Question 281
Which enzyme is responsible for unzipping the DNA double helix during replication?DNA and geneticsDNA Replicationmedium
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NSC Life Sciences – South Africa
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Question 282
Which evolutionary concept explains the survival of organisms best adapted to their environment?EvolutionMechanisms of Evolutionmedium
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Question 283
In an ecological pyramid, which trophic level typically has the greatest biomass?EcologyEnergy Flow in Ecosystemshard
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Question 284
How do decomposers benefit an ecosystem?EcologyEcosystem Functionsmedium
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Question 285
During which phase of the menstrual cycle does the endometrium thicken to prepare for a possible pregnancy?ReproductionHuman Reproductive Systemhard
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Question 286
What is the role of DNA in genetic inheritance?DNA and geneticsGenetics and DNA Structure and Functioneasy
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Question 287
Natural selection is best described as:EvolutionEvolutionary Mechanismseasy
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Question 288
Which organ system is primarily responsible for removing metabolic waste from the human body?Human physiologyHuman Excretory Systemeasy
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Question 289
In an ecosystem, which of the following is a primary producer?EcologyEcosystem and Energy Floweasy
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Question 290
Which factor is an abiotic component of an ecosystem?EcologyEcosystem Components and Interactionsmedium
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