Test 2 - Quiz #7

Question 1

The nuclear envelope is continuous with the \_\_\_\_\_\_.
     A. Mitochondrial outer membrane
     B. Rough endoplasmic reticulumm
     C. Golgi apparatus
     D. Plasma membrane

Answer 1

B. Rough endoplasmic reticulumm

Question 2

The nuclear lamina bonds to _______.
A. Both the inner nuclear envelope membrane and the chromatin.
B. The inner nuclear envelope membrane only.
C. The chromatin only.
D. Both the inner and outer nuclear envelope membranes.

Answer 2

A. Both the inner nuclear envelope membrane and the chromatin.

Question 3

Nuclear pores are organized with \_\_\_\_\_\_ symmetry.
     A. Sixfold
     B. Eightfold
     C. Ninefold
     D. Tenfold

Answer 3

B. Eightfold

Question 4

The nuclear localization signal is typically a(n) \_\_\_\_\_, rich in the amino acids \_\_\_\_\_\_\_.
     A. Alpha helix; Pro, Lys and Arg
     B. Alpha helix; Leu, Phe and Gly
     C. Short sequence; Lys and Arg
     D. Short sequence; Pro, Leu and Gly

Answer 4

C. Short sequence; Lys and Arg

Question 5

Which of the following about snRNAs is true?
A. They are synthesized in the nucleus and function in the cytoplasm.
B. They are synthesized in the cytoplasm and function in the nucleus.
C. They are synthesized in the nucleus ad function in the nucleus without passing into the cytoplasm.
D. They are synthesized in the nucleus, move to the cytoplasm to pick up proteins to become functional, and then return to the nucleus.

Answer 5

D. They are synthesized in the nucleus, move to the cytoplasm to pick up proteins to become functional, and then return to the nucleus.

Question 6

Cajal bodies are thought to represent sites of ______.
A. DNA replication
B. snRNA processing and assembly
C. Large ribosomal subunit assembly
D. Small ribosomal subunit assembly

Answer 6

B. snRNA processing and assembly