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Scientists are working on a new technique to kill cancer cells by zapping them w
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1.00×1012 W) pulses of light that last for an extremely short…
Scientists are working on a new technique to kill cancer cells by zapping them w
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1×1012 Watts, pulses of light that last for an extremely sho…
Scientists are working on a synthetic vaccine (antigen) for a particular parasit
Scientists are working on a synthetic vaccine (antigen) for a particular parasite. The success of the vaccine hinges on the characteristics of DNA in peptide (protein) produced by…
Scientists believe that the human brain has evolved so that the infant brain can
Scientists believe that the human brain has evolved so that the infant brain can be highly responsive to the effects of experience. The brain is thought to produce an excess of ne…
Scientists can determine the age of ancient objects by a method called radiocarb
Scientists can determine the age of ancient objects by a method called radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactiv…
Scientists can determine the age of ancient objects by the method of radiocarbon
Scientists can determine the age of ancient objects by the method ofradiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive i…
Scientists can track the movement of proteins through the endomembrane system us
Scientists can track the movement of proteins through the endomembrane system using an approach known as a pulse-chase experiment. This experiment involves the “pulse” phase: Cell…
Scientists can track the movement of proteins through the endomembrane system us
Scientists can track the movement of proteins through the endomembrane system using an approach known as a pulse-chase experiment. This experiment involves the “pulse” phase: Cell…
Scientists can track the movement of proteins through the endomembrane system us
Scientists can track the movement of proteins through the endomembrane system using an approach know as a pulse-chase experiment. This experiment involves the "pulse" phase: Cells…
Scientists characterized the steady-state kinetics of cholesterol oxidase from B
Scientists characterized the steady-state kinetics of cholesterol oxidase from Brevibacterium sterolicum by measuring the rate of the reaction as a function of cholesterol and oxy…
Scientists compared the diets and health status of people from Japan, and Greece
Scientists compared the diets and health status of people from Japan, and Greece. They found that the percentage of calories coming from Fat was 40% in the average Greek diet and …
Scientists compared the diets and health status of people from Japan, and Greece
Scientists compared the diets and health status of people from Japan, and Greece. They found that the percentage of calories coming from Fat was 40% in the average Greek diet and …
Scientists conduct an experiment where they observe the process of protein synth
Scientists conduct an experiment where they observe the process of protein synthesis in a laboratory. Which observation occurs in Area A? removal of the GTP cap addition of the po…
Scientists conducted a study to assess the effectiveness of a new pill, Headache
Scientists conducted a study to assess the effectiveness of a new pill, HeadacheAway, to treat headaches. A group of 200 volunteers was randomly divided into two groups. One group…
Scientists conducted an experiment to test the effects of three different diets
Scientists conducted an experiment to test the effects of three different diets in chickens. They randomly assigned six chickens to each of the diet groups and fed them for a fixe…
Scientists design a new particle accelerator in which protons (mass 1.7 × 1027 k
Scientists design a new particle accelerator in which protons (mass 1.7 × 1027 kg) follow a circular trajectory given by r =ccos(kt2)^+csin(kt2)^, where c = 4.5 m and k = 8.0 × 10…
Scientists develop a chemical that binds to molecules that make quorum sensing p
Scientists develop a chemical that binds to molecules that make quorum sensing possible, rendering those molecules nonfunctional, If this chemical is incorporated into a mouthwash…
Scientists discover a barely significant periodicity in a solar neutrino experim
Scientists discover a barely significant periodicity in a solar neutrino experimentresults from a number of experiments between 1990 and 2001. Apparently the neutrino fluxvaries w…
Scientists discover a small, irregularly shaped object orbiting the Sun in an or
Scientists discover a small, irregularly shaped object orbiting the Sun in an orbit very close to the Sun, much closer than Mercury. This object is the only object to be found in …
Scientists discover the laws and theories about the natural world through observ
Scientists discover the laws and theories about the natural world through observations of our surroundings. In your reading, Neil deGrasse Tyson compares this scientific endeavor …
Scientists discovered a new species of freshwater fish that lives in a pond with
Scientists discovered a new species of freshwater fish that lives in a pond with a very low 02 level. When they measured the oxygen extraction efficiency of the fish, it was twice…
Scientists discovered a new species of freshwater fish that lives in a pond with
Scientists discovered a new species of freshwater fish that lives in a pond with a very low O2 level. When they measured the oxygen extraction efficiency of the fish, it was twice…
Scientists discovered a new species of freshwater fish that lives in a pond with
Scientists discovered a new species of freshwater fish that lives in a pond with a very low O2 level. When they measured the oxygen extraction efficiency of the fish, it was twice…
Scientists estimate that the asteroid that hit the earth was about 10 km in diam
Scientists estimate that the asteroid that hit the earth was about 10 km in diameter and that it would have been traveling at least as fast as 11 km/s . The density of asteroid ma…
Scientists have been puzzled for hundreds of years about some aspects of light t
Scientists have been puzzled for hundreds of years about some aspects of light that appear to contradict each other. In fact, light sometimes behaves like a wave and sometimes it …
Scientists have determined the genome sizes (megabases, Mb), number of genes, an
Scientists have determined the genome sizes (megabases, Mb), number of genes, and gene densities in various species. The data are shown in the graphs 1000 50000 45000 40000 35000 …
Scientists have developed a bacteria that they believe will lower the freezing p
Scientists have developed a bacteria that they believe will lower the freezing point of agricultural products. This innovation could save farmers $1 billion a year in crops now lo…
Scientists have developed a bacterium that they believe will lower the freezing
Scientists have developed a bacterium that they believe will lower the freezing point of tomatoes. This innovation could save farmers $1 billion a year in crops lost to frost dama…
Scientists have discovered a mosquito trapped in amber from 70 million years ago
Scientists have discovered a mosquito trapped in amber from 70 million years ago, and that mosquito has fed on a dinosaur(!). In your attempt to garner a bonus point in Dr. H's ge…
Scientists have discovered a new planet called Neurvana. Organisms on this plane
Scientists have discovered a new planet called Neurvana. Organisms on this planet use Cs+ and Li+ to regulate membrane potential and neuronal excitability. The physiological conce…
Scientists have engineered bacteria to produce human proteins such as human grow
Scientists have engineered bacteria to produce human proteins such as human growth hormone (hGH) to help treat dwarfism. Suppose the unmodified eukaryotic gene coding for hGH is i…
Scientists have engineered bacteria to produce human proteins such as insulin to
Scientists have engineered bacteria to produce human proteins such as insulin to help treat diabetes. Suppose the unmodified eukaryotic gene coding for insulin is inserted directl…
Scientists have found that a rare blood disease is inherited via mutant allele o
Scientists have found that a rare blood disease is inherited via mutant allele on autosomes. A specific population sample, which we will call A, showed that the observed frequency…
Scientists have introduced in bacteria a wild type gene coding for GFP (green fl
Scientists have introduced in bacteria a wild type gene coding for GFP (green fluorescent protein) or two engineered versions of this gene containing an additional cis-regulatory …
Scientists have known for centuries that we \"speak\" with the left hemisphere o
Scientists have known for centuries that we "speak" with the left hemisphere of the brain. You perform an experiment in which your subject was presented with an apple only to the …
Scientists have observed temporary suppression of B cell development in bone mar
Scientists have observed temporary suppression of B cell development in bone marrow during infection with a number of viruses, including hepatitis A, B, and C, influenza, and parv…
Scientists have recently constructed an artificial ribosomes in Vito from purifi
Scientists have recently constructed an artificial ribosomes in Vito from purified ribosomal proteins and rRNAs. Scientists have recently constructed an artificial ribosome in vit…
Scientists have speculated that element 126 might have a moderate stability allo
Scientists have speculated that element 126 might have a moderate stability allowing it to be synthesized and characterized. Predict what the condensed electron configuration of t…
Scientists have studied two species of sand lizards, the Mojave fringe-toed liza
Scientists have studied two species of sand lizards, the Mojave fringe-toed lizard and the western zebra-tailed lizard, to understand the extent to which the different structure o…
Scientists in the laboratory set up a uniform electric field of -2.300×103 V/m a
Scientists in the laboratory set up a uniform electric field of -2.300×103 V/m along the y-axis. In this same region, B=4.000×10-3 T along the z-axis. A proton moves at speed 5.90…
Scientists knew that the plant under consideration expresses phytochrome in its
Scientists knew that the plant under consideration expresses phytochrome in its leaves. Consider the experimental trial labeled "(a)" on the lefthand side in the diagram below. If…
Scientists knew they had to keep their cultures free from bacterial and viral co
Scientists knew they had to keep their cultures free from bacterial and viral contamination, and they knew t was possible for cells to contaminate one another if they got mixed up…
Scientists observe that when one anti-viral drug is used to treat an infected in
Scientists observe that when one anti-viral drug is used to treat an infected individual, the population of HIV within that individual person rapidly becomes resistant to that dru…
Scientists observing the wave on the open ocean measured the time between crests
Scientists observing the wave on the open ocean measured the time between crests to be 1.00h and the speed of the wave to be 800km/h . Computer models of the evolution of this eno…
Scientists often create a \"tree\" to indicate the evolutionary relationships of
Scientists often create a "tree" to indicate the evolutionary relationships of different organisms. If you were given this task for the following organisms (Bat, Butterfly, Fish a…
Scientists often want to know if the genetically transformed organism can pass i
Scientists often want to know if the genetically transformed organism can pass its new traits on to its offspring and future generations. To get this information, which would be a…
Scientists performed an experiment to determine in myocardial blood flow (MBF) w
Scientists performed an experiment to determine in myocardial blood flow (MBF) was associated with hypoxia. MBF was measured on two groups of subjects randomly assigned to experim…
Scientists plan to study a possible link between the development of arthritis an
Scientists plan to study a possible link between the development of arthritis and dietary factors. Consider the four research designs described below, and match the design with th…
Scientists produce large quantities of RNA by transcription in vitro rather than
Scientists produce large quantities of RNA by transcription in vitro rather than by expression of cloned genes in vivo primarily because (a) in vitro transcription removes the nee…
Scientists recently have proposed a reorganization of the phylogenetic system of
Scientists recently have proposed a reorganization of the phylogenetic system of classification to include the domain, a new taxonomic category higher (more inclusive) than the Ki…