What is an organic molecule based on? Why?
What will be an ideal response?
Carbon atoms. They can form the basic building blocks of life as we know it, such as amino acids and nucleotide bases.
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Which of the following is NOT one of Hubble's types of galaxies?
A) normal spirals B) irregular type II C) dwarf ellipticals D) barrel spirals E) Seyfert spirals
Pluto is most like a
A) terrestrial planet. B) jovian (gas giant) planet. C) comet. D) star.
A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5° with the normal in the plastic. In the water, this beam makes an angle of 21.8° with the normal
What is the speed of light in the plastic cube? (c = 3.0 × 108 m/s)
The two most abundant elements in the Sun are:
A) magnesium and carbon. B) hydrogen and helium. C) nitrogen and neon. D) iron and oxygen.