Answer:
Convergent evolution is the independent evolution of similar features in species of different lineages. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy. The recurrent evolution of flight is a classic example, as flying insects, birds, pterosaurs, and bats have independently evolved the useful capacity of flight. Functionally similar features that have arisen through convergent evolution are analogous, whereas homologous structures or traits have a common origin but can have dissimilar functions. Bird, bat, and pterosaur wings are analogous structures, but their forelimbs are homologous, sharing an ancestral state despite serving different functions.
The opposite of convergence is divergent evolution, where related species evolve different traits. Convergent evolution is similar to parallel evolution, which occurs when two independent species evolve in the same direction and thus independently acquire similar characteristics; for instance, gliding frogs have evolved in parallel from multiple types of tree frog.
Many instances of convergent evolution are known in plants, including the repeated development of C4 photosynthesis, seed dispersal by fleshy fruits adapted to be eaten by animals, and carnivory.
Hope this helped you out! ;P
What is the first thing to occur in dna replication?
Which nursing diagnosis would be most appropriate for a child with idiopathic thrombocytopenic purpura?
Answer:
possible answers
chicken pox
bruise
petechia
nosebleeds
head trauma (bleeding in the brain)
any type of blood disorders
Explanation:
Inadequate tissue perfusion associated with poor platelet formation is the nursing diagnosis that is most appropriate for a child with idiopathic thrombocytopenic purpura.
What is idiopathic thrombocytopenic purpura?Idiopathic thrombocytopenic purpura is a blood confusion distinguished by an irregular reduction in the number of platelets in the blood gradually.
Therefore, it is well described above.
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On the Earth, there are several scientific classifications for animals of all types, whether scaled, feathered, or furry. When is comes to animals, all are under certain kingdoms. Which of the following would represent animals that are very closely related to one another?
Groups
Genus
Species
Families
Answer:
C.) Species
Explanation:
Since you mentioned classifications for animals, the answer would not be families. Genus is a more general classification for animals and groups aren't even part of the classification for animals, so that would leave us with one answer, species.
Hope this helps ya :D
Which structures bring oxygen from the trachea to the lungs?
A.) capillaries
B.) bronchi
C.) alveoli
D.) bronchioles
The trachea is a single tube through with oxygen passes to the double-tubed bronchi as we breathe air inside. The two tubes of bronchi are called left and right bronchi and are often termed as alveoli and bronchioles
I believe the answer is B!
((:
Hope this helps
Answer:
C - Alveoli (I'm pretty sure that's right)
Explanation:
Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream.
Consuela is an overweight young woman who wants to lose 10 pounds. the most reliable and safe way for her to lose this weight is to ________.
the most reliable and safe way for her to lose this weight is to decrease her usual daily energy intake
The most reliable and safe way for Consuela to lose 10 pounds is by combining a reduced-calorie diet with regular physical activity, aiming to lose about 1/2 to 2 pounds per week and avoiding programs that promise unrealistic quick fixes.
The goal should be to lose about 1/2 to 2 pounds per week. This can be achieved by making healthy food choices, eating smaller portions, and building exercise into daily life.
For example, one might start tracking their calories every day and reducing their calorie intake by 10% each week. It's also beneficial to set realistic exercise goals, such as engaging in moderate-intensity aerobic activity for an hour a day, 5 days a week. Regular checking of body weight can help adjust the level of activity and caloric intake to find a balance that promotes steady weight loss. It is important to avoid programs that promise quick fixes like losing weight without diet or exercise, eating as much as you want, or rapid weight loss. These are often not sustainable and can even be harmful. Instead, focus on lifestyle changes that can be maintained over the long term for better health outcomes.
11. Winds are labeled according to which of the following?
a. whether they originate on land or water
b. the direction from which they blow
c. the region in which they can be found
d. none of the above
Winds are primarily labeled according to b.the direction from which they blow. The region where they can be found can also provide additional categorization, but the primary label is the wind's directionality.
Explanation:Winds are commonly referred to and labeled according to the b.direction from which they blow. For instance, a wind coming from the south and moving toward the north is known as a southerly wind. It's important to note that the wind's global location or the region in which they can be found (for example, prevailing westerlies, easterlies, etc.) can also provide additional categorizations, but the primary label for winds relates to their directionality.
