BIOS 100 Exam 4 - Answer Number of electrons 2. The bond in which...

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BIOS 100 Exam 4

• Identify the part of the atom that most determines the chemical properties of the atom.:

Answer Number of electrons

• The bond in which bonded atoms share electrons is called a(n) .-

Answer Covalent Bond

• What is the maximum number of single covalent bonds a carbon atom can form with other

elements?:

Answer 4

• Individual water molecules are held to one another by relatively weak

bonds.:

Answer Hydrogen

• The breaking of a large organic molecule into smaller individual subunits involves

multiple .:

Answer Hydrolyis reactions

• The chemical reaction shown here, in which a large molecule is broken down into the

smaller parts that make it up, is called a reaction.-

Answer Hydrolysis

• Follicle cells in your scalp assemble proteins to build new hair. This most likely involves

reactions.:

Answer Dehydration synthesis

• Your body contains thousands of different types of proteins, each with a specific

function. A protein's function is largely determined by its .: - 1 / 2

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Answer Shape

• The primary structure of a protein is like the arrangement of beads on a string. In this

analogy, the beads are .:

Answer Amino acids

• A protein's alpha helices and beta sheets form their shapes at the

Answer SECOND

• What happens to the shape and function of a protein if one of the amino acids is replaced

with a different type of amino acid?:

Answer It depends on the role of the amino acid that is altered. One amino acid might be replaced with no measurable effect on the protein's function; replacing another might cause a total loss of function.

• Large proteins, like DNA polymerase and hemoglobin, are often composed of several

polypeptides that are linked together. The level of protein structure describes how the polypeptides are joined to create a larger com- plex.: Answer Fourth

• To a large extent, a protein's function is dependent upon its shape. What determines a

protein's shape?:

Answer The sequence of amino acids

14. Form refers to , and function refers to .:

Answer anatomical struc- ture; physiological actions

• Anatomy is the study of the structure of an organism's body parts, while physiology is the

study of the function of those parts. See Section 11.1 (Page)

Answer True

16. Anatomy is to physiology as .:

Answer a book is to reading

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