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The overuse of antibiotics is causing a rise in the number of bacteria which are resistant to antibiotics. Which mechanism would most likely account for this?
Select one:
a. Through competition for reduced resources, the antibiotic-resistant bacteria thrive.
b. Through mutation, the bacteria change into other species.
c. Through natural selection, a few surviving antibiotic-resistant bacteria multiply.
d. Through movement to other habitats, bacteria find more places to live.
If a doctor prescribes tylenol iii with codeine, he or she has prescribed a __________.
a. stimulant
b. depressant
c. narcotic
d. hallucinogen please select the best answer from the choices provided. a b c d
The right option is c. narcotic
Tylenol iii with codeine belongs to the group of medications called narcotic analgesics (pain relievers). Narcotics are drugs that are administered to provide relief from severe pain. Narcotics are sometimes prescribed when other forms of pain relievers are not working. Examples of narcotics are hydrocodone, codeine, tramadol and opium.
An experiment was run to examine the kinetics of an enzyme catalyzed reaction of compound a with enzyme e to produce product (p) and the enzyme. the reaction is:
Blood rich in oxygen and nutrients are transported from the placenta to the fetus by the
Which molecule contributes to the greenhouse effect?
The molecule that contributes to the greenhouse effect are water molecules and methane.
What is the greenhouse effect?The greenhouse impact is the manner wherein warmth is trapped near Earth's floor by “greenhouse gases.” These warmth-trapping gases may be idea of as a blanket wrapped round Earth, retaining the planet toastier than it'd be with out them.
Carbon dioxide: Made of 1 carbon atom and oxygen atoms, carbon dioxide molecules make up a small fraction of the atmosphere, however have a big impact on climate.The molecules that make a contribution to the greenhouse impact are people with a nontrivial vapor stress at Earth’s floor temperature (in any other case they won’t be capable of evaporate into the atmosphere) and that are compounds withinside the experience of together with or extra elements.Read more about the greenhouse :
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When human-trafficking victims are children forced to work without pay, it is considered _____.
smuggling
severe
forced labor
sex tourism
Answer:
The answer is option B.
Explanation:
Components of human trafficking. With the end goal of misuse, which incorporates abusing the prostitution of others, sexual abuse, constrained work, bondage or comparative practices and the expulsion of organs.The United Nations characterizes human trafficking as the enrollment, transportation, exchange, harboring, or receipt of people by inappropriate means, for example, drive, snatching, extortion, or pressure for an ill-advised reason including constrained work or sexual misuse.
T cells produce and secrete factors that do not directly interact with invading microorganisms but that augment the body's defense mechanisms. these molecules are
When alzheimer disease appears in middle age rather than old age, it:
a. progresses more slowly.
b. progresses more rapidly.
c. causes death within a year.
d. is benign?
"why is it difficult to grow bordetella pertussis in a laboratory"
It is difficult to grow bordetella pertussis in a laboratory because of its inability to grow on ordinary laboratory media such as nutrient agar or macconkey agar. The organism will only grow on specialized media supplemented with charcoal, blood (20%), potato (starch) in order to absorb toxic substances which can inhibit its growth in the agar.
________ are small, extraterrestrial particles that glow brightly and burn up as they travel through earth's atmosphere
Modern h. sapiens differ from the archaic form in that moderns have
Final answer:
Modern Homo sapiens are distinguished from archaic forms by their larger, more complex brains, smaller faces, jaws, and front teeth, and changes in skull morphology such as less pronounced brow ridges and the development of a prominent chin. They also have a more elaborate tool kit, including the blade tool industry.
Explanation:
Differences between Modern Homo sapiens and Archaic Homo sapiens:
The evolutionary journey from archaic Homo species to modern Homo sapiens has been marked by significant changes in physical anatomy and behavior. Modern humans are biologically distinct from their archaic predecessors in a number of ways. One of the most notable physical differences is the size and structure of the brain. Modern H. sapiens have a much larger brain capacity, averaging around 1,200 to 1,400 cubic centimeters, just like some archaic forms, but with a more developed prefrontal cortex and smaller face, jaws, and front teeth. Another distinctive characteristic of modern humans is their skull morphology, which generally includes a rounder skull, less prominent brow ridges, and a prominent chin, unlike their archaic counterparts who had thicker skulls and more pronounced brow ridges.
