Lymphocytes ignore which of the following in most
instances?
a. cells coated with complement proteins
b. cells with antigens on their surface
c. “self” cells with MHC markers
d. cells with both antigen and self-MHC markers
e. cells with damaged or mutant self-MHC markers
Answer: c
You might also like to view...
In producing a recombinant plasmid to be used to clone a given donor insert, it is possible to cut both the donor and plasmid with the same restriction enzyme, resulting in complementary sticky ends
Assuming plenty of plasmid DNA is available, why is further selection necessary before the introduction of the plasmid into a cellular system? A) Contamination will have introduced other donor inserts. B) Some donor inserts will be single stranded and deteriorate. C) Some donor inserts will be sensitive to particular antibiotics. D) Some donor pieces will remain uninserted. E) Some donor strands will be inserted with an incorrect orientation.
Peroxisomes are examples of
A. lysosomes. B. nucleosomes. C. ribosomes. D. chromosomes. E. microbodies.
Which of the following animal groups is entirely aquatic?
A) Mollusca B) Crustacea C) Echinodermata D) Nematoda E) Platyhelminthes
Which pairing accurately describes a one specific type of muscle tissue?
a. smooth muscle tissue – voluntary contraction b. cardiac muscle tissue – involuntary contraction c. smooth muscle tissue – attached to skeleton d. skeletal muscle tissue – one nuclei per cell e. skeletal muscle tissue – slowest speed of contraction