BIOL 242 Final Exam- All Past Multiple Choice Questions

BIOL 242 Final Exam- All Past Multiple Choice Questions

T/F: Evolutionary trends can reverse or cease when

environments change. - Correct Answers ✅True

T/F: If the results of an experiment support your hypothesis,

then it has been proven true. - Correct Answers ✅False

T/F: Adaptive radiation only occurs after mass extinctions. -

Correct Answers ✅False Order the 7 major life history events in chronological order.

• Colonization of land
• Evolution of multicellularity
• Homo Sapiens speciate from an ancestor of all primates
• The first plants and animals evolve
• Photosynthesis emerges and oxygenates the atmosphere
• First cells
• First eukaryotes evolve from an Archean lineage - Correct

Answers ✅1. First cells

• Photosynthesis emerges and oxygenates the atmosphere
• First eukaryotes evolve from an Archean lineage
• Evolution of multicellularity
• The first plants and animals evolve
• Colonization of land
• Homo Sapiens speciate from an ancestor of all primates 1 / 2

BIOL 242 Final Exam- All Past Multiple Choice Questions Within six months of effectively using methicillin to treat S.aureus infections in a community, all new infections were caused by MRSA. How can this result best be explained? - Correct Answers ✅Some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency.

The principle of competitive exclusion states that: - Correct

Answers ✅Two species that have exactly the same niche cannot coexist in a community.Root nodules are formed from colonies of bacteria in the roots of legumes. The plant provides these bacteria with a habitat and food for the bacteria. The bacteria convert nitrogen in the air into nitrogen compounds that the plant can readily use to support growth. What type of interaction is being described? - Correct Answers ✅Mutualism

T/F: Mutations could have no advantage in a particular

environment - Correct Answers ✅True

T/F: Genes from one organism can be inserted into another

organism and then expressed to produce the associated phenotype. - Correct Answers ✅True

T/F: Transcription is more complex in eukaryotes than

bacteria. - Correct Answers ✅True

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