#Question id: 5256
#Unit 8. Inheritance Biology
If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?
#Question id: 11458
#Unit 7. System Physiology – Animal
A person able to hear only low-frequency sounds would probably have which of the following structural problems in the ear?
#Question id: 7295
#Unit 5. Developmental Biology
If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering? (SS)
#Question id: 714
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the length of a polypeptide with 100 amino acids residue in a single contiguous alpha helix?
#Question id: 11481
#Unit 7. System Physiology – Animal
Which of the following sensory receptors is correctly paired with its category?