Exam 1 Review

Question 1

Which of the following biological molecules contain peptide bonds?
Proteins
Carbohydrates
Lipids
Nucleic Acids

Answer 1

Proteins

Question 2

What is the function of chaperone proteins?
Denaturation of polypeptides
Assembling amino acids
Regulation of gene expression
Folding proteins
None of the above

Answer 2

FOlding proteins

Question 3

Which amino acid is responsible for the formation of disulfide bonds?
Alanine
Proline
Tyrosine
Cysteine
Guanine

Answer 3

Cysteine

Question 4

The removal of water to form a chemical bond is termed –
Dehydration synthesis
Hydrolysis
Degradation
Catabolism
Disassociation

Answer 4

Dehydration Synthesis

Question 5

Which lipid contains 4 fused carbon rings?
Triglycerides
Steroids
Phospholipids
Terpenes
Saturated fates

Answer 5

Steroids

Question 6

Which factor is not critical for the folding of proteins?
Ionic bonds
Hydrogen bonds
van der Waals forces
Disulfide bridges
Phosphate bonds

Answer 6

Phosphate bonds

Question 7

The 2 strands of DNA are covalently bonded together. These bonds are called phosphodiester bonds.
This is true
This is false

Answer 7

True

Question 8

Which of the following is not part of a nucleotide?
5 carbon sugar
Phosphate group
Fatty acid chain
Nitrogenous base

Answer 8

Fatty acid chain

Question 9

The energy in lipids is stored in the C-H bonds.
This is true
This is false

Answer 9

True

Question 10

C-H is a nonpolar group.
This is true
This is false

Answer 10

True

Question 11

Hydrolysis–
Is used to break polymers
Removes water to form bonds
Is involved in protein synthesis
Can form disaccharides
All of the above

Answer 11

Is used to break polymers

Question 12

Lincosamides are a class of antibiotics that inhibit peptide bond formation. What type of biological molecule would be effected?
Lipids
Proteins
Nucleic Acids
Carbohydrates

Answer 12

Proteins

Question 13

If a chromosome contains 20% thymine, how much guanine should it have?
10%
20%
30%
40%

Answer 13

30%

Question 14

A one-point mutation occurs in a nucleic acid, adenine is replaced with uracil. What type of molecule is this?
Monosaccharide
Deoxyribose Nucleic Acid
Amino Acid
Ribose Nucelic Acid
Triglyceride

Answer 14

Ribose nucelic acid

Question 15

Which of the following is not a polymer of glucose?
Starch
Glycogen
Chitin
Maltose
All except d

Answer 15

chitin

Question 16

What happens when a lipid is hydrogenated?
Hydrogen is added to the fatty acid chains
The melting point is raised
The lipid is converted into a saturated fat
The fatty acid chain is straightened
All of the above

Answer 16

All of the aove

Question 17

You worked at a fish hatchery and wanted to set up an experiment to deliver the female sex hormone, estrogen, to some fish. What type of molecule is estrogen?
Triglyceride
Polypeptide
Steroids
Terpene
Disaccharide

Answer 17

Steroids

Question 18

If a strand of DNA has a sequence TAGGATC, what would be the complementary sequence?
CGAAGAT
TACCGGA
CGAAGTC
ATCCTAG

Question 19

If a cell was grown in a growth medium that has a radioactive sulfur isotope which class of biomolecules will show the presence of the isotope?
Nucleic acids
Carbohydrates
Lipids
Proteins

Answer 19

Protein

Question 20

In the Antacids as Buffers simulation, ________Blank was added to the beakers to simulate stomach acid.

Answer 20

hydrochloric acid

Question 21

Which antacid was the least effective in the experiment?

Answer 21

sodium bicarbonate with citric acid

Question 22

Artificial cytoplasm