In the origin of life, nucleotides were polymerized to form nucleic acids and amino acids were polymerized to form proteins.
What are polymers?Polymers are large chemical substances formed from smaller chemical substances called building blocks or monomers. They are formed by polymerization reactions.
Both nucleic acids and proteins are polymers. While nucleic acids are formed from monomers known as nucleotides, proteins are are polymers formed from amino acids.
Nucleotides are linked by covalent bonds to form nucleic acids while amino acids are linked together by peptide bonds to form proteins.
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Enter a nuclear equation for the fusion of two h-2 atoms to form he-3 and one neutron. express your answer as a nuclear equation.
The nuclear equation that represents the fusion of two H-2 atoms to form He-3 and one neutron is
[tex]\frac{2}{1} h + \frac{2}{1} h > > > > \frac{3}{2} he + \frac{1}{0} n[/tex]
In a nuclear reaction the nuclides are represented with the chemical symbol preceded by a superscript that represents the mass number (number of protons plus neutrons) and a subscript that represents the atomic number (number of protons).
What is a Nuclear reaction ?A nuclear reaction is a process in nuclear physics and nuclear chemistry where two nuclei or a nucleus and an outside subatomic particle meet to create one or more new nuclides. Consequently, at least one nuclide must change throughout a nuclear reaction.
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Scientists have proposed that chloroplasts and mitochondria arose by a process called , in which a smaller cell comes to live inside a larger cell.
Scientists have proposed that chloroplasts and mitochondria arose by a process called Endosymbiosis, in which a smaller cell comes to live inside a larger cell.
Endosymbiosis is a symbiotic connection in which one organism lives inside the other. The term "primary endosymbiosis" describes the first time an ancient eukaryotic cell internalized prokaryotes, giving rise to the mitochondria and chloroplasts.
Symbiotic- A tight ecological link between members of two (or more) distinct species is known as symbiosis. One species may gain from a symbiotic connection at the expense of the other, or both species may benefit only sometimes. The most famous example of symbiotic relationship is Lichen.
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The most important cell in the acute inflammatory response is an actively phagocytic cell called the ____________.
The most important cell in the acute inflammatory response is an actively phagocytic cell called the polymorphonuclear leukocyte.
What is a polymorphonuclear leukocyte?A polymorphonuclear leukocyte is a specialized immune cell that acts to eliminate and/or remove pathogenic agents by triggering inflammatory immune responses in the human body.
In conclusion, the most important cell in the acute inflammatory response is an actively phagocytic cell called polymorphonuclear leukocytes, which are neutrophils.
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Some biological anthropologists analyze human remains to provide legal evidence. this special type of anthropology is known as:__________
forensic anthropology
Some biological anthropologists analyze human remains to provide legal evidence. this special type of anthropology is known as forensic anthropology
What is Forensic anthropology?
Forensic anthropology, or the study of human remains, has an unique subfield called forensic anthropology, which uses archaeology and bone analysis to solve crimes.In criminal cases, forensic anthropologists frequently examine human remains:strategies for identifying people.Analyzing and cataloging human skeletal remains.evidence gathering.crime scene investigation.archaeological techniquesexcavation of forensic and archeological human graves.What is a forensic anthropology case study?Forensic anthropologists also research the living, identifying specific criminals from surveillance footage, figuring out people's ages to determine their responsibility for crimes, and figuring out the ages of subadults in seized child p_rn.To learn more forensic anthropology visit:
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When I give the exact address of someone, I am giving the ____________________?
a-absolute distance
b-relative location
c-relative distance
d-absolute location
In expressing a mammalian gene in e. coli, the most formidable obstacle is the presence of:_________
1) introns
2) exons
3) repressors
4) enhancers
5) integrators
Option 1: In expressing the mammalian genes in e.coli, the most formidable obstacle is Introns.
Introns are the nucleotide sequences that do not directly code for proteins. They reside in the genes of an organisms and are generally removed during transcription of an RNA molecule.
Our DNA comprises exons and introns, where exons are coding parts while introns are non-coding parts. Introns get stuck in between which leads to stopping the coding of DNA because it does not form any kind of protein. These are like gap which is not coded for protein. So to avoid this obstacle we replace it with exons by the process of splicing. This is because exons form proteins and thus can participate in DNA coding (as DNA is responsible for the synthesis of proteins). These are found in all creatures and all types of genes.
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Which measurement assesses the difference between measured cations (sodium and potassium) and anions (chloride and bicarbonate) in the blood?
The measurement that assesses the difference between measured cations (sodium and potassium) and anions (chloride and bicarbonate) in the blood is known as the Electrolyte test.
What is an electrolyte test?An electrolyte test may be characterized as a type of blood test that significantly acts measures or estimates the level of electrolyte imbalance in the body of an individual.
