[Q] How are organisms able to grow and repair their cells?
Options:
- (A) hospitalization
- (B) orchids
- (C) cell care
- (D) fungi
- (E) growth cells
- (F) mitosis
- (G) recovery
- (H) recycling
[A] Here's my solution: Cell division is how organisms grow and repair themselves. Mitosis is cell division. Mitosis is how organisms grow and repair themselves. The answer is (F).

[Q] What is proprioception part of?
Options:
- (A) tail fins
- (B) genus
- (C) fur seals
- (D) animals
- (E) athletes
- (F) movement
- (G) humans
- (H) balance
[A] Here's my solution: Balance is the ability to sense and maintain body position. Another name for sense of body position is proprioception. Balance involves proprioception ability. The answer is (H).

[Q] Mutations are what to evolution?
Options:
- (A) Plants growth
- (B) essential
- (C) optional
- (D) competition
- (E) dangerous
- (F) non essential
- (G) voluntary
- (H) allow growth
[A] Here's my solution: Mutations are essential for evolution to occur. When that occurs, several things happen. Mutations are essential for evolution happen. The answer is (B).

[Q] The loss in length of what causes cells to age?
Options:
- (A) fur and fat
- (B) layers of fat
- (C) cell membrane
- (D) sunlight
- (E) Chlorophyll
- (F) telomeres
- (G) programmed cell death
- (H) cancer
[A]

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Here's my solution: Aging occurs as cells lose their ability to divide. Portions of the telomeres are lost each time a cell divides. Aging occurs as cells lose their telomeres. The answer is (F).