Question

1. what are some of the properties which make water a good environment for chemical reactions ?

2. What is an acid? Base? What is considered acidic or basic or neutral? Which substance/ compound is neutral? Know the pH scale—what does it tell us, what is it based on (its relation to H+ ion concentration)? It ranges from 0 to 14. Know which points/numbers on the scale are acidic, which are basic, which is neutral. What is the difference in acidity between each number on the scale? pH3 vs. pH8: which is more acidic? More basic?

3. Understand why cells are held at a constant pH. What’s the ideal pH for most cells? How are cells maintained at a constant pH? What is a buffer? What does it do?

4.What is an organic compound? What elements must an organic molecule have? What is the skeleton, the functional group? Why are functional groups important? Know the important functional groups we discussed in class (alcohol, carboxyl, amino, sulfhydryl and phosphate). which type(s) of organic molecule contain these functional group? carbohydrates, lipids/fat, protein and nucleic acids

  

Answer 1

1. Because of its polarity and ability to form hydrogen bonds,water makes an astounding dissolvable, implying that it can disintegrate a wide range of sorts of atoms. A large portion of the substance responses critical to life occur in a watery domain within cells, and water's ability to break up a wide assortment of particles is key in enabling these synthetic responses to happen.

2.An acid is a substance that donates hydrogen ions.An acid is a substance that forms hydrogen (H⁺) ions in a solution.Base is a substance that accept hydrogen ions.

A base is a substance which forms hydroxide (OH^- ) ions in a solution. And neutral Water is neither an acid nor a base, therefore it is neutral. Other substances that are neutral are classified as salts. Salts have a pH of 7. •0-6 is acidic ,•7 is neutral •8-14 is basic (alkali).ph 3 is more acidic where as Ph 8 is basic

3. Ideal Ph is 7.2 to 7.4 which is neutral.

The body tries to maintain a stable, constant condition which is known as homeostasis. It has several systems in place to regulate its pH levels.

The concentration of hydrogen and hydroxide ions in an aqueous solution can greatly affect both the structure and chemical reactivity of cellular molecules. Cells are cell organelles must maintain an appropriate pH in order to function optimally.

4.Organic compounds always contain carbon along with other elements that are needed for living organisms to function.

Carbon skeletons are the backbones of organic molecules. They are composed of carbon-carbon atoms that form chains to make an organic compound.

The most common functional groups are carbonyls (C=O), alcohols (-OH), carboxylic acids (CO2H), esters (CO2R), and amines (NH2).Functional groups also play an important part in organic compound.