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SOMEONE EXPLAIN THIS FAMILY TREE TO ME?!?!?!
https://1drv.ms/u/s!AuGj85clQGVhkCar_8s1I2T54mH6
I Can’t click the link
John and Tina has Rick, Helen and Paul. Helen married Patrick and had Molly and Jason with him. Paul married Clair and they had 3 children; Phil, Ana, and Sue. If you have any questions, please ask, and mark brainliest if you can! Thanks so much!
in knowledge-based economies, education plays an important role in the lives of citizens and is an important factor in their quality of life. ALL BUT ONE is the result of an appropriate education on one's quality of life.
a. limiting factor. May determine the job an individual will have.
b. May be excluded from the power of networking through social connections.
c. Quantity and quality of available jobs; working hours, safety, ethics of employers.
d. lack of opportunity. Individual will have fewer prospects for economic prosperity in their lifetime.
Answer:
B
Explanation:
Just did the assignment and buddy got me wrong
Final answer:
Education in knowledge-based economies impacts quality of life, career prospects, and economic stability; it also enhances networking. However, b. exclusion from networking is not a typical result of appropriate education.
Explanation:
In knowledge-based economies, education has a profound impact on various aspects of quality of life. Firstly, education acts as a limiting factor in determining the jobs an individual may have, directly influencing career prospects and economic stability. Secondly, through social connections and networking, education opens doors to opportunities that might otherwise be inaccessible. Thirdly, the quantity and quality of jobs, working conditions, workplace safety, and the ethics of employers are all influenced by the level of education and skills of the workforce.
Lastly, a lack of education can lead to a lack of opportunity, resulting in fewer prospects for economic prosperity over an individual's lifetime. Given these outcomes, the result of an appropriate education on one's quality of life that is NOT consistent with the others is being 'excluded from the power of networking through social connections.' An appropriate education typically enhances one's ability to network and build social connections, rather than exclude them.
The animals found in australia who carry their young in pouches are collectively known as _______________.
The animals found in australia who carry their young in pouches are collectively known as marsupials .
Answer: marsupials
Which is a base? A. Substance C is formed from the reaction of an acid and a base. B. Substance A gives off H+ ions that combine with OH– ions when dissolved in water. C. Substance B gives off OH– ions that combine with H+ ions when dissolved in water.
Answer:
C. Substance B gives off OH– ions that combine with H+ ions when dissolved in water.
Explanation:
A base is a substance that interacts with water to yield excess hydroxide ions in an aqueous solution.
Bases are certain metallic oxides, metallic hydroxides and aqueous ammonia.
Bases reacts with acids to produce salts which is substance C as described in first option.
Substance A is an acid and it gives off Hydrogen ion.
In chemistry, a base is a substance that donates OH- ions when dissolved in water. Based on the descriptions, Substance B is the base as it releases OH- ions. Substance A acts as an acid by releasing H+ ions, and Substance C is likely a salt, formed from the reaction of an acid and a base.
Explanation:In the context of chemistry, a base is a substance that donates hydroxide ions (OH-) when dissolved in water. Of the substances listed in your question, Substance B exhibits this behavior, as it is mentioned to release OH- ions when dissolved in water. Hence, Substance B is the base. Substance A, conversely, is acting as an acid, as it donates H+ ions. Substance C, the result of a reaction between an acid and a base (a process known as neutralization), is likely a salt.
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Which is not a difference between a population showing exponential growth and a population showing logistic growth? a. food limits b. disease limits c. carrying capacity d. mutation rate Please select the best answer from the choices provided A B C D
A,B AND D are definantly wrong because food and diesease are differences. I belive C is your answer.
Answer:
d. mutation rate
Explanation:
Exponential growth and logistic growth are terms related to the growth rate of a population. Exponential growth refers to the growth of a population relative to growth per individual. That is, it refers to the growth of population size as a result of the increase in the number of individuals in that population.
Logistic growth, on the other hand, refers to the decrease in population size relative to the number of individuals. That is, this growth is related to the death or departure of individuals from a population as a result of limiting factors in the environment.
Both types of growth may differ in the presence of dietary limits, disease limits and carrying capacity. However, the mutation rate (which refers to the frequency of various types of mutations over time.) Is not a factor that differentiates the exponential limit from the logistic limit.
Any object struck at its natural frequency will vibrate violently. This is known as resonance. Applications of this include earthquakes knocking down building and
Answer:
d
Explanation:
The American Chestnut was the predominant tree in American forests until the 1900s when a fungal pathogen was brought to the United States. This pathogen, known as Chestnut blight, destroyed nearly all of the chestnut trees across the country. Now hickories, oaks, and maples are more prominent in mature forests across the US. Which explanation best depicts the occurrences in American forests in the United States?
Answer: Graph C?
Explanation:
Answer: B - Graph B
Explanation: Since the population of oak trees are significantly reduced and the oaks produce the major food source for the squirrels (acorns), the squirrel population will decrease.
Which most directly led to the increase in food supply as part of the green revolution?
Answer:
the crossbreeding and genetic engineering of crops, such as wheat, rice, and other grains
Wheat rice and grains
Which of the following substances contain nucleotides made up of a sugar, phosphate, and a nitrogen base?
DNA
RNA
Both DNA and RNA
Neither DNA nor RNA
Which of the following is single-stranded, found throughout the cell, and has the bases A, C, U, and G?
DNA
RNA
Both DNA and RNA
Neither DNA nor RNA
The sequence of amino acids effects which of the following
the amount of cytoplasm
the number of proteins
the size of the ribosomes
the shape of the protein
Answer:
i) The substances that nucleotides that are made up of sugar, phosphates and a nitrogen base are both DNA and RNA. Both are composed of a carbon ringed structure that is a sugar base with the only difference of -OH group that is absent in DNA and present in RNA, to this carbon ring phosphate diester bond helps in the attachment of nucleotide monomers, and nitrogenous base is attached to the ring at one of the carbon.
ii) RNA is single-stranded structure that is found thought the cell and has bases A, C, U and G. It can't be DNA, because DNA is double stranded helix with adenine, guanine, cytosine and thymine as their bases uracil is not present in DNA. The sugar of DNA lacks the hydroxyl group at 2' position of carbon atom. Both DNA and RNA has a base of a sugar, to which one of the four nitrogenous base is attached and one or two phosphate groups are attached.
iii) The shape of protein is effected by the sequence of amino acids. As through the central dogma of transcription and translation lead to the formation of proteins, any change in the gene would mislead to the production of transcript RNA, this mutated RNA will result in the formation of mutated proteins with change in one or more amino acids. Change in a single amino acid will lead to change in the shape or structure of protein that would ultimately change the function of that protein.
Decomposers break down dead plant and animal materials. What happens next?
Answer:
Decomposers mine them from the dead so that these recycled materials can feed the living. In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere, where it's available to plants for photosynthesis
Explanation:
Answer:
Decomposers as you said break down dead plants and such, after that. The animal or plant turns into recycled materials that feed other organisms. They then release carbon dioxide into the air.
Explanation:
What is the definition of a dihybrid cross?
Answer:
A dihybrid cross describes a mating experiment between two organisms that are identically hybrid for two traits. A hybrid organism is one that is heterozygous, which means that is carries two different alleles at a particular genetic position, or locus. hope this helps you
Explanation:
A Dihybrid cross is defined as a cross between 2 true-breeding parents that possess different forms of two genes.
What is Dihybrid?A dihybrid cross is defined as a mating experiment between two organisms that are alike hybrid for two traits. A hybrid organism is one that is heterozygous, which means that it carries two different alleles at a single genetic position or locus.For example color and the shape of seeds at a time they picked. He picked the wrinkled-green seed and round-yellow seed and meet them. He procures only round-yellow seeds in the F1 generation.Genetics is the offspring of two individuals that are unlike with respect to two pairs of genes.To learn more about dihybrid refer to:
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Ovulation involves the release of the _____________ from a vesicular follicle.
Answer:
mature egg
Explanation:
Ovulation is an event that occurs during the menstrual cycle of the female under the influence of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Ovarian follicles rupture and release the secondary oocyte ovarian cells from a vesicular follicle. After the release of an egg, it can be fertilized by the sperm during fertilization.
SOMEONE HELP! WILL GIVE YOU BRAINEST
Why does the method of building a sustainable lobster fishery with casitas require additional improvements to be considered effective?
The casitas are too complicated to build, requiring far too much human effort.
The cost of the casitas is too large, so cheaper materials need to be found.
The lobsters tend to avoid the casitas, so alternative designs need to be tested.
The materials from which the casitas are made eventually degrade, which adds debris to the water.
