1. Which of the following parts allow different activities of the cell to happen? A cytoplasm
C vacuole
B. lysosome
D. vesicle

2. If the chloroplasts of a plant cell are damaged, which will it be unable to do?
A protect the cell
B. make food for the cell
C. excrete waste materials
D. give instruction for cell to reproduce

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.