Cada pergunta deste Quiz é cronometrada.
Which of the following are monosaccharides? Pick all that apply.
Cellobiose
Ribose
Sucrose
Maltose
Galactose
Which of the following are considered macromolecules? Check all that apply.
Water
Fatty acids
Cellulose
Deoxyribonucleic acid
Isoprene
Which of the following are lipids?
Oleic acid
Glycerol
Estrogen
Chitin
Vitamin A
Which of the following is a property of water? Check all that apply.
It is considered a universal solvent.
It is miscible with oil.
It has a high surface tension.
It has a low specific heat capacity.
It forms hydrogen bonds with other water molecules.
Which of the following interactions are important for protein folding?
Hydrogen bonds
Disulfide bridges
Glycosidic bonding
Hydrophobic effect
Which of the following are TRUE about protein folding?
Some proteins can spontaneously fold into their native conformation.
hsp60 and hsp70 can assist in protein assembly.
Misfolded proteins can be toxic to cells.
Once a protein has folded, it cannot be unfolded.
All proteins require enzymes in order to fold correctly.
Water comprises what percentage of a cell's mass?
~ 50%
~ 70%
~ 85%
None of these answers is correct.
Which of the following is NOT a function of carbohydrates.
Provide fuel/energy.
Lubrication.
Catalysis.
Cellular communication.
Which of the following contains 1 to 4 beta-glycosidic bonds?
Glycogen
None of these
Which of the following is a saturated fatty acid?
Palmitate
Oleate
Arachidonic acid
Cholesterol
All of the above are saturated fatty acids.
Which amino acids contain sulfur?
Glycine
Methionine
Tryptophan
Cysteine
Valine
Which amino acids form disulfide bonds?
Isoleucine
Proline
All sterols are hormones.
Adenosine triphosphate is a nucleotide.
This molecule is incorporated into DNA.
There are hundreds of naturally occurring amino acids.
Which of the following statements about amino acids is true?
Only the L-amino acids are incorporated into proteins (with rare exceptions).
There are 20 essential amino acids.
All amino acids are acidic.
None of these is true.
Which are true about prions?
Some of them are transmissible.
About half of the abnormal prion protein consists of beta-sheets.
They are found in viruses.
They are thought to cause certain types of spongiform encephalopathies.
All misfolded proteins are prions.
Which of the following are types of RNA?
messenger
transfer
ribosomal
polyclonal
small nuclear
Which of the following molecules is amphipathic?
Phosphatidylserine
None of the above
Isoprenoids
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