What is the name of a photograph of a specimen obtained with a microscope?
A. dermatome
B. negative
C. chromatograph
D. micrograph
E. thermograph
Answer: D
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All other factors being equal, the renaturation of the three classes of complementary nucleic acid sequences occurs in what order, from fastest to slowest?
What will be an ideal response?
When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e.g
, glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. Which of the following solutions would be expected to contain the greatest number of solute particles (molecules or ions)? A) 1 liter of 0.5 M NaCl B) 1 liter of 1.0 M NaCl C) 1 liter of 1.0 M glucose D) 1 liter of 1.0 M NaCl and 1 liter of 1.0 M glucose will contain equal numbers of solute particles.
Scientists have found that extracellular matrix components may induce specific gene expression in embryonic tissues such as the liver and testes
For this to happen there must be direct communication between the extracellular matrix and the developing cells. Which kind of transmembrane protein would most likely be involved in this kind of induction? A) integrins B) collagens C) actins D) fibronectins
The male gametes, pollen grains of the flower, are formed in the
a. gynoecium b. anters c. perianth d. stigma e. style