You discover a new life-form, and study it under an electron microscope. You find that its cells have no organelles, a peptidoglycan cell wall, and fatty acids in its plasma membrane. You conclude that the new life-form is in which domain?

A. Bacteria
B. Archaea
C. Eukarya
D. Protista
E. Animalia


A. Bacteria

Biology & Microbiology

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The text states that antibiotics are derived from microorganisms. What is the benefit to an antibiotic-producing microorganism of producing an antibiotic in its natural habitat?

What will be an ideal response?

Biology & Microbiology

All of the following are characteristics of ALL

living organisms with one exception. Select the exception.

a. complex structural organization b. homeostasis c. cells as their basic units d. the ability to derive energy from inorganic sources e. capacity to evolve

Biology & Microbiology

Peptide bonds

A. are used to form amino acids B. form between fatty acids C. are formed by a hydrolysis reaction D. link amino acids

Biology & Microbiology

Which cells secrete epinephrine?

a) ? -cells in the pancreas b) medulla cells in the adrenal gland c) ? -cells in the pancreas d) cortical cells in the adrenal gland e) ? -cells in the pancreas

Biology & Microbiology