BIO121 FINAL EXAM: BIOLOGY 121,
2025/2026 WITH CORRECT/ACCURATE
ANSWERS
What is the hierarchy of life from largest to smallest? - CORRECT
ANSWERS- Biosphere-Ecosystem-Community-Population-
Organism-Organ system-Organ-Tissue-Cells-Organelle-Molecule-
Atom
A current example of natural selection is - CORRECT ANSWERS-
The bacteria that has become drug resistant
What three process ensure that you are not genetically the same
as your brother or sister? - CORRECT ANSWERS- Independent
assortment, random fertilization, and crossing over
A certain lizard species reproduces through parthenogenis. What
will be the sex of all the children from the mother? - CORRECT
ANSWERS- Female
Ribosomes are made out of which macromolecule? - CORRECT
ANSWERS- Nucleic acid and protein
How many nucleotides in a sequence are required to code for 10
amino acids? - CORRECT ANSWERS- 30
, According to this phylogenetic tree, which bear is most closely
related to the American black bear? - CORRECT ANSWERS-
Asiatic black bear
The variaties of species found on the different Galapagos islands
is most likely an example of which form of speciation? - CORRECT
ANSWERS- Allopatric
In many ways a mule is superior animal to the horse of donkey.
They are often stronger and can jump higher than either of their
parents. Why then are they considered to be a weak hybrid? -
CORRECT ANSWERS- They are sterile
Which was NOT a gas in Earth's earliest atmosphere? - CORRECT
ANSWERS- O2
Which version of bacterial DNA transfer involves a physical
connection between the two bacteria cells? - CORRECT ANSWERS-
Conjugation
What do the nucleus of mitochondria have in common? -
CORRECT ANSWERS- They both contain DNA
While most biologists do not consider viruses to be alive, viruses
do share some characteristics with living things. Which is a
2025/2026 WITH CORRECT/ACCURATE
ANSWERS
What is the hierarchy of life from largest to smallest? - CORRECT
ANSWERS- Biosphere-Ecosystem-Community-Population-
Organism-Organ system-Organ-Tissue-Cells-Organelle-Molecule-
Atom
A current example of natural selection is - CORRECT ANSWERS-
The bacteria that has become drug resistant
What three process ensure that you are not genetically the same
as your brother or sister? - CORRECT ANSWERS- Independent
assortment, random fertilization, and crossing over
A certain lizard species reproduces through parthenogenis. What
will be the sex of all the children from the mother? - CORRECT
ANSWERS- Female
Ribosomes are made out of which macromolecule? - CORRECT
ANSWERS- Nucleic acid and protein
How many nucleotides in a sequence are required to code for 10
amino acids? - CORRECT ANSWERS- 30
, According to this phylogenetic tree, which bear is most closely
related to the American black bear? - CORRECT ANSWERS-
Asiatic black bear
The variaties of species found on the different Galapagos islands
is most likely an example of which form of speciation? - CORRECT
ANSWERS- Allopatric
In many ways a mule is superior animal to the horse of donkey.
They are often stronger and can jump higher than either of their
parents. Why then are they considered to be a weak hybrid? -
CORRECT ANSWERS- They are sterile
Which was NOT a gas in Earth's earliest atmosphere? - CORRECT
ANSWERS- O2
Which version of bacterial DNA transfer involves a physical
connection between the two bacteria cells? - CORRECT ANSWERS-
Conjugation
What do the nucleus of mitochondria have in common? -
CORRECT ANSWERS- They both contain DNA
While most biologists do not consider viruses to be alive, viruses
do share some characteristics with living things. Which is a
