If the decolorizer is left on too long in the Gram-staining procedure, gram-positive organisms will be stained ________ and gram-negative organisms will be stained ________.
A. purple; colorless
B. purple; blue
C. purple; pink
D. pink; pink
Answer: D
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Answer the following statements true (T) or false (F)
1. When Schmidt-Nielsen and his colleagues followed a "pulse" of air through the respiratory system of an ostrich, it took two full cycles of inhalation and exhalation for this pulse to pass through and be exhaled. 2. Chemoreceptors for oxygen normally play the most important role in regulating breathing rate. 3. Smaller mammals typically have higher ventilation rates than large mammals. 4. The shape of the oxygen-hemoglobin dissociation curve is a straight line. 5. Asthma attacks result from contraction of the muscles surrounding the bronchioles.
Of the following. the two that are most likely examples of endogenous infections are _____ and ______
a. and HIV infection from unprotected sex b. a measles infection from contact with a contagious individual c. a Staphyococcus infection from consuming contaminated food d. a Micrococcus infection resulting from a cut to the skin e. a Staphylococcus infection of a hair follicle
Glycolysis occurs in the ________ of a cell, not in mitochondria
Fill in the blank(s) with correct word
________ consist of a core of segments of DNA or RNA surrounded by a protein coat.
A. Viruses B. Protists C. Archaea D. Bacteria