Which of these haploid strains produces ?-galactosidase constitutively but does not produce permease?
A) I – P+ O+ Z+ Y+
B) I+ P+ O+ Z – Y –
C) I – P+ O+ Z – Y+
D) I+ P+ O – Z+ Y+
E) I – P+ O+ Z+ Y –
E
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In prokaryotes, inducers are small molecules that:
A. bind to activators and promote transcription. B. bind to activators and inhibit transcription. C. bind to repressors and promote transcription. D. bind to repressors and inhibit transcription. E. None of these choices is correct.
A septic tank will function effectively without a leach field.
Answer the following statement true (T) or false (F)
A wormlike arthropod with a flattened body
and carnivorous eating habits would be identified as a a. crustacean. b. millipede. c. spider. d. trilobite. e. centipede
The label on the box of breakfast cereal lists one serving as containing "200 Calories" per serving. How many calories are actually in one serving?
A) 20 B) 2,000 C) 200,000 D) 2,000,000