In mammalian cells, replication proceeds

A) unidirectionally
B) bidirectionally.
C) unidirectionally from many origins.
D) bidirectionally from a single origin.


B) bidirectionally.

Biology & Microbiology

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Place the steps of biofilm formation in the correct order. _____ Surface (substratum) is preconditioned by environmental molecules. _____ Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably. _____ Biofilm matures and some microorganisms escape to the planktonic state. _____ Microbes attach and detach from the preconditioned surface.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of these organisms most contributes to the global methane oxidation and greenhouse gas conversion?

A. Chlamydia trachomatis B. Bacteroides fragilis C. Treponema pallidum D. Acidimethylosilex fumarolicum

Biology & Microbiology

Elements such as iodine, chlorine, and bromine are examples of (oxidizers/halogens/metals), which are the basis for many effective antimicrobial agents

What will be an ideal response?

Biology & Microbiology

Which of the following are potential costs of sexual reproduction?

a. Proteins in the seminal fluid of Drosophila males shorten the life expectancy of inseminated females. b. Females of birds of paradise inspect several males before making a decision of who to mate with. c. Anther smut fungus is vectored by insect pollinators. d. Male and female damselflies form characteristic mating wheels, which allow the partners to fly, albeit at slower speeds than a single damselfly. e. All of the above.

Biology & Microbiology