Biology Final Exam 2026 comprehensive
Questions and Answers with Verified
Solutions
Question 1:
Cell Theory
Answer:
-All living things are composed of cells -Cells are the basic units of
structure and function in living things -New cells are produced from
existing cells
Question 2:
Why does cell division occur?
Answer:
To allow an organism to grow and develop, repair damaged cells, and
replace old cells
Question 3:
Where are genes found?
Answer:
In chromosomes
Question 4:
How many chromosomes do humans have?
Answer:
46 (23 pairs)
,Question 5:
What is a chromosome?
Answer:
A threadlike structure of nucleic acids and protein found in the nucleus of
most living cells, carrying genetic information in the form of genes.
Question 6:
What is a chromatin?
Answer:
A complex mixture of DNA and proteins
Question 7:
Sister chromatids two identical copies of a single replicated chromosome
that are joined together
Answer:
at a shared centromere. Formed during the S phase of the cell cycle.
Question 8:
Centromere
Answer:
Area where the chromatids of a chromosome are attached
Question 9:
What stage of the cell cycle are most cells in?
Answer:
Interphase (90% of the time)
, Question 10:
What happens during interphase?
Answer:
Cell grows, performs its normal functions, and prepares for division;
consists of G1, S, and G2 phases
Question 11:
G1 phase
Answer:
Question 12:
G0 Phase
Answer:
Cells can exit the cell cycle at the end of the G1 phase when it receives a
signal to differentiate or when resources are insufficient to grow and
divide. Whether or not the cell enters the G0 phase depends on the
organism's stage in development. When the cell is in the G0 phase, it is in
a resting and non-dividing state.
Question 13:
S phase
Answer:
The synthesis phase of the cell cycle; the portion of interphase during
which DNA is replicated. At the end of this phase, the cell has two
complete sets of chromosomes.
Questions and Answers with Verified
Solutions
Question 1:
Cell Theory
Answer:
-All living things are composed of cells -Cells are the basic units of
structure and function in living things -New cells are produced from
existing cells
Question 2:
Why does cell division occur?
Answer:
To allow an organism to grow and develop, repair damaged cells, and
replace old cells
Question 3:
Where are genes found?
Answer:
In chromosomes
Question 4:
How many chromosomes do humans have?
Answer:
46 (23 pairs)
,Question 5:
What is a chromosome?
Answer:
A threadlike structure of nucleic acids and protein found in the nucleus of
most living cells, carrying genetic information in the form of genes.
Question 6:
What is a chromatin?
Answer:
A complex mixture of DNA and proteins
Question 7:
Sister chromatids two identical copies of a single replicated chromosome
that are joined together
Answer:
at a shared centromere. Formed during the S phase of the cell cycle.
Question 8:
Centromere
Answer:
Area where the chromatids of a chromosome are attached
Question 9:
What stage of the cell cycle are most cells in?
Answer:
Interphase (90% of the time)
, Question 10:
What happens during interphase?
Answer:
Cell grows, performs its normal functions, and prepares for division;
consists of G1, S, and G2 phases
Question 11:
G1 phase
Answer:
Question 12:
G0 Phase
Answer:
Cells can exit the cell cycle at the end of the G1 phase when it receives a
signal to differentiate or when resources are insufficient to grow and
divide. Whether or not the cell enters the G0 phase depends on the
organism's stage in development. When the cell is in the G0 phase, it is in
a resting and non-dividing state.
Question 13:
S phase
Answer:
The synthesis phase of the cell cycle; the portion of interphase during
which DNA is replicated. At the end of this phase, the cell has two
complete sets of chromosomes.
