Consider the cladogram. mc014-1.jpg Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom
sponges
roundworms
annelids
chordates
The right answer is roundworms
In the scientific sense, worm refers to the primitive form of organization of the Bilaterians. The three groups of animals (roundworms, flatworms and ringed worms) have a fundamental bilateral symmetry. Their appearance, probably at the very beginning of the Cambrian (primary era), marks an important stage in the evolution of living beings. In spite of their apparent simplicity, they inaugurate a new type of anatomical organization which will then be taken over by all other animal species. The different tissues or specialized organs, come from one of the three embryonic leaves (endoderm, mesoderm and ectoderm) inaugurated by these verses.
Describe the function of the structure pictured below.
a. Spore production
b. Food absorption
c. Water uptake
d. Enzyme release
Spores are the reproducing body of an organism. Option A is correct. The function of the structure in the given picture is spore production.
Spores:
Spores are the reproducing body. They are found in the lower organisms such as Fungi, algae, and lower plants.
Spores can be Haploid or Diploid depending upon the life cycle.
In the picture, The lower blob-like structure is a stalk that produces spores and a small ball-like structure is spores.
Food is absorbed inside the stomach. Enzymes are released from the cells.Therefore, the function of the structure in the given picture is spore production.
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An example of mitosis at work is a leaf
a turning yellow.
b growing.
c taking in carbon dioxide.
d hosting a caterpillar.
PLEASE HELP IN A TEST
The most-accepted theory for the origin of the universe is called the ? . This theory suggests that our universe explosively expanded into existence from a small, dense, hot singularity.
what is the difference between a sceintific theory and a scientific law
Answer:
A scientific theory is a set of concepts, a scientific law is a constant and unchanging rule and norm.
Explanation:
A scientific theory is a set of concepts, including abstractions of observable phenomena and quantifiable properties, together with rules (scientific laws) that express the relationships between observations of such concepts. An example of this is the theory of relativity.
A scientific law is a scientific proposition that affirms a constant relationship between two or more variables or factors, each of which represents a property or measurement of specific systems. An example of this is Newton's Laws.
Given that polyurethane is a huge polymer (mw >>?????????,????????? daltons), why is it important that the polyurethanase is a secreted enzyme? if we assume that the polyurethane is the source of energy for the "elvis meltdown!" by stewart, smith and shields page ??? organism, how can material (carbon atoms) from it fi nd its way into the central metabolic pathways of this microbe? what is the "entry point"? what happens after its entry into the metabolic pathway?
The reason that polyurethane is important as a secreted enzyme is that most exoenzymes roles are to break down lager macromolecules outside of the cell so they are able to enter the cell. Exoenzymes are therefore more effective as large molecules.
If polyurethane is an energy source, it would first be broken down by exoenzymes of the bacteria. Then it would be incorporated into the cell through facilitated diffusion. Due to its rich carbon, the energy source would enter the glycolysis pathway, then the Krebs cycle (for aerobic bacteria). The energy source would be used in the making of ATPs.
Polyurethanase is an enzyme emitted by the microorganism so as to break polyurethane. Since the polymer is a significant wellspring of energy for the life form, it should be separated all together for etpum"s development.
Further details
Polyurethane
It is a polymer made out of organic units and carbamate links join them. While most polyurethanes are thermosetting polymers that don't liquefy when warmed, thermoplastic polyurethanes are likewise accessible. Polyurethanes are available in numerous parts of present-day life. They present a class of polymers that have discovered a far-reaching use in the medical and mechanical fields. Polyurethanes can be found in items such as furniture, coatings, cement, constructional materials, paints, elastomers, filaments and paddings. Polyurethane ought to be curtailed to PUR in consistence with authority German and International benchmarks.
Polyurethanase
It can be defined as such an enzyme which is secreted by microbes and used for the breakdown of polyurethane. In this breakdown process energy is released that is utilized by microorganisms.
Bio-degradation of Polyurethane
In spite of their microbial obstruction, polyurethane is attacked by microscopic organisms however the component to explain its bio-degradation is unknown. There are reports from microscopic organisms and parasites that are equipped for the breakdown of polyurethane yet the examinations about the proteins that assault the plastic are centered around bacterial compounds as it were. The enzyme is of sort esterase and protease for the most part since these chemicals are unspecific and can perceive a few regions in the polyurethane particle and hydrolyze it.
