During initiation of translation in both eukaryotes and prokaryotes the ________ binds before the ________
A) large ribosomal subunit; small ribosomal subunit
B) small ribosomal subunit; large ribosomal subunit
C) EF-Tu; tRNA
D) EF-G; EF-Tu
E) ribosomes; initiation factors
Answer: B
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Which of the following is false regarding smallbodied
invertebrates of aquatic or continually moist environments? a. They have the simplest forms of respiration. b. Gases diffuse across the body surface coverings. c. They do not have specialized oxygentransporting cells. d. They depend on integumentary exchange for respiration. e. None of these are false.
Which part of the cardiac conduction system fires off impulses at the fastest rate?
a. Purkinje fibers b. Bundle branches c. AV node d. SA node e. gap junctions
The observation that schizophrenia is associated with duplications of a certain copy number variant (CNV), while autism spectrum disorders are associated with deletions of the same CNV, suggests that _____.
a. CNV mutations are present in all psychiatric disorders b. both disorders have identical phenotypes c. both disorders have an environmental component d. both disorders share common developmental pathways e. neither disorder has a genetic component
The human genome comprises:
a. an X and a Y chromosome. b. a homologous pair of chromosomes. c. 46 chromosomes. d. 46 pairs of chromosomes. e. 23 chromosomes.