Question 181
Which hormone regulates the menstrual cycle by promoting the thickening of the uterine lining?ReproductionHuman reproduction and hormonesmedium
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NSC Life Sciences – South Africa
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Question 182
Which of the following is an example of convergent evolution?EvolutionEvolution mechanismshard
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Question 183
Which blood vessel type has the thickest muscular walls to withstand high pressure?Human physiologyCirculatory system structurehard
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Question 184
Which of the following best describes a keystone species in an ecosystem?EcologyEcosystem dynamicshard
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Question 185
What is the complementary DNA base to adenine (A)?DNA and geneticsDNA Structure and Functioneasy
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Question 186
Which human body system is primarily responsible for transporting oxygen to body cells?Human physiologyBody Systems and Functionseasy
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Question 187
In an ecosystem, which of the following is a biotic factor?EcologyEcosystem Componentseasy
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Question 188
Which gas is most responsible for global warming due to human activities?Environmental studiesHuman Impact on Environmentmedium
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Question 189
Which of the following best describes genetic drift?EvolutionEvolutionary Mechanismsmedium
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Question 190
Which ecological relationship benefits both species involved?EcologyInteractions in Ecosystemseasy
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