Which of the following diseases are caused by an expansion of trinucleotide repeats?
A) cystic fibrosis
B) beta-thalassemia
C) achondroplasia
D) fragile X syndrome
E) Marfan's syndrome
Answer: D
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Answer the following statements true (T) or false (F)
1. Gamma aminobutyric acid (GABA) is the most common inhibitory neurotransmitter in vertebrates. 2. Ionotropic receptors act by activating G proteins in target cells. 3. Metabotropic receptors act by initiating changes in second messenger systems in target cells. 4. Meningitis is solely a bacterially caused disease. 5. Synaptic vesicles discharge their contents at the axon hillock region.
The final product of glycolysis is ____
a. glucose b. fructose c. glyceraldehyde-3-phosphate d. pyruvate e. carbon dioxide
Innate effector phagocytes are coated with opsonin receptors and receptors to pathogen-associated molecular patterns (PAMPs). These PAMP receptors are collectively called:
a. PRRs b. complement receptors c. TLRs d. LPS receptors
Collagen
A. forms junctions between cells. B. is part of a cell wall. C. must be secreted from a cell. D. functions inside a cell. E. acts as an enzyme.