Which of the following genera of the Archaea do not have cell walls?

A. Thermoplasma
B. Thermococcus
C. Halobacterium
D. None of the choices are correct.


Answer: A

Biology & Microbiology

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A red blood cell placed in a hypertonic medium will

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Two solutions A and B are separated by a membrane, which is permeable to water but not salts. Solution A is a 2%

NaCl solution, while solution B is a 3% NaCl solution. Which of the following will occur? a. Water will move from side B to side A. b. Water will move from side A to side B. c. Salt will move from side B to side A. d. Salt will move from side A to side B. e. Neither salt or water will move across the membrane.

Biology & Microbiology

Based on the animation, how many electron carriers are reduced in the Krebs cycle only?

a. Six b. Four c. Five d. Three

Biology & Microbiology

Why is it challenging for clinicians to narrow down the autoimmune disorder at play and how is it diagnosed in the end?

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