Furthermore, the behavioral changes that accompany these physical evolutions are substantial. Modern humans demonstrate a significant leap in tool-making abilities, transitioning from the Mousterian prepared-core flake tools to a more sophisticated blade tool industry. This advancement allowed the crafting of tools from a wider variety of materials including bone, antler, and ivory, which facilitated the development of a rich material culture in the Upper Paleolithic period. Additionally, modern H. sapiens displayed advanced cognitive functions and social behaviors, leading some researchers to speculate about their use of language and complex social structures.
In _____ the heterozygote's phenotype is somewhat intermediate between the two homozygotes. select one:
a. codominance
b. complete dominance
c. incomplete dominance
d. epistasis
Which of the below is an example of an indirect food additive?
The growth and secretion of the adrenal cortex is stimulated by the
stanley has entered a rehabilitation facility for treatment of his addiction to barbiturates. he is immediately prevented from using the drugs and experiences agitation, restlessness, increased respiration, and insomnia. this phase of treatment is called ____.
Answer:
Stanley has entered a rehabilitation facility for treatment of his addiction to barbiturates. He is immediately prevented from using the drugs and experiences agitation, restlessness, increased respiration, and insomnia. this phase of treatment is called detoxification.
Explanation:
Detoxification is the physiological or medicinal removal of toxic substances from a living organism. Detox from drugs or opioids can be dangerous for the person engaging in the detox, therefore having medical supervision during this phase of the treatment is highly needed. After a long time of the body being addicted to a specific drug, the more severe the detoxification symptoms are going to be, including agitation, restlessness, anxiety, flu like symptoms, and others.
chromosomal mutation definition
Answer:
Chromosomal mutation is the change in the structure or number of chromosome.
Explanation:
Chromosomal mutation simply refers to a change in the structure of chromosomes.
The structure of chromosome changes as a result of deletion, duplication, inversion or translocation.
Deletion refers to the loss of certain segments of the chromosome.
Duplication of segments of the chromosome leads to repetition of some genes.
Inversion is the change in the order of genes on a chromosome.
Translocation involves the insertion of chromosomal segments into a non-homologous chromosome.
Chromosome number can change as a result of non-disjunction during meiosis. This may result in aneuploidic or polyploidic chromosomal conditions
If "quercus" is the genus name and "rubrus" is the species name for a red oak tree, which is the most correct written form of the red oak tree's scientific name?
Using binomial nomenclature, a red oak tree's scientific name should be written as 'Quercus rubrus.' The genus name is capitalized, and the species name is all in lowercase. Both names are typically italicized.
Explanation:In biology, when writing scientific names for organisms, the naming follows the binomial nomenclature format. This involves writing the genus name first followed by the species name. The correct written form, therefore, of the scientific name for a red oak tree would be Quercus rubrus. The genus name starts with a capital letter, the species name should be in lowercase and the whole name should be written in italics.
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All insertion sequences (is elements) contain two features that are essential for their movement. what are these two elements?
Insertion sequences (IS elements) are equipped with inverted repeats and a transposase enzyme, both critical for their ability to move within the genome.
All insertion sequences (IS elements) contain two essential features that are essential for their movement: inverted repeats and a transposase enzyme. The inverted repeats are short DNA sequences found at both ends of the IS element that are necessary for the transposase to recognize and cut the DNA for movement. The transposase is an enzyme encoded by the IS element itself that catalyzes the excision and integration of the IS element into a new location within the genome.
__________ are underground areas that have the ability to contain and provide water sources.a.shamalsb.wadisc.seasd.aquifers please select the best answer from the choices provided.
Answer:
Aquifers
Explanation:
Groundwater is an important source of water. It is the water present in the deeper layers of soil below the water table. Some of the important sources of groundwater are rainfall, rivers, ponds, etc. When it pours, water goes down in the soil layers to fill the spaces present below the ground. When the groundwater is accumulated between the hard rock layer, it becomes aquifer. The aquifers serve as a source of fresh water as the water present in them can be pumped out using techniques such as tube wells.
