Which factor has so far kept gene therapy from becoming an effective treatment for genetic disorders?
A.) the difficulty of getting new genes to become part of a cell's DNA
B.) the complexity of sequencing the entire human genome
c.) the lack of success in finding genes that are responsible for genetic disorders
D.) the ethical questions about making transgenic humans
Ans: A.) the difficulty of getting new genes to become part of a cell's DNA
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Noncompetitive inhibitors of a reaction will bind _______
A. to the substrate B. to the active site of the enzyme C. somewhere on the enzyme that is not at the active site D. somewhere on the substrate other than at the active site E. to vitamins that accelerate the reaction
Despite the aggressive defense of the cardiovascular system by the immune system, some microbes can invade and establish an infection in the blood. From the following list of microbes and their virulence factors, identify the mismatch.
A. Borrelia burgdorferi changes its surface antigens to avoid immune recognition. B. Coxiella burnetii produces an endospore-like structure. C. Trypanosoma cruzi cloaks itself in host proteins to avoid immune recognition. D. Bacillus anthracis produces antioxidants to combat lysosomes.
The meshwork that forms the fabric of a blood clot mostly consists of
A. fibrinogen. B. fibrin. C. thrombin. D. prothrombin. E. collagen.
Recognition or "self" proteins on the surface of your cells are called ____
a. T cell receptors (TCRs) b. cytokines c. major histocompatibility complex (MHC) markers d. complements e. PAMPs