Which of the following would probably be caused by defective lysosomes?
the cell would not be able to undergo mitosis
the cell would become filled up with junk and die
the cell would not be able to detoxify alcohol and would die
the cell would not be able to move and would die
the cell would not be able to produce energy and would die
The Correct Answer is B
A. the cell would not be able to undergo mitosis: Lysosomes are not required for mitosis. That’s handled by microtubules and centrosomes.
B. the cell would become filled up with junk and die: Lysosomes contain digestive enzymes to break down waste. If defective, cellular debris accumulates, which can lead to cell death (as in lysosomal storage diseases).
C. the cell would not be able to detoxify alcohol and would die: Peroxisomes, not lysosomes, detoxify alcohol.
D. the cell would not be able to move and would die: Cell movement involves cytoskeleton elements like actin and microtubules, not lysosomes.
E. the cell would not be able to produce energy and would die: Mitochondria, not lysosomes, produce cellular energy (ATP).
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. isotonic; nothing: Isotonic means equal solute concentration. 0.9% NaCl is isotonic; 9.0% is much higher, so not isotonic.
B. hypotonic; crenation: A hypotonic solution has less solute than the cell. Crenation (shriveling) occurs in a hypertonic solution.
C. hypertonic; crenation: A 9.0% NaCl solution is hypertonic (more solutes than inside the cell). Water moves out of red blood cells, causing them to shrink or crenate.
D. hypertonic; lysis: Lysis (bursting) occurs in hypotonic solutions, where water enters the cell.
Correct Answer is B
Explanation
A. Axillary:
Refers to the armpit area, not the abdomen.
B. Umbilical:
The umbilical region is centrally located in the abdomen and aligns with the navel (belly button), the most likely area described as “middle of the abdomen.”
C. Sternal:
Refers to the breastbone or chest region, not the abdomen.
D. Brachial:
Refers to the upper arm, not related to the abdomen.
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