The pH of the adult vagina is acidic due to the conversion of ________ to ________ by bacteria
A) glucose; ethanol
B) protein; acetic acid
C) glycogen; lactic acid
D) mucosal cells; lactic acid
E) urine; lactic acid
C
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Active transport in plant root cells requires that those cells have access to O2. Normally there is enough O2 available
in air pockets in the soil, but flooded soil has very little O2. Thus, unless they have special adaptations, plants in flooded soil effectively have no active transport in their roots. Which of the following should you expect to occur for trees without special adaptations to flooding after several days in flooded soil?
a. excess uptake of water and minerals in the xylem only b. wilting of their leaves c. bursting of leaf cells due to excess water flow d. excess water pushed out at the margins of their leaves only e. excess uptake of water and minerals in the xylem, and excess water pushed out at the margins of their leaves
Oxygen is toxic to
A) obligate anaerobes. B) obligate aerobes. C) cancer cells. D) facultative organisms. E) All of the above.
Certain cell types in humans, such as skeletal muscle cells, have several nuclei per cell. Based on what we know about mitosis, how could this happen?
a. The cell undergoes repeated mitosis with associated cytokinesis. b. The cell undergoes repeated cytokinesis, but not mitosis. c. The cell undergoes anaphase twice before entering telophase. d. The cell undergoes repeated mitosis, but not cytokinesis.
When bacteria infect the bladder, the condition is known as (cystitis/pyelonephritis/urethritis)
What will be an ideal response?