Question 1

A fatty acid that contains three double bonds in its carbon chain is said to be

Accepted Answer

A)  saturated. 
B)  monounsaturated. 
C)  polyunsaturated. 
D)  hydrogenated. 
E)  carboxylated.

Question 2

Match each level of protein structure with its description.
-the sequence and number of amino acids in the chain

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 3

Match the descriptions to the correct protein category.
-disulfide bond

Accepted Answer

A) fibrous 
B) globular

Question 4

Define polar covalent,nonpolar covalent,ionic,and hydrogen bonding.Which of these bonds involves more than one molecule? Which of these bonds is/are important in determining the properties of water? Explain.

Accepted Answer

The answer of Define polar covalent,nonpolar covalent,ionic,and hydrogen bonding.Which of...

Question 5

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all.
-Isotopes of the same element differ by having different numbers of ________.

Accepted Answer

A) proton(s) 
B) neutron(s) 
C) electron(s)

Question 6

Match each bond type with its description.
-These result when two atoms share a pair of electrons.

Accepted Answer

A) van der Waals 
B) ionic 
C) hydrogen 
D) covalent

Question 7

Most of the fat found in the human body is in the form of

Accepted Answer

A)  steroids. 
B)  phospholipids. 
C)  triglycerides. 
D)  prostaglandins. 
E)  monoglycerides.

Question 8

Match the symbol with the correct element:
-This particle has a neutral charge and a mass of 
1.

Accepted Answer

A) P 
B) Na 
C) Ca 
D) C 
E) K
F)Pb

Question 9

Match each class of biomolecules to the correct statement about it.
-Glucose and ribose are examples; these molecules provide energy or structure.

Accepted Answer

A) carbohydrates 
B) lipids 
C) proteins 
D) nucleotides

Question 10

Define and describe the role of up-regulation and down-regulation of proteins.

Accepted Answer

The answer of Define and describe the role of up-regulation...

Question 11

Match each bond type with its description.
-These are weak attractive forces between hydrogen and certain other atoms.

Accepted Answer

A) van der Waals 
B) ionic 
C) hydrogen 
D) covalent

Question 12

The purines found in DNA are ________ and ________.

Accepted Answer

The answer of The purines found in DNA are ________...

Question 13

A component of an important buffer in the human body is

Accepted Answer

A)  NaCl. 
B)  H+. 
C)  HCl. 
D)  HCO3-. 
E)  H2O.

Question 14

Each amino acid differs from others in the

Accepted Answer

A)  number of central carbon atoms. 
B)  size of the amino group. 
C)  number of carboxyl groups. 
D)  chemical structure of the R group. 
E)  number of peptide bonds in the molecule.

Question 15

In regard to lipids,the term unsaturated refers to

Accepted Answer

A)  the lack of double bonds between adjacent carbon atoms in a fatty acid. 
B)  the presence of double bonds between adjacent carbon atoms in a fatty acid. 
C)  the ring structure of steroids. 
D)  glycerol, which acts as an anchor for joined fatty acids. 
E)  fats, such as butter and lard, which come from animal sources.

Question 16

What is the induced-fit model? List the types of bonds involved and classify them as strong or weak.

Accepted Answer

The answer of What is the induced-fit model? List the...

Question 17

The molecule RNA contains the five-carbon sugar ________.

Accepted Answer

The answer of The molecule RNA contains the five-carbon sugar...

Question 18

Match the descriptions to the correct protein category.
-lipid carriers

Accepted Answer

A) fibrous 
B) globular

Question 19

Match each level of protein structure with its description.
-the spatial arrangement of amino acids; can be a helix or a pleated sheet

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 20

What makes vegetable oils with trans fats similar in structure to saturated animal fats? Which type of fat is harmful,and in what way?

Accepted Answer

The answer of What makes vegetable oils with trans fats...

Exam 2: Molecular Interactions

A fatty acid that contains three double bonds in its carbon chain is said to be

Match each level of protein structure with its description. -the sequence and number of amino acids in the chain

Match the descriptions to the correct protein category. -disulfide bond

Define polar covalent,nonpolar covalent,ionic,and hydrogen bonding.Which of these bonds involves more than one molecule? Which of these bonds is/are important in determining the properties of water? Explain.

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all. -Isotopes of the same element differ by having different numbers of ________.

Match each bond type with its description. -These result when two atoms share a pair of electrons.

Most of the fat found in the human body is in the form of

Match the symbol with the correct element: -This particle has a neutral charge and a mass of 1.

Match each class of biomolecules to the correct statement about it. -Glucose and ribose are examples; these molecules provide energy or structure.

Define and describe the role of up-regulation and down-regulation of proteins.

Match each bond type with its description. -These are weak attractive forces between hydrogen and certain other atoms.

The purines found in DNA are and .