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

Biology & Microbiology

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Somatic cells are ________

A) haploid (n) B) haploid (2n) C) diploid (n) D) diploid (2n)

Biology & Microbiology

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.

Biology & Microbiology

Which 18th century naturalist developed the 2 part naming system?

a. Watson b. Linnaeus c. Crick d. Mendel e. Darwin

Biology & Microbiology

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

Biology & Microbiology