2. Cell Chemistry & Cell Components

Athletes may use diuretics to help with which of the following?

Which of the following cells in the stomach secrete hydrochloric acid?

Which of the following has an effect on the pH of blood?

Which of the following is a source of fixed acids in the body?

An acid is __________.

Adding acid tends to __________ of a solution.

Which of the following dissociations is that of an acid?

Adding a base tends to __________ of a solution.

Why is the increasing amount of carbon dioxide being taken up by the oceans a cause for concern?

The absorption of human-generated CO₂ by the oceans __________.

Consider the reaction between carbon dioxide and water to form carbonic acid:CO2(g)+H2O(l)⇌CH2O3(aq)In the ocean, carbonic acid immediately dissociates to form a proton and bicarbonate ion, as follows:CH2O3(aq)+H+(aq)⇌CHO3−(aq)If an underwater volcano bubbled additional CO2 into the ocean, would this sequence of reactions be driven to the left or the right? How would this affect the pH of the ocean?

When H2 and CO2 react, acetic acid can be formed spontaneously while the production of formaldehyde requires an input of energy. Which of these conclusions can be drawn from this observation?a. More heat is released when formaldehyde is produced compared to the production of acetic acid.b.Compared to the reactants that it is formed from, formaldehyde has more potential energy than does acetic acid.c. Entropy decreases when acetic acid is produced and increases when formaldehyde is produced.d. Only acetic acid could be produced under conditions that existed in early Earth.