Biology

The presence of a cancerous mass in a lung is the result ofA. Prolonged exposure to very dry airB. The introduction of chemicals through the skinC. Uncontrolled mitotic division and growth of cellsD. Meiotic cell division
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What are the four main steps of cellular respiration?
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why do you think primary productivity is important for the health of an ecosystem.
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You just bought two black guinea pigs from the pet store that are known to be heterozygous (Bb). You also know that black fur (BB) is dominant over white fur (bb), and that a lethal recessive allele is located only one cM away from the recessive b allele. You decide to start raising your own guinea pigs, but after mating these animals several times, you discover they produce only black progeny. a) How would you explain this result? b) If the original black guinea pigs produce an average of 10 offspring per mating, how many matings would you have to make with these same parents before you'd expect to see a white guinea pig? c) Indicate the most likely genotype of the white offspring.
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How do the chromosomes in most cells of an organism, such as the leaf cells of a plant, compare to the chromosomes in its reproductive cells, which are sperm and egg cells?
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The flow of genetic information from DNA to protein in eukaryotic cells is called the central dogma of biology. (a) State two reasons gene regulation must be regulated in eukaryotes (5 points) and (b) describe three processes that regulate gene expression in eukaryotes. In other words, what specific role does gene regulation accomplish in eukaryotes, and what are three methods of gene regulation. Be sure to include names of molecules that are affected by these three methods. (5 points each).
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Clouds begin to form in the atmosphere when __________ causes ___________ of water on Earth.A)the sun; evaporationB)altitude; condensationC)a temperature drop; evaporationD)the prevailing wind; convection currents
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What is the main explanation for the difference in basal metabolic rates between males and females of the same body weight?
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In peas, the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seeds is dominant (Y) and the trait for green seeds is recessive (y). A cross between two plants results in 292 tall yellow plants and 103 short green plants. Which of the following are most likely to be the genotypes of the parents?- TyYY x Ttyy- TTYy x TTYy- TTyy x TTYy- TtYy x TtYy
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The ____ protein is embedded in the membrane of Agrobacterium and senses the presence of acetosyringone from the wounded plant cell. (In your answer include the full name of the protein: for example ChvX or VirX, instead of the X protein.)
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Use the following terms to explain how specialization occurs: DNA, gene expression, differentiation *
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PLEASE HELP!!!!! I WILL MARK BRAINLIEST:))1.Compare and contrast the functions of the plant hormones auxin, ethylene, cytokinin, and gibberellin.2.Describe how water is pulled from the roots to the leaves of plants, including which parts of the plant are involved.3.Describe the functions of guard cells.4.Describe how sugar moves through a plant.5.Compare and contrast phototropism, geotropism, and thigmotropism by giving an example of each.
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Need help ASAP.1.) Explain the difference or similarities between CRISPR and at least one other type of Genetic Engineering Technique you have researched? 2.) What type of change to the DNA/RNA sequence is CRIPSR? 3.) How is CRISPR used to help people.
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Archaeal flagella __________. a. rotate as bacterial flagella do b. do not contain a filament c. grow by the addition of subunits at the tip d. are powered by the flow of hydrogen ions across the membrane
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1. How has the human population size changedthroughout history?
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Describe how diseases are spread happens in communities.Subject: Anatomy and Physiology
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Can you mathematically calculate the probabilities and genotypes of dihybrid crosses? If so, how? Also how can you mathematically calculate the probabilities of a regular punnet square mathematically?
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You would like to know whether the progeny of a pair of mated fruit flies are distributed among the resulting four phenotypic classes in a 1:1:1:1 ratio. You perform a chi-square test and obtain a p value of 0.04. Assuming you have done the test correctly, select the best interpretation of this result? A. The phenotypic ratio is actually 9:3:3:1 B. Approximately 4% of the offspring lie outside the range of values expected for a 1:1:1:1 ratio. C. The differences between the observed and expected counts are too large to be attributed to chance. D. The traits being studied are on separate chromosomes.
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Who is the theorist who linked intelligence and school success in constructing an intelligence test that continues to provide reasonable indicators of a student's ability to be successful in school?
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Two selectively permeable sacs A and B were submerged in a 45% glucose solution that was contained in a beaker. Sac A contained a 15% glucose solution and Sac contained a 15% sucrose solution. In which direction did net movement of water molecules occur? a. Only from Sac A to the beaker b. Only from Sac B to the beaker c. From the beaker to both sacs d. From both sacs to the beaker
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PLEASE HELP WILL GIVE BRAINLISTLocation T has an elevation of ...350 meters325 meters400 meters250 meters
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Using what you have learned in the lesson and the experiment, answer the following question incomplete sentences.Analyze the property of water you investigated and provide some real-world applications of theimportance of this property of water.
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True or false? The last ice age produced many different species mainly because populations dispersed and colonized new habitats.
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What is the symbolism behind Melinda finding the growing seed inside the apple during biology class?
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