Urinalysis can be used to identify four of the following. Which one is the exception?
a. intoxication
b. prostate cancer
c. kidney disease
d. diabetes mellitus
e. previous heart attack
ANSWER: e
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All animals are multi-cellular,
a. heterotrophic, and aerobic. b. heterotrophic, and lack motility. c. autotrophic, and have embryos. d. autotrophic, and motile. e. heterotrophic, sexual, and non-embryonic
The principles of heredity were first established through breeding experiments carried out in ________ by Gregor Mendel
A) the late 1700s B) the 1950s C) the 1860s D) the early 1900s E) the mid-1600s
Your research project involves the characterization of a particular signal transduction pathway. Specifically, you have been studying a receptor tyrosine kinase and protein X, which initiates downstream events. You are certain that protein X is part of the signal transduction pathway, but have been unable to identify a direct protein-protein interaction between the receptor tyrosine kinase and the protein X. What should you do next in your attempt to identify a link between the receptor tyrosine kinase and protein X?
A. try to identify an adapter protein that can interact with both the receptor and protein X B. try to identify proteins that act downstream of protein X C. confirm the interaction between the receptor tyrosine kinase and its ligand D. try to identify a coactivator protein
Which is the best method to demonstrate the function of a putative enhancer?
a. Clone the putative enhancer into a reporter construct, introduce the construct into eukaryotic cells, and measure the expression of the reporter protein b. Clone a region of DNA with the putative enhancer into a reporter construct, introduce the construct into eukaryotic cells and measure the expression of the reporter protein c. Introduce 2 separate pieces of DNA into a eukaryotic cell; 1 is a fragment of DNA with putative enhancer and other is plasmid that contains reporter gene d. Crosslink genomic DNA and associated proteins, fragment the DNA, use an antibody to isolate DNA sequences bound to a particular transcription factor, and sequence the DNA e. Compare DNA sequences from 2 or more species and identify conserves regions located outside of coding regions