Under a system of positive control, transcription does not occur unless a regulator molecule directly stimulates RNA production
Indicate whether the statement is true or false
TRUE
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Which 18th century naturalist developed the 2 part naming system?
a. Watson b. Linnaeus c. Crick d. Mendel e. Darwin
Which scientist(s) is/are given credit for making the first recorded observations of microorganisms, such as bacteria and protists, with their microscope?
A. Robert Hooke B. Mathias Schleiden and Theodore Schwann C. Antony van Leeuwenhoek D. Louis Pasteur E. Rudolf Virchow
Somatic cells are ________
A) haploid (n) B) haploid (2n) C) diploid (n) D) diploid (2n)
Phospholipids assemble spontaneously into bilayers driven by the attraction of their "tail" portions to each other and of their "head" portions to each other. The "head" portions are:
A) hydrophobic. B) composed of carbon-hydrogen chains. C) hydrophilic. D) nonpolar. E) directed away from intra- and extracellular fluid.