Answer details
Subject: Biology
Level: College
Keywords
Polyurethane Polyurethanase Bio-degradation of PolyurethaneLearn more to evaluate
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earth's magnetic field affects what?
Energy in most ecosystems must flow through autotrophs because ______.
Energy in most ecosystems must flow through autotrophs because only autotrophs can convert solar energy in chemical energy.
Explanation:
This suggests that these are organisms which are entirely based on the Greek name self-producers that can produce complex organic materials by fixing together simple building blocks in their local situation. E.g plants on land. Photosynthesis in plants transforms solar energy into chemical energy using electrons and protons from water. The method of photosynthesis in plants involves a series of steps and reactions that use solar energy, water, and carbon dioxide to produce organic aggregates and oxygen.
The southern migration of which african people may have led to a significant increase in the incidence of malaria?
a. bantu
b. turkana
c. masai
d. efe
The answer is Bantu. They had already developed immunity to malaria due to exposure in their native environment. As they migrated southwards to conquer more land, they met the pygmies and the Khoisan. The Bantus had carried with them the malaria vectors. When the mosquitos infected the pygmies and the Khoisan populations, who had no immunity against malaria, the disease reduced their populations drastically hence enabling the Bantus to conquer their land.
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Paraphrase the following text:
Things that are nonliving never had the characteristics of life, and never will. Things that are dead once did have the characteristics of life, but when they die, they lose some of the characteristics. So in science, dead is not the same as nonliving. A rock is nonliving, a fallen tree is dead, and a moose is living.
Who can initiate a capability based-assessment (cba)?
Capability based-assessment can be initiated by any Department of Defense organization, or it may be based on an approved Joint Concept, a Concepts of Operations (CONOPS), or an identified operational need.
In addition, this analysis is meant to identify, validate and prioritize capability gaps, determine the attributes or standards of the capabilities, identify and assess potential non-materiel solutions, and provide recommendations for addressing the gaps.
Final answer:
A capability based-assessment can be initiated by various entities such as government agencies, non-profits, educational institutions, or businesses. It is based on the capability approach, which focuses on providing individuals with the necessary resources to achieve basic positive capabilities and live a life worthy of human dignity.
Explanation:
A capability based-assessment (CBA) is a method of evaluation that can be initiated by various stakeholders depending on the context, including government agencies, non-profit organizations, educational institutions, or businesses. The CBA is anchored on the capability approach, which was developed by Amartya Sen and further elaborated by Martha Nussbaum. This approach emphasizes treating each person with dignity and focuses on enhancing individual choices and freedoms rather than merely assessing achievements.
Martha Nussbaum specifically argues for the importance of providing sufficient resources to individuals so that they can enjoy a set of basic positive capabilities that are inherent to all humans. The goal is to ensure that each person's life is not so deprived of these resources that it becomes unworthy of human dignity. This respect for individual needs and recognition of diverse experiences is one of the major benefits of the capability approach.
In a living organism, at which stage does segregation of gene pairs takes place
Answer:
Segregation of gene pairs occurs during meiosis.
Explanation:
Almost all cells that make up an individual have paired chromosomes, called homologous chromosomes. The gametes of this individual, however, have only one chromosome from each pair. This reduction in the number of chromosomes occurs because the cells that give rise to gametes undergo meiosis, a type of cell division in which, in one step, the separation (segregation) of homologous chromosomes occurs, where segregation of gene pairs occurs.
Since genes are located on chromosomes, the separation of homologues is also the separation of genes, those genes located on the same locus as homologous chromosomes and related to determining the same trait.
An organism with two identical genes for a trait is said to be ______ for that trait. select one:
a. diplontic
b. heterozygous
c. homologous
d. homozygous
which protein would you expect to find closer to the wells where the sample was loaded: a protein with a molecular weight of 10,000 Da or a 75,000 Da protein?
Final answer:
In a gel electrophoresis, the protein with a molecular weight of 10,000 Da would be found closer to the wells than the 75,000 Da protein because smaller proteins migrate faster through the gel.
Explanation:
When considering which protein would be found closer to the wells in a gel electrophoresis setup, we need to take into account the molecular weights of the two proteins in question. Generally, smaller proteins move faster through the gel matrix, due to lesser resistance encountered within the gel's pores. A protein with a molecular weight of 10,000 Daltons (Da) would exhibit faster migration compared to a larger protein with a molecular weight of 75,000 Da. Therefore, after running the gel electrophoresis, one would expect to find the 10,000 Da protein closer to the wells than the 75,000 Da protein because it is smaller and moves more quickly through the gel.
