Destruction of which biome would result in the greatest loss of biodiversity?
A. grassland
B. tropical rain forest
C. desert
D. taiga forest
E. savanna
Answer: B
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Transcription of the lac operon is most efficient when ____
a. cAMP levels are low b. the CAP site of the promoter is not bound to cAMP c. glucose is present and lactose is absent d. lactose is present and glucose is absent e. lactose and glucose are present
When a plant responds to external stimuli, such as light, gravity, or touch by directional growth, these
responses are referred to as: a. turgor movements. b. sleep movements. c. nastic movements. d. circadian rhythms. e. tropisms.
What is the difference between a first messenger and a second messenger? Give an example of each. What will be an ideal response?
What is a key trait of a multicellular organism?
a. The organism has many cells. b. All the organism's cells have the same function. c. A division of labour exists among the organism's cells. d. All the organism's cells are similar in shape.