Which genus is resident biota of the mouth, large intestine, and within the vagina from puberty to menopause?

A. Treponema
B. Lactobacillus
C. Haemophilus
D. Clostridium
E. Escherichia


Answer: B

Biology & Microbiology

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The lipid layer that forms the foundation of cell membranes is primarily composed of molecules called __________

A. phospholipids B. fats C. proteins D. carbohydrates

Biology & Microbiology

Which of the following is not part of standard precautions?

A) handwashing between patient contacts B) placing a patient in a private room having negative air pressure C) properly disposing of needles, scalpels, and other sharps D) wearing gloves, masks, eye protection, and gowns when appropriate to do so

Biology & Microbiology

Movement of substances that requires the

expenditure of ATP molecules is

a. facilitated diffusion. b. simple diffusion. c. active transport. d. osmosis. e. bulk flow.

Biology & Microbiology

Where in a plant cell is chlorophyll found?

a. on the outer chloroplast membrane b. inside the mitochondria c. in the stroma d. in the thylakoid membrane e. in the plant cell wall

Biology & Microbiology