The diagram below represents a cell in the human body. Which statement concerning the structures within this cell is accurate?

Question

a
Structure 1 is a chloroplast that carries out photosynthesis.
b
Structure 2 is a vacuole that contains DNA.
c
Structure 3 is a mitochondrion, where cellular respiration takes place.
d
Structure 4 is the cell membrane, which provides rigid, inflexible support for the cell.

Answer 1

Based on the descriptions provided, the most accurate statement regarding the structures within a human cell from the options given would likely be:

c Structure 3 is a mitochondrion, where cellular respiration takes place.

Here's a brief explanation of why the other options are inaccurate:

• a: Humans do not have chloroplasts, as they do not perform photosynthesis. Chloroplasts are found in plants and some algae.

• b: Vacuoles in animal cells are generally smaller and do not contain DNA. DNA is found in the nucleus of the cell.

• d: The cell membrane does not provide rigid, inflexible support. Instead, it is flexible and provides a semi-permeable barrier. Rigid support comes from the cell wall, which is found in plant cells, not animal cells.

Therefore, option c is the correct response.