Movement of dissolved substances in fluid from areas of high concentration to areas of low concentration
Suppose a non-native species of beetle was introduced into a forest. How would you know if the beetle was becoming an invasive species
Final answer:
To identify if a beetle is becoming an invasive species, look for rapid population growth, harm to the ecosystem, or outcompetition of native species. Citizen reports and early response are key for controlling the spread. Signs include damage to trees, die-offs, and reduced insect diversity.
Explanation:
To determine if a non-native beetle is becoming an invasive species in a forest, several indicators can be observed. An invasive species often has rapid population growth, outcompetes native species for resources, and causes harm to the environment, economy, or human health. Early detection and rapid response are crucial for controlling invasive species. When citizens like the individual in Chicago who noticed the Asian longhorned beetle become informed and proactive, they can significantly aid in the monitoring and control efforts by reporting sightings to appropriate authorities.
Common signs of an invasive beetle might include noticeable damage to tree bark, leaves, or fruit, due to feeding or breeding activities, a sudden die-off of native trees, or an absence of previous insect diversity due to the invasive beetle outcompeting native species. Effective strategies like engaging the public through education, consistent monitoring, and establishing an early warning system are vital for successful management and potentially eradicating an invasive species before it becomes too widespread.
Most of the energy in the typical animal cell is produced in the __________.
The Animal Functional Genomics Laboratory at Mississippi State University conducts genetic research involving farm animals. The results can be used to genetically modify commercially useful animals. Which idea can BEST be used to argue in favor of this research? A) Genetic changes can be designed to make cows yield more milk. B) Genetic changes can be used to create an entirely new species. C) Genetic changes can be used to control the populations of farm animals. D) Genetic changes can be designed to control the animals' group behavior.
Genetic modifications can be used to produce or select potentially useful properties of an organism. This is the major advantage of genetically modified organisms.
For example, genetic changes can be designed to make cows yield more milk or fight diseases better.
"an organism's phenotype is describing what about that organism"
A 3-base deletion in the aauaaa sequence in the 3' untranslated region of an mrna that eliminates the aau, thereby preventing rna polymerase from polyadenylation the mrna would have the effect of:
Which is the correct order of events of sound transmission through the ear? 1. sound waves strike the eardrum 2. the ear ossicles vibrate 3. hair cells of the organ of corti vibrate 4. the perilymph in the cochlea moves 5. sound waves enter the external auditory canal?
The correct order of events of sound transmission through the ear is;
5. Sound waves enter the external auditory canal
1. Sound waves strike the eardrum
2. The ear ossicles vibrate
4. The perilymph in the cochlea moves
3. Hair cells of the organ of corti vibrate
Final answer:
The correct order of events of sound transmission through the ear is as follows: sound waves enter the external auditory canal, sound waves strike the eardrum and make it vibrate, ear ossicles vibrate and amplify the vibrations, the perilymph in the cochlea moves, and hair cells of the organ of Corti vibrate.
Explanation:
The correct order of events of sound transmission through the ear is as follows:
The sound waves enter the external auditory canal.The sound waves strike the eardrum (tympanic membrane) and make it vibrate.The ear ossicles (hammer, anvil, and stirrup) vibrate and amplify the vibrations.The stapes presses into the oval window, causing the perilymph in the cochlea to move.The hair cells of the organ of Corti vibrate in response to the moving perilymph, generating nerve impulses that are transmitted to the brain.When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. this arrest of division is an example of __________ mitosis s phase. density-dependent inhibition. lack of nutrients?
Which of these people has the lowest risk of suffering serious consequences from a foodborne illness?
The natural and synthetic drugs derived from morhphine are know as
Your kidneys have an important effect on blood pressure. The kidneys controls plasma volume by controlling how much _____________________.
Answer:
C. Water a person excretes
Explanation:
The kidneys controls the amount of water a person excretes which effects the blood pressure by controlling the volume of plasma.