Question

unit 1 cumulative test (characteristics of life, biomolecules, cell structure and transport) 2025
1 of 42
possible points: 2.13
characteristics of four specimens

specimen	responds to stimuli	can replicate dna	capable of growing	cell wall present	composed of cells
2	yes	yes	yes	yes	yes
3	yes	yes	yes	yes	yes
4	yes	yes	yes	no	yes

options:
○ specimens 1 and 4 only
○ specimens 2 and 3 only
○ specimens 1, 2, and 3
○ specimens 2, 3, and 4

Explanation:

To determine which specimens are living, we use characteristics of life: respond to stimuli, replicate DNA, grow, and be composed of cells (and for many, have a cell wall if applicable).

• Specimen 1: Does not respond to stimuli, cannot grow, not composed of cells → non - living.
• Specimen 2: Responds to stimuli, replicates DNA, grows, has cell wall, composed of cells → living.
• Specimen 3: Responds to stimuli, replicates DNA, grows, has cell wall, composed of cells → living.
• Specimen 4: Responds to stimuli, replicates DNA, grows, composed of cells (no cell wall, e.g., animal cell) → living.

So specimens 2, 3, and 4 are living.

Answer:

Specimens 2, 3, and 4 (the option: Specimens 2, 3, and 4)