Your answer is “the cost of the casitas is too large, so cheaper materials need to be found
The need for improvements in sustainable lobster fishery with casitas comes from the degradation of materials adding debris to the ocean, ecological disruptions from altering natural processes, and high maintenance in harsh marine environments.
The method of building a sustainable lobster fishery with casitas requires additional improvements to be effective because the materials from which the casitas are made eventually degrade. This degradation adds debris to the water, which can harm the marine environment. Moreover, creating structures that interfere with natural processes, like longshore drift, can lead to unintended ecological consequences, such as altered transport patterns for silt and marine life, and may require additional measures, like sand bypass systems, to mitigate negative impacts. Marine structures also face challenges due to the harsh operating environment, high energy consumption, and potential impact on marine life, suggesting a need for designs that better align with nature's way of building.
Considering the wavelengths of light shown below, the pigments in the granum absorb mainly in which range?
A. green, which is why plants are green
B. the infrared
C. the entire spectrum of white light
D. blue-violet and red-orange
Answer:
D. blue-violet and red-orange
Explanation:
The light reactions of photosynthesis use only certain wavelengths of visible light.
Light absorbing molecules known as pigments in the membranes of a granum absorb mainly in blue-violet and red-orange wavelengths. We do not see these absorbed wavelengths. What we see when we look at a leaf are the green wavelengths that the pigments transmit and reflect.
The pigments in the granum primarily absorb light in the blue-violet and red-orange range. Chlorophylls A and B are responsible for this absorption, which excludes green wavelengths, making plants appear green. The correct answer is D. blue-violet and red-orange.
The pigments in the granum, specifically chlorophyll A and chlorophyll B, absorb mainly in the blue-violet and red-orange range of the spectrum. These pigments are responsible for capturing the light energy used in photosynthesis. Chlorophyll A absorbs light with wavelengths in the range of 430 nm to 660 nm, while Chlorophyll B absorbs light with wavelengths in the range of 450 nm to 640 nm. Since these pigments do not absorb light in the green wavelength range (500-600nm), green light is reflected, which is why plants appear green to us. Therefore, the accurate answer to the student's question is D. blue-violet and red-orange.
oscar is 75 years old. his doctor has encouraged him to walk briskly each day in order to maintain or improve his cognitive performance. what is the most likely reason for this
Answer:
he might be rinning the marithon and may not have been in shape
Explanation:
________is a haploid cell with half the reproductive information from the parent.
Answer:
gamete
Explanation:
Gamete is a haploid cell with half the reproductive information from the parent.
What are the characteristics of gametes?A gamete is a reproductive cell of an animal or plant. In animals, female gametes are called ova or egg cells, and male gametes are called sperm. Ova and sperm are haploid cells, with each cell carrying only one copy of each chromosome.
The sperm and egg are specialised cells called gametes and are unique in comparison to most of the other cells in the body, as they only contain half the usual number of chromosomes.
Gametes are formed through meiosis (reduction division), in which a germ cell undergoes two fissions, resulting in the production of four gametes.
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Nitrogen and phosphorus are important limiting nutrients in some aquatic ecosystems and are determining factors in the amount of phytoplankton growth. When there is a large input of nitrogen and phosphorus the growth of phytoplankton and algae drastically increases, resulting in a large accumulation called an algal bloom and this in turn causes aphotic zones in aquatic ecosystems. In aphotic zones, photosynthetic organisms cannot survive. We would expect this to happen most often in what ecosystem(s)?
A) ocean
B) lake and pond
C) ocean and river
D) river and stream
Answer:
B. Lake and pond
Explanation:
Bcoz they are lentic water bodies.. Nutrients release in that get accumulate easily.. And most of the ponds are present near human zone. Or agricultural fields.
The extra amount of fertilizer flows and get down in ponds and increases the amount of N and P
We would expect this to happen most often in lakes and ponds.
Why does soap dissolve the membrane easily
Answer:
The membrane is made of lipids (fats)
Explanation:
Soap dissolves membranes due to its hydrophilic and hydrophobic properties. The soap molecules align along the membrane, disrupt the structure, and thus dissolve the membrane. This is how soap eliminates germs on hands.
Explanation:Soap has the ability to dissolve a membrane due to its structure. Soaps are made of molecules each with a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail. When soap comes into contact with these membranes, the hydrophobic tails of the soap molecule attempt to avoid water while the hydrophilic heads interact with water. This leads the soap molecules to align along the membrane, disrupting its structure and thus dissolving it. For example, when soap is applied on dirty hands, it dissolves the membranes of germs, which helps in removing them.
