Question

Exponential growth is shown by

• A. Unicellular forms
• B. A cell in tissue culture
• C. Embryo
• D. Multicellular plants

Answer 1

Answer: (B)

A cell in tissue culture

Cells in culture usually follow a standard growth pattern. The first phase of growth after the culture is seeded is the lag phase, which is a period of slow growth when the cells are adapting to the culture environment. The lag phase is followed by the log phase (logarithmic phase), a period where the cells divide exponentially and consume the nutrients in the growth medium. When all the growth medium is spent (one or more of the nutrients is depleted) or when the cells occupy all of the available substrates, the cells enter the stationary phase.

Therefore, the correct answer is option B.