A scientist isolates a single-celled organism from the bottom of a sulfur hot spring. When examined under the microscope, it is clear that the cell is very small and contains no nucleus. Based on this evidence alone, in what domain of life is this organism?

A. Archaea
B. It is impossible to determine anything based on this evidence alone
C. Eukarya
D. Bacteria
E. Either bacteria or archaea


Answer: E

Biology & Microbiology

You might also like to view...

Water potential, the inherent capacity of water molecules to move from one site to another when

conditions dictate, is typically represented by the Greek letter ____.

a. ? b. ? c. ? d. ? e. ?

Biology & Microbiology

Which of the following statements is TRUE

about NADPH? a. It is an enzyme. b. It is the oxidized form of NADP+. c. It is generated n the light-dependent reactions of photosynthesis. d. It accepts hydrogen and electrons from carbohydrates. e. It obtains energy from ATP.

Biology & Microbiology

____ are responsible for cell mediated immunity

a. Natural killer cells b. Monocytes c. T lymphocytes

d. B cells e. Macrophages

Biology & Microbiology

Animals that have a ventral nerve cord during embryonic development are classified as chordates

Indicate whether the statement is true or false

Biology & Microbiology