Match the following carbohydrate molecules with the class of molecule that they belong to:
molecules; (i) glucose; (ii) starch; (iii) sucrose
classes: a) polysaccharides b) disaccharides c) monosaccharides
a) i-a; ii-b; iii-c
b) i-b; ii-a; iii-c
c) i-c; ii-a; iii-b
d) i-c; ii-b; iii-a

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance