What is the function of the endoplasmic reticulum? a. manufacture the ribosomes
b. double rod structures that hold DNA.
c. separate the chromatin during cell division
d. passageways that carry materials from one part to another

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

What powdery mineral is a health hazard when airborne?

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion