Biology

What is the term that scientists use when comparing the properties of solids, liquids and gases?
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What are some enzymes that break down and build up Dna
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(b)Describe how the antibody gene could be isolated from an animal cell and introduced intoa crop plant such as maize.
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What is the Kinsey Scale?A. A six-point rating system that ranges from exclusively heterosexual to exclusively homosexual orientation.B. An in-depth guide to measure whether a loved one is homosexual or heterosexual.C. An instructional manual explaining acceptable homosexual, heterosexual, and bisexual behavior.D. A religious test which classifies a person's ability to live as a heterosexual.
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A scientist used radiation to change the mutation rates of a population of bugs. He then measured how many generations it took for bugs with different mutation rates to adapt to a new background by natural selection. On the graph below, the x-axis represents the mutation rate, and the y-axis represents the number of generations it took for the bugs to reach an average fitness of 90%.Using evidence from the graph explain how adaptation occurred more quickly as the mutation rate increased.
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if we accept genetically modified foods in our homes and use other drugs that affect out performance in life, how is using steroids or testosterone any different
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Sociable weavers are a species of bird found in Africa. All males of a colony work together to build a large nest that can house several hundred birds. This is an example of
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would squidward's children still be considered purebreds?
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You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T. You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion? PLEASE EXPLAIN YOUR ANSWER!A. single-stranded genomes always have a large percentage of purinesB. Double-stranded genomes have equal amounts of A and TC. Single-stranded genomes have a higher rate of mutation
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For C.E.R. Is meiosis just a longer process of mitosis ?
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A black mamba snake has a length of 2.67 m and a top speed of 3.96 m/s . Suppose a mongoose and a black mamba find themselves nose to nose. In an effort to escape, the snake accelerates at 1.47 m/s 2 from rest. How much time does it take the snake to reach its top speed?
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Use the following information to answer the following question.In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the ? hemoglobin alleles in the human gene pool.Again, if this population were in equilibrium and if the sickle-cell allele is recessive, what proportion of the population should be susceptible to sickle-cell anemia under typical conditions?Use the following information to answer the following question.In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the ? hemoglobin alleles in the human gene pool.Again, if this population were in equilibrium and if the sickle-cell allele is recessive, what proportion of the population should be susceptible to sickle-cell anemia under typical conditions?0.320.160.800.200.04
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The resting membrane potential depends on two factors that influence the magnitude and direction of Na+ and K+ diffusion across the plasma membrane. Identify these two factors. A. The presence of a resting membrane potential and leak channels. B. The presence of concentration gradients and Na+-K+ pumps. C. The presence of concentration gradients and voltage-gated channels. D. The presence of concentration gradients and leak channels.
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Read the statement:When Mendel crossed a purple-flowered pea plant with a white-flowered pea plant, the offspring were always X. When Mendel crossed the offspring with each other, the distribution was about Y purple and Z white. The more experiments Mendel did with pea plants, the closer they approached these percentages.Which option correctly replaces X, Y, and Z in the statement?a. X: purple Y: 25% Z: 75%b. X: white Y: 25% Z: 75%c. X: white Y: 75% Z: 25%d. X: purple Y: 75% Z: 25%
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which behavior is considered a courteous way to deal with a client
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You attend a lecture by a psychologist who uses terms such as free will and self-actualization. Which psychological perspective is most consistent with the points the psychologist presented?a. behaviorismb. humanismc. functionalismd. psychodynamic
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A theoretical protein, blue2, is coded for by the blu2 gene. This protein codes for a blue pigment used by the organism to protect it from damaging UV rays from sunlight. The enzyme alterase binding to the blu2 operator halts transcription of blue2. A blu2 operator mutation causes a conformational change that does not allow alterase to bind to operator.What kind of gene regulation of blue2 is being used? Positive Negative Secondary Splicing
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romsWhich energy source contributes the most to climate change?OA. NuclearB. HydroelectricOOC. GeothermalD. CoalSUBMIT
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What is a homogeneous structure and what are some examples
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Tardigrades, also called water bears, are microscopic segmented animals with eight legs. They are normally about 70 percent body water, but they can survive extreme dehydration (to just a few percent body water) for up to 10 years! After a decade you can add water and the tardigrades will start swimming around. You enter a lab and your new boss gives you five dehydrated tardigrades and asks you to demonstrate that the tardigrades are alive in their dehydrated state. How would you demonstrate this? a. Record their movement, because movement is characteristic of all life. b. Record their temperature, because all living organisms maintain body temperatures different from their environment. c. Record their energy use, because all living organisms acquire and use energy. d. None of the options listed demonstrate that the dehydrated tardigrades are alive
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what gas is used by plants during photosynthesis, where does it come from, and where does it enter the plant?
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11) What is the important outcome of meiosis I?
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Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the statements describe properties of exocytosis? a. Exocytosis is the primary method of transporting large molecules out of the cell. b. Exocytosis is the primary method of transporting large molecules into the cell c. Exocytosis uses transport vesicles to export materials from the cell d. Exocytosis uses membrane channel proteins to import materials into the cell. e. Exocytosis uses transport vesicles to import materials into the cell.
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In fruit flies, one genotype for red eyes is written XRXR. The R stands for the dominant allele for red eyes. What does the X stand for? the recessive allele for white eyes the female chromosome the codominant allele for pink eyes the male chromosome
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