PCB 3023 Cell Biology Exam 1
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Answers With 100% Correct Answers
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QUESTIONS AND ANSWERS
What is cell biology? ANSWER -the study of the cell structure, dynamics, and functions
At what levels do cell biologist study? ANSWER -at microscopic and molecular levels
Around what concept does cell biology revolves around? ANSWER -the concept that cells
are the fundamental units of life
What are the two basic cell types? ANSWER -prokaryotes and eukaryotes
What's the primary difference between eukaryotes and prokaryotes? ANSWER -an
eukaryotic cell has a nucleus that contains most of its DNA, a prokaryote does not
Dr. Carl Woese ANSWER -revealed that prokaryotes can be divided into two sub-classes
(archae and bacteria) on the basis of molecular information
Distinctive characteristics of a plant cell ANSWER -1. cell wall
2. chloroplast
3. vacuole
Can animals cells carry out photosynthesis? ANSWER -yes
What is the major site for ATP production in eukaryotic cells? ANSWER -mitochondria
, Where does transcription occur in a eukaryotic cell? ANSWER -nucleus
Protein synthesis takes place in the ANSWER -1. mitochondria
2. ER
3. cytosol
The major function of the lysosome is ANSWER -degradation of macromolecules and
organelles
Most common elements in living systems ANSWER -1. hydrogen
2. oxygen
3. carbon
4. nitrogen
Types of bonds ANSWER -1. ionic
2. covalent
Ionic bonds ___________ electrons ANSWER -transfer
Covalent bonds _____________ electrons ANSWER -share
Energy is ___________________ when a bond forms ANSWER -released
Energy is ___________________ when a bond breaks ANSWER -absorbed
Types of covalent bonds ANSWER -1. single
2. double
3. triple
(T/F) Covalent bonds be non-polar as well as polar ANSWER -true
When are polar covalent bonds formed? ANSWER -when shared electrons are divided
unequally between atoms
Review Updated Questions And
Answers With 100% Correct Answers
Graded A+
QUESTIONS AND ANSWERS
What is cell biology? ANSWER -the study of the cell structure, dynamics, and functions
At what levels do cell biologist study? ANSWER -at microscopic and molecular levels
Around what concept does cell biology revolves around? ANSWER -the concept that cells
are the fundamental units of life
What are the two basic cell types? ANSWER -prokaryotes and eukaryotes
What's the primary difference between eukaryotes and prokaryotes? ANSWER -an
eukaryotic cell has a nucleus that contains most of its DNA, a prokaryote does not
Dr. Carl Woese ANSWER -revealed that prokaryotes can be divided into two sub-classes
(archae and bacteria) on the basis of molecular information
Distinctive characteristics of a plant cell ANSWER -1. cell wall
2. chloroplast
3. vacuole
Can animals cells carry out photosynthesis? ANSWER -yes
What is the major site for ATP production in eukaryotic cells? ANSWER -mitochondria
, Where does transcription occur in a eukaryotic cell? ANSWER -nucleus
Protein synthesis takes place in the ANSWER -1. mitochondria
2. ER
3. cytosol
The major function of the lysosome is ANSWER -degradation of macromolecules and
organelles
Most common elements in living systems ANSWER -1. hydrogen
2. oxygen
3. carbon
4. nitrogen
Types of bonds ANSWER -1. ionic
2. covalent
Ionic bonds ___________ electrons ANSWER -transfer
Covalent bonds _____________ electrons ANSWER -share
Energy is ___________________ when a bond forms ANSWER -released
Energy is ___________________ when a bond breaks ANSWER -absorbed
Types of covalent bonds ANSWER -1. single
2. double
3. triple
(T/F) Covalent bonds be non-polar as well as polar ANSWER -true
When are polar covalent bonds formed? ANSWER -when shared electrons are divided
unequally between atoms
