Exam 2: Some Basic Chemistry

For iron,iodine,potassium,and phosphorus,the correct chemical symbols,in order,are:

The precursor molecule for steroid hormones is:

Heat may disrupt the functioning of an enzyme because:

The genetic material (genetic code)within cells is:

A solution with a pH of 2.5 would be:

Which of the following statements are true of elements? (Read carefully and select all of the correct statements.)

The bonds in a molecule of oxygen are ____________________ bonds.

Vitamin D may be synthesized in the body from:

Which statement is NOT true of pH and human body fluids?

Phospholipids are present in all human cells as part of ____________________.

Which of the following statements are true of the structure of organic molecules? (Read carefully and select all of the correct statements.)

The steroid molecule that is part of cell membranes is ____________________.

Dissociation of salts is important to:

The element that provides strength in bones and teeth is:

A solution with a pH of 2 is ____________________,and has many ____________________ ions.

Which statement is NOT true of covalent bonds?

RNA is different from DNA in that:

Glycogen and starch are ____ that are made of ____.

Fatty acids and glycerol are the subunits of:

The shape of an enzyme creates a(n)____________________,where the substrate molecule(s)fit.