Challenging Biology Problems with Detailed Answers

Although we rely on coal, oil, and natural gas to produce energy, some environmental scientists have proposed that we use less fossil fuel. One reason to support this proposal is to
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_____ algae are important in the formation of coral reefs.BrownFireGolden-brownRed
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You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 25%. Calculate the frequency of the "A" allele. *1 point0.50.40.250.6
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A random mating population has an established frequency of 64% for organisms that are homozygous recessive for a given trait. What is the frequency of this recessive allele in the gene pool? *a. 0.8b. 0.32c. 0.6d. 0.2
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2. What is a genetic disorder?3. What is a congenital disorder?4. What is an example of a non-genetic conge
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describe 3 characteristics of life that archea bacteria have
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A bowl of ice cream is sitting on a table.Which is NOT conduction?A. The sunlight streaming through the window melts theice cream.B. The bowl is cold because of the ice cream.C. The table is cold because of the cold bowl.
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Which group of organisms in the aquarium contains the largest amount of energy? a) primary consumers, b) secondary consumers, c) producers, d) herbivores
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Calculate the membrane potential of a neuron at standard temperature under each of the following conditions: a. The concentration of sodium, potassium and chloride is the same on both the inside and the outside of the membrane. b. The concentration of ions inside and outside the cell are as given below, but the relative permeability is the same for the three ions. c. The concentration of ions inside and outside the cell are as given below, but the relative permeability of K is 100 times greater than that of Na+ and Cl-.[Na+]o=150mM; [Na+]i=15mM; [K+]o=5mM; [k+]i=100mM;[Cl]o=150mM; [????????]i=13mM;
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The major cause of global warming issun flare pollutionbiological magnificationmono-culture farmingburning fossil fuels
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Choose the true statements about amyloid fibrils. 3 options are correct.1) Because most newly synthesized proteins fold correctly, the accumulation of misfolded proteins (or fragments) tends to occur slowly, thus explaining the slow onset of disease.2) An amyloid fibril typically forms from aggregates of misfolded peptides resulting from frameshift mutations.3) An amyloid fibril is stabilized by hydrophobic interactions between aromatic residues.4) Soluble proteins that misfold and form amyloid fibrils become insoluble.5) Proteins that convert to an amyloid fibril structure tend to have low solubility in their native form.
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How many types of muscle tissue are there?A. 1 typeB. 2 typesC. 3 typesD. 4 types
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What type of sustainable development encourages enjoyment and conservation of biodiversity and habitats?a.Solar energyc.Ecotourismb.Organic farmingd.Wind farming
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Abdominal aorta is located in
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Who invented the cotton gin?
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How would the gravity change if the earth was farther away fro maybe sun?
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The temperature of the areas surrounding El Campo before Storm 1 and before Storm 2 was about 15C, and there was the same amount of water vapor in the air. Storm 2 had more rainfall than Storm 1.What were the conditions before Storm 2, and why did more rainfall with those conditions?i will give 30 pts PLZ ANSWER ASAP
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Which of the following has mechanical energy?Chose all the answers that applyA. bouncing ballB. water in a reservoir C. book on a tableD. person runningE. falling tree
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What is a trait, what are genes? How are they related to each other?
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How are gene pairs written out?
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What is a genotype and what is a phenotype? Also what are dominant and recessive alleles and how are they written out?
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how could large molecules cross the cell mebrane
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what stage of the cell cycle happens last?
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Which position of the pendulum would have the least amount of potential energy.
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