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Biology
Kamari Sosa
The pH of a basic solution is less than 7 true or false
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Biology
Darwin Perkins
Which of the following uses percentages to relate the parts to the whole? a. circle graph b. line graph c. bar graph d. none of these
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Biology
Steven Wagner
What kind of limited factor is parasitism considered
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Biology
Victoria Patrick
A dominant mutation in Drosophila called Delta causes changes in wing morphology in Delta / + heterozygots. Homozygosity for this mutation (Delta / Delta) is lethal. In a population of 150 flies, it was determined that 60 bad normal wings and 90 had abnormal wings. a. What are the allele frequencies in this population? b. Using the allele frequencies calculated in part (a), how many total zygotes must be produced by this population in order for you to count 160 viable adults in the next generation? c. Given that there is random mating, no migration, and no mutation, and ignoring the effects of genetic drift, what are the expected numbers of the different genotypes in the next generation if 160 viable offspring of the population in part (a) are counted? d. Is this next generation at Hardy-Weinberg equilibrium? Why or why not?
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Biology
Chance Houston
The offspring of a cross between parents with different true breeding traits
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Biology
Brenna Jackson
Who discovered tuberculosis bacteria?
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Biology
King Wade
Which of the following cell surface modifications and/or specialized cells may be found within the epithelium that lines the trachea?
a. cilia
b. goblet cells
c. keratinization
d. microvilli
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Biology
Berlynn
A cell contains a 30% solute concentration and 70% water concentration. If the cell is placed in a
solution that is 60% solute and 40% water, what will happen to the cell, and what condition is the
cell in?
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Biology
Guest
During mitosis, what phase are chromosomes * not * visible?
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Biology
Brisa Hubbard
Taxol is an anticancer drug extracted from the Pacific yew tree. In animal cells, Taxol disrupts microtubule formation by binding to microtubules and accelerating their assembly from the protein precursor tubulin. Surprisingly, this stops mitosis. Specifically, Taxol must affect
A) chromatid assembly.
B) the fibers of the mitotic spindle.
C) anaphase.
D) the S phase of the cell cycle.
E) formation of the centrioles.
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Biology
Averi Barajas
Why are squid unique among invertebrates?
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Biology
Brooklynn Shaw
Name 2 things that can force populations to evolve
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Biology
Case Chapman
What are four general vegetation types found in africa?
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Biology
Morrison
What caused an increase in phosphorus pollution in Florida waters?
A Diminished wetlands could not filter as much phosphorus pollution.
B Phosphorus was introduced during canal building.
C Phosphorus seeped from aquifer rocks.
D Phosphorus seeped from exposed wetland soils.
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Biology
Allison Washington
Why do plants produce less oxygen during the night?
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