Feedback from others can reduce the size of the unknown pane and increase the size of the ____ pane. blind hidden unknown open
Can the genotype for a gray-bodied fly be determined? why or why not? describe all of the possible genotypes for a fly with that phenotype. *
during the light dependent reaction of photosynthesis ___ is decomposed to supply hydrogen ions to produce nadph and important energy carrying molecules used to help produce glucose during the light independent reaction
Answer:
C) H20 (usatestprep)
Explanation:
H2O is decomposed to produce hydrogen ions. These ions combine with NADP to form the energy-carrying molecule, NADPH.
Water is broken down into hydroxyl and hydrogen ions, as well as oxygen, during the light reaction. This stage sees the transformation of light energy into chemical energy, which is used in the light independent reaction.
What is the role of water in light independent reaction?When water is split, oxygen, hydrogen, and electrons are released. These electrons travel through chloroplast structures and produce ATP via chemiosmosis.
NADPH, which is used in the light-independent processes, is created from the hydrogen.
Water's function in photosynthesis is to provide the light reactions with electrons. The light reactions and the dark reactions are the two phases of photosynthesis.
Therefore, during the light dependent reaction of photosynthesis, water is decomposed to supply hydrogen ions to produce NADPH.
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According to the theory of endosymbiosis,early eukaryotes evolved by symbiotic association of prokaryotes. Witch two protists evolved from a symbiotic relationship of organisms. Which resulted in eukaryotic organisms containing chloroplasts
Answer:
The protists that probably would have originated from endosymbiosis were amoeba and paramecium. On the basis of the theory of endosymbiosis, it is possible that some of the non-photosynthetic species produced a symbiotic association with organisms that possessed the tendency to perform photosynthesis with the help of chloroplasts. These species than would have gained the tendency to perform photosynthesis because of the supplementation of chloroplasts into their cells, and thus led to the formation of eukaryotic species comprising chloroplasts.
How can karyotype analysis detect genetic disorders lab 12-2 answers?
Karyotype enable viewing of the physical attributes of chromosomes. When compared to the karyotype of a normal individual, any abnormalities in chromosomes can be identified by either noticing an abnormal number of chromosomes or pairing (aneuploidy), or regional changes within chromosomes such as shorter or longer than normal chromosomes due to translocations.
Which federal legislation sets standards for maximum noise levels
Answer: The correct answer is-
Noise Control Act .
Noise Control Act is also termed as Noise pollution and abatement Act, which was established in the year 1972 by federal legislation of United States.
This act initiated a federal program for the regulation of noise pollution with the intention of protecting health of human beings by minimizing the annoying noise in the general public. It sets standards for the maximum noise levels so that noise pollution can be controlled.
Thus, Noise Control Act is the right answer.
Blood pressure results from the force of blood fluids pressing against the walls of blood vessels. Hypertension, or high blood pressure, is often caused by a constriction of the blood vessels by fatty deposits in artery walls. However, another cause of high blood pressure can be the intake of too much sodium in foods and table salt.
Why would too much salt intake cause someone to develop high blood pressure?
Excessive sodium intake leads to water retention which increases blood volume and pressure against artery walls, causing high blood pressure or hypertension. It's important to manage sodium intake to prevent the serious health risks associated with hypertension.
Why Excessive Salt Intake Causes High Blood Pressure
High blood pressure, known as hypertension, is a condition where the force of blood against the artery walls is too high. A common cause of hypertension is the excessive intake of sodium, which is found in salt. When we consume too much sodium, the body retains extra water to dilute the sodium levels. This increase in water volume in the bloodstream creates more pressure on the artery walls, leading to high blood pressure. Persistent hypertension increases the risk of heart attacks, strokes, and other serious cardiovascular diseases. It is crucial to maintain a diet lower in sodium to help manage or prevent high blood pressure, alongside other lifestyle choices such as regular exercise and avoiding smoking.
The human body can absorb some of the _____ that is synthesized by intestinal bacteria. vitamin k riboflavin thiamin vitamin a
The human body can absorb some of the thiamine that is synthesized by the intestinal bacteria.
Thiamine is also known as vitamin B1. It is a water soluble vitamin. Thiamine is naturally found in dairy food products like milk, eggs, meat, cheese, etc. The vitamin B1 or thiamine helps the body tissues in the break down of carbohydrates to make food that are needed by the cells in the body.
