Members of the genus Lactobacillus
A. are strict aerobes.
B. grow optimally under slightly alkaline conditions.
C. produce large amounts of H2 as a byproduct of metabolism when growing on glucose.
D. are normal flora of the human body in mouth, intestinal tract, and vagina.
Answer: D
You might also like to view...
Linda is studying the interaction between porcupines, pinion pine trees, and pine bark beetles
Over the course of her study in northern Texas, she observes the behaviors of 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles. Her study encompasses _____ organisms and _____ population(s).
a. 508; 1 b. 3; 3 c. 508; 508 d. 508; 3 e. 3; 508
Which of the following is not true about cervical cancer, which is a relatively common cancer?
a. It can be detected early by a PAP test. b. It is usually caused by human papillomavirus (HPV). c. It causes the cervical cells to make peptide E7, which disrupts the cell cycle. d. It spreads by blocking the retinoblastoma protein RB. e. It usually remains localized.
The spindle assembly checkpoint monitors the alignment of chromosomes in the mitotic spindle during mitosis to insure an even distribution of chromosomes to each of the daughter cells. If the chromosomes do not align properly, the spindle assembly checkpoint will arrest cells in what phase of mitosis?
a. Prophase b. Metaphase c. Anaphase d. Telophase
Conjugation, transformation, and transduction are all ways that bacteria
A) reduce their DNA content. B) increase the amount of RNA in the cytoplasm. C) increase their genetic diversity. D) alter their oxygen requirements.