 14
b. The death of all the yellow-leaved seedlings
c. The number of yellow-leaved seedlings in dish
A on day 7
d. The existence of yellow-leaved seedlings as
well as green-leaved ones on day 14 in dish B
Answers
the existence of yellow-leaved seedlings as well as green-leaved ones on day 14 in dish B.
Will seedlings that are yellow regrowth?The plant abandons the leaf after it stops producing chlorophyll and starts utilizing any remaining nutrients in the leaf.Because of this, you usually can't convert a leaf back to green once it turns yellow.
Should I remove the seedlings' yellow leaves?Yellow leaves might ruin an otherwise stunning plant because they aren't always attractive.A plant will look more healthier and more attractive if the dying or dead leaves are removed, which can also improve plant appearance.Feel free to keep the plant's yellow leaves on it if you do not even mind the way they seem.
to know more about yellow-leaved seedlings visit:
https://brainly.com/question/21320682
#SPJ1
In a collosion between two billard balls, the total amount of energy before the collsion is equal to the total energy after the collsion.
true or false?
Answers
If the forces acting on an object are balanced, they must
O act in the same direction.
O result in a net force of ON.
O act in three different directions.
O result in a net force greater than ON.
Answers
I hope this helps you !
Answer:act in the same direction
Explanation:
a textile manufacturer obtained a sample of 50 bolts of cloth from a day’s output. each bolt is carefully inspected and the number of imperfections is recorded as follows:
Answers
The mean of the data set is calculated by summing up the number of imperfections for each bolt and dividing by the total number of bolts, which is 50.
(0 x 32 + 1 x 12 + 2 x 5 + 3 x 1)/50 = 0.9
The median of the data set is the middle value when the data is arranged in numerical order. In this case, the median is 1 since it has 25 bolts with 0 imperfections and 25 bolts with 1 or more imperfections.
The mode of the data set is the value that appears most frequently. In this case, the mode is 0 since it is the value with the highest frequency (32 bolts).
Learn more about median here: brainly.com/question/28060453
#SPJ4
Complete quetion:
A textile manufacturer obtained a sample of 50 bolts of cloth from a? day's output. Each bolt is carefully inspected and the number of imperfections is recorded in the accompanying table. Find the? mean, median, and mode for these sample data.
Number of imperfections: 0 1 2 3
Number of bolts: 32 12 5 1
The mean of the data set is_________ (Type an integer or a decimal)
The median of the data set is _________.
The mode of the data set is ___________