Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level?
a) organ system, organ, tissue, cell
b) tissue, organ, organ system, cell
c) Cell, tissue, organ system, organ
d) cell, tissue, organ, organ system
Answer: d) cell, tissue, organ, organ system
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In the Hershey and Chase experiment, phage-infected bacteria and viral progeny were radioactive following bacterial
infection with 32P-labeled viruses. Why?
a. Bacteria had incorporated radioactive proteins into their DNA. b. Bacteria and viral progeny had incorporated 32P into their DNA. c. Viral progeny had used the 32P to build new viral proteins. d. Bacteria had incorporated radioactive proteins into their cell membranes. e. 32P was left outside the cell during viral infection.
The embryonic skeleton of all vertebrates is made of:
a. yellow bone marrow b. elastic tissue c. loose connective tissue d. cartilage e. muscle tissue
Which of the following is not a pinniped:
1.seal 2.sea lion 3.walrus 4.sea otter
You wish to investigate proteins from human cells that bind to a specific short sequence of nucleotide bases. Which of the following techniques would allow you to separate proteins from whole cells or complex
mixtures based on their ability to bind to a short nucleotide sequence? A) affinity chromatography B) Western blot analysis C) Southern blot analysis D) immunoprecipitation E) tandem mass spectrometry