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Biotechnology - 29
Retroviruses consist of A. Ds DNA genome B. Ss DNA genome C. RNA genome D. cDNA genome..... Which of the following promoters is repressed in presence of glucose? A. Galactokinase (GAL 1) B. Acid phosphatase (PHOS) C. Both (a) and (b) D. Phosphoglycerate kinase (PGK)..... Which of the following can be used for reducing the size of gene inserts containing introns? A. Vaccinia virus B. Baculo virus C. Retro virus D. none of these....
Thời gian bắt đầu: Hôm nay lúc 05:27:59(Server time)
Số câu hỏi: 10.   Tổng điểm: 10
Thời gian làm bài: 20 phút.  Thời gian còn lại: 
Cỡ chữ câu hỏi:  Cỡ chữ đáp án:
1-
Retroviruses consist of
A-
Ds DNA genome
B-
Ss DNA genome
C-
RNA genome
D-
cDNA genome
2-
The approach (s), which is/are currently followed to produce human monoclonal antibodies, is/are known as
A-
transformation of antigen specific B lymphocytes (EBV)
B-
hybridization of 6-thioguanine-resistant human plasmacytoma with immune human lymphocytes
C-
combination of EB Vand hybridoma techniques
D-
All of these
3-
Some cross reactions with monoclonal antibodies (MAbs) can occur. Unexpected cross reactions occur more frequently with
A-
Ig MAbs
B-
IgG
C-
IgA
D-
IgE
4-
Preliminary clinical results with a humanized antibody against the interleukin-2 receptor have suggested the
A-
absence of human immune response against murine proteins (HAMA) response
B-
presence of HAMA response
C-
poor recognition of immunoglobulin, Ig constant regions
D-
All of the above
5-
The cross linkage of antigens by antibodies is known as
A-
agglutination
B-
complement fixation
C-
a cross reaction
D-
All of these
6-
In monoclonal antibody technology, tumor cells that can replicate endlessly are fused with mammalian cells that produce an antibody. The result of this cell fusion is a
A-
hybridoma
B-
myeloma
C-
natural killer cell
D-
lymphoblast
7-
In human B cells and T cells are matured in the
A-
lymph nodes and spleen respectively
B-
bone marrow and thymus respectively
C-
bursa and thymus respectively
D-
None of these
8-
An example of mosaic antigen is
A-
a hapten
B-
bacteria
C-
virus
D-
protein
9-
T cells are the source of
A-
interleukin
B-
interferon
C-
lymphotoxin
D-
All of these
10-
The primary B cell receptor is
A-
IgD
B-
IgG
C-
IgA
D-
IgE
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