During the test, the actual level of electrolytes such as salts and minerals are estimated. This includes a variety of substances like sodium, potassium, chloride, carbonate, and bicarbonate ions. These compounds are typically found in the blood and conduct electrical impulses within the body of an individual.
Therefore, the electrolyte test is the measurement that assesses the difference between measured cations (sodium and potassium) and anions (chloride and bicarbonate) in the blood.
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View the pH scale below. If lemon has a pH of 2.0 and tomato juice has a pH of 4.0, how much more acidic is lemon juice vs. tomato juice?
A potentially hazardous or __ food is capable of supporting the rapid growth of harmful microorganisms.
A potentially hazardous or part of milk products good is capable of supporting the rapid growth of harmful microorganisms.
Why potentially hazardous foods be cooked to proper temperature?Bacteria that cause food poisoning grow at temperatures between 45 degrees Fahrenheit and 120 degrees Fahrenheit .The cooling requirements limits the length of time that potentially hazardous food is in the temperature range at which harmful bacteria can grow.
Potentially hazardous food means any food which consists in whole or in part of milk or milk products,eggs, meat, poultry,rice , shellfish, edible crustaceans ,raw seed sprouts and other ingredients in a form capable of supporting rapid and progressive growth of microorganisms.
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Transcription occurs in/at the __________ and produces __________ from a(n) __________ template.
Transcription occur in the cytoplasm in prokaryotes and in nucleus of eukaryotes and produces Complementary strands from an template Strand.
What do you mean by Transcription?Transcription is the process of copying segment of DNA into RNA. The segment of DNA transcribed into RNA molecules that can incode protein are said to produce messenger RNA. Other segment of DNA are copied into RNA molecules called non coding RNA 's .
Transcription takes place in nucleus of Eukaryotes,it uses DNA as a template makes an RNA molecules.
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How does the bottleneck effect undermine the effort of conservation biologists who are trying to save species nearing extinction?.
The bottleneck effect undermines the effort of conservation biologists who are trying to protect species nearing extinction by events such as floods, earthquakes, human habitat devastation, and drought can cause a population to drastically decline.
The bottleneck effect can undermine the conservation of efforts of biologists who saves species near extinction when the population’s size is drastically reduced due to environmental factors including starvation, earthquakes, floods, fires, disease, and droughts as well as human behaviors like speculative killing, widespread violence or planned to cull, and human population control. As a result, a smaller population with less genetic diversity is left to transmit genes to future generations of offspring through sexual reproduction.
Such events can reduce the variation in a population’s gene pool. Genetic diversity continues to be reduced, only gradually rising over time when random mutations take place or only when gene flow from another group happens.
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Animals, plants, and fungi are all multicellular eukaryotes. What unifying characteristics distinguish animals from members of these other two kingdoms?
please help me with this question
Animals, Plants, and Fungi are multicellular, meaning that they have more than one cell in their body. Each cell also has a nucleus in it, a property which the other two kingdoms, Bacteria and Eubacteria don't have.
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What occurence results from obstruction within the ventricals of the brain or inadequate reabsorption of cerebrospinal fluid?
Thinning and stretching of the cerebral mantle.
When developmental or acquired defects impede or destroy the CSF channels, CSF builds up under pressure within the ventricular system. The cerebral mantle thins and stretches as a result of the ventricles starting to enlarge. The name for this condition is hydrocephalus.What is hydrocephalus?A hydrocephalus is an abnormal accumulation of fluid in the brain's deep ventricles (cavities). The ventricles enlarge as a result of the extra fluid, placing pressure on the tissues of the brain. The fluid that covers and cushions the brain and spine is called cerebrospinal fluid (CSF), and it is transparent and colorless.To learn more about Hydrocephalus visit:
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How does the cryosphere help the biosphere ability to sustain life?
Answer: The cryosphere acts like a reflective shield, protecting Earth from getting too warm.
Explanation:
Snow and ice reflect more sunlight than open water or bare ground. The presence of snow and ice affects the heat and cooling of the earth's surface, affecting the planet's energy balance.
Why does natural selection not produce populations that are perfectly adapted to their environment?.
Natural selection not produce populations that are perfectly adapted to their environment because Changing environments may change the nature of adaptive traits in a population.
No single trait is optimal in all environments, and natural selection may favor different traits as the environment changes.
What is Natural selection ?An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this mechanism leads to the evolution and divergence of species.
Populations change throughout time through natural selection, becoming increasingly adapted to their surroundings. Natural selection is reliant on the environment and necessitates the presence of heritable variation within a population.Learn more about Natural selection here:
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Advise school leavers on ways to develop a positive attitude towards change that will assist them to adapt to a work environment
School dropouts can adopt a positive outlook on change in three ways that will help them adjust to the workplace:
Find and accept internship opportunities.Give your time voluntarily andNever stop learning.How will the above-listed points help a School leaver to adapt to a work environment?
School dropouts have the chance to experience what it's like to work for someone else by participating in internship programs and volunteering.
They can also study soft skills (those that are relevant to managing coworkers and customers) and hard skills (those that are directly related to the profession) during this time
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A biological theory, like the theory of evolution, that is widely accepted and supported by so many observations and experiments may be referred to as a principle or a:_________
A biological theory, like the theory of evolution, that is widely accepted and supported by so many observations and experiments may be referred to as a principle or a law.
What is a Law?This refers to statements which describes or predict a range of natural phenomena as a result of repeated experiments which has been performed and the authenticity has been prove by peers and other individuals.
A law is also referred to as principle and has been observed to be always true unlike due to the repeated scientific methods being done approving of its validity thereby making law the correct choice.
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Which letter correctly identifies a process of the hydrologic cycle in which the phase of water is changed from a liquid to a gas?
The change of phase of water from liquid to gas is known as evaporation.
What is evaporation?Evaporation is one of the major processes in the hydrologic cycle. The hydrologic cycle represents the cyclic movement of water molecules across various spheres of the earth.
During evaporation, water molecules in liquid form gain energy and transform into gas molecules, otherwise known as water vapor.
Evaporation represents one of the processes that lead to the formation of clouds. The condensation of the evaporated water leads to precipitation.
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In the psychoanalytic theory of sigmund freud, the __________, which is the basic emotional and psychic energy of life, is believed to be constituted by life instincts.
Libido is the basic emotional and psychic energy of life, is believed to be constituted by life instincts. This is according to the psychoanalytic theory of sigmund freud,
In psychoanalytic theory, the energy produced by sexual and survival instincts is referred to as libido. Sigmund Freud claimed that the libido is the motivation behind all conduct and is a component of the id. Despite the obviously sexual connotations that the word "libido" now has, Freud used it to refer to all psychic energy, not simply sexual energy.
According to Freud, the only aspect of personality that exists from birth is the id. He proposed that the id was a source of unconscious, primal energy. The id seeks pleasure and expects that its desires be met right away. The id is the motivation behind our desires and impulsive actions.
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A college campus including the students, birds, trees, sidewalks, and air makes up one complete ________. community ecosystem population organism
A college campus including the students, birds, trees, sidewalks, and air makes up one complete ecosystem.
Ecosystem consist all the plants and animals living in an area along with their environment in other words biotic and abiotic component of the environment together consist ecosystem.
Ecosystem can be of various types- Forest ecosystem, grassland ecosystem, desert ecosystem and tundra ecosystem.
An area that has its own flora and fauna and are constantly interacting with each other can be considered as ecosystem.
Hence a college campus including the students, birds, trees, sidewalks and air can makes up an ecosystem.
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What condition will increase the diffusion of molecules, such as neurotransmitters?
An increase in the number of neurotransmitters exocytosed by the presynaptic axon will increase the diffusion of molecules such as neurotransmitters.
what are neurotransmitters?
Any of a group of chemical agents released by neurons (nerve cells) to stimulate surrounding neurons, muscle cells, or gland cells allows impulses to be transmitted from one cell to the next throughout the nervous system. This is known as a neurotransmitter, also known as a chemical transmitter or chemical messenger.
These neurotransmitters are stored in synaptic vesicles of the axon terminals and are released during transmission of impulses from one neuron to another.
Neurotransmitter molecules are instantly destroyed by enzymes in the synaptic cleft after being released and binding to postsynaptic receptors; they are also absorbed by receptors in the presynaptic membrane and recycled.
Hence, if they are released in large amounts from the synaptic vesicles their diffusion will increase automatically.
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A carbohydrate composed of two covalently-bonded simple sugars (monosaccharides) is called a(n)?
A carbohydrate composed of two covalently bonded simple sugars is called a disaccharide.
Carbohydrates or sugars are one of the four main categories of the macromolecules that make up living things (the other three being nucleic acids, proteins and lipids). It can either be a simple sugar (sugar monomer or monosaccharide) or a polymer of simple sugars.
Carbohydrates are composed entirely of carbon, oxygen and hydrogen atoms. Simple sugars or monosaccharides contain six carbon atoms, twelve hydrogen atoms and six oxygen atoms. When two monosaccharides bond covalently, they form a disaccharide.
