Ques:Prokaryotes are single-celled organisms that lack a nucleus, and bacteria are said to be prokaryotes . Given these facts, what are single-celled organisms that lack a nucleus among the following options: - ferns - barnacles - Most plants - cacti - Leeuwenhoek - orchids - bacteria - PDAs

Ans:bacteria
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Ques:Macroevolution is evolution over geologic time above the level of the species, and speciation events are thus examples of macroevolution. Given these facts, evolution over what time above the level of the species includes speciation events among the following options: - movement - ligt - environment - radiation - geologic - relocation - Most plants - animals

Ans:geologic
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Ques:Aging is associated with the death of cells, and apoptosis means cell death. Given these facts, what is a natural part of aging among the following options: - Smoking - apoptosis - regeneration - illness - stimulation - cracking - Weight - firm skin

Ans:apoptosis
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Ques:Operating an automobile usually requires fossil fuels, and fossil fuel pollution can cause asthma and lung problems, especially for children and the elderly. Given these facts, a possible downside of driving a car is among the following options: - slow and inefficient - more asthma in children - split ends - greying hair - Plant growth is reduced - decreases its bodily water - balding - Greenhouse gasses

Ans:
more asthma in children
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