What are the name of bacteria that are round with a thick wall?
A. Gram - bacilli
B. Gram - cocci
C. Gram + bacilli
D. Gram + cocci
Answer: D. Gram + cocci
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At the venous end of a capillary, the blood pressure is ____ the osmotic pressure and fluid ____ the blood vessel
A. lower than; moves into B. higher than; moves into C. lower than; moves out of D. higher than; moves out of E. equal to; remains within
Steroid hormone-nuclear receptor complexes activate transcription by binding to:
A. the plasma membrane. B. hormone response elements. C. RNA Pol II. D. repressor proteins.
Citrate synthase, the first enzyme in the citric acid cycle, is regulated by ATP concentrations. Why is early regulation
of ATP production the most beneficial method for the cell?
a. It is not possible to regulate the last enzyme in a pathway. b. More ATP can be produced before the first enzyme is inactivated. c. ATP production always needs to be maximized. d. Citrate synthase controls the amount of pyruvate produced by glycolysis. e. Regulating early steps conserves cellular fuels.
Oxygen-16 is abundant and has 8 protons and 8 neutrons. Oxygen-18 has two extra neutrons. These two forms are:
A. oxygen ions. B. oxygen dimers. C. oxygen isomers. D. oxygen isotopes.