32.
(A) Students
(B) Patients
(C) Clients
(D) Employees

28. (A) A scientific discovery (B) An event announcement (C) A weather forecast (D) A historical story

29. (A) A sports competition (B) A happy celebration (C) An amusement park ride (D) A useful invention

30. (A) Giving a presentation (B) Filing a complaint (C) Giving an instruction (D) Chatting with his friend

31. (A) A philosophical idea (B) An important announcement (C) A digital tool (D) A past event

33. (A) A doctor (B) A waiter (C) A chef (D) A cowboy

34. (A) Mandy Lee (B) Anna Peterson (C) Sarah Wang (D) Violet Cane

35.(A) $28000 (B) $35000 (C) $42000 (D) $50000

1. Which of the following statements about regulation of the lac operon is true? (A) Glucose in the growth medium does not affect the inducibility by lactose. (B) Glucose in the growth medium decreases the inducibility by lactose. (C) Glucose in the growth medium increases the inducibility by lactose. (D) Its expression is regulated mainly at the level of translation. (E) The lac operon is fully induced whenever lactose is present.

2. Which one of the following is not involved in steroid hormone action? (A) Transcription activation and repression (B) Hormone-receptor complexes (C) Specific DNA sequences (D) Cell surface receptors (E) Zinc fingers

3. The PCR reaction mixture does not include: (A) DNA containing the sequence to be amplified. (B) all four deoxynucleoside triphosphates. (C) heat-stable DNA polymerase. (D) oligonucleotide primer(s). (E) DNA ligase.