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If an animal had 44 chromosomes in its sex cells, how many chromosomes total will they have?
Answer:
88
Explanation:
Sex cells are usually haploid for chromosome number/ genetic material. Sex cells carry one of the set of alleles of a gene. This means a sex cell has half the number of chromosomes of the autosomal cell. Therefore, in this case, the autosomal cell will have 44 * 2 (=88) number of chromosomes.
A diagnosis of one type of cardiovascular disease does not necessarily indicate risk for another type true or false
Answer:
True
Explanation:
There are several cardiovascular issues which are caused due to varied reasons. Hence it is very essential to conduct different diagnosis to determine the exact cause of problem.
For instance -
Abnormal Heart Rhythms causes slowing or fastening of heart beat. There is no physical damage of any of the substructures of heart but there is lack in neural co-ordination.
On the other hand Aorta Disease and Marfan syndrome are caused due to widening or tearing of aorta.
Cardiomyopathy is the problem associated with heart muscle.
Different heart diseases are due to different factors and hence there must be individual diagnosis methods for all the cardiovascular issues.
Hence, the given statement is true
A byproduct of amino acid catabolism in the liver is
Answer:
B. Urea
Explanation:
Urea is a byproduct of amino acid catabolism in the liver.Excess amino acids undergoes the process of deamination in the liver. During the process of deamination, the amino acids are broken down into amine group and a carboxyl group.The amine group is then reduced to ammonia by addition of a hydrogen atom while the carboxyl group or the non-nitrogenous part is converted to fats or carbohydrates. Ammonia is then removed from the body in form of urea.The principal byproduct of amino acid catabolism in the liver is urea, which is formed from the ammonia generated during the transamination process and subsequently excreted in urine.
Explanation:A byproduct of amino acid catabolism in the liver is urea. During the breakdown of amino acids, the liver plays a crucial role in removing the amino group from amino acids in a process called transamination. This amino group is eventually converted into ammonia, which is toxic to the body. To safely excrete this ammonia, the liver synthesizes urea, combining two ammonia molecules with a carbon dioxide molecule. Urea is then eliminated from the body through urine, making it the principal waste product of amino acid catabolism in mammals.
The liver is not the only organ involved; tissues such as the kidney, small intestine, muscles, and adipose tissue also participate in amino acid metabolism. When glucose levels are low, such as during fasting or starvation, amino acids are more likely to undergo catabolism, with their carbon skeletons being utilized for energy production through the citric acid cycle.
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In which direction does Earth rotate?
eastward around its axis
in an ellipse around the Sun
counterclockwise around the Sun
from north to south around its axis
What force acts between Earth and the moon?
gravity
mass
motion
newtons
Answer:
The answer is its eastward around its axis
Explanation:
please help
The cell membrane is important for maintaining ___________ because it controls what enters and leaves the cell.
shape
homeostasis
temperature
pressure
Answer: Homeostasis
Remember homeostasis is the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. The cell membrane is providing an equilibrium inside and outside the cell. Hope this helped :)
Which is incorrect about restriction enzymes? they are key tools that make genetic engineering possible. they are found in bacteria and eukaryotes. they produce dna fragments with "sticky" ends. a specific enzyme will always cut at the same sequence. bacteria may possess them naturally to rid themselves of viral dna?
They are found in bacteria and eukaryotes is false
Final answer:
The incorrect statement about restriction enzymes is that they are found in bacteria and eukaryotes; in reality, they are found primarily in bacteria and are essential tools in genetic engineering.
Explanation:
The incorrect statement about restriction enzymes is that they are found in both bacteria and eukaryotes. Restriction enzymes, also known as restriction endonucleases, are primarily found in bacteria. They serve as a defense mechanism against viral infections by cutting foreign DNA that enters the bacterial cell. Each restriction enzyme is specific to a particular DNA sequence, which it recognizes and cuts, producing fragments. This process is crucial in genetic engineering, allowing for the manipulation of DNA sequences. Bacteria naturally possess these enzymes to protect themselves from viral DNA. Moreover, some restriction enzymes produce DNA fragments with ‘sticky’ ends, which are essential for DNA recombination techniques.