LSU BIO 1201 FINAL EXAM POMARICO
WITH CORRECT ANSWERS
Which four elements make up 90% of life? - ANSWER-C, H, N, O
Does DNA have uracil or thymine? - ANSWER-Thymine
What is a macromolecule? - ANSWER-Molecule made up of polymers
What are the complementary base pairs in DNA - ANSWER-A-T, G-C
Which of the following are not pyrimidines?
T, C, U, A, G - ANSWER-A, G
What causes an element to become an isotope? - ANSWER-Change in # of neutrons
What is an enantiomer? - ANSWER-Two molecules that are mirror images of each
other
What characteristic is specific of tertiary structure? - ANSWER-Interactions with side
chains
What to cellulose, glycogen, and starch have in common? - ANSWER-All derived from
glucose
Which property of water is the reason for many of water's other properties? - ANSWER-
Hydrogen bonding
In DNA structure, what makes up the lateral movement of the structure but not the "stair
steps"? - ANSWER-Phosphate group + sugar
What type of bond holds the double helix structure of DNA together? - ANSWER-
Hydrogen bonds
What type of bond as an equal sharing of electrons? - ANSWER-Nonpolar covalent
What is a hydrogen bond? - ANSWER-A bond between a hydrogen with a partial
positive & partial negative charge atom (usually oxygen and nitrogen)
Spider walking on water is a result of - ANSWER-Surface tension; cohesion
Which of the following would most likely have a polar bond?
CH, CO, OO, CN, NH - ANSWER-CO and NH
, Products of cellular respiration - ANSWER-CO2, water, energy
What is the most important product of anaerobic respiration? - ANSWER-Regeneration
of NAD+
What happens to Co2 in the Calvin Benson cycle? - ANSWER-Fixation/reduction;
incorporation into sugar molecules
Where does the most energy production occur in cellular respiration? - ANSWER-
Oxidative phosphorylation
What are the properties of a proton compared to neutrons and electrons? - ANSWER-
Heavy, positive
Which molecules can cross the membrane the easiest? - ANSWER-Nonpolar, small
Which isomer has a carbon-carbon double bond? - ANSWER-Geometric/cis trans
Why is carbon the most versatile organic element? - ANSWER-Ability to make 4 bonds
Which type of group would a hydroxyl group most likely bond to? - ANSWER-Polar
Which organelle synthesizes proteins? - ANSWER-Rough ER
Which organelle prevents future damage from happening? - ANSWER-Lysosome
What is an example of an organelle that is found in eukaryotes but not prokaryotes? -
ANSWER-Nucleus
If cytosine makes up 20% of DNA, what % would be thymine? - ANSWER-30%.
30% A, 30% T= 60%
20% G, 20% C= 40%
What structures make up the nucleus? - ANSWER-Nuclear envelope, nuclear pores,
matrix, nucleolus. (NOT CHROMATIN)
How are DNA, chromosomes, and genes related? - ANSWER-Genes are made of DNA,
and are located on chromosomes.
What products of light reactions are used in the Calvin Cycle? - ANSWER-ATP, NADPH
Where are the electrons transferred to from photosystem II? - ANSWER-Electron
transport chain- thylakoid membrane
WITH CORRECT ANSWERS
Which four elements make up 90% of life? - ANSWER-C, H, N, O
Does DNA have uracil or thymine? - ANSWER-Thymine
What is a macromolecule? - ANSWER-Molecule made up of polymers
What are the complementary base pairs in DNA - ANSWER-A-T, G-C
Which of the following are not pyrimidines?
T, C, U, A, G - ANSWER-A, G
What causes an element to become an isotope? - ANSWER-Change in # of neutrons
What is an enantiomer? - ANSWER-Two molecules that are mirror images of each
other
What characteristic is specific of tertiary structure? - ANSWER-Interactions with side
chains
What to cellulose, glycogen, and starch have in common? - ANSWER-All derived from
glucose
Which property of water is the reason for many of water's other properties? - ANSWER-
Hydrogen bonding
In DNA structure, what makes up the lateral movement of the structure but not the "stair
steps"? - ANSWER-Phosphate group + sugar
What type of bond holds the double helix structure of DNA together? - ANSWER-
Hydrogen bonds
What type of bond as an equal sharing of electrons? - ANSWER-Nonpolar covalent
What is a hydrogen bond? - ANSWER-A bond between a hydrogen with a partial
positive & partial negative charge atom (usually oxygen and nitrogen)
Spider walking on water is a result of - ANSWER-Surface tension; cohesion
Which of the following would most likely have a polar bond?
CH, CO, OO, CN, NH - ANSWER-CO and NH
, Products of cellular respiration - ANSWER-CO2, water, energy
What is the most important product of anaerobic respiration? - ANSWER-Regeneration
of NAD+
What happens to Co2 in the Calvin Benson cycle? - ANSWER-Fixation/reduction;
incorporation into sugar molecules
Where does the most energy production occur in cellular respiration? - ANSWER-
Oxidative phosphorylation
What are the properties of a proton compared to neutrons and electrons? - ANSWER-
Heavy, positive
Which molecules can cross the membrane the easiest? - ANSWER-Nonpolar, small
Which isomer has a carbon-carbon double bond? - ANSWER-Geometric/cis trans
Why is carbon the most versatile organic element? - ANSWER-Ability to make 4 bonds
Which type of group would a hydroxyl group most likely bond to? - ANSWER-Polar
Which organelle synthesizes proteins? - ANSWER-Rough ER
Which organelle prevents future damage from happening? - ANSWER-Lysosome
What is an example of an organelle that is found in eukaryotes but not prokaryotes? -
ANSWER-Nucleus
If cytosine makes up 20% of DNA, what % would be thymine? - ANSWER-30%.
30% A, 30% T= 60%
20% G, 20% C= 40%
What structures make up the nucleus? - ANSWER-Nuclear envelope, nuclear pores,
matrix, nucleolus. (NOT CHROMATIN)
How are DNA, chromosomes, and genes related? - ANSWER-Genes are made of DNA,
and are located on chromosomes.
What products of light reactions are used in the Calvin Cycle? - ANSWER-ATP, NADPH
Where are the electrons transferred to from photosystem II? - ANSWER-Electron
transport chain- thylakoid membrane
