During mitosis, the rate of microtubule turnover
a. decreases.
b. stays the same.
c. doubles.
d. increases five- to tenfold.
Ans: d. increases five- to tenfold.
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Rhizopus stolonifer , commonly known as bread mold, is a(n):
1.Ascomycete
2.Basidiomycete
3.Chytrid
4.Zygomycete
If a trait has a heritability of 0.5, this means that
A. all variation in the population is caused by genotypic differences. B. all variation in the population is caused by environmental differences. C. the variation in the population is the result of epigenetic effects. D. the genotype and environment contribute equally to the variation seen in the population. E. None of these is true.
Most marine invertebrates are osmoconformers. This means that
A. that their body fluids contain the exact same solutes in the same concentration as their cells. B. that their body fluids contain the exact same solutes in the same concentration as their surroundings. C. the osmolarity of their body fluids is the same as their seawater environment. D. the osmolarity of their body fluids fluctuates between hypertonic to hypotonic depending on the season and the tides. E. the osmolarity of their body fluids is equal to that of the osmoregulators who inhabit the same environments.
Which of these taxonomic categories is more inclusive than family and less inclusive than class?
A) order B) domain C) kingdom D) genus