What does the fact that all organisms use essentially the same genetic code suggest about the origin of life?
What will be an ideal response?
ANSWER: The common use of essentially the same genetic code in all types of life on Earth suggests
that all life evolved from a common ancestor and that the genetic language of that common
ancestor has been retained.
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A flagellated protist that is sexually transmitted is
A. Entamoeba. B. Giardia. C. Trichomonas. D. Plasmodium. E. Paramecium.
Which of the following protein fibers is used for cellular movement and are extremely thin in size?
A. cilia B. centrosome C. actin filaments D. intermediate filaments E. microtubules
What is true of eudicots but not monocots?
A. Eudicots have flower parts usually in multiples of 4 or 5. B. Eudicots have true seed leaves but monocots do not. C. Eudicots have vascular bundles scattered in their stems. D. Eudicots have venation that is parallel to the leaf axis. E. Eudicots have stomatal pores but monocots do not.
In a human female, an inhibition of LH would also inhibit which of the following?
a. maturation of follicles b. secretion of FSH c. secretion of GnRH d. secretion of estrogen e. destruction of follicles