In simulations of tidal flat conditions, amino acids form short chains by binding to
a. clay particles.
b. water molecules.
c. rock chambers.
d. iron sulfide.
e. hyrdothermal vents.
a
Biology & Microbiology
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How many oxidation reactions occur during the Krebs cycle?
A. 1 B. 2 C. 4 D. 6 E. 9
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Which is NOT a component of blood?
a. erythrocytes b. osteocytes c. leukocytes d. platelets e. plasma
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Which of the following is NOT a distinguishing characteristic of prokaryotic cells?
A) Their DNA is not enclosed within a membrane. B) They lack membrane-enclosed organelles. C) They have cell walls containing peptidoglycan. D) Their DNA is not associated with histones. E) They lack a plasma membrane.
Biology & Microbiology
The first dinosaurs appeared during the ________ period
Fill in the blank(s) with correct word
Biology & Microbiology