Scientists cannot predict when an El Niño will begin. But once it does, forecasters are able to predict changes to weather patterns. What would be a predicted weather effect of an El Niño?
A. Colder than normal across the northeastern United States
B. More rain in Peru and Ecuador
C. Drier and warmer in the southeastern United States
D. More rain in Indonesia and the Philippines
Answer: B
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Which of the following is directly involved in removing Spo11 that is covalently bound to the 5'-ending strand during meiosis?
A. RPA B. ExoI C. Rad50 D. Sgs1 E. Dmc1
Serves as an intracellular second-messenger molecule
a. Adenylate cyclase b. G-protein c. Carrier protein d. cAMP e. Ion channel receptor protein
The light sensor in a Chlamydomonas cell allows it to sense both light direction and light intensity. What do we call this light sensor?
a. a vacuole b. an eye c. a spot d. an eyespot
Which of the following may be a component of bacterial cell walls?
A) carrageenan B) lipoteichoic acids C) mycolic acid D) tubulin E) both lipoteichoic and mycolic acids