An Ss × Ss mating is performed. If the phenotypic ratio of the progeny is 3 S– (– indicates that the other allele is unknown) to 1 ss, then
A) the S allele is dominant to the s allele.
B) neither allele is dominant.
C) the s allele is dominant to the S allele.
D) the relationship between the alleles cannot be determined.
A) the S allele is dominant to the s allele.
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In eukaryotic cells, the enzymes involved in the tricarboxylic acid cycle (Kreb's cycle) are located
A. in the cristae. B. in the outer mitochondrial membrane. C. in the inner mitochondrial membrane. D. in the matrix of the mitochondria. E. in the cytoplasm.
The leading cause of human death around the
world is
a. heart disease. b. cancer. c. malnutrition and starvation. d. war. e. accidents
Mitochondria and chloroplasts have genomes that have evolved from the nuclear genomes in eukaryotes
Indicate whether the statement is true or false
Why is photosynthesis a coupled reaction?
A) Photosynthesis requires two reactants: carbon dioxide and water. B) Sunlight energy enters a plant and is ultimately lost as heat. C) The exergonic reaction occurs in the plant, and the endergonic reaction occurs in the sunlight. D) The exergonic reaction occurs in the plant, and the endergonic reaction occurs in the soil. E) An exergonic reaction occurs in the sunlight, and an endergonic reaction occurs in the plant.