* a) The HLA proteins are found within the cytoplasm of the cells
* b) HLA class I antigens are expressed on all cells with nuclei
* c) HLA class II antigens presents the virus infected cells to cytotoxic T lymphocytes
* d) HLA genes are found on chromosome 6
* e) HLA tissue typing is carried out in all forms of transplantation to prevent rejection
Answer a. F b. T c .F d. T e. F
* a) There are 23 pairs of autosomal chromosome traits
* b) 23 chromosomes are found in germinal cells
* d) In female only one chromosome is activated
* c) The Barr body is due to inactivated X chromosome
* e) Klinefelter's syndrome result from an extra X chromosome in male
Answer a. F b. T c. T d. T e .F
* a) They are found in the ovum and not the spermatozoan
* b) They have their own genome
* c) They are expressed in muscle cells
* d) An affected male with mitochondrial disorder can pass it on to his daughter only
* e) They are responsible for coding enzymes used in oxidation
Answer a. T b. T c. T d. F e. T
* a) Monoamine oxidase: noradrenaline
* b) Cholinesterase: acetylcholine
* c) Catechol-o-methyl transferase: dopamine
* d) Dopa decarboxylase: adrenaline
* e) Glutamic acid decarboxylase: gamma-aminobutyric acid (GABA)
Answer a. F b. F c. F d. T e. T
* a) Ig A-proteases
* b) Beta lactamases
* c) gonococcal pili
* d) Streptococcal M protein
* e) The capsular polysaccharides in Haemophilus influenzae
Answer a. T b. F c. T d. T e.
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