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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Related Questions
Correct Answer is C
Explanation
A. anaphase – sister chromatids are pulled to separate ends of the cell: During anaphase, sister chromatids separate and move to opposite poles.
B. metaphase – chromosomes line up at the center of the cell: In metaphase, chromosomes align at the metaphase plate.
C. telophase – nuclear envelope is breaking down; chromosomes are condensing: In telophase, the nuclear envelope is reforming, and chromosomes are de-condensing into chromatin. The description given fits prophase, not telophase.
D. interphase – cell is going about its daily business, at the end DNA is duplicated and starts condensing: During interphase, the cell grows and replicates DNA in preparation for mitosis.
Correct Answer is C
Explanation
A. isotope; 27: The atomic number (27) refers to the number of protons, not neutrons. Isotopes have the same protons, different neutrons.
B. isomer; 33: An isomer is a different structural arrangement of the same molecules-not applicable here.
C. isotope; 33: Cobalt 60 is an isotope of Cobalt 59 (same protons, different neutrons).
Neutrons = mass number – atomic number = 60 – 27 = 33
D. isotope; 32: 60 – 27 = 33, not 32 neutrons.
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