Download Exam 2 Practice

1a. What kind of genes encode for proteins that regulate the activity of structural genes?
a. mobile genes
b. operons
c. regulatory genes
1b. Regulatory genes
a. are the on/off switch for transcription of structural genes
b. made cells more efficient
c. have been used for genetic engineering
2a. What type of operon allows transcription?
a. repressible
b. inducible
c. transposons
d. polymerase
2b. What do repressible operons do?
a. blocks active transport
b. allows transport
c. blocks transcription
d. allows active transport
3a. Repetitive sequences are
a. sequences of RNA repeated
b. repeated amino acids such as CCC CCC CCC
c. sequences of repated DNA
d. all of the above
3b. Non-coding sequences of DNA can be defined as
a. exons
b. operons
c. introns
d. both a and b
4a. Growth factors influence which of the following?
a. cell division
b. cyclin
c. cell cycle control system
d. checkpoints
4b. Cancer has what effect on normal cell growth control?
a. divide excessively
b. make required growth factors for themselves
c. abnormal cell control cycle
d. all of the above
1a. c
1b. b
4b. d
2a. b
2b. c
3a. c
3b. c
4a. d