CO2 fixation: the Calvin Cycle
What will be an ideal response?
1.Bacteria and chloroplasts
2.Not in archaea/cytoplasm of eukaryotes
3.Evolved after divergence of 3 domains of life
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Psychrotolerant microorganisms can survive and grow at
A) refrigeration temperatures. B) boiling temperatures. C) extreme fluctuations in water availability. D) high salt or sugar concentrations.
Patients who have type 2 diabetes no longer respond normally to insulin. Which statement best explains this symptom?
A. Their cells express less insulin receptor. B. The nucleus of their cells are altered so that insulin can not bind. C. The insulin receptors on their cells have mutated. D. Type 2 diabetics do not produce insulin. E. The signal transduction pathways in the cells no longer exist.
What is the sex chromosome composition of a person with Turner syndrome?
a. XXX b. XO c. XXY d. XYY e. YY
Which of the following is incorrect concerning
Radiolarians? a. They have perforated shells of calcium carbonate. b. They form part of the plankton. c. They use pseudopods for feeding. d. They have vacuoles that impart buoyancy. e. They are heterotrophic protists