Which of the following is the major glycolytic pathway used by plants and animals?
A. Tricarboxylic acid cycle
B. Pentose phosphate pathway
C. Entner-Doudoroff pathway
D. Embden-Meyerhof pathway
Answer: D
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Which steps compose a plant’s triple response to ethylene?
A. Seedlings bend toward the sun, seedling stem thickens, and the seedling stem bends, forming a hook. B. Seedling stem stops elongating, seedling stem thickens, and the seedling stem bends, forming a hook. C. Seedling stem stops elongating, seedling stem thickens, and the seedling undergoes apoptosis. D. Seedling bends away from the sun, seedling stem thickens, and the seedling stem bends, forming a hook.
In Drosophila melanogaster, the gene for eye color is located on the X chromosome. The allele for red eye color
(Xw+) is dominant over the allele for white eye color (Xw). You examine a vial of 100 flies that are all offspring from a single genetic cross. You see only red-eyed females present, but you see both red-eyed and white-eyed males present. The genotypes of the parents were ____.
a. Xw+Xw+; Xw+Y b. XwXw; Xw+Y c. Xw+Xw; XwY d. Xw+Xw; Xw+Y e. XwXw; XwY
Answer the question using the accompanying figure. The muscle indicated by the letter ‘B’ is analogous to the ____
muscle in a human.
a. calf b. deltoid c. biceps d. tongue e. triceps
After the centromeres separate during mitosis, the chromatids, now called _______, move toward opposite poles of the spindle.
a. centrosomes b. kinetochores c. half-spindles d. asters e. daughter chromosomes