A microscope that has a tatol magnification of 1,500X when using the oil immersion objective has an ocular of what power?
A.1.5X
B. 30X
C. 15X
D. 150X
C. 15X
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Answer the following statements true (T) or false (F)
1. Molecular homologies indicate that living species evolved from a common ancestor or interrelated group of common ancestors. 2. Microevolution would be reflected in disequilibrium in Hardy-Weinberg. 3. In red-wing blackbirds, females tend to choose males with the most desirable territories. Males compete for territories. This is an example of intersexual selection combined with intrasexual selection. 4. Sickle-cell anemia is a disease that occurred from a point mutation in the replication of DNA. That mutation causes a change of an amino acid in ?-globulin. Nonrandom mating (not mating with any individual that has the allele for the mutation) could result in the removal of the mutated allele from a population. This would be an example of natural selection. 5. Neutral variation is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein.
Dispersion is
A. the ability of an individual to move. B. the rate of movement of a population. C. the spatial distribution of abiotic factors. D. the spatial distribution of individuals. E. the timing of reproduction.
The oxygen in Earths atmosphere:
a. was manufactured inside stars. b. was added to the atmosphere by plant life. c. has grown more abundant since the origin of Earth. d. all of these e. none of these
Photosystems are mainly
a. light-trapping molecules. b. enzymes for splitting water. c. clusters of ATP molecules. d. sugar assembly sites. e. electron transport systems.