Answer: double helix
Explanation: The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like a twisted ladder.
Answer:
C) Most of the free energy available from the oxidation of glucose remains in pyruvate
Explanation:
The free energy for the oxidation of glucose to CO2
and water is -686kcal/mole and the free energy for the reduction of
NAD+ to NADH is+53 kcal/mole. Why are only two molecules of NADH
formed during glycolysis when it appears that as many as a dozen
could be formed and most of the free energy available from the oxidation of glucose remains in pyruvate
Density is mass divided by volume. The mass of the block is 10 grams. The volume of the block is 2 mL: the water changes from the 3 mL line to the 5 mL when the block is added, so the block must be 5-3= 2 mL.
So, the density is 10 g / 2 mL = 5 g/mL.
Hope this helps!
B.Prokaryotic cells do not have a true nucleus or membrane-bound organelles.