What is the expected growth mile markers for a 6-month infant?
After fertilization, the ovule develops into a seed. can you match the parts of the ovule with the corresponding parts of the seed? drag the terms on the left to the appropriate blanks on the right to complete the sentences. resethelp
*not biology it’s science *
How can farm chemicals pollute water and why is it hard to keep these chemicals from getting into nearby water
Final answer:
Farm chemicals including fertilizers and pesticides can cause water pollution through runoff and infiltration, leading to issues like eutrophication and health impacts. It is challenging to prevent this pollution due to chemical mobility and widespread agricultural practices. Measures such as reduced fertilizer use and preserving wetlands can help mitigate these effects.
Explanation:
Farm chemicals can pollute water by entering water bodies through runoff and infiltration. When chemicals like fertilizers and pesticides are applied to fields, some are washed away by rain into rivers, lakes, or groundwater. This can cause eutrophication, leading to excessive algae growth, oxygen depletion, and formation of dead zones in aquatic environments. Pesticides can harm aquatic life and potentially affect human health. Preventing chemical pollutants from reaching water sources is difficult due to the prevalent use and mobility of these chemicals through soil and water systems.
Chemical pollution affects global water quality and the health of ecosystems and humans. Agricultural practices involving liberal use of nitrogen and pesticides contribute to this pollution. Preventing such pollution includes reducing fertilizer usage, preserving wetlands for filtration, and following safe chemical application guidelines.
what is the difference between single and a relationship? why people do like to be in a relationships?
I’m going to have to disagree with joe
(No hard feelings:D)
Most people like to be in a relationship because they want to feel loved. Especially for women. Woman know that guys aren’t always the most caring people in the world so when a guy shows a girl how much they care for them it mean the world to them. It shows that they are willing to give up the way they think in the world just to show them how much. Girls will see that and appreciate it. That’s why I’m a lot of romance movies woman see men being vulnerable and they want that so they seek it. I can’t really speak for men because I am not one, but I know for a fact that everyone just want to feel love in their life. That’s why 90% percent of people prefer to be in a relationship then be single.
Horses and donkeys can breed and produce offspring known as mules. yet horses and donkeys remain separate species. this is because of the __________ of mules.
a. prezygotic sterility
b. inviability
c. postzygotic inviability
d. sterility
e. hybrid breakdown
The answer is D. This ensures that the mule cannot have offsprings hence can't continue its generation. Sterility of the mule is due to mismatch of homologous chromosomes between the horse and the donkey leaving an extra lone horse chromosome on the mule (since a horse has 64 chromosomes and a donkey has 62).
a nurse is caring for a client experiencing acute alcohol withdrawal. identify medication(s) used to address acute alcohol withdrawal. list three (3) actions the nurse will take to review the effectiveness of the medication with a client experiencing acute alcohol withdrawal.
· These are the commonly prescribed medication for acute alcohol withdrawal one is chlordiazepoxide (Librium) and is usually given orally and the IM injection of vitamin B1 (thiamine) followed by several days of oral administration to prevent Wernicke's encephalopathy.
· The first action is to maintain the environment calm and minimize the noise this reduces stress, Process wherein SO and family members, supported by staff, provide information about how patient’s drinking and behavior have affected each one of them, helps patient acknowledge that drinking is a problem and has resulted in current situational crisis. Then monitor the patient to prevent suicidal attempts.
Which best describes the flow of genetic information?
a.the phenotype is controlled only by the genetic code of an organism.
b.proteins produce genes that control the production of alleles.
c.information is passed from proteins to the dna in the nucleus.
d.the general flow of genetic information is from dna to rna to protein?
Answer:
The general flow of genetic information is from DNA to RNA to protein
Explanation:
ap.ex
The flow of genetic information typically flows from DNA through RNA to proteins, hence option D is correct.
What is genetic information?An individual's genetic makeup is inherited from their parent organisms and is passed down through their genes.
Genetic information flow from DNA to RNA to proteins is the best way to explain the flow of genetic information. Information about each person is stored in their genes and is encoded in their DNA.
As a result, information begins to flow from DNA and is then converted into RNA. It is translated into proteins from RNA.
According to the central dogma, transcription is the process by which DNA information is converted into RNA, and the information in RNA aids in the translation of RNA into protein.
Therefore, genetic information typically flows from DNA through RNA to proteins, hence option D is correct.
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The blood vessels that bring deoxygenated blood back to the heart are called the