Fermentation is needed for anaerobic glycolysis:. a. to convert lactate to pyruvate. only in anaerobic organisms.
b. in order to convert NADH back to NAD
c. so glycolysis can continue.
d. only in organisms that produce ethanol.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o

how important do you think an instrument is to the musician who plays it?

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.