Bacterial ________ are sites of metabolite storage.
A. nucleoids
B. vacuoles
C. inclusions
D. pili
E. periplasm
Answer: C
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The half-life of Carbon-14 is approximately 5,700 years. Using this information scientists have been able to determine the age of some artifacts left by humans. A scientist wants to know approximately how old a piece of wood was that she found on the floor in an old cave that had recently been discovered. She removed the wood (with permission) to her laboratory. Her wood sample contained 2 grams
of Carbon- 14. If the age of the wood was determined to be 22,800 years old, how much Carbon-14 originally existed in this piece of wood? A. 32 grams B. 16 grams C. 12 grams D. 8 grams E. 4 grams
Eric was working very hard in the dry, hot boiler room and sweating a lot. Under these conditions, which of the following might Eric be experiencing?
A) He has decreased hydrocortisone. B) He has increased oxytocin. C) He has increased antidiuretic hormone. D) He has decreased thyroxine.
Which of the following endocrine glands are incorrectly paired with its target?
a. pancreas?liver b. hypothalamus?pituitary c. pineal gland?hypothalamus d. adrenal medulla?kidney tubules e. thyroid gland?bone
The term "respiration" in animals refers to the ____.
A. movement of oxygen into an animal only B. movement of carbon dioxide out of an animal only C. movement of oxygen into an animal and the movement of carbon dioxide out of the animal D. binding of oxygen to hemoglobin molecules in the blood E. diffusion of oxygen across a cell membrane