He is incorrect because a catalyst is a substance that speeds up a chemical reaction so if there is no reaction to begin with a catalyst will not due anything.
The best and most correct answer among the choices provided by your question is the fourth choice or letter D.
The cell would lose structure and shape when the ribosomes of a cell were damaged and stopped functioning.
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False. Offspring could die off from many factors such as disease, lack of food, and predators.
D two cells with 12 chromosomes in zero homologus
B. Lysosomes. Please rat my response and have a nice day!