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
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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?
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
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
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