Biochemistry Test Bank

Biochemistry Test Bank


Chapter 01
The Facts of Life: Chemistry Is the Logic of Biological
Phenomena
Question: 1. All are distinctive properties of living systems EXCEPT:
a. Living organisms are relatively simple.
b. Biological structures play a role in the organism's existence.
c. The living state is characterized by the flow of energy through the
organism.
d. Living organisms are highly organized.
e. Living organisms are actively engaged in energy transformation.
- ANSWER:
a
Answer:


Question: 2. Even though the building blocks have fairly simple structures,
macromolecules are exquisitely organized in their intricate
three-dimensional
architecture known as:
a. configuration.
b. conformation.
c. sequence.
d. Lewis structure.
e. structural maturation.
- ANSWER:
b
Answer:

,Question: 3. All of the following activities require the presence of ATP or
NADPH
EXCEPT:
a. osmoregulation.
b. biosynthesis.
c. movement of muscles.
extra per year?
d.
light emission.
e.
none, they are all energy-requiring activities.
- ANSWER:
e
Answer:


Question: 4.
Which are the four most common elements in the human body?
a.
hydrogen, calcium, oxygen and sodium
b.
hydrogen, oxygen, iron and carbon
c.
hydrogen, oxygen, carbon and nitrogen
d.
oxygen, carbon, iron and nitrogen
e.
oxygen, silicon, calcium and nitrogen
- ANSWER:
c
Answer:


Question: 5.
What makes carbon such an abundant element in biomolecules?
a.
It can form up to five bonds by sharing its electrons.
b.

,It forms only single bonds.
c.
It provides low bond energy.
d.
It forms stable covalent bonds by electron pair sharing.
e.
It does not usually bond to other carbons, allowing a more diverse
combination of elements.
- ANSWER:
d
Answer:


Question: 6. The major precursors for the formation of biomolecules include
all
EXCEPT:
a. nitrate and dinitrogen.
b. water.
c. carbon dioxide.
extra per year?
d.
ammonium ion.
e.
none, all are major precursors.
- ANSWER:
e
Answer:


Question: 7.
From the major precursors, the complex biomolecules are made in which
sequence?
a. metabolites, building blocks, macromolecules, supramolecular complexes
b. macromolecules, building blocks, metabolites, supramolecular complexes
c. building blocks, macromolecules, supramolecular complexes, metabolites
d. metabolites, macromolecules, building blocks, supramolecular complexes
e. metabolites, building blocks, supramolecular complexes, macromolecules

, - ANSWER:
a
Answer:


Question: 8. The structural integrity of supramolecular complexes
(assemblies) of
multiple components are bonded to each other by all of the following forces
EXCEPT:
a. covalent bonds
b. van der Waals forces
c. hydrogen bonds
d. hydrophobic interactions
e. ionic interactions
- ANSWER:
a
Answer:


Question: 9. Organelles have what three attributes?
a. Only in prokaryotic cells, membrane bound, have a dedicated set of tasks.
extra per year?
b.
c.
Only in eukaryotic cells, membrane bound, have a dedicated set of tasks.
Only in eukaryotic cells, seldom membrane bound, have a dedicated set of
tasks.
d. Only in prokaryotic cells, membrane bound, multi-functional.
e. In both prokaryotic cells and eukaryotic cells, membrane bound, have a
dedicated set of tasks.
- ANSWER:
b
Answer:


Question: 10. Membrane structures are maintained primarily by:
a. hydrophobic interactions.