Biochemistry And Cell Biology! Hardest Trivia Quiz
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- 1.Water has an important stabilizing effect on temperature in living organisms and their environments because as water absorbs heat, much of the energy is used to ____________ instead of raising the temperature.
- A.
Create covalent bonds
- B.
Create hydrogen bonds
- C.
Break surface tension
- D.
Break hydrogen bonds
- E.
Create hydration layers
- 2.Reactions that use the equivalent of a water molecule to break a molecule into smaller subunits are called
- A.
Equilibrium reactions
- B.
Hydration reactions
- C.
Hydrolysis reactions
- D.
Redox reactions
- E.
Dehydration synthesis reactions
- 3.Which of these terms is most inclusive?
- A.
Monosaccharide
- B.
Starch
- C.
Polysaccharide
- D.
Disaccharide
- E.
Carbohydrate
- 4.Which functional group is polar, consists of oxygen and hydrogen, and is a key component of alcohols?
- A.
Carboxyl
- B.
Hydroxyl
- C.
Phosphate
- D.
Amino
- E.
Carboxyl
- 5.Which functional group is responsible for the coiled shape of DNA?
- A.
Carboxyl
- B.
Hydroxyl
- C.
Phosphate
- D.
Amino
- E.
Carboxyl
- 6.Which functional group is found in all proteins?
- A.
Carbonyl
- B.
Hydroxyl
- C.
Phosphate
- D.
Amino
- 7.What kinds of reactions remove the equivalent of a water molecule when subunits are joined to make a larger molecule?
- A.
Equilibrium reactions
- B.
Hydration reactions
- C.
Hydrolysis reactions
- D.
Redox reactions
- E.
Dehydration synthesis reactions
- 8.Although they have a diversity of structures, all members of this group of organic molecules are primarily nonpolar and thus water-insoluble.
- A.
Proteins
- B.
Lipids
- C.
Nucleic acids
- D.
Carbohydrates
- E.
Amino acids
- 9.What organic molecules have a chemical formula that is (or is very nearly) a multiple of 1 Carbon atom to 1 Water molecule?
- A.
Proteins
- B.
Lipids
- C.
Nucleic acids
- D.
Carbohydrates
- E.
Amino acids
- 10.What kind of molecules are monosaccharides and disaccharides?
- A.
Proteins
- B.
Lipids
- C.
Nucleic acids
- D.
Carbohydrates
- E.
Amino acids
- 11.Which group of organic molecules are held together with peptide bonds?
- A.
Proteins
- B.
Lipids
- C.
Nucleic acids
- D.
Carbohydrates
- E.
Amino acids
- 12.Probably the most abundant carbohydrate on Earth, this unbranched chain of B-glucose subunits is the primary structural molecule in plant cell walls.
- A.
Chitin
- B.
Amylopectin
- C.
Cellulose
- D.
Glycogen
- E.
Amylose
- 13.In many animals this polysaccharide is found in large quantities in liver and muscle cells. It is highly branched.
- A.
Chitin
- B.
Amylopectin
- C.
Cellulose
- D.
Glycogen
- E.
Amylose
- 14.An amphipathic molecule, such as a soap or detergent, has
- A.
Two hydrophilic portions
- B.
Two hydrophobic portions
- C.
A hydrophobic and a hydrophilic portion
- D.
Only one hydrophobic portion
- E.
Only one hydrophilic portion
- 15.In which of the following reactions must the equivalent of a water molecule be added in order to break a bond?
- A.
Fatty acid + glycerol = fat
- B.
Glucose + fructose = sucrose
- C.
Glycogen = glucose
- D.
Alanine + glycine = dipeptide
- E.
Glucose = cellulose
- 16.Which of these are the main structural components of biological membranes?
- A.
Starches
- B.
Triglycerides
- C.
Proteins
- D.
Phospholipids
- E.
Steroids
- 17.Which of the following is NOT a major function of proteins in living organisms?
- A.
Speeding up biological reactions
- B.
Transporting substances across membranes
- C.
Providing structural support
- D.
Regulating the activity of other cellular molecules
- E.
Storing genetic information
- 18.Proteins are polymers of
- A.
Amino acids
- B.
Monosaccharides
- C.
Steroids
- D.
Nucleotides
- E.
Phospholipids
- 19.What structure is defined as the sequence of amino acids in a protein?
- A.
Primary
- B.
Secondary
- C.
Tertiary
- D.
Quaternary
- E.
Globular
- 20.The structure of a protein that refers to the conformation, or overall three-dimensional shape, of a polypeptide that has been folded into a functional protein...
- A.
Primary
- B.
Secondary
- C.
Tertiary
- D.
Quaternary
- E.
Globular
- 21.Which structure of a protein is determined between the amino acids side groups from two different polypeptide chains?
- A.
Primary
- B.
Secondary
- C.
Tertiary
- D.
Quaternary
- E.
Globular
- 22.Plant cells have one big____ used for storage, but animal cells have lots of small ones.
- A.
Nucleus
- B.
Mitochondria
- C.
Vacuole
- D.
Cytoplasm
- 23.Excessive heat or extremes of pH often cause denaturation of proteins, which means that the proteins.
- A.
Have fallen apart into individual monomer subunits.
- B.
Are no longer biological molecules.
- C.
Have broken into many separate domains.
- D.
Are no longer in a functional three dimensional structure.
- E.
Are highly reactive.
- 24.Which description best fits the cell membrane?
- A.
Transparent
- B.
Rigid for support
- C.
Thick and waxy
- D.
Semi-permeable
- 25.Having many ribosomes attached to it, this organelle produces proteins as well as other substances and then transports them to other parts of the cell
- A.
Rough ER
- B.
Smooth ER
- C.
Nucleolus
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