Some examples of disaccharides include:
Sucrose or table sugar - It is made up of one glucose molecule and one fructose moleculeLactose or milk sugar - It is made up of one glucose and one galactose moleculeMaltose or malt sugar - It is made up of two glucose molecules.Learn more about carbohydrates here:
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Which of the following is not cause by human interaction with the earth system
Answer:
Answer: C. mountain building
Air pollution, water pollution and deforestation are caused by human interaction with the earth system. Air, water and forests are abiotic (non-living) factors of the environment on which human population is dependent upon. Release of pollutants in the air and water due to human activities causes pollution. Forests are removed in order to derive resources like wood, medicines and for urban development hence, causes deforestation. Mountain building is a nature induced process and is not caused by human interactions with the earth system. Mountain formation is a geological process, which is caused by large scale movement of the earth's crust. Mountains are formed by folding and faulting of the earth's crust and due to volcanic activity.
Explanation:
First source of energy in living things.
From the big bang theory, after cooling the debris, allowed the formation of the following
Debris (Hydrogen and helium) from the big bang gravitationally clumped together, and frequently these clumps got big enough to start fusion in their centers and form stars.
What is big bang theory?
The Big Bang theory explains how the cosmos expanded from a highly dense and hot starting condition. The evolution of the observable cosmos from the earliest known times up to its later large-scale shape is explained by this prevalent cosmological model. A wide range of observable phenomena, such as the quantity of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure, are all thoroughly explained by the model.
Eventually, the large gaseous balls fuse hydrogen into heavier elements, which causes them to become stars. The periodic table's iron is created when stars combine light elements to create heavier ones.
The remaining elements of the periodic table are created as a result of the stars exploding, producing white dwarfs that explode, or forming neutron stars that collide and explode. The remaining hydrogen gas is now "contaminated" by this other material, and some of it forms an accretion disk in which planets form when it compresses under gravity.
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Iodophors and chloramines are similar in that they are both halogen-containing compounds that __________.
Iodophors and chloramines are similar because they are both halogen-containing compounds that slowly release their active ingredients because they release their active ingredients more slowly than the elemental forms of these halogens.
As we know, Iodophor is an iodine-containing solution used in the dairy and brewing industries as a sanitizer. Chloramines are disinfectants and are used to kill germs in drinking water. As both the compound used to kill bacteria, both contain halogen compounds which equalize the numbers of the hydrogen atoms.
Therefore, Iodophors and chloramines, both compounds, release their active ingredients slower because of their chemical properties, as halogen takes time to equalize the number of hydrogen atoms. Thus, Iodophors and chloramines are very active and effective and widely used by industries but are slower.
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What are the predisposing factors that make some people more biologically reactive than others? (check all that apply.)
Genetic make up and Prenatal experiences are the predisposing factors that make some people more biologically reactive than others
What are predisposing factors ?Predisposing elements are those that increase a child's likelihood of experiencing a problem (in this case, high anticipatory distress). These could include temperament, life experiences, or genetics. A specific incident or trigger that led to the current issue's emergence is referred to as a precipitating factor.
Predisposing traits were observed to include social structure, demographic parameters (age and gender), and (education, occupation, ethnicity, and other factors measuring status in the community, as well as coping and the health of the physical environment),Learn more about Predisposing factors here:
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To prevent the accumulation of hormones in our bodies, the hormones are constantly being metabolized and excreted. where are adrenal and gonadal steroid hormones excreted?
Hormones from the adrenal and gonadal sytems are eliminated through the urine or bile in the liver.
Unbound steroid hormones from the gonadal and adrenal glands are transformed in the liver, where they become inactive, and subsequently eliminated through the bile or urine. The lungs, cell metabolites, or feces do not contain adrenal or gonadal steroid hormones. The steroid hormones are broken down by several tissues, but mostly the liver, into physiologically inactive byproducts that are primarily excreted in the urine, although some are also removed via the bile and, finally, the feces. Analysis of urine steroids may aid in the diagnosis of endocrine disorders. The liver is the primary site of steroid metabolism. Tetrahydro derivatives are created in the first step by reducing double bonds and adding hydroxyl to the ring.
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The __________ nervous system is comprised of the brain and spinal cord. a. somatic b. peripheral c. sympathetic d. central please select the best answer from the choices provided a b c d
Answer:
d. central nervous system
Answer:
d. central
Explanation:
The notion that all behavior can be explained by the workings of the brain is commonly referred to as?
The notion that all behavior can be explained by the workings of the brain is commonly referred as materialism.
Materialism- A philosophical alternative to Cartesian dualism is materialism. According to dualism, the body and other physical objects, including the mind, are constituted of distinct "stuff." This theory is rejected by materialism, which contends that mental activities are products of physical processes.
Brain- The brain is a sophisticated organ that manages every bodily function as well as cognition, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger. The central nervous system, sometimes known as the CNS, is made up of the brain and the spinal cord that emanates from it.
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