MURPHY 301 EXAM INTRODUCTION TO
BIOCHEMISTRY | QUESTIONS AND
CORRECT ANSWERS | GRADED A+ |
VERIFIED ANSWERS | JUST RELEASED
The functional group present in the following molecule is called:
CH3 -- C=O--NH--CH2--CH3
A) Amine
B) Ketone
C) Amide
D) Ester
E) Acid ------CORRECT ANSWER---------------Amide
The majority of Earth's species belong to which of the following
classifications
A) Eukaryotes
B) Prokaryotes
C) Viruses
D) Mammals
E) Archea ------CORRECT ANSWER---------------Prokaryotes
The conversion of earths atmosphere from anerobic to aerobic was due to
the development of _________________ by cyanobacteria
A) Photosynthesis
B) Metabolism
C) Chemosynthesis
D) Oxidation of iron
,E) Fixation of nitrogen as cyanide ------CORRECT ANSWER---------------
Photosynthesis
The largest mass extinction also known as the great dying was called the
A) Cenezoic extinction
B) Permian extinction
C) Mesozoic event
D) Great ice age
E) The great plague ------CORRECT ANSWER---------------Permian
extinction
The most prominent function of RNA is
A) Energy source
B) Nutrient source
C) Protein synthesis
D) Structural elements
E) B and C ------CORRECT ANSWER---------------Protein synthesis
An organisms entire set of DNA is called
A) Genome
B) Genetic sequence
C) Polynucleotide sequence
D) Gene
E) Inheritance ------CORRECT ANSWER---------------Genome
The major function of carbohydrates is
A) Catalysts and structural elements
B) Energy sources and structural elements
,C) Genetic information
D) Protein synthesis
E) Insulation ------CORRECT ANSWER---------------Energy sources and
structural elements
The water content in the human body is approximately:
A) 90%.
B) 80%.
C) 70%.
D) 60%.
E) 50%. ------CORRECT ANSWER---------------70%
The four most abundant chemical elements in living systems are:
A) hydrogen, oxygen, sulfur and phosphorus.
B) hydrogen, carbon, nitrogen and oxygen.
C) sodium, potassium, carbon and oxygen.
D) sodium, potassium, nitrogen and sulfur.
E) carbon, nitrogen, oxygen and potassium. ------CORRECT ANSWER------
---------Hydrogen, carbon, nitrogen, oxygen
Nearly all proteins contain:
A) cobalt.
B) phosphorus.
C) selenium.
D) sulfur.
E) none of the above. ------CORRECT ANSWER---------------Sulfur
Which of the following statements is FALSE?
, A) Proteins can be structural components of cells.
B) Proteins can transmit signals between cells.
C) Proteins can transport molecules within cells and between cells.
D) Proteins can be both hormones and hormone receptors.
E) Proteins are the only biological polymer that can catalyze biochemical
reactions. ------CORRECT ANSWER---------------"Proteins are the only
biological polymer that can catalyze biochemical reactions" - false
Which of the following is NOT classed as a lipid?
A) Cholesterol
B) Palmitic acid
C) Glycerol
D) Phosphatidyl serine
E) Triacylglycerol ------CORRECT ANSWER---------------Glycerol
During exocytosis membrane-bound vesicles migrate from the Golgi
apparatus to the __________.
A) Lysosome
B) Smooth endoplasmic reticulum
C) Cell wall
D) Plasma membrane
E) More than one answer is correct ------CORRECT ANSWER---------------
Plasma Membrane
Notable features of eukaryotes include all of the following except
________.
A) Rapid cell division
B) Larger size
C) A complex internal structure
D) An endomembrane system
E) Organelles ------CORRECT ANSWER---------------Rapid cell division
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