When a cell divides, only one cell gets the original DNA molecules
a. True
b. False
Indicate whether the statement is true or false
False
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A spherical flask, 4 m diameter with a 5 mm thick wall, is used to heat grape juice. During the heating process the outside surface of the flask is 100ºC and the inside surface is 80ºC. Estimate the thermal resistance of the flask, the heat transfer through the flask, if it is assumed that only the bottom half is heated, and the temperature distribution through the flask wall.
What will be an ideal response?
_______________ produces the majority of the geological activity on Earth
Fill in the blank(s) with correct word
If we went back in time 10 billion years, would we expect Hubble's constant to be identical to the present-day Hubble constant?
A) Yes, a constant never changes. B) No, Hubble's constant is roughly equal to 1 divided by the age of the universe, and 10 billion is a substantial enough number to notice a difference. C) If we went back further in time, it would be different, but 10 billion years is not enough. D) It would only change if we went 10 billion years into the future.
The surface of Comet 67P/CG as detected by the Rosetta mission is best described as
A) smooth with parallel striations. B) smooth with many hilly areas. C) rough with cracks and crevices. D) rough with many craters.