Which of the following would be most effective and practical for routine home disinfection of a toothbrush between uses?
A. Hydrogen peroxide
B. 70% Isopropyl alcohol
C. Bleach
D. Glutaraldehyde
Answer: A
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The individualistic model of a community as an assemblage coexisting primarily of species similar in their physiological requirements was proposed by
A. Frederic Clements. B. Charles Darwin. C. Henry Allan Gleason. D. David Tilman. E. Joseph Connell.
Plants use ________ and ________ wavelengths of light and reflect the ________ wavelength.
A. green, blue, red B. white, green, blue C. red, blue, green D. white, green, red E. green, red, blue
How can two pea plants that have different genotypes for seed color be identical in phenotype?
a) one of the two plants could be homozygous for the dominant allele, while the other could be homozygous form the recessive allele b) one of the two plants could be homozygous for the dominant allele, while the other could be heterozygous c) genotype has no relation to phenotype d) seed color in pea plants is not genetically determined e) one of the two plants could be homozygous for the recessive allele, while the other could be heterozygous
Match each of the main classes of spindle microtubules from list 1 with their functions and features from list 2
List 1 List 2 (A) Interpolar microtubules 1. Stabilized by interactions with each other via motor proteins (B) Aster microtubules 2. Interact with the cell cortex (C) Kinetochore microtubules 3. Link chromosomes to a spindle pole 4. Depolymerize to promote anaphase A 5. Depolymerize to promote anaphase B